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We encourage you to perform a real-time search of NLEBeta
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1

Mesoscale Waves as a Probe of Jupiter's Deep Atmosphere  

Science Journals Connector (OSTI)

Search of the Voyager images of Jupiter reveals a class of mesoscale waves occurring near the extrema of the zonal velocity profile between latitudes 30°S and 30°N. The average horizontal wavelength is 300 km, compared to an atmospheric scale ...

F. M. Flasar; P. J. Gierasch

1986-11-01T23:59:59.000Z

2

Modeling the Atmospheric Boundary Layer Wind Response to Mesoscale Sea Surface Temperature Perturbations  

Science Journals Connector (OSTI)

The wind speed response to mesoscale SST variability is investigated over the Agulhas Return Current region of the Southern Ocean using the Weather Research and Forecasting (WRF) Model and the U.S. Navy Coupled Ocean–Atmosphere Mesoscale ...

Natalie Perlin; Simon P. de Szoeke; Dudley B. Chelton; Roger M. Samelson; Eric D. Skyllingstad; Larry W. O’Neill

2014-11-01T23:59:59.000Z

3

Mesoscale Coupled Ocean-Atmosphere Interaction  

E-Print Network [OSTI]

heat flux, and wind power input to the ocean. Geophys. Res.Powers and Stoelinga (2000). They developed a comprehensive atmosphere-ocean-

Seo, Hyodae

2007-01-01T23:59:59.000Z

4

Mesoscale coupled ocean-atmosphere interaction  

E-Print Network [OSTI]

heat flux, and wind power input to the ocean. Geophys. Res.Powers and Stoelinga (2000). They developed a comprehensive atmosphere-ocean-

Seo, Hyodae

2007-01-01T23:59:59.000Z

5

Solar Radiation Estimated Through Mesoscale Atmospheric Modeling over Northeast Brazil  

Science Journals Connector (OSTI)

The use of renewable energy sources like solar wind and biomass is rapidly increasing in recent years with solar radiation as a particularly abundant energy source over Northeast Brazil. A proper quantitative knowledge of the incoming solar radiation is of great importance for energy planning in Brazil serving as basis for developing future projects of photovoltaic power plants and solar energy exploitation. This work presents a methodology for mapping the incoming solar radiation at ground level for Northeast Brazil using a mesoscale atmospheric model (Regional Atmospheric Modeling System—RAMS) calibrated and validated using data from the network of automatic surface stations from the State Foundation for Meteorology and Water Resources from Ceará (Fundação Cearense de Meteorologia e Recursos Hídricos? FUNCEME). The results showed that the model exhibits systematic errors overestimating surface radiation but that after the proper statistical corrections using a relationship between the model?predicted cloud fraction the ground?level observed solar radiation and the incoming solar radiation estimated at the top of the atmosphere a correlation of 0.92 with a confidence interval of 13.5? W / m 2 is found for monthly data. Using this methodology we found an estimate for annual average incoming solar radiation over Ceará of 215? W / m 2 (maximum in October: 260? W / m 2 ).

Otacilio Leandro de Menezes Neto; Alexandre Araújo Costa; Fernando Pinto Ramalho; Paulo Henrique Santiago de Maria

2009-01-01T23:59:59.000Z

6

Modeling the Atmospheric Boundary Layer Wind Response to Mesoscale Sea Surface Temperature  

E-Print Network [OSTI]

(WRF) and COAMPS atmospheric models. The SST-induced wind response is assessed from eight simulations of the surface wind relative to the SST gradient. #12;3 1. Introduction Positive correlations of local surfaceModeling the Atmospheric Boundary Layer Wind Response to Mesoscale Sea Surface Temperature Natalie

Kurapov, Alexander

7

Mesoscale Atmospheric Dispersion, 2001, Ed. Z. Boybeyi, WIT Publications, Southampton, UK, Advances in Air Pollution, Vol 9, p. 424.  

E-Print Network [OSTI]

surface­atmosphere exchanges in mesoscale air pollution systems Devdutta S. Niyogi & Sethu Raman NorthMesoscale Atmospheric Dispersion, 2001, Ed. Z. Boybeyi, WIT Publications, Southampton, UK, Advances in Air Pollution, Vol 9, p. 424. Chapter 9 Numerical modeling of gas deposition and bi- directional

Raman, Sethu

8

ADVANCES IN ATMOSPHERIC SCIENCES, VOL. 27, NO. 2, 2010, 243252 Mesoscale Barotropic Instability of Vortex Rossby  

E-Print Network [OSTI]

ADVANCES IN ATMOSPHERIC SCIENCES, VOL. 27, NO. 2, 2010, 243­252 Mesoscale Barotropic Instability of Vortex Rossby Waves in Tropical Cyclones ZHONG Wei1 ( Í), LU Han-Cheng1 (ö ), and Da-Lin ZHANG2 1 Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101 2 Department

Zhang, Da-Lin

9

The Advection of Mesoscale Atmospheric Vortices over Reykjavík  

Science Journals Connector (OSTI)

On 12 August 2009, a series of satellite images revealed asymmetric shedding of atmospheric vortices in the lee of Mt. Snæfellsjökull, and their passage a distance of 120 km across Faxaflói Bay and over the city of Reykjavík in West Iceland. After ...

Hálfdán Ágústsson; Haraldur Ólafsson

2014-10-01T23:59:59.000Z

10

A Blended Soundproof-to-Compressible Numerical Model for Small- to Mesoscale Atmospheric Dynamics  

Science Journals Connector (OSTI)

A blended model for atmospheric flow simulations is introduced that enables seamless transition from fully compressible to pseudo-incompressible dynamics. The model equations are written in nonperturbation form and integrated using a well-balanced ...

Tommaso Benacchio; Warren P. O’Neill; Rupert Klein

2014-12-01T23:59:59.000Z

11

Karlsruhe Institute for Industrial Production | Open Energy Information  

Open Energy Info (EERE)

Karlsruhe Institute for Industrial Production Karlsruhe Institute for Industrial Production Jump to: navigation, search Name Karlsruhe Institute for Industrial Production Place Karlsruhe, Germany Zip 76187 Product String representation "Karlsruhe-based ... tment concepts." is too long. References Karlsruhe Institute for Industrial Production[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Karlsruhe Institute for Industrial Production is a company located in Karlsruhe, Germany . References ↑ "Karlsruhe Institute for Industrial Production" Retrieved from "http://en.openei.org/w/index.php?title=Karlsruhe_Institute_for_Industrial_Production&oldid=347948" Categories: Clean Energy Organizations

12

Momentum transport processes in the stratiform regions of mesoscale convective systems over the western Pacific warm pool  

E-Print Network [OSTI]

Momentum transport by the stratiform components of mesoscale convective systems (MCSs) during the Tropical Ocean–Global Atmosphere Coupled Ocean–Atmosphere Response Experiment in December 1992 is investigated using a ...

Mechem, David B.; Chen, Shuyi S.; Houze, Robert A. Jr.

2006-04-01T23:59:59.000Z

13

Mesoscale hybrid calibration artifact  

DOE Patents [OSTI]

A mesoscale calibration artifact, also called a hybrid artifact, suitable for hybrid dimensional measurement and the method for make the artifact. The hybrid artifact has structural characteristics that make it suitable for dimensional measurement in both vision-based systems and touch-probe-based systems. The hybrid artifact employs the intersection of bulk-micromachined planes to fabricate edges that are sharp to the nanometer level and intersecting planes with crystal-lattice-defined angles.

Tran, Hy D. (Albuquerque, NM); Claudet, Andre A. (Albuquerque, NM); Oliver, Andrew D. (Waltham, MA)

2010-09-07T23:59:59.000Z

14

Mesoscale Structure of Trade Wind Convection over Puerto Rico: Composite Observations and Numerical Simulation  

Science Journals Connector (OSTI)

We examine the mesoscale structure of the atmospheric boundary layer (ABL), low-level circulation, and trade wind convection over the sub-tropical island of Puerto Rico in mid-summer. Shallow afternoon thunder...

Mark R. Jury; Sen Chiao; Eric W. Harmsen

2009-08-01T23:59:59.000Z

15

The effect of shear on heat budgets in a simulated Mesoscale Convective System  

E-Print Network [OSTI]

The evolution and structure of simulated Mesoscale Convective Systems (MCS) were examined using the Collaborative Model for Multiscale Atmospheric Simulations. Three numerical simulations were performed, with the amount of vertical wind shear...

Shaw, Justin David

2000-01-01T23:59:59.000Z

16

Processing of cloud condensation nuclei by collision-coalescence in a mesoscale model  

E-Print Network [OSTI]

The Naval Research Laboratory's Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPS) is employed to explore the relative importance of source, sink, and transport processes in producing an accurate forecast of the ...

Mechem, David B.; Robinson, Paul C.; Kogan, Yefim L.

2006-09-26T23:59:59.000Z

17

ICT Conference on Energetic Materials June 24-27, 2008 Karlsruhe, Germany  

E-Print Network [OSTI]

39th ICT Conference on Energetic Materials June 24-27, 2008 Karlsruhe, Germany 1 Detonation of Meta on Energetic Materials June 24-27, 2008 Karlsruhe, Germany 2 The smallest meta-stable carbon cluster found-27, 2008 Karlsruhe, Germany 3 accumulated energy is released upon fission of the boat ensemble

Geddes, Cameron Guy Robinson

18

E-Print Network 3.0 - atmospheric sciences program Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: of the atmospheric sciences (relate to program outcome a, b, c, and d) Meteo 361 Fundamentals of Mesoscale Weather... atmospheric science manuscripts (relate to program...

19

A Climatological Study of Boundary Layer Wind Speed Using a Meso-?-Scale Higher-Order Closure Model  

Science Journals Connector (OSTI)

A mesoscale higher-order closure atmospheric boundary layer model has been used to get more detailed information than is possible from observations regarding horizontal and vertical variations of the wind in an area in southeastern Sweden. To ...

Hans Bergström

1996-08-01T23:59:59.000Z

20

Poster Sessions J. Dudhia Mesoscale and Microscale Meteorology Division  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

J. Dudhia J. Dudhia Mesoscale and Microscale Meteorology Division National Center for Atmospheric Research Boulder, CO 80307-3000 Introduction The concept of an Integrated Data Assimilation and Sounding System (IDASS) ensures that the needs of data collection are partly determined by the requirements of an assimilating mesoscale model. Hence, the sounding strategy is geared towards allowing the model to do the best possible job in representing the atmosphere over CART sites, for example. It is not clear a priori what density of coverage or types of data are required for a good simulation. In this work, we address the problem of determining the impact of varying the density of coverage of an idea! network by purely numerical experimentation. We use one model run to provide data and another independent run to assimilate it.

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

E-Print Network 3.0 - anka karlsruhe minimum Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

tronstrahlung mbH), Berlin; ANKA (Angstrmquelle Karl- sruhe GmbH), Karlsruhe, Germany; the Swiss Source: Martin, Michael C. - Advanced Light Source, Lawrence Berkeley...

22

Meso-scale machining capabilities and issues  

SciTech Connect (OSTI)

Meso-scale manufacturing processes are bridging the gap between silicon-based MEMS processes and conventional miniature machining. These processes can fabricate two and three-dimensional parts having micron size features in traditional materials such as stainless steels, rare earth magnets, ceramics, and glass. Meso-scale processes that are currently available include, focused ion beam sputtering, micro-milling, micro-turning, excimer laser ablation, femto-second laser ablation, and micro electro discharge machining. These meso-scale processes employ subtractive machining technologies (i.e., material removal), unlike LIGA, which is an additive meso-scale process. Meso-scale processes have different material capabilities and machining performance specifications. Machining performance specifications of interest include minimum feature size, feature tolerance, feature location accuracy, surface finish, and material removal rate. Sandia National Laboratories is developing meso-scale electro-mechanical components, which require meso-scale parts that move relative to one another. The meso-scale parts fabricated by subtractive meso-scale manufacturing processes have unique tribology issues because of the variety of materials and the surface conditions produced by the different meso-scale manufacturing processes.

BENAVIDES,GILBERT L.; ADAMS,DAVID P.; YANG,PIN

2000-05-15T23:59:59.000Z

23

Coupling a Mesoscale Numerical Weather Prediction Model with Large-Eddy Simulation for Realistic Wind Plant Aerodynamics Simulations (Poster)  

SciTech Connect (OSTI)

Wind plant aerodynamics are influenced by a combination of microscale and mesoscale phenomena. Incorporating mesoscale atmospheric forcing (e.g., diurnal cycles and frontal passages) into wind plant simulations can lead to a more accurate representation of microscale flows, aerodynamics, and wind turbine/plant performance. Our goal is to couple a numerical weather prediction model that can represent mesoscale flow [specifically the Weather Research and Forecasting model] with a microscale LES model (OpenFOAM) that can predict microscale turbulence and wake losses.

Draxl, C.; Churchfield, M.; Mirocha, J.; Lee, S.; Lundquist, J.; Michalakes, J.; Moriarty, P.; Purkayastha, A.; Sprague, M.; Vanderwende, B.

2014-06-01T23:59:59.000Z

24

Coastal Atmospheric Circulation around an Idealized Cape during Wind-Driven Upwelling Studied from a Coupled Ocean–Atmosphere Model  

Science Journals Connector (OSTI)

The study analyzes atmospheric circulation around an idealized coastal cape during summertime upwelling-favorable wind conditions simulated by a mesoscale coupled ocean–atmosphere model. The domain resembles an eastern ocean boundary with a ...

Natalie Perlin; Eric D. Skyllingstad; Roger M. Samelson

2011-03-01T23:59:59.000Z

25

Posters Mesoscale Simulations of Convective Systems with Data...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

7 Posters Mesoscale Simulations of Convective Systems with Data Assimilation During June 1993 in the Southern Great Plains J. Dudhia Mesoscale and Microscale Meteorology Division...

26

MESOSCALE SIMULATIONS OF POWDER COMPACTION  

SciTech Connect (OSTI)

Mesoscale 3D simulations of shock compaction of metal and ceramic powders have been performed with an Eulerian hydrocode GEODYN. The approach was validated by simulating a well-characterized shock compaction experiment of a porous ductile metal. Simulation results using the Steinberg material model and handbook values for solid 2024 aluminum showed good agreement with experimental compaction curves and wave profiles. Brittle ceramic materials are not as well studied as metals, so a simple material model for solid ceramic (tungsten carbide) has been calibrated to match experimental compaction curves. Direct simulations of gas gun experiments with ceramic powders have been performed and showed good agreement with experimental data. The numerical shock wave profile has same character and thickness as that measured experimentally using VISAR. The numerical results show reshock states above the single-shock Hugoniot line as observed in experiments. We found that for good quantitative agreement with experiments 3D simulations are essential.

Lomov, Ilya; Fujino, Don; Antoun, Tarabay; Liu, Benjamin [Lawrence Livermore National Laboratory, P. O. Box 808, Livermore CA 94551 (United States)

2009-12-28T23:59:59.000Z

27

Postulated Mesoscale Quantum of Internal Friction Hysteresis  

E-Print Network [OSTI]

Evidence is provided, from yet another experiment, for the existence of a mesoscale quantum of internal friction hysteresis, having the value of the electron rest energy divided by the fine structure constant.

Randall D. Peters

2004-05-27T23:59:59.000Z

28

Oceanic mass transport by mesoscale eddies  

Science Journals Connector (OSTI)

...time-mean ocean circulation transports fluid as a conveyor belt, but fluid parcels can also be trapped and transported discretely...continuously, mesoscale eddies can trap fluid parcels within the eddy core and transport them discretely...

Zhengguang Zhang; Wei Wang; Bo Qiu

2014-07-18T23:59:59.000Z

29

Matthew David Parker Department of Marine, Earth, and Atmospheric Sciences Curriculum Vitae  

E-Print Network [OSTI]

EDUCATION ________________________________________________________________________ Colorado State University, Fort Collins, Colorado 2002 Ph.D., Atmospheric science (Mesoscale meteorology) 1999 M.S., Atmospheric. Parker, and J. J. Charney, in press: Regimes of dry convection above wildfires: Sensitivity to fireline

Parker, Matthew D. Brown

30

Mesoscale Simulations of Power Compaction  

SciTech Connect (OSTI)

Mesoscale 3D simulations of metal and ceramic powder compaction in shock waves have been performed with an Eulerian hydrocode GEODYN. The approach was validated by simulating shock compaction of porous well-characterized ductile metal using Steinberg material model. Results of the simulations with handbook values for parameters of solid 2024 aluminum have good agreement with experimental compaction curves and wave profiles. Brittle ceramic materials are not so well studied as metals, so material model for ceramic (tungsten carbide) has been fitted to shock compression experiments of non-porous samples and further calibrated to match experimental compaction curves. Direct simulations of gas gun experiments with ceramic powder have been performed and showed good agreement with experimental data. Numerical shock wave profile has same character and thickness as measured with VISAR. Numerical results show reshock states above the single-shock Hugoniot line also observed in experiments. They found that to receive good quantitative agreement with experiment it is essential to perform 3D simulations.

Lomov, I; Fujino, D; Antoun, T; Liu, B

2009-08-06T23:59:59.000Z

31

EUROCODE 1994, October 24-28 1 University of Karlsruhe, IAKS  

E-Print Network [OSTI]

, Zerfowski, Beth IAKS, University of Karlsruhe #12;EUROCODE 1994, October 24-28 5 Signal point constellation signal point constellation: S = {s1, . . . , sq} IR mapping into signal space: f : A S expected signal energy: E(S) = q l=1 P[sl]E(sl) E(sl) = |sl|2 Euclidean distance distribution: D(S) = {dE(sl, sj) | l

Zerfowski, Detlef

32

Mesoscale model cloud scheme assessment using satellite observations Jean-Pierre Chaboureau, Jean-Pierre Cammas, Patrick J. Mascart, and Jean-Pierre Pinty  

E-Print Network [OSTI]

of the convective towers in the generation of synthetic BT maps. INDEX TERMS: 3329 Meteorology and Atmospheric-scale cloudiness in the model. A similar test conducted on the ice water and the liquid water paths confirms Dynamics: Mesoscale meteorology; 3360 Meteorology and Atmospheric Dynamics: Remote sensing; 3354

Chaboureau, Jean-Pierre

33

Coastal Wave Generation and Wave Breaking over Terrain: Two Problems in Mesoscale Wave Dynamics  

E-Print Network [OSTI]

with open circles). The resolved-scale eddy term is shown by stars (no line), with the background viscous part then being the di erence between the net resolved-scale and resolved-scale eddy parts. : : : : : : : : : : : 36 16 Schematic sea breeze system... breeze and mesoscale convective systems. Gravity wave momentum transport away from topography in particular plays an important role in the momentum budget of the atmosphere and hence the general circulation. The present study addresses two aspects...

Qian, Tingting

2010-07-14T23:59:59.000Z

34

Modelled and observed variability of the atmospheric circulation the Peruvian Current System: 2000-2005  

E-Print Network [OSTI]

on the characteristics of the local equatorward atmospheric circulation. Resolving the mesoscale variability of the heat Mesoscale Model (MM5) and Weather Research and Forecasting (WRF) that were run over the Peruvian Current System (PCS) [0N-19°S; 83°W-68°W] from November 2000- October 2005. Wind data as derived from

35

Mesoscale coupled ocean-atmosphere feedbacks in boundary current systems  

E-Print Network [OSTI]

response of the ocean eddies . The power spectrum of thethe ocean. As such, the larger energy in the power spectrumocean eddies. On the other hand, Smoothed ROMS has higher power

Putrasahan, Dian Ariyani

2012-01-01T23:59:59.000Z

36

Separation of climatological imprints of the Kuroshio Extension and Oyashio fronts on the wintertime atmospheric boundary layer: Their sensitivity to SST resolution prescribed for atmospheric reanalysis  

Science Journals Connector (OSTI)

Mesoscale structures of the wintertime marine atmospheric boundary layer (MABL) as climatological imprints of oceanic fronts within the Kuroshio-Oyashio Extension (KOE) region east of Japan are investigated, by taking advantage of high horizontal ...

Ryusuke Masunaga; Hisashi Nakamura; Takafumi Miyasaka; Kazuaki Nishii; Youichi Tanimoto

37

Coupling between the University of California, Davis, Advanced Canopy–Atmosphere–Soil Algorithm (ACASA) and MM5: Preliminary Results for July 1998 for Western North America  

Science Journals Connector (OSTI)

The University of California, Davis, Advanced Canopy–Atmosphere–Soil Algorithm (ACASA) is coupled to the fifth-generation Pennsylvania State University–National Center for Atmospheric Research (NCAR) Mesoscale Model (MM5) as a land surface ...

R. David Pyles; Bryan C. Weare; Kyaw Tha Paw U; William Gustafson

2003-05-01T23:59:59.000Z

38

Nesting large-eddy simulations within mesoscale simulations for wind energy applications  

SciTech Connect (OSTI)

With increasing demand for more accurate atmospheric simulations for wind turbine micrositing, for operational wind power forecasting, and for more reliable turbine design, simulations of atmospheric flow with resolution of tens of meters or higher are required. These time-dependent large-eddy simulations (LES), which resolve individual atmospheric eddies on length scales smaller than turbine blades and account for complex terrain, are possible with a range of commercial and open-source software, including the Weather Research and Forecasting (WRF) model. In addition to 'local' sources of turbulence within an LES domain, changing weather conditions outside the domain can also affect flow, suggesting that a mesoscale model provide boundary conditions to the large-eddy simulations. Nesting a large-eddy simulation within a mesoscale model requires nuanced representations of turbulence. Our group has improved the Weather and Research Forecasting model's (WRF) LES capability by implementing the Nonlinear Backscatter and Anisotropy (NBA) subfilter stress model following Kosovic (1997) and an explicit filtering and reconstruction technique to compute the Resolvable Subfilter-Scale (RSFS) stresses (following Chow et al, 2005). We have also implemented an immersed boundary method (IBM) in WRF to accommodate complex terrain. These new models improve WRF's LES capabilities over complex terrain and in stable atmospheric conditions. We demonstrate approaches to nesting LES within a mesoscale simulation for farms of wind turbines in hilly regions. Results are sensitive to the nesting method, indicating that care must be taken to provide appropriate boundary conditions, and to allow adequate spin-up of turbulence in the LES domain.

Lundquist, J K; Mirocha, J D; Chow, F K; Kosovic, B; Lundquist, K A

2008-09-08T23:59:59.000Z

39

Formation of mesoscale roughening in 6022-T4 Al sheets deformed in plane-strain tension  

Science Journals Connector (OSTI)

Mesoscale surface-roughening evolution in 6022-T4 Al sheets was ... are central to the formation of mesoscale surface roughening.

Y. S. Choi; H. R. Piehler; A. D. Rollett

2004-02-01T23:59:59.000Z

40

A Regional OceanAtmosphere Model for Eastern Pacific Climate: Toward Reducing Tropical Biases*  

E-Print Network [OSTI]

.5°) of the ROAM enables it to capture mesoscale features, such as tropical instability waves, Central American gap these asymmetric features despite a solar radia- tion forcing at the top of the atmosphere that is zonally uniform

Wang, Yuqing

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Rotational and divergent kinetic energy in the mesoscale model ALADIN  

E-Print Network [OSTI]

Rotational and divergent kinetic energy in the mesoscale model ALADIN By V. BLAZ ICA1 *, N. Z AGAR1 received 7 June 2012; in final form 7 March 2013) ABSTRACT Kinetic energy spectra from the mesoscale. It is shown that about 50% of kinetic energy in the free troposphere in ALADIN is divergent energy

Zagar, Nedjeljka

42

Forbush decreases and solar events seen in the 10 - 20GeV energy range by the Karlsruhe Muon Telescope  

E-Print Network [OSTI]

Since 1993, a muon telescope located at Forschungszentrum Karlsruhe (Karlsruhe Muon Telescope) has been recording the flux of single muons mostly originating from primary cosmic-ray protons with dominant energies in the 10 - 20 GeV range. The data are used to investigate the influence of solar effects on the flux of cosmic-rays measured at Earth. Non-periodic events like Forbush decreases and ground level enhancements are detected in the registered muon flux. A selection of recent events will be presented and compared to data from the Jungfraujoch neutron monitor. The data of the Karlsruhe Muon Telescope help to extend the knowledge about Forbush decreases and ground level enhancements to energies beyond the neutron monitor regime.

I. Braun; J. Engler; J. R. Hörandel; J. Milke

2008-10-27T23:59:59.000Z

43

Mesoscale disturbances in the tropical stratosphere excited by convection: Observations and effects on the stratospheric momentum budget  

SciTech Connect (OSTI)

The importance of the momentum flux of topographically generated mesoscale gravity waves to the extratropical middle atmosphere circulation has been well established for over a decade. Estimates of the zonal forcing due to tropical mesoscale gravity waves, however, are hampered by lack of data on their primarily convective sources. The advent of aircraft measurements over tropical convective systems now makes such estimates possible without the use of ad hoc assumptions about amplitudes and phase speeds. Aircraft measurements from NASA's 1980 Panama and 1987 STEP/Australia Missions show that convectively generated disturbances observed just above the tropopause have horizontal scales comparable to those of the underlying anvils (about 50--100 km) with peak-to-peak isentropic surface variations of about 300--400 m. Satellite imagery of tropical anvil evolution indicates a typical lifetime of about five hours. Assuming that each convective system's impact on the stratosphere can be modeled as a time-dependent [open quotes]mountain[close quotes] with the preceding spatial and time scales, the excited spectrum of gravity waves can be calculated. A suitable quasi-linear wave-mean flow interaction parameterization and satellite-derived cloud area statistics can then be used to evaluate the zonal acceleration as a function of altitude induced by gravity waves from mesoscale convective systems. The results indicate maximum westerly accelerations due to breaking mesoscale gravity waves of almost 0.4 m s[sup [minus]1]/day in the upper stratosphere (in the region of the semiannual oscillation) during September, comparable to but probably smaller than the accelerations induced by planetary-scale Kelvin waves. Calculated easterly accelerations due to breaking mesoscale gravity waves in the QBO region below 35 km are smaller, accounting for about 10% of the required zonal acceleration. 35 refs., 14 figs., 1 tab.

Pfister, L.; Scott, S.; Loewenstein, M. (NASA/Ames Research Center, Moffett Field, CA (United States)); Bowen, S. (San Jose State Univ., CA (United States)); Legg, M. (Synernet, Fremont, CA (United States))

1993-04-15T23:59:59.000Z

44

Mesoscale Quantization and Self-Organized Stability  

E-Print Network [OSTI]

In the world of technology, one of the most important forms of friction is that of rolling friction. Yet it is one of the least studied of all the known forms of energy dissipation. In the present experiments we investigate the oscillatory free-decay of a rigid cube, whose side-length is less than the diameter of the rigid cylinder on which it rests. The resulting free-decay is one of harmonic motion with damping. The non-dissipative character of the oscillation yields to a linear differential equation; however, the damping is found to involve more than a deterministic nonlinearity. Dominated by rolling friction, the damping is sensitive to the material properties of the contact surfaces. For `clean' surfaces of glass on glass, the decay shows features of mesoscale quantization and self-organized stability.

Randall D. Peters

2005-06-16T23:59:59.000Z

45

Satellite Observations of Mesoscale Eddy-Induced Ekman Pumping  

Science Journals Connector (OSTI)

Three mechanisms for self-induced Ekman pumping in the interiors of mesoscale ocean eddies are investigated. The first arises from the surface stress that occurs because of differences between surface wind and ocean velocities, resulting in Ekman ...

Peter Gaube; Dudley B. Chelton; Roger M. Samelson; Michael G. Schlax; Larry W. O’Neill

46

Advances in mesoscale thermal management technologies for microelectronics  

Science Journals Connector (OSTI)

This paper presents recent advances in a number of novel, high-performance cooling techniques for emerging electronics applications. Critical enabling thermal management technologies covered include microchannel transport and micropumps, jet impingement, ... Keywords: Mesoscale, Microelctronics, Thermal management

Suresh V. Garimella

2006-11-01T23:59:59.000Z

47

Life Cycle and Mesoscale Frontal Structure of an Intermountain Cyclone  

Science Journals Connector (OSTI)

High-resolution analyses and MesoWest surface observations are used to examine the life cycle and mesoscale frontal structure of the “Tax Day Storm,” an intermountain cyclone that produced the second lowest sea level pressure observed in Utah ...

Gregory L. West; W. James Steenburgh

2010-07-01T23:59:59.000Z

48

Structures and Dynamics of Quasi-2D Mesoscale Convective Systems  

Science Journals Connector (OSTI)

Recently, three distinct archetypes for midlatitude linear mesoscale convective systems (MCSs) have been identified. This article focuses on the fundamentals of two of these archetypes: convective lines with trailing stratiform (TS) precipitation ...

Matthew D. Parker; Richard H. Johnson

2004-03-01T23:59:59.000Z

49

Toward a Mesoscale Observation Network in Southeast Asia  

Science Journals Connector (OSTI)

The current weather observation network in Southeast Asia is unable to support the accurate monitoring and prediction of the region's predominantly convective weather. Establishing a multisensor mesoscale observation network comprising automated ...

Tieh-Yong Koh; Chee-Kiat Teo

2009-04-01T23:59:59.000Z

50

32ND INTERNATIONAL COSMIC RAY CONFERENCE, BEIJING 2011 Atmospheric "Super Test Beam" for the Pierre Auger Observatory  

E-Print Network [OSTI]

Observatorio Pierre Auger, Av. San Martin Norte 304, 5613 Malarg¨ue, Argentina 3 Karlsruhe Institute and as a function of height in the atmosphere where high energy air showers develop. The data have been recorded Observatory location in Argentina to effect a major upgrade of the central laser facility. Keywords

51

Technical Sessions Parameterization of Convective Clouds, Mesoscale...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Convective-Generated Clouds W. R. Cotton Department of Atmospheric Science Colorado State University Fort Collins, CO 80523 This presentation is a summary of research...

52

Towards quantifying mesoscale flows in the troposphere using Raman lidar and sondes  

SciTech Connect (OSTI)

Water vapor plays an important role in the energetics of the boundary layer processes which in turn play a key role in regulating regional and global climate. It plays a primary role in Earth`s hydrological cycle, in radiation balance as a direct absorber of infrared radiation, and in atmospheric circulation as a latent heat energy source as well as in determining cloud development and atmospheric stability. Water vapor concentration, expressed as a mass mixing ratio, is conserved in all meteorological processes except condensation and evaporation. This property makes it an ideal choice for studying many of the atmosphere`s dynamic features. Raman scattering measurements from lidar also allow retrieval of water vapor mixing ratio profiles at high temporal and vertical resolution. Raman lidars sense water vapor to altitudes not achievable with towers and surface systems, sample the atmosphere at much higher temporal resolution than radiosondes or satellites, and do not require strong vertical gradients or turbulent fluctuations in temperature that is required by acoustic sounders and radars. Analysis of highly resolved water vapor profiles are used here to characterize two important mesoscale flows: thunderstorm outflows and a cold front passage.

Demoz, B.; Evans, K. [Univ. of Maryland Baltimore County, Baltimore, MD (United States); Starr, D. [NASA, Greenbelt, MD (United States). Goddard Space Flight Center] [and others

1998-03-01T23:59:59.000Z

53

Mesoscale Origin of the Enhanced Cycling-Stability of the Si...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mesoscale Origin of the Enhanced Cycling-Stability of the Si-Conductive Polymer Anode for Li-ion Batteries. Mesoscale Origin of the Enhanced Cycling-Stability of the Si-Conductive...

54

Recipes for Correcting the Impact of Effective Mesoscale Resolution on the Estimation of Extreme Winds  

Science Journals Connector (OSTI)

Extreme winds derived from simulations using mesoscale models are underestimated because of the effective spatial and temporal resolutions. This is reflected in the spectral domain as an energy deficit in the mesoscale range. The energy deficit ...

Xiaoli Guo Larsén; Søren Ott; Jake Badger; Andrea N. Hahmann; Jakob Mann

2012-03-01T23:59:59.000Z

55

Self-Assembly of Mesoscale Isomers: The Role of Pathways and Degrees of Freedom  

E-Print Network [OSTI]

Self-Assembly of Mesoscale Isomers: The Role of Pathways and Degrees of Freedom Shivendra Pandey1 geometric path sampling and a mesoscale experimental model to investigate the self-assembly of a model. Citation: Pandey S, Johnson D, Kaplan R, Klobusicky J, Menon G, et al. (2014) Self-Assembly of Mesoscale

Menon, Govind

56

Silicon Micromachined Dimensional Calibration Artifact for Mesoscale Measurement Machines  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Silicon Micromachined Dimensional Calibration Silicon Micromachined Dimensional Calibration Artifact for Mesoscale Measurement Machines 1 Silicon Micromachined Dimensional Calibration Artifact for Mesoscale Measurement Machines 2 Sandia National Laboratories PO Box 5800 Albuquerque, NM 87185 USA Hy D. Tran, PhD, PE Phone: (505)844-5417 Fax: (505)844-4372 hdtran@sandia.gov AFFIRMATION: I affirm that all information submitted as a part of, or supplemental to, this entry is a fair and accurate representation of this product. ___________________________________ Hy D. Tran Not a joint entry. Silicon Micromachined Dimensional Calibration Artifact for Mesoscale Measurement Machines The silicon hybrid artifact is an anisotropic-etched silicon standard that is used as a calibration reference artifact to calibrate vision-based and

57

ARM - Publications: Science Team Meeting Documents: Evaluation of mesoscale  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Evaluation of mesoscale model cloud simulations of the March 2000 IOP Evaluation of mesoscale model cloud simulations of the March 2000 IOP Tselioudis, George NASA/Goddard Institute for Space Studies A suite of mesoscale models was used to produce month-long runs of the March 2000 SGP IOP. The model cloud fields were evaluated against satellite and in-situ observations, using both monthly statistics of cloud properties and instantaneous cloud property distributions. It was found that compared to satellite retrievals models tend to overestimate cloud optical thickness in all dynamic regimes. The reasons for the differences in satellite and model cloud fields were investigated. Preliminary results indicate that the large model optical depths may be caused by an overestimate of cloud ice water amounts in the model simulations. Part of the differences, however,

58

Mesoscale Climatic Simulation of Surface Air Temperature Cooling by Highly  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mesoscale Climatic Simulation of Surface Air Temperature Cooling by Highly Mesoscale Climatic Simulation of Surface Air Temperature Cooling by Highly Reflective Greenhouses in SE Spain Title Mesoscale Climatic Simulation of Surface Air Temperature Cooling by Highly Reflective Greenhouses in SE Spain Publication Type Journal Article Year of Publication 2013 Authors Campra, Pablo, and Dev Millstein Journal Environmental Science & Technology Volume 47 Issue 21 Pagination 12284 - 12290 Date Published 11/2013 ISSN 0013-936X Keywords buildings, Heat Island Group Abstract A long-term local cooling trend in surface air temperature has been monitored at the largest concentration of reflective greenhouses in the world, at the Province of Almeria, SE Spain, associated with a dramatic increase in surface albedo in the area. The availability of reliable long-term climatic field data at this site offers a unique opportunity to test the skill of mesoscale meteorological models describing and predicting the impacts of land use change on local climate. Using the Weather Research and Forecast (WRF) mesoscale model, we have run a sensitivity experiment to simulate the impact of the observed surface albedo change on monthly and annual surface air temperatures. The model output showed a mean annual cooling of 0.25 °C associated with a 0.09 albedo increase, and a reduction of 22.8 W m-2 of net incoming solar radiation at surface. Mean reduction of summer daily maximum temperatures was 0.49 °C, with the largest single-day decrease equal to 1.3 °C. WRF output was evaluated and compared with observations. A mean annual warm bias (MBE) of 0.42 °C was estimated. High correlation coefficients (R2 > 0.9) were found between modeled and observed values. This study has particular interest in the assessment of the potential for urban temperature cooling by cool roofs deployment projects, as well as in the evaluation of mesoscale climatic models performance.

59

MESOSCALE MODELLING OF WIND ENERGY OVER NON-HOMOGENEOUS TERRAIN  

E-Print Network [OSTI]

MESOSCALE MODELLING OF WIND ENERGY OVER NON-HOMOGENEOUS TERRAIN (ReviewArticle) Y. MAHRER.1. OBSERVATIONALAPPROACHES Evaluations of wind energy based on wind observations (usually surface winds) at well, the resolution of the wind energy pattern throughout an extended area by this methodology requires a large number

Pielke, Roger A.

60

WIND ATLAS FOR EGYPT: MEASUREMENTS, MICRO-AND MESOSCALE MODELLING  

E-Print Network [OSTI]

WIND ATLAS FOR EGYPT: MEASUREMENTS, MICRO- AND MESOSCALE MODELLING Niels G. Mortensen1 , Jens Energy Authority, Cairo, Egypt Ahmed El Sayed Yousef, Adel Mahmoud Awad, Mahmoud Abd-El Raheem Ahmed Meteorological Authority, Cairo, Egypt ABSTRACT The results of a comprehensive, 8-year wind resource assessment

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Mesoscale predictability of an extreme warm-season precipitation event  

E-Print Network [OSTI]

. The Penn State University/NCAR Mesoscale Model version 5 (MM5) was used to conduct predictability experiments, which follow closely to the research conducted by Zhang et al. A control simulation initialized at 00Z 1 July is established over a 30-km grid...

Odins, Andrew Michael

2005-02-17T23:59:59.000Z

62

Molecule-Mimetic Chemistry and Mesoscale Self-Assembly  

E-Print Network [OSTI]

Molecule-Mimetic Chemistry and Mesoscale Self-Assembly NED B. BOWDEN, MARCUS WECK, INSUNG S. CHOI systems. We suggest that it will be possible to develop complex structures composed of "objects" that self-assemble, shape recognition, and size exclusion can be used to guide the self-assembly of these objects

Prentiss, Mara

63

Mesoscale Science: Lessons from and Opportunities for Nanoscience  

Science Journals Connector (OSTI)

Earlier this month, I attended and spoke at a workshop of the Chemical Sciences Roundtable on mesoscale science. ... We hope that having ACS Nano to share both challenges and successes across communities will help accelerate advances by cross-fertilizing efforts and by inspiring scientists and engineers around the world. ...

Paul S. Weiss

2014-11-25T23:59:59.000Z

64

Mesoscale symmetries explain dynamical equivalence of food webs  

Science Journals Connector (OSTI)

A goal of complex system research is to identify the dynamical implications of network structure. While early results focused mainly on local or global structural properties, there is now growing interest in mesoscale structures that comprise more than one node but not the whole network. A central challenge is to discover under what conditions the occurrence of a specific mesoscale motif already allows conclusions on the dynamics of a network as a whole. In this paper, we investigate the dynamics of ecological food webs, complex heterogeneous networks of interacting populations. Generalizing the results of MacArthur and Sánchez-García (2009 Phys. Rev. E 80 26117), we show that certain mesoscale symmetries imply the existence of localized dynamical modes. If these modes are unstable the occurrence of the corresponding mesoscale motif implies dynamical instability regardless of the structure of the embedding network. In contrast, if the mode is stable it means that the symmetry can be exploited to reduce the number of nodes in the model, without changing the dynamics of the system. This result explains a previously observed dynamical equivalence between food webs containing a different number of species.

Helge Aufderheide; Lars Rudolf; Thilo Gross

2012-01-01T23:59:59.000Z

65

Atmospheric Chemistry  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

competencies Atmospheric Chemistry Atmospheric Chemistry is the study of the composition of the atmosphere, the sources and fates of gases and particles in air, and changes induced...

66

Mesoscale Modeling of LX-17 Under Isentropic Compression  

SciTech Connect (OSTI)

Mesoscale simulations of LX-17 incorporating different equilibrium mixture models were used to investigate the unreacted equation-of-state (UEOS) of TATB. Candidate TATB UEOS were calculated using the equilibrium mixture models and benchmarked with mesoscale simulations of isentropic compression experiments (ICE). X-ray computed tomography (XRCT) data provided the basis for initializing the simulations with realistic microstructural details. Three equilibrium mixture models were used in this study. The single constituent with conservation equations (SCCE) model was based on a mass-fraction weighted specific volume and the conservation of mass, momentum, and energy. The single constituent equation-of-state (SCEOS) model was based on a mass-fraction weighted specific volume and the equation-of-state of the constituents. The kinetic energy averaging (KEA) model was based on a mass-fraction weighted particle velocity mixture rule and the conservation equations. The SCEOS model yielded the stiffest TATB EOS (0.121{micro} + 0.4958{micro}{sup 2} + 2.0473{micro}{sup 3}) and, when incorporated in mesoscale simulations of the ICE, demonstrated the best agreement with VISAR velocity data for both specimen thicknesses. The SCCE model yielded a relatively more compliant EOS (0.1999{micro}-0.6967{micro}{sup 2} + 4.9546{micro}{sup 3}) and the KEA model yielded the most compliant EOS (0.1999{micro}-0.6967{micro}{sup 2}+4.9546{micro}{sup 3}) of all the equilibrium mixture models. Mesoscale simulations with the lower density TATB adiabatic EOS data demonstrated the least agreement with VISAR velocity data.

Springer, H K; Willey, T M; Friedman, G; Fried, L E; Vandersall, K S; Baer, M R

2010-03-06T23:59:59.000Z

67

Convective cell development and propagation in a mesoscale convective complex  

E-Print Network [OSTI]

~ , National Fisheries University of Pusan Chairman of Advisory Committee: Dr ~ Kennth CD Brundidge A case study was made of the mesoscale convective complex (MCC) which occurred over southern Oklahoma and northern Texas on 27 May 1981. This storm moved... in an east-southeasterly direction and during much of its lifetime was observable by radars at Oklahoma City, OK and Stephenville, TX. It was found that the direction of cell (VIP level 3 or more reflectivity) propagation was somewhat erratic...

Ahn, Yoo-Shin

2012-06-07T23:59:59.000Z

68

Center for Mesoscale Transport Properties (m2M) | U.S. DOE Office...  

Office of Science (SC) Website

from molecular to mesoscale (m2m); to minimize heat and maximize work of electrical energy storage devices. Research Topics energy storage (including batteries and...

69

Mesoscale Self-Assembly of Hexagonal Plates Using Lateral Capillary Forces: Synthesis Using the "Capillary Bond"  

E-Print Network [OSTI]

Mesoscale Self-Assembly of Hexagonal Plates Using Lateral Capillary Forces: Synthesis Using examines self-assembly in a quasi-two-dimensional, mesoscale system. The system studied here involves and hydrophilic faces on the hexagonal plates led to three outcomes: (i) the extension of the strategies of self-assembly

Prentiss, Mara

70

MESOSCALE SIMULATION OF ATMOSPHERIC RESPONSE TO CHAOS TERRAIN FORMATION. , S.C.R. Rafkin2  

E-Print Network [OSTI]

(kite@berkeley.edu), 2 Department of Space Studies, Southwest Research Institute, Boulder, Colorado associated with chaos terrain formation may mobilize sand and perhaps gravel, but not boulders. Model, momentum and moisture are parameter- ized using a Monin-Obukhov scheme. Boundary conditions: We flooded

Kite, Edwin

71

Modeling the Atmospheric Boundary Layer Wind Response to Mesoscale Sea Surface Temperature  

E-Print Network [OSTI]

to local SST perturbations decreases rapidly with height to near-zero at 150-300m. The simulated wind speed of local SST perturbations, and the orientation of the surface wind to the SST gradient. #12;3 1. Introduction Positive correlations of local surface wind anomalies with sea surface temperature (SST) anomalies

72

A numerical study of mesoscale convection in a rotating tropical atmosphere  

E-Print Network [OSTI]

similar to the profile of a tropical disturbance. The meso-p forcing of convection consisted of' seven temperature perturbations con- fined below 2. 4 km at intervals of 8 km out to 60 km. The meso-9 forcing of convection comprised of a cosine thermal... perturbation field out to 75 km. Two different classes of simulations were performed. The first part explored how background vorticity affects convection generated by meso-7 and meso-9 forcing. The second part investigated how meso-9 forcing of convection...

Fitzpatrick, Patrick James

1992-01-01T23:59:59.000Z

73

TY JOUR T1 Mesoscale Climatic Simulation of Surface Air Temperature Cooling  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mesoscale Climatic Simulation of Surface Air Temperature Cooling Mesoscale Climatic Simulation of Surface Air Temperature Cooling by Highly Reflective Greenhouses in SE Spain JF Environmental Science Technology A1 Campra Pablo A1 Dev Millstein KW buildings KW Heat Island Group AB p span A long term local cooling trend in surface air temperature has been monitored at the largest concentration of reflective greenhouses in the world at the Province of Almeria SE Spain associated with a dramatic increase in surface albedo in the area The availability of reliable long term climatic field data at this site offers a unique opportunity to test the skill of mesoscale meteorological models describing and predicting the impacts of land use change on local climate Using the Weather Research and Forecast WRF mesoscale model we have run a

74

Mesoscale Convective Systems in Relation to African and Tropical Easterly Jets  

Science Journals Connector (OSTI)

This paper documents the interaction processes between mesoscale convective systems (MCS), the tropical easterly jet (TEJ), and the African easterly jet (AEJ) over West Africa during the monsoon peak of 2006 observed during the African Monsoon ...

L. Besson; Y. Lemaître

2014-09-01T23:59:59.000Z

75

Simulating Typhoon Floods with Gauge Data and Mesoscale-Modeled Rainfall in a Mountainous Watershed  

Science Journals Connector (OSTI)

A physically based distributed hydrological model was applied to simulate typhoon floods over a mountainous watershed in Taiwan. The meteorological forcings include the observed gauge rainfall data and the predicted rainfall data from a mesoscale ...

Ming-Hsu Li; Ming-Jen Yang; Ruitang Soong; Hsiao-Ling Huang

2005-06-01T23:59:59.000Z

76

Meso-scale eddies affect near-surface turbulent exchange: evidence from lidar and tower measurements  

Science Journals Connector (OSTI)

The eddy-covariance technique tends to underestimate the turbulent heat fluxes, which results in the non-closure of the surface energy balance. This study shows experimental evidence that meso-scale turbulent organized structures, which are ...

Fabian Eder; Marius Schmidt; Thomas Damian; Katja Träumner; Matthias Mauder

77

Evolution of Mesoscale Precipitation Band Environments within the Comma Head of Northeast U.S. Cyclones  

Science Journals Connector (OSTI)

This paper explores the mesoscale forcing and stability evolution of intense precipitation bands in the comma head sector of extratropical cyclones using the 32-km North American Regional Reanalysis, hourly 20-km Rapid Update Cycle analyses, and ...

David R. Novak; Brian A. Colle; Anantha R. Aiyyer

2010-06-01T23:59:59.000Z

78

Seasonal Mesoscale and Submesoscale Eddy Variability along the North Pacific Subtropical Countercurrent  

Science Journals Connector (OSTI)

Located at the center of the western North Pacific Subtropical Gyre, the Subtropical Countercurrent (STCC) is not only abundant in mesoscale eddies, but also exhibits prominent submesoscale eddy features. Output from a ° high-resolution OGCM ...

Bo Qiu; Shuiming Chen; Patrice Klein; Hideharu Sasaki; Yoshikazu Sasai

2014-12-01T23:59:59.000Z

79

Impacts on ocean heat from transient mesoscale eddies in a hierarchy of climate models  

Science Journals Connector (OSTI)

We characterize impacts on heat in the ocean climate system from transient ocean mesoscale eddies. Our tool is a suite of centennial-scale 1990 radiatively forced numerical climate simulations from three GFDL coupled models comprising the CM2-O ...

Stephen M. Griffies; Michael Winton; Whit G. Anderson; Rusty Benson; Thomas L. Delworth; Carolina O. Dufour; John P. Dunne; Paul Goddard; Adele k. Morrison; Anthony Rosati; Andrew T. Wittenberg; Jianjun Yin; Rong Zhang

80

A Climatology of Midlatitude Mesoscale Convective Vortices in the Rapid Update Cycle  

Science Journals Connector (OSTI)

Climatological characteristics of mesoscale convective vortices (MCVs) occurring in the state of Oklahoma during the late spring and summer of four years are investigated. The MCV cases are selected based on vortex detection by an objective ...

Eric P. James; Richard H. Johnson

2010-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Tests of an ensemble Kalman filter for mesoscale and regional-scale data assimilation  

E-Print Network [OSTI]

This dissertation examines the performance of an ensemble Kalman filter (EnKF) implemented in a mesoscale model in increasingly realistic contexts from under a perfect model assumption and in the presence of significant model error with synthetic...

Meng, Zhiyong

2007-09-17T23:59:59.000Z

82

The supercell thunderstorm on 8 June 1990: Mesoscale analysis and radar observations  

Science Journals Connector (OSTI)

Surface mesoscale analysis helps to explain these different storm evolutions due to interaction among local circulations, Adriatic Sea and orography. While dry wind (foehn) dumps the thermodynamic instability in ...

P. P. Alberoni; S. Nanni; M. Crespi; M. Monai

1996-01-01T23:59:59.000Z

83

Analysis of Strengthening and Dissipating Mesoscale Convective Systems Propagating off the West African Coast  

Science Journals Connector (OSTI)

A large number of Atlantic tropical depressions are generated in the eastern basin in relation to the African easterly wave (AEW) and embedded mesoscale convective systems (MCSs) coming from the African continent. In this paper, the structures of ...

Abdou L. Dieng; Laurence Eymard; Saidou M. Sall; Alban Lazar; Marion Leduc-Leballeur

2014-12-01T23:59:59.000Z

84

Heuristic correction of wind speed mesoscale models simulations for wind farms prospecting and micrositing  

Science Journals Connector (OSTI)

Abstract The distribution of surface-level wind speeds over a given area is important information that is related to several processes in wind farm prospecting, design and micrositing. This information is often obtained from simulations using mesoscale models that take variables from global models as starting points. Improved outputs from mesoscale models can lead to reduced error compared to real wind speeds in the study area if in situ wind speed measurements are available. In this paper, we present several techniques to correct surface wind speed simulations from mesoscale models using data from measuring stations in wind farms. Specifically, we propose different heuristic corrections of the outputs from mesoscale models by means of surface fitting between the Weibull parameters of the wind speed series (from the mesoscale model) and those from the measuring stations (real wind speed) in the wind farm. The proposed methodology has direct applications in wind farm design, site prospection and micrositing. The good performance of our method is evident in the more accurate surface wind speeds obtained from mesoscale models in two wind farm prospection sites in Spain, where several measuring towers are installed.

B. Saavedra-Moreno; S. Salcedo-Sanz; C. Casanova-Mateo; J.A. Portilla-Figueras; L. Prieto

2014-01-01T23:59:59.000Z

85

Musical Atmospherics  

Science Journals Connector (OSTI)

... THE characteristics of audio musical atmospherics which are obtained when an ... musical atmospherics which are obtained when an audio amplifier is placed in a long line or aerial have been discussed from time to ...

T. L. ECKERSLEY

1935-01-19T23:59:59.000Z

86

The influence of mesoscale eddies on shallow water acoustic propagation  

Science Journals Connector (OSTI)

Acoustic propagation measurements in 150 m depth on the Florida escarpment observe the effects of the passage of a cyclonic eddy. As the stream core of the Florida Current meanders the eddy is formed and propagates along the shelf edge. The sequence over a roughly a fortnight is as follows: ahead of the eddy warm surface water and cold bottom water are swept onto the terrace forming a steep thermocline and corresponding strong downward refracting C(z). The gradient produce intense focused RBR arrivals and the thermocline becomes a duct for internal waves to propagate shoreward. At first the internal wave energy is minimal and propagation is stable and coherent. As the internal tides attempt to propagate on shelf the sound speed field and the acoustic signals become increasingly variable. The variability reaches a crescendo as the 200 m long internal tide is blocked from propagating on to the narrower shelf and begins to break and overturn producing small?scale variability. As the eddy passes nearly iso?thermal conditions are restored along with quiescent internal wave fields and reduced signal variability. Here the effects are quantized with data from fixed?system acoustic and oceanographic measurements demonstrating that the mesoscale determines acoustic propagation conditions days in advance.

2003-01-01T23:59:59.000Z

87

Interpreting Temperature Strain Data from Meso-Scale Clathrate Experiments  

SciTech Connect (OSTI)

Gas hydrates are important in global climate change, carbon sequestra- tion, and seafloor stability. Currently, formation and dissociation pathways are poorly defined. We present a new approach for processing large amounts of data from meso-scale experiments, such as the LUNA distributed sensing system (DSS) in the seafloor process simulator (SPS) at Oak Ridge National Laboratory. The DSS provides a proxy for temperature measurement with a high spatial resolution allowing the heat of reaction during gas hydrate formation/dissociation to aid in locating clathrates in the vessel. The DSS fibers are placed in the sediment following an Archimedean spiral design and then the position of each sensor is solved by iterating over the arc length formula with Newtons method. The data is then gridded with 1 a natural neighbor interpolation algorithm to allow contouring of the data. The solution of the sensor locations is verified with hot and cold stimulus in known locations. An experiment was preformed with a vertically split column of sand and silt. The DSS system clearly showed hydrate forming in the sand first, then slowly creeping into the silt. Similar systems and data processing techniques could be used for monitoring of hydrates in natural environments or in any situation where a hybrid temperature/strain index is useful. Further ad- vances in fiber technology allow the fiber to be applied in any configuration and the position of each sensor to be precisely determined making practical applications easier.

Leeman, John R [ORNL; Rawn, Claudia J [ORNL; Ulrich, Shannon M [ORNL; Elwood Madden, Megan [University of Oklahoma, Norman; Phelps, Tommy Joe [ORNL

2012-01-01T23:59:59.000Z

88

MICRO-SEISMOMETERS VIA ADVANCED MESO-SCALE FABRICATION  

SciTech Connect (OSTI)

The Department of Energy (DOE) and the National Nuclear Security Administration (NNSA) seek revolutionary sensing innovations for the monitoring of nuclear detonations. Performance specifications are to be consistent with those obtainable by only an elite few products available today, but with orders of magnitude reduction in size, weight, power, and cost. The proposed commercial innovation calls upon several technologies including the combination of meso-scale fabrication and assembly, photonics-based displacement / motion detection methods, and the use of digital control electronics . Early Phase II development has demonstrated verified and repeatable sub 2ng noise floor from 3Hz to 100Hz, compact integration of 3-axis prototypes, and robust deployment exercises. Ongoing developments are focusing on low frequency challenges, low power consumption, ultra-miniature size, and low cross axis sensitivity. We are also addressing the rigorous set of specifications required for repeatable and reliable long-term explosion monitoring, including thermal stability, reduced recovery time from mass re-centering and large mechanical shocks, sensitivity stability, and transportability. Successful implementation will result in small, hand-held demonstration units with the ability to address national security needs of the DOE/NNSA. Additional applications envisioned include military/defense, scientific instrumentation, oil and gas exploration, inertial navigation, and civil infrastructure monitoring.

Garcia, Caesar A; Onaran, Guclu; Avenson, Brad; Hall, Neal

2014-11-07T23:59:59.000Z

89

Numerical Simulation of the Meso-? Scale Structure and Evolution of the 1977 Johnstown Flood. Part II: Inertially Stable Warm-Core Vortex and the Mesoscale Convective Complex  

Science Journals Connector (OSTI)

A mesoscale warm-core vortex associated with the mesoscale convective complex (MCC) that produced the 1977 Johnstown flood is examined using a three-dimensional nested-grid model simulation of the flood episode. In the simulation, the vortex ...

Da-Lin Zhang; J. Michael Fritsch

1987-09-01T23:59:59.000Z

90

Mesoscale Convective Vortices in Multiscale, Idealized Simulations: Dependence on Background State, Interdependency with Moist Baroclinic Cyclones, and Comparison with BAMEX Observations  

Science Journals Connector (OSTI)

A set of multiscale, nested, idealized numerical simulations of mesoscale convective systems (MCSs) and mesoscale convective vortices (MCVs) was conducted. The purpose of these simulations was to investigate the dependence of MCV development and ...

Robert J. Conzemius; Michael T. Montgomery

2010-04-01T23:59:59.000Z

91

Atmospheric Neutrinos  

E-Print Network [OSTI]

This paper is a brief overview of the theory and experimental data of atmospheric neutrino production at the fiftieth anniversary of the experimental discovery of neutrinos.

Thomas K. Gaisser

2006-12-11T23:59:59.000Z

92

Mesoscale Tank Experiments for Investigating Carbon Tetrachloride Biodegradation  

SciTech Connect (OSTI)

Mesoscale tank experiments were performed to simulate bioremediation of saturated zone carbon tetrachloride (CCl4) originating from a vadose zone carbon tetrachloride source. The mesoscale tank is 2-m wide by 2-m high by 3-m long and was constructed of stainless steel, yielding a total volume of 12 m3. Simulated geology within the tank consisted of two unconsolidated sand layers separated by a clay layer containing variable-sized stainless steel tubes that represented fractures within a consolidated porous medium. The thickness of the upper sand layer was approximately 55 cm, the thickness of the virtual fracture layer was 25 cm, and the thickness of the lower sand layer was approximately 98 cm. The water table was located at an elevation of approximately 54 cm from the bottom of the tank. CCl4 was added to the sealed tank by pouring 500 ml of neat CCl4 into a beaker buried approximately 10 cm below the upper sand surface through a stainless steel tube. The CCl4 was then allowed to partition through the reactor over time, eventually coming to equilibrium. Once CCl4 equilibrium had occurred in the saturated zone (~500 ppb); the reactor was bioaugmented with a CCl4 degrading culture enriched from the Subsurface Disposal Area at the INEEL. The culture was grown to a cell density of ~ 1.0 x 108 cells/ml and injected into the simulated aquifer through a center sampling port. Following injection of the culture, an initial aliquot of lactate (1,000 g/L), nitrogen, and phosphorus were added to the reactor. Lactate was injected every 3 – 5 days for one month. After 1 month of operation, a continuous supply of lactate (1,000 g/L) was pumped into the reactor at an average rate of 50 mL/min. CCl4 concentrations in the unsaturated zone were measured using hollow fiber membrane samplers, while liquid samples were analyzed to monitor levels in the simulated aquifer zone. Samples were also taken for analysis of volatile organic acids and cell density. As would be expected, increases in cell density over the length of the cell correlated with the flow of the water through the cell. One week following injection microbes and lactate, cell numbers were in the range of 5.0 x 106 cells/mL, by the end of the experiment cell numbers had increased to approximately 1.94 x 107 cells/mL. Five days after lactate injection was initiated, chloroform appeared in liquid samples taken for chlorinated VOC analysis. CCl4 concentrations in the liquid phase dropped to approximately 180 ppb. At the conclusion of the batch lactate injection phase of the bioaugmentation, CCl4 levels averaged 40 ppb and chloroform levels averaged 44 ppb. Interestingly, once continuous lactate addition was initiated, CCl4 concentrations in the saturated zone increased with spikes as high as 3,000 ppb. Chloroform concentrations also increased following continuous addition of lactate. Since the CCl4 source in the breaker had been depleted, vadose zone concentrations of CCl4 dropped steadily during addition of lactate to the saturated zone. CCl4 levels of ~ 800 ppmv were noted at the beginning of the experiment, levels decreased to below 200 ppmv by the end of the bioaugmentation phase. No chloroform was noted in the vadose zone during testing.

Brady D. Lee; Robert J. Lenhard

2005-06-01T23:59:59.000Z

93

Atmospheric tritium  

SciTech Connect (OSTI)

Research progress for the year 1979 to 1980 are reported. Concentrations of tritiated water vapor, tritium gas and tritiated hydrocarbons in the atmosphere at selected sampling points are presented. (ACR)

Oestlund, H.G.; Mason, A.S.

1980-01-01T23:59:59.000Z

94

Meso-Scale Planning for Multi-Agent Navigation Liang He Jur van den Berg  

E-Print Network [OSTI]

Meso-Scale Planning for Multi-Agent Navigation Liang He Jur van den Berg Abstract-- We introduce are with the of School of Computing, University of Utah. E-mail: lianghe.hust@gmail.com, berg@cs.utah.edu. Fig. 1

van den Berg, Jur

95

Mesoscale energetics and ows induced by sea-land and mountain-valley contrasts  

E-Print Network [OSTI]

Mesoscale energetics and ¯ows induced by sea-land and mountain-valley contrasts S. Federico1 , G. A October 1999 Abstract. We study the relative importance of sea-land and mountain-valley thermal contrasts and the west-facing slopes in the afternoon. The local thermally driven winds follow the development

Paris-Sud XI, Université de

96

Larval fish assemblages and mesoscale oceanographic structure along the Mesoamerican Barrier Reef System  

E-Print Network [OSTI]

Larval fish assemblages and mesoscale oceanographic structure along the Mesoamerican Barrier Reef Caribbean region, and contains spawning sites for a number of reef fish species. Despite this, little is known of the distribution and transport of pelagic fish larvae in the area, and basic in situ

97

Parameterized Mesoscale Forcing Mechanisms for Initiating Numerically Simulated Isolated Multicellular Convection  

E-Print Network [OSTI]

Multicellular Convection ADRIAN M. LOFTUS* School of Meteorology, University of Oklahoma, Norman, Oklahoma DANIEL B. WEBER Center for Analysis and Prediction of Storms, University of Oklahoma, Norman, Oklahoma CHARLES A. DOSWELL III Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma

Doswell III, Charles A.

98

Evaluation of mesoscale convective systems in South America using multiple satellite products and an objectbased approach  

E-Print Network [OSTI]

Evaluation of mesoscale convective systems in South America using multiple satellite products­2003 in the La Plata river basin, southeastern South America, were analyzed with the Contiguous Rain Area (CRA; Salby and Callaghan, 1997]. However, in South America, few studies have assessed the validity

Ebert, Beth

99

Lagrangian study of transport and mixing in a mesoscale eddy street  

E-Print Network [OSTI]

We use dynamical systems approach and Lagrangian tools to study surface transport and mixing of water masses in a selected coastal region of the Japan Sea with moving mesoscale eddies associated with the Primorskoye Current. Lagrangian trajectories are computed for a large number of particles in an interpolated velocity field generated by a numerical regional multi-layer eddy-resolving circulation model. We compute finite-time Lyapunov exponents for a comparatively long period of time by the method developed and plot the Lyapunov synoptic map quantifying surface transport and mixing in that region. This map uncovers the striking flow structures along the coast with a mesoscale eddy street and repelling material lines. We propose new Lagrangian diagnostic tools --- the time of exit of particles off a selected box, the number of changes of the sign of zonal and meridional velocities --- to study transport and mixing by a pair of strongly interacting eddies often visible at sea-surface temperature satellite images in that region. We develop a technique to track evolution of clusters of particles, streaklines and material lines. The Lagrangian tools used allow us to reveal mesoscale eddies and their structure, to track different phases of the coastal flow, to find inhomogeneous character of transport and mixing on mesoscales and submesoscales and to quantify mixing by the values of exit times and the number of times particles wind around the eddy's center.

S. V. Prants; M. V. Budyansky; V. I. Ponomarev; M. Yu. Uleysky

2012-02-02T23:59:59.000Z

100

Spatial-temporal mesoscale modelling of rainfall intensity using gage and radar data  

E-Print Network [OSTI]

Spatial-temporal mesoscale modelling of rainfall intensity using gage and radar data Montserrat fields. Doppler radar data offer better spatial and temporal coverage, but Doppler radar measures values. We use spatial logistic regression to model the probability of rain for both sources of data

Reich, Brian J.

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

A coupled mesoscale–microscale framework for wind resource estimation and farm aerodynamics  

Science Journals Connector (OSTI)

Abstract This study discusses the development of a coupled mesoscale–microscale framework for wind resource estimation and farm aerodynamics. WINDWYO is a computational framework for performing coupled mesoscale–microscale simulations. The framework is modular, automated and supports coupling of different mesoscale and microscale solvers using overset or matched grids. The modular nature of the framework and the support for overset grids allows the independent development of mesoscale and microscale solvers and the efficient coupling between the codes. The performance of the framework is evaluated by coupling Weather Research and Forecasting (WRF) model with three microscale computational fluid dynamics (CFD) codes of varying complexity. The solvers used are: (i) UWake: a blade element model with free-vortex wake, (ii) Flowyo: large eddy simulation code with actuator line/disk parametrization of the wind turbine and (iii) HELIOS: detached eddy simulation code with full rotor modeling and adaptive mesh refinement. Power predictions and wake visualization of single turbine and off-shore Lillgrund wind farm in uniform and turbulent inflow are used to demonstrate the capabilities of the framework.

Harish Gopalan; Christopher Gundling; Kevin Brown; Beatrice Roget; Jayanarayanan Sitaraman; Jefferey D. Mirocha; Wayne O. Miller

2014-01-01T23:59:59.000Z

102

Temporal Changes in Wind as Objects for Evaluating Mesoscale Numerical Weather Prediction  

E-Print Network [OSTI]

a method of evaluating numerical weather prediction models by comparing the characteristics of temporal for biases in features forecast by the model. 1. Introduction Verification of numerical weather predictionTemporal Changes in Wind as Objects for Evaluating Mesoscale Numerical Weather Prediction DARAN L

Knievel, Jason Clark

103

Radar, satellite, and lightning characteristics of select mesoscale convective systems in Texas  

E-Print Network [OSTI]

This study compares radar data from the League City, Texas WSR-88D and cloud-to-ground (CG) lightning data for a set of eight mesoscale convective systems (MCSs) which occur at various stages of development along the upper Texas Gulf Coast. Vertical...

Toracinta, Ernest Richard

2012-06-07T23:59:59.000Z

104

The Tilt of the Leading Edge of Mesoscale Tropical Convective Lines  

Science Journals Connector (OSTI)

The tilt with height of the leading edge of seven mesoscale convective lines in GATE is determined by two independent methods. When averaged over time and along the line axis, the tilt is found to he surprisingly shallow, between 20 and 35 ...

M. A. LeMone; G. M. Barnes; E. J. Szoke; E. J. Zipser

1984-03-01T23:59:59.000Z

105

Mesoscale Convective Systems and Their Synoptic-scale Environment in Finland  

Science Journals Connector (OSTI)

The environments which high-latitude intense and non-intense mesoscale convective systems (iMCSs and niMCSs) and smaller thunderstorm clusters (subMCS) develop in were studied using proximity soundings. Eight-year MCS statistics were created by ...

ARI-JUHANI PUNKKA; MARJA BISTER

106

Propagation of Wind Energy into the Deep Ocean through a Fully Turbulent Mesoscale Eddy Field  

Science Journals Connector (OSTI)

The authors analyze the 3D propagation of wind-forced near-inertial motions in a fully turbulent mesoscale eddy field with a primitive equation numerical model. Although the wind stress is uniform, the near-inertial motion field quickly becomes ...

Eric Danioux; Patrice Klein; Pascal Rivière

2008-10-01T23:59:59.000Z

107

The evolution of total lightning and radar reflectivity characteristics of two mesoscale convective systems over Houston, Texas  

E-Print Network [OSTI]

Two mesoscale convective systems (MCSs) passed over the Houston Lightning Detection and Ranging (LDAR) network on 31 October 2005 and 21 April 2006. As the MCSs traverse the LDAR network, the systems slowly mature with a weakening convective line...

Hodapp, Charles Lee

2009-05-15T23:59:59.000Z

108

Evaluation of Ensemble Configurations for the Analysis and Prediction of Heavy-Rain-Producing Mesoscale Convective Systems  

Science Journals Connector (OSTI)

This study investigates probabilistic forecasts made using different convection-allowing ensemble configurations for a three-day period in June 2010 when numerous heavy-rain-producing mesoscale convective systems (MCSs) occurred in the United ...

Russ S. Schumacher; Adam J. Clark

2014-11-01T23:59:59.000Z

109

Resolved Turbulence Characteristics in Large-Eddy Simulations Nested within Mesoscale Simulations Using the Weather Research and Forecasting Model  

Science Journals Connector (OSTI)

One-way concurrent nesting within the Weather Research and Forecasting Model (WRF) is examined for conducting large-eddy simulations (LES) nested within mesoscale simulations. Wind speed, spectra, and resolved turbulent stresses and turbulence ...

Jeff Mirocha; Branko Kosovi?; Gokhan Kirkil

2014-02-01T23:59:59.000Z

110

A Statistical Analysis of Characteristics of Mesoscale Convective System Mountain Initiation Location Clusters in the Arkansas-Red River Basin  

E-Print Network [OSTI]

A Statistical Analysis of Characteristics of Mesoscale Convective System Mountain Initiation Location Clusters in the Arkansas-Red River Basin By Elisabeth F. Callen Submitted to the graduate degree program in Geography and the Graduate... ____________________________________ David Mechem Date Defended: November 9, 2012 ii The Thesis Committee for Elisabeth F. Callen certifies that this is the approved version of the following thesis: A Statistical Analysis of Characteristics of Mesoscale Convective...

Callen, Elisabeth F.

2012-12-31T23:59:59.000Z

111

Lagrangian study of transport and mixing in a mesoscale eddy street  

E-Print Network [OSTI]

We use dynamical systems approach and Lagrangian tools to study surface transport and mixing of water masses in a selected coastal region of the Japan Sea with moving mesoscale eddies associated with the Primorskoye Current. Lagrangian trajectories are computed for a large number of particles in an interpolated velocity field generated by a numerical regional multi-layer eddy-resolving circulation model. We compute finite-time Lyapunov exponents for a comparatively long period of time by the method developed and plot the Lyapunov synoptic map quantifying surface transport and mixing in that region. This map uncovers the striking flow structures along the coast with a mesoscale eddy street and repelling material lines. We propose new Lagrangian diagnostic tools --- the time of exit of particles off a selected box, the number of changes of the sign of zonal and meridional velocities --- to study transport and mixing by a pair of strongly interacting eddies often visible at sea-surface temperature satellite imag...

Prants, S V; Ponomarev, V I; Uleysky, M Yu; 10.1016/j.ocemod.2011.02.008

2012-01-01T23:59:59.000Z

112

An experimental and numerical investigation of premixed syngas combustion dynamics in mesoscale channels with controlled wall temperature profiles  

Science Journals Connector (OSTI)

Abstract The dynamics in H2/CO/O2/N2 premixed combustion was investigated experimentally and numerically in a 7-mm height mesoscale channel at atmospheric pressure, fuel–lean equivalence ratios 0.25–0.42, volumetric CO:H2 ratios 1:1 to 20:1, and wall temperatures 550–1320 K. Experiments were performed in an optically-accessible channel-flow reactor and involved high-speed (up to 1 kHz) planar laser induced fluorescence (LIF) of the OH radical and thermocouple measurements of the upper and lower channel wall temperatures. Simulations were carried out with a transient 2-D code, which included an elementary syngas reaction mechanism and detailed species transport. Demarcation of the experimentally-observed parameter space separating stationary and oscillatory combustion modes indicated that the former were favored at the higher wall temperatures and higher CO:H2 volumetric ratios, while the latter predominately appeared at the lower wall temperatures and lower CO:H2 ratios. The numerical model reproduced very well all stationary combustion modes, which included V-shaped and asymmetric (upper or lower) modes, in terms of flame shapes and flame anchoring positions. Simulations of the oscillatory flames, which appeared in the form of ignition/extinction events of varying spatial extents, were very sensitive to the specific boundary conditions and reproduced qualitatively the flame topology, the ignition sequence (including the periodic reversion from upper-asymmetric to lower-asymmetric flame propagation), and the range of measured oscillation frequencies. Predicted emissions in the stationary modes ranged from 25 to 94 ppm-mass for CO and from 0.1 to 0.3 ppm-mass for H2, while in the oscillatory modes incomplete combustion of both CO and H2 was attested during their oscillation period.

Andrea Brambilla; Marco Schultze; Christos E. Frouzakis; John Mantzaras; Rolf Bombach; Konstantinos Boulouchos

2014-01-01T23:59:59.000Z

113

An investigation of the rainfall distribution of a mesoscale network in Ecuador  

E-Print Network [OSTI]

provides a preliminary investigation of the mesoscale rainfall distribution of two geographical areas. The spatial distribution of rainfall at San Carlos, Ecuador, is compared with the spatial distribution at Riesel, Texas. This study is based upon..., 1964) at San Carlos and the daily rainfall of the 1960-1964 warm seasons (May through September) at Riesel. The isohyetal patterns and the depth-area relations show that rainfall often varies greatly over short dis- tances. A relationship exists...

Guest, Tommy Dean

2012-06-07T23:59:59.000Z

114

Mesoscale Variations of the Atmospheric Snow Line over the Northern Sierra Nevada: Multiyear Statistics, Case Study, and Mechanisms  

E-Print Network [OSTI]

Division, NOAA/ESRL, Boulder, Colorado (Manuscript received 6 July 2012, in final form 27 September 2012, New Haven, Connecticut DAVID E. KINGSMILL CIRES, University of Colorado, and Physical Sciences navigability, river runoff, freshwater resources, and hazards from landslides, av- alanches, and floods

Minder, Justin

115

Numerical Simulation of Micro?atmospheric Environment by LES in a District of Beijing  

Science Journals Connector (OSTI)

This paper investigates wind field and traffic pollutant dispersion at street level in a local urban area. A coupling method is employed between the mesoscale model weather research and forecast (WRF) for the atmospheric flow of whole city and the large eddy simulation (LES) method for local environmental flows. A combined model is proposed for building clusters in the urban area. The wind speed temperature and carbon monoxide concentration fields are computed from 9 am of October 26 2009 to 8 am of the next day in a district of Beijing and the results show a good agreement with the observation.

Y. S. Liu; S. G. Miao; C. L. Zhang; G. X. Cui; Z. S. Zhang

2011-01-01T23:59:59.000Z

116

Impact of Resolution on Simulation of Closed Mesoscale Cellular Convection Identified by Dynamically Guided Watershed Segmentation  

SciTech Connect (OSTI)

Organized mesoscale cellular convection (MCC) is a common feature of marine stratocumulus that forms in response to a balance between mesoscale dynamics and smaller scale processes such as cloud radiative cooling and microphysics. We use the Weather Research and Forecasting model with chemistry (WRF-Chem) and fully coupled cloud-aerosol interactions to simulate marine low clouds during the VOCALS-REx campaign over the southeast Pacific. A suite of experiments with 3- and 9-km grid spacing indicates resolution-dependent behavior. The simulations with finer grid spacing have smaller liquid water paths and cloud fractions, while cloud tops are higher. The observed diurnal cycle is reasonably well simulated. To isolate organized MCC characteristics we develop a new automated method, which uses a variation of the watershed segmentation technique that combines the detection of cloud boundaries with a test for coincident vertical velocity characteristics. This ensures that the detected cloud fields are dynamically consistent for closed MCC, the most common MCC type over the VOCALS-REx region. We demonstrate that the 3-km simulation is able to reproduce the scaling between horizontal cell size and boundary layer height seen in satellite observations. However, the 9-km simulation is unable to resolve smaller circulations corresponding to shallower boundary layers, instead producing invariant MCC horizontal scale for all simulated boundary layers depths. The results imply that climate models with grid spacing of roughly 3 km or smaller may be needed to properly simulate the MCC structure in the marine stratocumulus regions.

Martini, Matus; Gustafson, William I.; Yang, Qing; Xiao, Heng

2014-11-27T23:59:59.000Z

117

Sensitivity of Mesoscale Gravity Waves to the Baroclinicity of Jet-Front Systems SHUGUANG WANG AND FUQING ZHANG  

E-Print Network [OSTI]

life cycles of baroclinic waves with a high-resolution mesoscale model. Four simulations are made starting from two-dimensional baroclinic jets having different static stability and wind shear in order-dimensional spectral analysis demonstrates that these gravity waves have multiple components with different wave

118

Four-Dimensional Assimilation of Multitime Wind Profiles over a Single Station and Numerical Simulation of a Mesoscale Convective  

E-Print Network [OSTI]

on the numerical simulation of the convective initiation and evolution. Besides the wind fields, the structureFour-Dimensional Assimilation of Multitime Wind Profiles over a Single Station and Numerical Simulation of a Mesoscale Convective System Observed during IHOP_2002 LEI ZHANG AND ZHAOXIA PU Department

Pu, Zhaoxia

119

The Surface Expression of Semidiurnal Internal Tides near a Strong Source at Hawaii. Part II: Interactions with Mesoscale Currents*  

E-Print Network [OSTI]

: the cyclone causes the energy of internal tide rays propagating through its core to increase near the surface with astronomical forcing because of the presence of mesoscale variability. Internal tide energy is mainly affected but not negligible role, inducing energy transfers between the internal tides and background currents. Furthermore

120

Ensemble Kalman Filter Analyses and Forecasts of a Severe Mesoscale Convective System Using Different Choices of Microphysics Schemes  

Science Journals Connector (OSTI)

A Weather Research and Forecasting Model (WRF)-based ensemble data assimilation system is used to produce storm-scale analyses and forecasts of the 4–5 July 2003 severe mesoscale convective system (MCS) over Indiana and Ohio, which produced ...

Dustan M. Wheatley; Nusrat Yussouf; David J. Stensrud

2014-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Tests of an Ensemble Kalman Filter for Mesoscale and Regional-Scale Data Assimilation. Part II: Imperfect Model Experiments  

E-Print Network [OSTI]

degraded). As in Part I, where the perfect model assumption was utilized, most analysis error reduction of significant model errors due to physical parameterizations by assimilating synthetic sounding and surfaceTests of an Ensemble Kalman Filter for Mesoscale and Regional-Scale Data Assimilation. Part II

Meng, Zhiyong

122

Mesoscale Self-Assembly: Capillary Bonds and Negative Menisci Ned Bowden, Scott R. J. Oliver, and George M. Whitesides*  

E-Print Network [OSTI]

Mesoscale Self-Assembly: Capillary Bonds and Negative Menisci Ned Bowden, Scott R. J. Oliver., Cambridge, Massachusetts 02138 ReceiVed: September 2, 1999 This paper describes the self-assembly) that examined the self-assembly of hexagonal plates of PDMS (F ) 1.05 g/cm3) that had a density close

Prentiss, Mara

123

October 1986 R. H. Johnson 721 Lower-Tropospheric Warming and Drying in Tropical Mesoscale Convective Systems  

E-Print Network [OSTI]

October 1986 R. H. Johnson 721 Lower-Tropospheric Warming and Drying in Tropical Mesoscale Convective Systems: Implications for the Problem of Cumulus Parameterization By Richard H. Johnson Department beneath the stratiform com- ponents of these systems (Houze, 1977; Zipser, 1977; Johnson and Kriete, 1982

Johnson, Richard H.

124

Simulating atmosphere flow for wind energy applications with WRF-LES  

SciTech Connect (OSTI)

Forecasts of available wind energy resources at high spatial resolution enable users to site wind turbines in optimal locations, to forecast available resources for integration into power grids, to schedule maintenance on wind energy facilities, and to define design criteria for next-generation turbines. This array of research needs implies that an appropriate forecasting tool must be able to account for mesoscale processes like frontal passages, surface-atmosphere interactions inducing local-scale circulations, and the microscale effects of atmospheric stability such as breaking Kelvin-Helmholtz billows. This range of scales and processes demands a mesoscale model with large-eddy simulation (LES) capabilities which can also account for varying atmospheric stability. Numerical weather prediction models, such as the Weather and Research Forecasting model (WRF), excel at predicting synoptic and mesoscale phenomena. With grid spacings of less than 1 km (as is often required for wind energy applications), however, the limits of WRF's subfilter scale (SFS) turbulence parameterizations are exposed, and fundamental problems arise, associated with modeling the scales of motion between those which LES can represent and those for which large-scale PBL parameterizations apply. To address these issues, we have implemented significant modifications to the ARW core of the Weather Research and Forecasting model, including the Nonlinear Backscatter model with Anisotropy (NBA) SFS model following Kosovic (1997) and an explicit filtering and reconstruction technique to compute the Resolvable Subfilter-Scale (RSFS) stresses (following Chow et al, 2005).We are also modifying WRF's terrain-following coordinate system by implementing an immersed boundary method (IBM) approach to account for the effects of complex terrain. Companion papers presenting idealized simulations with NBA-RSFS-WRF (Mirocha et al.) and IBM-WRF (K. A. Lundquist et al.) are also presented. Observations of flow through the Altamont Pass (Northern California) wind farm are available for validation of the WRF modeling tool for wind energy applications. In this presentation, we use these data to evaluate simulations using the NBA-RSFS-WRF tool in multiple configurations. We vary nesting capabilities, multiple levels of RSFS reconstruction, SFS turbulence models (the new NBA turbulence model versus existing WRF SFS turbulence models) to illustrate the capabilities of the modeling tool and to prioritize recommendations for operational uses. Nested simulations which capture both significant mesoscale processes as well as local-scale stable boundary layer effects are required to effectively predict available wind resources at turbine height.

Lundquist, J K; Mirocha, J D; Chow, F K; Kosovic, B; Lundquist, K A

2008-01-14T23:59:59.000Z

125

Steven Staab University of Karlsruhe  

E-Print Network [OSTI]

with the reality of negative numbers, subatomic particles, or the vital force, so have theologians and mystics grappled with the reality of God and inner spiritual experiences. The nature of knowledge is an abiding

Franconi, Enrico

126

Cloud shading retrieval and assimilation in a satellite-model coupled mesoscale analysis system  

SciTech Connect (OSTI)

A retrieval-assimilation method has been developed as a quantitative means to exploit the information in satellite imagery regarding shading of the ground by clouds, as applied to mesoscale weather analysis. Cloud radiative parameters are retrieved from satellite visible image data and used, along with parameters computed by a numerical model, to control the model's computation of downward radiative fluxes at the ground. These fluxes influence the analysis of ground surface temperatures under clouds. The method is part of a satellite-model coupled four-dimensional analysis system that merges information from visible image data in cloudy areas with infrared sounder data in clear areas, where retrievals of surface temperatures and water vapor concentrations are assimilated. The substantial impact of shading on boundary-layer development and mesoscale circulations was demonstrated in simulations, and the value of assimilating shading retrievals was demonstrated with a case study and with a simulated analysis that included the effects of several potential sources of error. The case study was performed in the northwestern Texas area, where convective cloud development was influenced by the shading effects of a persistent region of stratiform cloud cover. Analyses that included shading retrieval assimilation had consistently smaller shelter-height temperature errors than analyses without shading retrievals. When clear-area surface temperature retrievals from sounder data were analyzed along with cloudy-area shading retrievals, the contrast in heating between the shaded and clear parts of the domain led to large variations in analyzed boundary-layer depths and had a modest impact on analyzed wind flow. The analyzed locations of upward vertical motion corresponded roughly to areas of convective cloud development observed in satellite imagery. 29 refs., 17 figs., 2 tabs.

Lipton, A.E. (Phillips Lab., Hanscom AFB, MA (United States))

1993-11-01T23:59:59.000Z

127

Diffractive imaging at large Fresnel number: Challenge of dynamic mesoscale imaging with hard x rays  

Science Journals Connector (OSTI)

Real materials have structure at both the atomic or crystalline scale as well as at interfaces and defects at the larger scale of grains. There is a need for the study of materials at the “mesoscale,” the scale at which subgranular physical processes and intergranular organization couple to determine microstructure, crucially impacting constitutive response at the engineering macroscale. Diffractive imaging using photons that can penetrate multiple grains of material would be a transformative technique for the study of the performance of materials in dynamic extremes. Thicker samples imply higher energy photons of shorter wavelength, and imaging of multiple grains implies bigger spot sizes. Such imaging requires the use of future planned and proposed hard x-ray free electron lasers (such as the European XFEL) to provide both the spatial coherence transverse to the large spots and the peak brilliance to provide the short illumination times. The result is that the Fresnel number of the system becomes large and is no longer in the Fraunhofer far-field limit. The interrelated issues of diffractive imaging at large Fresnel number are analyzed, including proof that diffractive imaging is possible in this limit and estimates of the signal-to-noise possible. In addition, derivation of the heating rates for brilliant pulses of x rays are presented. The potential and limitations on multiple dynamic images are derived. This paper will present a study of x-ray interactions with materials in this new regime of spatially coherent but relatively large mesoscale spots at very hard energies. It should provide the theory and design background for the experiments and facilities required to control materials in extreme environments, in particular for the next generation of very-hard-x-ray free electron lasers.

John L. Barber; Cris W. Barnes; Richard L. Sandberg; Richard L. Sheffield

2014-05-12T23:59:59.000Z

128

Sensitivity of the Simulated Distributions of Water Masses, CFCs, and Bomb 14C to Parameterizations of Mesoscale Tracer Transports in a Model of the North Pacific  

Science Journals Connector (OSTI)

A basinwide ocean general circulation model of the North Pacific Ocean is used to study the sensitivity of the simulated distributions of water masses, chlorofluorocarbons (CFCs), and bomb carbon-14 isotope (14C) to parameterizations of mesoscale ...

Yongfu Xu; Shigeaki Aoki; Koh Harada

2006-03-01T23:59:59.000Z

129

Improving an Accuracy of ANN-Based Mesoscale-Microscale Coupling Model by Data Categorization: With Application to Wind Forecast for Offshore and Complex Terrain Onshore Wind Farms  

Science Journals Connector (OSTI)

The ANN-based mesoscale-microscale coupling model forecasts wind speed and wind direction with high accuracy for wind parks located in complex terrain onshore, yet some weather regimes remains unresolved and f...

Alla Sapronova; Catherine Meissner…

2014-01-01T23:59:59.000Z

130

Atmospheric Transport of Radionuclides  

SciTech Connect (OSTI)

The purpose of atmospheric transport and diffusion calculations is to provide estimates of concentration and surface deposition from routine and accidental releases of pollutants to the atmosphere. This paper discusses this topic.

Crawford, T.V.

2003-03-03T23:59:59.000Z

131

The Boulder Atmospheric Observatory  

Science Journals Connector (OSTI)

The Boulder Atmospheric Observatory (BAO) is a unique research facility for studying the planetary boundary layer and for testing and calibrating atmospheric sensors. The facility includes a 300 m tower instrumented with fast- and slow-response ...

J. C. Kaimal; J. E. Gaynor

1983-05-01T23:59:59.000Z

132

8, 10691088, 2008 Atmospheric  

E-Print Network [OSTI]

into the atmosphere (Molina et al., 1974; Farman et al., 1985) has led to an interna- tional effort to replace

Boyer, Edmond

133

The Upper Atmosphere Observatory  

Science Journals Connector (OSTI)

...with *the plasma frethe progress...explorcreated an even larger number of...the upper atmosphere and ionosphere...the upper atmosphere. For this...ionospheric plasma motion simul-taneously...field is large, the horizontal...resolved. The atmospheric gravity waves...simul-taneously at a large number of...two regions plasma drifts separated...

J. V. Evans

1972-05-05T23:59:59.000Z

134

The Upper Atmosphere Observatory  

Science Journals Connector (OSTI)

...DATA, JOURNAL OF ATMOSPHERIC AND TERRESTRIAL...IN NEAR-EARTH PLASMA, SPACE SCIENCE...INVESTIGATION OF WHISTLING ATMOSPHERICS, PHILOSOPHICAL...TRANSPOLAR EXOSPHERIC PLASMA .1. PLASMASPHERE...dynamics of the upper atmosphere. For this purpose...the ionospheric plasma motion simul-taneously...

J. V. Evans

1972-05-05T23:59:59.000Z

135

5, 60416076, 2005 Atmospheric  

E-Print Network [OSTI]

opportunity to examine atmospheric oxidation in a megacity that has more pollution than typical USACPD 5, 6041­6076, 2005 Atmospheric oxidation in the Mexico City Metropolitan Area T. R. Shirley et.atmos-chem-phys.org/acpd/5/6041/ SRef-ID: 1680-7375/acpd/2005-5-6041 European Geosciences Union Atmospheric Chemistry

Boyer, Edmond

136

NOAA federal/state cooperative program in atmospheric modification research. Collected publication titles and abstracts. Technical memo  

SciTech Connect (OSTI)

The volume contains the titles and abstracts of technical publications through fiscal year 1992 that are the products of the NOAA Federal/State Cooperative Program in Atmospheric Modification Research. The program is focused on the very interdisciplinary science of purposeful cloud modification for precipitation enhancement and hail suppression, and unintentional modification of clouds and precipitation. The audience includes, for example, water managers, policy makers, scientists, practitioners in the field, and the interested public. Listed are publications on topics including but not limited to: cloud and precipitation processes, numerical cloud and atmospheric mesoscale modeling, atmospheric and storm monitoring instrumentation and technologies, aerosol transport and dispersion in clouds and over complex terrain, cloud seeding technologies and effects, agricultural responses to cloud modification, weather economics and societal aspects of cloud modification, unintentional weather and climate modification, and precipitation and hydrological assessment and forecasting.

Reinking, R.F.

1993-04-01T23:59:59.000Z

137

A soil moisture assimilation scheme using satellite-retrieved skin temperature in meso-scale weather forecast model  

Science Journals Connector (OSTI)

A thermodynamically consistent soil moisture assimilation scheme for clear sky and snow free conditions has been developed for the meso-scale modeling system in the Arctic region by using satellite-derived skin temperatures. Parallel control and sensitivity modeling experiments were designed and their results demonstrated that the assimilation scheme successfully improves the soil moistures that were deliberately perturbed initially, indicating capability of the scheme to correct bias in the soil moisture initialization. Moreover, the resultant benefit of this assimilation scheme does not only lie in the improvement of soil moisture; the skin temperature also consequently exhibits improvements in a thermodynamic consistency. A real application of the assimilation scheme with satellite-retrieved skin temperature exhibited noticeable positive impacts on the modeling simulation and weather forecast; the model obviously captured meso-scale features of soil moistures as well as the skin temperatures. The warming tendency bias in original model simulations was removed to a considerable extent by this assimilation scheme.

Jing Zhang; Xiangdong Zhang

2010-01-01T23:59:59.000Z

138

Probabilistic Evaluation of the Dynamics and Predictability of the Mesoscale Convective Vortex of 1013 June 2003  

E-Print Network [OSTI]

National Center for Atmospheric Research,* Boulder, Colorado (Manuscript received 14 September 2005 have been linked to extreme rainfall events, such as the Johnstown, Pennsylvania, flood of 1977 (Bosart

Meng, Zhiyong

139

AtmosphericAtmospheric Composition Introduction The division investigates the atmospheric  

E-Print Network [OSTI]

development on observation side was the installation of an ozone observation station in Surinam in close co-operation with the Surinam Meteorological Service. Processes in the tropical regions are important for the global climate and the global atmospheric composition. The participation in Indoex (Indian Ocean Experiment) and this Surinam

Haak, Hein

140

The reduction of plankton biomass induced by mesoscale stirring: a modeling study in the Benguela upwelling  

E-Print Network [OSTI]

Recent studies, both based on remote sensed data and coupled models, showed a reduction of biological productivity due to vigorous horizontal stirring in upwelling areas. In order to better understand this phenomenon, we consider a system of oceanic flow from the Benguela area coupled with a simple biogeochemical model of Nutrient-Phyto-Zooplankton (NPZ) type. For the flow three different surface velocity fields are considered: one derived from satellite altimetry data, and the other two from a regional numerical model at two different spatial resolutions. We compute horizontal particle dispersion in terms of Lyapunov Exponents, and analyzed their correlations with phytoplankton concentrations. Our modelling approach confirms that in the south Benguela there is a reduction of biological activity when stirring is increased. Two-dimensional offshore advection and latitudinal difference in Primary Production, also mediated by the flow, seem to be the dominant processes involved. We estimate that mesoscale processes are responsible for 30 to 50% of the offshore fluxes of biological tracers. In the northern area, other factors not taken into account in our simulation are influencing the ecosystem. We suggest explanations for these results in the context of studies performed in other eastern boundary upwelling areas.

Ismael Hernández-Carrasco; Vincent Rossi; Emilio Hernández-García; Veronique Garçon; Cristóbal López

2013-11-05T23:59:59.000Z

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Equilibrium Structure of a Triblock Copolymer System Revealed by Mesoscale Simulation and Neutron Scattering  

SciTech Connect (OSTI)

We have performed both mesoscale simulations and neutron scattering experiments on Pluronic L62, a poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymer system in aqueous solution. The influence of simulation variables such PEO/PPO block ratio, interaction parameters, and coarse-graining methods is extensively investigated by covering all permutations of parameters found in the literatures. Upon increasing the polymer weight fraction from 50 wt% to 90 wt%, the equilibrium structure of the isotropic, reverse micellar, bicontinuous, worm-like micelle network, and lamellar phases are respectively predicted from the simulation depending on the choices of simulation parameters. Small angle neutron scattering (SANS) measurements show that the same polymer systems exhibit the spherical micellar, lamellar, and reverse micellar phases with the increase of the copolymer concentration at room temperature. Detailed structural analysis and comparison with simulations suggest that one of the simulation parameter sets can provide reasonable agreement with the experimentally observed structures.

Do, Changwoo [ORNL] [ORNL; Chen, Wei-Ren [ORNL] [ORNL; Hong, Kunlun [ORNL] [ORNL; Smith, Gregory Scott [ORNL] [ORNL

2013-01-01T23:59:59.000Z

142

Impact of mesoscale eddies on water transport between the Pacific Ocean and the Bering Sea  

E-Print Network [OSTI]

Sea surface height anomalies observed by satellites in 1993--2012 are combined with simulation and observations by surface drifters and Argo floats to study water flow pattern in the Near Strait (NS) connected the Pacific Ocean with the Bering Sea. Daily Lagrangian latitudinal maps, computed with the AVISO surface velocity field, and calculation of the transport across the strait show that the flow through the NS is highly variable and controlled by mesoscale and submesoscale eddies in the area. On the seasonal scale, the flux through the western part of the NR is negatively correlated with the flux through its eastern part ($r=-0.93$). On the interannual time scale, a significant positive correlation ($r=0.72$) is diagnosed between the NS transport and the wind stress in winter. Increased southward component of the wind stress decreases the northward water transport through the strait. Positive wind stress curl over the strait area in winter--spring generates the cyclonic circulation and thereby enhances the...

Prants, S V; Budyansky, M V; Uleysky, M Yu

2013-01-01T23:59:59.000Z

143

Atmospheric Radiation Measurement Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

3 3 ARM 2003 Tom Ackerman Chief Scientist Tom Ackerman Chief Scientist ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement WARNING! WARNING! Today is April 1 But that has NO bearing on this message Today is April 1 But that has NO bearing on this message ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Two Topics Two Topics * Status of ARM (quick overview) * Science plan - ARM in the next 5 years * Status of ARM (quick overview) * Science plan - ARM in the next 5 years ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement ARM Status - Science ARM Status - Science * Steadily increasing productivity - Poster session - over 220 posters (may need to do something about submissions next year) - Peer-reviewed articles: 2.5 to 3 per year per

144

Atmospheric Neutrino Fluxes  

E-Print Network [OSTI]

Starting with an historical review, I summarize the status of calculations of the flux of atmospheric neutrinos and how they compare to measurements.

Thomas K. Gaisser

2005-02-18T23:59:59.000Z

145

ARM - Atmospheric Heat Budget  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ListAtmospheric Heat Budget Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About...

146

Observational Analysis of the Predictability of Mesoscale Convective Systems ISRAEL L. JIRAK AND WILLIAM R. COTTON  

E-Print Network [OSTI]

AND WILLIAM R. COTTON Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado merge into a large, long-lived organized convective system (Cotton and Anthes 1989). Thus, forecasting

147

Coupling the High Complexity Land Surface Model ACASA to the Mesoscale Model WRF  

E-Print Network [OSTI]

In this study, the Weather Research and Forecasting Model (WRF) is coupled with the Advanced Canopy-Atmosphere-Soil Algorithm (ACASA), a high complexity land surface model. Although WRF is a state-of-the-art regional ...

Xu, L.

148

Conference on Atmospheric Pollution  

Science Journals Connector (OSTI)

... THE half-yearly Conference of representatives of local authorities and other organisations co-operating with the Department of Scientific ... of atmospheric pollution was held in the offices of the Department on May 25. The Conference received from Dr. G. M. B. Dobson, chairman of the Atmospheric Pollution ...

1936-05-30T23:59:59.000Z

149

Atmospheric Pollution Research 1 (2010) 220228 Atmospheric Pollution Research  

E-Print Network [OSTI]

Atmospheric Pollution Research 1 (2010) 220228 Atmospheric Pollution Research www in modeling of the associated multiphase processes. Iron redox species are important pollutants. The oxidative capacity of the atmospheric cloud water decreases when dissolution is included

Boyer, Edmond

150

Mesoscale Simulations of a Wind Ramping Event for Wind Energy Prediction  

SciTech Connect (OSTI)

Ramping events, or rapid changes of wind speed and wind direction over a short period of time, present challenges to power grid operators in regions with significant penetrations of wind energy in the power grid portfolio. Improved predictions of wind power availability require adequate predictions of the timing of ramping events. For the ramping event investigated here, the Weather Research and Forecasting (WRF) model was run at three horizontal resolutions in 'mesoscale' mode: 8100m, 2700m, and 900m. Two Planetary Boundary Layer (PBL) schemes, the Yonsei University (YSU) and Mellor-Yamada-Janjic (MYJ) schemes, were run at each resolution as well. Simulations were not 'tuned' with nuanced choices of vertical resolution or tuning parameters so that these simulations may be considered 'out-of-the-box' tests of a numerical weather prediction code. Simulations are compared with sodar observations during a wind ramping event at a 'West Coast North America' wind farm. Despite differences in the boundary-layer schemes, no significant differences were observed in the abilities of the schemes to capture the timing of the ramping event. As collaborators have identified, the boundary conditions of these simulations probably dominate the physics of the simulations. They suggest that future investigations into characterization of ramping events employ ensembles of simulations, and that the ensembles include variations of boundary conditions. Furthermore, the failure of these simulations to capture not only the timing of the ramping event but the shape of the wind profile during the ramping event (regardless of its timing) indicates that the set-up and execution of such simulations for wind power forecasting requires skill and tuning of the simulations for a specific site.

Rhodes, M; Lundquist, J K

2011-09-21T23:59:59.000Z

151

On the effect of the steady-state approximation in time-space composite studies of mesoscale convective systems  

E-Print Network [OSTI]

ON THE EFFECT OF THE STRA 'Y-STATE APPROXIMATION IN TIME-SPACE COMPOSITE STUDIES OF MESOSCALE CONVECTIVE SYSTEMS A Thesis KEVIN MORGAN MATTISON Subnitted to the Office of Graduate Studies of Texas A&M University in partial fulfillnent... of the requirements for the degree of MASTER OF SCIENCE Decenber 1992 Major Subject: Meteorology ON THE EFFECT OF THE STEADY-STATE APPROXINATIOH IN TIME-SPACE COMPOSITE STUDIES OF NESOSCALE COHVECTIVE SYSTENS A Thesis KEVIN MORGAN NATTISOH Approved as to style...

Mattison, Kevin Morgan

2012-06-07T23:59:59.000Z

152

Atmospheric Physics and Earth Observations  

Science Journals Connector (OSTI)

...has been used by atmospheric modelers as a vertical...Ackerman, in Atmospheric Physics from Spacelab...shut-tle allows recovery of the film, we...dry nitrogen at atmospheric pressure. To avoid water condensation on the optical...

M. HERSÉ

1984-07-13T23:59:59.000Z

153

Mesoscale Surface Pressure and Temperature Features Associated with Bow Echoes REBECCA D. ADAMS-SELIN AND RICHARD H. JOHNSON  

E-Print Network [OSTI]

-SELIN AND RICHARD H. JOHNSON Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado

Johnson, Richard H.

154

Mesoscale Eddy Energy Locality in an Idealized Ocean Model IAN GROOMS, LOUIS-PHILIPPE NADEAU, AND K. SHAFER SMITH  

E-Print Network [OSTI]

. SHAFER SMITH Center for Atmosphere Ocean Science, Courant Institute of Mathematical Sciences, New York

Smith, K. Shafer

155

Nature: Earth's Atmosphere and Beyond  

Science Journals Connector (OSTI)

Nature: Earth's Atmosphere and Beyond ... The column summarizes research articles from Nature that report on anthropogenic activities and natural phenomena that influence the chemical composition of Earth's atmosphere. ...

Sabine Heinhorst; Gordon Cannon

2003-10-01T23:59:59.000Z

156

The atmosphere of Venus  

Science Journals Connector (OSTI)

The investigations of Venus take a special position in planetary researches. It was just the atmosphere of Venus where first measurements in situ were carried out by means of the equipment delivered by a space pr...

V. I. Moroz

1981-01-01T23:59:59.000Z

157

Atmospheric Dynamics of Exoplanets  

E-Print Network [OSTI]

The characterization of exoplanetary atmospheres has come of age in the last decade, as astronomical techniques now allow for albedos, chemical abundances, temperature profiles and maps, rotation periods and even wind speeds to be measured. Atmospheric dynamics sets the background state of density, temperature and velocity that determines or influences the spectral and temporal appearance of an exoplanetary atmosphere. Hot exoplanets are most amenable to these characterization techniques; in the present review, we focus on highly-irradiated, large exoplanets (the "hot Jupiters"), as astronomical data begin to confront theoretical questions. We summarize the basic atmospheric quantities inferred from the astronomical observations. We review the state of the art by addressing a series of current questions and look towards the future by considering a separate set of exploratory questions. Attaining the next level of understanding will require a concerted effort of constructing multi-faceted, multi-wavelength dat...

Heng, Kevin

2014-01-01T23:59:59.000Z

158

The kinematic and cloud-to-ground lightning structure of the 9-10, June 1998 Red River Mesoscale Convective System  

E-Print Network [OSTI]

An investigation of the kinematic and electrical properties of the 9-10 June, 1998 Red River Mesoscale Convective System (MCS), as observed by the NOAA P3 Tail Radar and the National Lightning Detection Network, is presented. This system exhibits...

Santarpia, Joshua

2012-06-07T23:59:59.000Z

159

Article Atmospheric Science  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

© The Author(s) 2012. This article is published with open access at Springerlink.com csb.scichina.com www.springer.com/scp © The Author(s) 2012. This article is published with open access at Springerlink.com csb.scichina.com www.springer.com/scp *Corresponding author (email: luchunsong110@gmail.com) Article Atmospheric Science February 2013 Vol.58 No.4-5: 545  551 doi: 10.1007/s11434-012-5556-6 A method for distinguishing and linking turbulent entrainment mixing and collision-coalescence in stratocumulus clouds LU ChunSong 1,2* , LIU YanGang 2 & NIU ShengJie 1 1 Key Laboratory for Atmospheric Physics and Environment of China Meteorological Administration, Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China; 2 Atmospheric Sciences Division, Brookhaven National Laboratory, New York 11973, USA

160

ARM - Measurement - Atmospheric moisture  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

moisture moisture ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric moisture The moisture content of the air as indicated by several measurements including relative humidity, specific humidity, dewpoint, vapor pressure, water vapor mixing ratio, and water vapor density; note that precipitable water is a separate type. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

BNL | Atmospheric Systems Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric System Research is a DOE observation-based research program Atmospheric System Research is a DOE observation-based research program created to advance process-level understanding of the key interactions among aerosols, clouds, precipitation, radiation, dynamics, and thermodynamics, with the ultimate goal of reducing the uncertainty in global and regional climate simulations and projections. General areas of research at BNL under this program include studies of aerosol and cloud lifecycles, and cloud-aerosol-precipitation interactions. Contact Robert McGraw, 631.344.3086 aerosols Aerosol Life Cycle The strategic focus of the Aerosol Life Cycle research is observation-based process science-examining the properties and evolution of atmospheric aerosols. Observations come from both long-term studies conducted by the

162

ARM - Measurement - Atmospheric pressure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

pressure pressure ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric pressure The pressure exerted by the atmosphere as a consequence of gravitational attraction exerted upon the "column" of air lying directly above the point in question. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

163

ARM - Measurement - Atmospheric temperature  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

temperature temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric temperature The temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

164

Atmospheres of Brown Dwarfs  

E-Print Network [OSTI]

Brown Dwarfs are the coolest class of stellar objects known to date. Our present perception is that Brown Dwarfs follow the principles of star formation, and that Brown Dwarfs share many characteristics with planets. Being the darkest and lowest mass stars known makes Brown Dwarfs also the coolest stars known. This has profound implication for their spectral fingerprints. Brown Dwarfs cover a range of effective temperatures which cause brown dwarfs atmospheres to be a sequence that gradually changes from a M-dwarf-like spectrum into a planet-like spectrum. This further implies that below an effective temperature of atmospheres of objects marking the boundary between M-Dwarfs and brown dwarfs. Recent developments have sparked the interest in plasma processes in such very cool atmospheres: sporadic and quiescent radio emission has been observed in combination with decaying Xray-activity indicators across the fully convective boundary.

Helling, Christiane

2014-01-01T23:59:59.000Z

165

Dynamics of Planetary Atmospheres  

E-Print Network [OSTI]

pressure (bars) N2 82%; Ar 12%; CH4 6%CO2 96.5%; N2 3.5%Atmospheric composition 26177Orbital inclination (1992) orbiter ­ Winds from cloud-tracking and probe drifts ­ IR temperatures, solar-fixed tides, polar-Huygens mission (from 2005) ­ Doppler wind descent profile ­ IR temperature and composition maps ­ Visible, IR

Read, Peter L.

166

Controllable Organization of Quantum Dots into Mesoscale Wires and Cables via Interfacial Block Copolymer Self-Assembly  

Science Journals Connector (OSTI)

Controllable Organization of Quantum Dots into Mesoscale Wires and Cables via Interfacial Block Copolymer Self-Assembly ... Figure 2b,c shows higher magnification AFM images of interesting features within the branched cable network, including a typical branch point (b) and a QD/polymer ring incorporated into the cable (c). ... It was noted that several of the LB films containing ring/cable structures also contained small planar aggregates along the length of the cables where an elevated rim was present at the edge of a relatively flat surface, similar to a continent as described by Devereaux et al.26 It appears that these flat surfaces tend to rupture by formation of a single central hole in a secondary dewetting process, followed by the radial growth of the hole. ...

Robert B. Cheyne; Matthew G. Moffitt

2007-02-23T23:59:59.000Z

167

Soil moisture in complex terrain: quantifying effects on atmospheric boundary layer flow and providing improved surface boundary conditions for mesoscale models  

E-Print Network [OSTI]

compressible numerical weather prediction model incompressible numerical weather prediction model withcompressible numerical weather prediction model in

Daniels, Megan Hanako

2010-01-01T23:59:59.000Z

168

Formation of Meso-Scale Roughening in 6022-T4 Al Sheets Deformed in Plane-Strain Tension  

E-Print Network [OSTI]

Meso-scale surface roughening evolution in 6022-T4 Al sheets was investigated using plane-strain tension. Formation of grain-scale hills and valleys and their relation to the morphologies and corresponding orientations of surface grains after deformation were examined experimentally. These observations were analyzed using various approaches based on the Schmid and Taylor crystal plasticity models. It was observed that surface grains with and without slip bands tend to form valleys and hills, respectively, wherever these two types of grains are adjacent to each other along the planestrain tension direction. When the sample was pulled along the transverse direction, the formation of hills and valleys by unbanded and banded grains was more lineally organized in the plane-strain (rolling) direction than in the sample which was pulled along the rolling direction. Slip banding and valley formation were principally observed in the surface grains with either very few (1?2) slip systems of high Schmid factors or low Taylor factors, in contrast to non slip-banded and hillforming surface grains. Quantitative analysis using correlation coefficients showed that the Schmid factor provided slightly better agreement than the Taylor factor in predicting slip-banding (and valley-forming) and non slip-banding (and hill-forming) behaviors of surface grains. In addition, measures that quantify the image qualities of EBSPs for selected surface grains suggested that the slip-banded and valley-forming grains contain less lattice distortion than the non slip-banded and Currently at Department of Civil and Environmental Engineering, Carnegie Mellon University, PAhill-forming grains despite the larger strains experienced by these grains. This indicates that dislocations in the slip-banded grains move out of the surface to create deformation without lattice distortion. Plastic interactions between specific neighboring grains are central to the formation of meso-scale surface roughening. 1.

unknown authors

169

ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

An Integrated Column Description An Integrated Column Description of the Atmosphere An Integrated Column Description of the Atmosphere Tom Ackerman Chief Scientist Tom Ackerman Chief Scientist ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Pacific Northwest National Laboratory Pacific Northwest National Laboratory The "other" Washington ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Credits to Credits to * Ric Cederwall * Xiquan Dong * Chuck Long * Jay Mace * Mark Miller * Robin Perez * Dave Turner and the rest of the ARM science team * Ric Cederwall * Xiquan Dong * Chuck Long * Jay Mace * Mark Miller * Robin Perez * Dave Turner and the rest of the ARM science team ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Outline Outline * A little philosophy

170

ATMOSPHERIC ELSEVIER AtmosphericResearch40 (1996) 223-259  

E-Print Network [OSTI]

of atmospheric aerosol particles and cloud hydrometeors (water drops, ice particles, and, particularlyATMOSPHERIC RESEARCH ELSEVIER AtmosphericResearch40 (1996) 223-259 Simulations of drop fall turbulence. The model permits us to generate different realizations of the random velocity field component

Mark, Pinsky

171

North Pacific Mesoscale Coupled Air-Ocean Simulations Compared with Observations  

SciTech Connect (OSTI)

Executive summary The main objective of the study was to investigate atmospheric and ocean interaction processes in the western Pacific and, in particular, effects of significant ocean heat loss in the Kuroshio and Kuroshio Extension regions on the lower and upper atmosphere. It is yet to be determined how significant are these processes are on climate scales. The understanding of these processes led us also to development of the methodology of coupling the Weather and Research Forecasting model with the Parallel Ocean Program model for western Pacific regional weather and climate simulations. We tested NCAR-developed research software Coupler 7 for coupling of the WRF and POP models and assessed its usability for regional-scale applications. We completed test simulations using the Coupler 7 framework, but implemented a standard WRF model code with options for both one- and two-way mode coupling. This type of coupling will allow us to seamlessly incorporate new WRF updates and versions in the future. We also performed a long-term WRF simulation (15 years) covering the entire North Pacific as well as high-resolution simulations of a case study which included extreme ocean heat losses in the Kuroshio and Kuroshio Extension regions. Since the extreme ocean heat loss occurs during winter cold air outbreaks (CAO), we simulated and analyzed a case study of a severe CAO event in January 2000 in detail. We found that the ocean heat loss induced by CAOs is amplified by additional advection from mesocyclones forming on the southern part of the Japan Sea. Large scale synoptic patterns with anomalously strong anticyclone over Siberia and Mongolia, deep Aleutian Low, and the Pacific subtropical ridge are a crucial setup for the CAO. It was found that the onset of the CAO is related to the breaking of atmospheric Rossby waves and vertical transport of vorticity that facilitates meridional advection. The study also indicates that intrinsic parameterization of the surface fluxes within the WRF model needs more evaluation and analysis.

Koracin, Darko; Cerovecki, Ivana; Vellore, Ramesh; Mejia, John; Hatchett, Benjamin; McCord, Travis; McLean, Julie; Dorman, Clive

2013-04-11T23:59:59.000Z

172

MESOI Version 2. 0: an interactive mesoscale Lagrangian puff dispersion model with deposition and decay  

SciTech Connect (OSTI)

MESOI Version 2.0 is an interactive Lagrangian puff model for estimating the transport, diffusion, deposition and decay of effluents released to the atmosphere. The model is capable of treating simultaneous releases from as many as four release points, which may be elevated or at ground-level. The puffs are advected by a horizontal wind field that is defined in three dimensions. The wind field may be adjusted for expected topographic effects. The concentration distribution within the puffs is initially assumed to be Gaussian in the horizontal and vertical. However, the vertical concentration distribution is modified by assuming reflection at the ground and the top of the atmospheric mixing layer. Material is deposited on the surface using a source depletion, dry deposition model and a washout coefficient model. The model also treats the decay of a primary effluent species and the ingrowth and decay of a single daughter species using a first order decay process. This report is divided into two parts. The first part discusses the theoretical and mathematical bases upon which MESOI Version 2.0 is based. The second part contains the MESOI computer code. The programs were written in the ANSI standard FORTRAN 77 and were developed on a VAX 11/780 computer. 43 references, 14 figures, 13 tables.

Ramsdell, J.V.; Athey, G.F.; Glantz, C.S.

1983-11-01T23:59:59.000Z

173

ARM - Measurement - Atmospheric turbulence  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

turbulence turbulence ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric turbulence High frequency velocity fluctuations that lead to turbulent transport of momentum, heat, mositure, and passive scalars, and often expressed in terms of variances and covariances. Categories Atmospheric State, Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

174

Differential atmospheric tritium sampler  

DOE Patents [OSTI]

An atmospheric tritium sampler is provided which uses a carrier gas comprised of hydrogen gas and a diluting gas, mixed in a nonexplosive concentration. Sample air and carrier gas are drawn into and mixed in a manifold. A regulator meters the carrier gas flow to the manifold. The air sample/carrier gas mixture is pulled through a first moisture trap which adsorbs water from the air sample. The moisture then passes through a combustion chamber where hydrogen gas in the form of H/sub 2/ or HT is combusted into water. The manufactured water is transported by the air stream to a second moisture trap where it is adsorbed. The air is then discharged back into the atmosphere by means of a pump.

Griesbach, O.A.; Stencel, J.R.

1987-10-02T23:59:59.000Z

175

Differential atmospheric tritium sampler  

DOE Patents [OSTI]

An atmospheric tritium sampler is provided which uses a carrier gas comprised of hydrogen gas and a diluting gas, mixed in a nonexplosive concentration. Sample air and carrier gas are drawn into and mixed in a manifold. A regulator meters the carrier gas flow to the manifold. The air sample/carrier gas mixture is pulled through a first moisture trap which adsorbs water from the air sample. The mixture then passes through a combustion chamber where hydrogen gas in the form of H.sub.2 or HT is combusted into water. The manufactured water is transported by the air stream to a second moisture trap where it is adsorbed. The air is then discharged back into the atmosphere by means of a pump.

Griesbach, Otto A. (Langhorne, PA); Stencel, Joseph R. (Skillman, NJ)

1990-01-01T23:59:59.000Z

176

The changing atmosphere  

SciTech Connect (OSTI)

The chemistry of the atmosphere is changing, in large measure because of gases emitted by such human activities as farming, manufacturing, and the combustion of fossil fuels. The deleterious effects are increasingly evident; they may well become worse in the years ahead. This paper discusses the pollutants and the environmental perturbations with which they are associated. The authors believe the solution to the earth's environmental problems lies in a truly global effort.

Graedel, T.E.; Crutzen, P.J.

1989-09-01T23:59:59.000Z

177

ORISE: Climate and Atmospheric Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Climate and Atmospheric Research Climate and Atmospheric Research Capabilities Overview U.S. Climate Reference Network U.S. Historical Climate Network Contact Us Oak Ridge Institute for Science Education Climate and Atmospheric Research The Oak Ridge Institute for Science and Education (ORISE) partners with the National Oceanic and Atmospheric Administration's Atmospheric Turbulence and Diffusion Division (ATDD) to conduct climate research focused on issues of national and global importance. Research is performed with personnel support from ORISE's Independent Environmental Assessment and Verification (IEAV) programs, as well as in collaboration with scientists and engineers from Oak Ridge National Laboratory (ORNL), and numerous other organizations, government agencies, universities and private research institutions.

178

Impact of Agricultural Practice on Regional Climate in a CoupledLand Surface Mesoscale Model  

SciTech Connect (OSTI)

The land surface has been shown to form strong feedbacks with climate due to linkages between atmospheric conditions and terrestrial ecosystem exchanges of energy, momentum, water, and trace gases. Although often ignored in modeling studies, land management itself may form significant feedbacks. Because crops are harvested earlier under drier conditions, regional air temperature, precipitation, and soil moisture, for example, affect harvest timing, particularly of rain-fed crops. This removal of vegetation alters the land surface characteristics and may, in turn, affect regional climate. We applied a coupled climate(MM5) and land-surface (LSM1) model to examine the effects of early and late winter wheat harvest on regional climate in the Department of Energy Atmospheric Radiation Measurement (ARM) Climate Research Facility in the Southern Great Plains, where winter wheat accounts for 20 percent of the land area. Within the winter wheat region, simulated 2 m air temperature was 1.3 C warmer in the Early Harvest scenario at mid-day averaged over the two weeks following harvest. Soils in the harvested area were drier and warmer in the top 10 cm and wetter in the 10-20 cm layer. Midday soils were 2.5 C warmer in the harvested area at mid-day averaged over the two weeks following harvest. Harvest also dramatically altered latent and sensible heat fluxes. Although differences between scenarios diminished once both scenarios were harvested, the short-term impacts of land management on climate were comparable to those from land cover change demonstrated in other studies.

Cooley, H.S.; Riley, W.J.; Torn, M.S.; He, Y.

2004-07-01T23:59:59.000Z

179

An analytical coarse-graining method which preserves the free energy, structural correlations, and thermodynamic state of polymer melts from the atomistic to the mesoscale  

SciTech Connect (OSTI)

Structural and thermodynamic consistency of coarse-graining models across multiple length scales is essential for the predictive role of multi-scale modeling and molecular dynamic simulations that use mesoscale descriptions. Our approach is a coarse-grained model based on integral equation theory, which can represent polymer chains at variable levels of chemical details. The model is analytical and depends on molecular and thermodynamic parameters of the system under study, as well as on the direct correlation function in the k ? 0 limit, c{sub 0}. A numerical solution to the PRISM integral equations is used to determine c{sub 0}, by adjusting the value of the effective hard sphere diameter, d{sub HS}, to agree with the predicted equation of state. This single quantity parameterizes the coarse-grained potential, which is used to perform mesoscale simulations that are directly compared with atomistic-level simulations of the same system. We test our coarse-graining formalism by comparing structural correlations, isothermal compressibility, equation of state, Helmholtz and Gibbs free energies, and potential energy and entropy using both united atom and coarse-grained descriptions. We find quantitative agreement between the analytical formalism for the thermodynamic properties, and the results of Molecular Dynamics simulations, independent of the chosen level of representation. In the mesoscale description, the potential energy of the soft-particle interaction becomes a free energy in the coarse-grained coordinates which preserves the excess free energy from an ideal gas across all levels of description. The structural consistency between the united-atom and mesoscale descriptions means the relative entropy between descriptions has been minimized without any variational optimization parameters. The approach is general and applicable to any polymeric system in different thermodynamic conditions.

McCarty, J.; Clark, A. J.; Copperman, J.; Guenza, M. G., E-mail: mguenza@uoregon.edu [Department of Chemistry and Biochemistry, and Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403 (United States)

2014-05-28T23:59:59.000Z

180

Use of ARM observations and numerical models to determine radiative and latent heating profiles of mesoscale convective systems for general circulation models  

SciTech Connect (OSTI)

This three-year project, in cooperation with Professor Bob Houze at University of Washington, has been successfully finished as planned. Both ARM (the Atmospheric Radiation Measurement Program) data and cloud-resolving model (CRM) simulations were used to identify the water budgets of clouds observed in two international field campaigns. The research results achieved shed light on several key processes of clouds in climate change (or general circulation models), which are summarized below. 1. Revealed the effect of mineral dust on mesoscale convective systems (MCSs) Two international field campaigns near a desert and a tropical coast provided unique data to drive and evaluate CRM simulations, which are TWP-ICE (the Tropical Warm Pool International Cloud Experiment) and AMMA (the African Monsoon Multidisciplinary Analysis). Studies of the two campaign data were contrasted, revealing that much mineral dust can bring about large MCSs via ice nucleation and clouds. This result was reported as a PI presentation in the 3rd ASR Science Team meeting held in Arlington, Virginia in March 2012. A paper on the studies was published in the Journal of the Atmospheric Sciences (Zeng et al. 2013). 2. Identified the effect of convective downdrafts on ice crystal concentration Using the large-scale forcing data from TWP-ICE, ARM-SGP (the Southern Great Plains) and other field campaigns, Goddard CRM simulations were carried out in comparison with radar and satellite observations. The comparison between model and observations revealed that convective downdrafts could increase ice crystal concentration by up to three or four orders, which is a key to quantitatively represent the indirect effects of ice nuclei, a kind of aerosol, on clouds and radiation in the Tropics. This result was published in the Journal of the Atmospheric Sciences (Zeng et al. 2011) and summarized in the DOE/ASR Research Highlights Summaries (see http://www.arm.gov/science/highlights/RMjY5/view). 3. Used radar observations to evaluate model simulations In cooperation with Profs. Bob Houze at University of Washington and Steven Rutledge at Colorado State University, numerical model results were evaluated with observations from W- and C-band radars and CloudSat/TRMM satellites. These studies exhibited some shortcomings of current numerical models, such as too little of thin anvil clouds, directing the future improvement of cloud microphysics parameterization in CRMs. Two papers of Powell et al (2012) and Zeng et al. (2013), summarizing these studies, were published in the Journal of the Atmospheric Sciences. 4. Analyzed the water budgets of MCSs Using ARM data from TWP-ICE, ARM-SGP and other field campaigns, the Goddard CRM simulations were carried out to analyze the water budgets of clouds from TWP-ICE and AMMA. The simulations generated a set of datasets on clouds and radiation, which are available http://cloud.gsfc.nasa.gov/. The cloud datasets were available for modelers and other researchers aiming to improve the representation of cloud processes in multi-scale modeling frameworks, GCMs and climate models. Special datasets, such as 3D cloud distributions every six minutes for TWP-ICE, were requested and generated for ARM/ASR investigators. Data server records show that 86,206 datasets were downloaded by 120 users between April of 2010 and January of 2012. 5. MMF simulations The Goddard MMF (multi-scale modeling framework) has been improved by coupling with the Goddard Land Information System (LIS) and the Goddard Earth Observing System Model, Version 5 (GOES5). It has also been optimized on NASA HEC supercomputers and can be run over 4000 CPUs. The improved MMF with high horizontal resolution (1 x 1 degree) is currently being applied to cases covering 2005 and 2006. The results show that the spatial distribution pattern of precipitation rate is well simulated by the MMF through comparisons with satellite retrievals from the CMOPRH and GPCP data sets. In addition, the MMF results were compared with three reanalyses (MERRA, ERA-Interim and CFSR). Although the MMF tends

Tao, Wei-Kuo; Houze, Robert, A., Jr.; Zeng, Xiping

2013-03-14T23:59:59.000Z

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Atmospheric Pressure Deposition for Electrochromic Windows |...  

Broader source: Energy.gov (indexed) [DOE]

Atmospheric Pressure Deposition for Electrochromic Windows Atmospheric Pressure Deposition for Electrochromic Windows Emerging Technologies Project for the 2013 Building...

182

Atmospheric Chemistry of Dichlorvos  

Science Journals Connector (OSTI)

Atmospheric Chemistry of Dichlorvos ... In the positive ion mode, protonated water hydrates (H3O+(H2O)n) generated by the corona discharge in the chamber diluent air were responsible for the protonation of analytes, and the ions that were mass analyzed were mainly protonated molecules ([M + H]+) and their protonated homo- and heterodimers. ... Methyl nitrite, 2-propyl nitrite and N2O5 were prepared and stored as described previously,(8, 10) and O3 in O2 diluent was generated using a Welsbach T-408 ozone generator. ...

Sara M. Aschmann; Ernesto C. Tuazon; William D. Long; Roger Atkinson

2011-03-15T23:59:59.000Z

183

Atmospheric propagation of THz radiation.  

SciTech Connect (OSTI)

In this investigation, we conduct a literature study of the best experimental and theoretical data available for thin and thick atmospheres on THz radiation propagation from 0.1 to 10 THz. We determined that for thick atmospheres no data exists beyond 450 GHz. For thin atmospheres data exists from 0.35 to 1.2 THz. We were successful in using FASE code with the HITRAN database to simulate the THz transmission spectrum for Mauna Kea from 0.1 to 2 THz. Lastly, we successfully measured the THz transmission spectra of laboratory atmospheres at relative humidities of 18 and 27%. In general, we found that an increase in the water content of the atmosphere led to a decrease in the THz transmission. We identified two potential windows in an Albuquerque atmosphere for THz propagation which were the regions from 1.2 to 1.4 THz and 1.4 to 1.6 THz.

Wanke, Michael Clement; Mangan, Michael A.; Foltynowicz, Robert J.

2005-11-01T23:59:59.000Z

184

Ausgabe 4/2005 Forschungszentrum Karlsruhe  

E-Print Network [OSTI]

Wasserstoff wird deutschlich günstiger 6 Publikationen: -Energieträger Wasserstoff 7 Veranstaltungen: -Zwei

Stein, Oliver

185

Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft  

E-Print Network [OSTI]

noch mit der Kerntechnik gleichgesetzt, ist dieser Eindruck korrekt? Professor Popp: Nein,das Forschungszentrum ist natürlich aufgrund seiner Historie sehr eng mit der Kerntechnik verbunden und wir nehmen den

Stein, Oliver

186

Francesco Grilli: Karlsruhe Institute of Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

gained at the Lab was communicating research aims to funders. He was asked to help at an organizational peer review. "Postdocs don't usually present at those since they can be...

187

EMSL: Science: Atmospheric Aerosol Systems  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Aerosol Systems Atmospheric Aerosol Systems atmospheric logo Nighttime enhancement of nitrogen-containing organic compounds, or NOC Observed nighttime enhancement of nitrogen-containing organic compounds, or NOC, showed evidence of being formed by reactions that transform carbonyls into imines. The Atmospheric Aerosol Systems Science Theme focuses on understanding the chemistry, physics and molecular-scale dynamics of aerosols for model parameterization to improve the accuracy of climate model simulations and develop a predictive understanding of climate. By elucidating the role of natural and anthropogenic regional and global climate forcing mechanisms, EMSL can provide DOE and others with the ability to develop cost-effective strategies to monitor, control and mitigate them.

188

ARM - Evolution of the Atmosphere  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

provides clues as to the composition of the early atmosphere. Volcanic emissions include nitrogen, sulfur dioxide, carbon dioxide, and trace gases such as argon. Although oxygen,...

189

DOE research on atmospheric aerosols  

SciTech Connect (OSTI)

Atmospheric aerosols are the subject of a significant component of research within DOE`s environmental research activities, mainly under two programs within the Department`s Environmental Sciences Division, the Atmospheric Radiation Measurement (ARM) Program and the Atmospheric Chemistry Program (ACP). Research activities conducted under these programs include laboratory experiments, field measurements, and theoretical and modeling studies. The objectives and scope of these programs are briefly summarized. The ARM Program is the Department`s major research activity focusing on atmospheric processes pertinent to understanding global climate and developing the capability of predicting global climate change in response to energy related activities. The ARM approach consists mainly of testing and improving models using long-term measurements of atmospheric radiation and controlling variables at highly instrumented sites in north central Oklahoma, in the Tropical Western Pacific, and on the North Slope of Alaska. Atmospheric chemistry research within DOE addresses primarily the issue of atmospheric response to emissions from energy-generation sources. As such this program deals with the broad topic known commonly as the atmospheric source-receptor sequence. This sequence consists of all aspects of energy-related pollutants from the time they are emitted from their sources to the time they are redeposited at the Earth`s surface.

Schwartz, S.E.

1995-11-01T23:59:59.000Z

190

Space Science : Atmosphere Greenhouse Effect  

E-Print Network [OSTI]

Space Science : Atmosphere Greenhouse Effect Part-5a Solar + Earth Spectrum IR Absorbers Grey Atmosphere Greenhouse Effect #12;Radiation: Solar and Earth Surface B"(T) Planck Ideal Emission Integrate at the carbon cycle #12;However, #12;Greenhouse Effect is Complex #12;PLANETARY ENERGY BALANCE G+W fig 3-5

Johnson, Robert E.

191

Atmospheric Radiation Measurement (ARM) Climate Research Facility and Atmospheric  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Radiation Measurement (ARM) Atmospheric Radiation Measurement (ARM) Climate Research Facility and Atmospheric System Research (ASR) Science and Infrastructure Steering Committee CHARTER June 2012 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not

192

Observing chemistry of atmospheric particles | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Observing chemistry of atmospheric particles Observing chemistry of atmospheric particles Review article reached the International Reviews in Physical Chemistry most read list NULL...

193

Radon Content of the Atmosphere  

Science Journals Connector (OSTI)

... preliminary work. The absence of levels of a higher order suggests that the contribution of radon from this source does not represent a significant addition to the total atmospheric level. ... Domestic 0.70

W. ANDERSON; R. C. TURNER

1956-07-28T23:59:59.000Z

194

Laser Atmospheric Studies with VERITAS  

E-Print Network [OSTI]

As a calibrated laser pulse propagates through the atmosphere, the amount of Rayleigh-scattered light arriving at the VERITAS telescopes can be calculated precisely. This technique was originally developed for the absolute calibration of ultra-high-energy cosmic-ray fluorescence telescopes but is also applicable to imaging atmospheric Cherenkov telescopes (IACTs). In this paper, we present two nights of laser data taken with the laser at various distances away from the VERITAS telescopes and compare it to Rayleigh scattering simulations.

C. M. Hui; for the VERITAS collaboration

2007-09-25T23:59:59.000Z

195

Doubling of atmospheric methane supported  

SciTech Connect (OSTI)

Atmospheric methane over the past 27,000 years was measured by analyzing air trapped in glacial ice in Greenland and Antarctica. Atmospheric concentrations were stable over that period until about 200 years b.p. In the last 200 years they have more than doubled. This change in concentration is correlated with the increase in human population; the implications for climate modification are discussed. 1 figure, 3 references.

Kerr, R.A.

1984-11-23T23:59:59.000Z

196

A STUDY OF ICE ACCUMULATION AND STABILITY IN MARTIAN CRATERS UNDER PAST ORBITAL CONDITIONS USING THE LMD MESOSCALE MODEL.  

E-Print Network [OSTI]

constraints Methodological approach Better understand the local distribution of gullies and glaciers; Blowing snow = snow coming from other areas and brought by winds. Ice sublimation: · High surface temperature, low relative humidity in the lower atmosphere, high wind strength; · High wind erosion. Figure 1

Madeleine, Jean-Baptiste

197

Atmospheric Chemistry, Modeling, and Biogeochemistry of Mercury  

E-Print Network [OSTI]

activities that release mercury to the atmosphere include coal burning, industrial processes, waste incine

198

High altitude atmospheric discharges according to the runaway air breakdown mechanism  

SciTech Connect (OSTI)

High altitude optical transients - red sprites, blue jets, and elves - are modeled in the context of the relativistic electron runaway air breakdown mechanism. These emissions are usually associated with large mesoscale convective systems (hereafter MCS). In thunderstorms cloud electrification proceeds over a time scale long enough to permit the conducting atmosphere above the cloud to polarize and short out the thunderstorm electric field. When a lightning strike rapidly neutralizes a cloud charge layer runaway driving fields can develop in the stratosphere and mesosphere. According to present simulations of the full runaway process the variety of observed optical emissions are due to the nature of the normal lightning event in the MCS that kick starts the runaway avalanche. In this paper the authors describe some details of the model, present the results of the evolution of the primary electron population, and summarize the initial conditions necessary for different types of discharges. Two companion papers present (a) the predicted optical, gamma ray, and radio emissions caused by these electrical discharges, and (b) the time evolution of the secondary electron population and its implications in terms of observables.

Symbalisty, E.; Roussel-Dupre, R.; Yukhimuk, V.; Taranenko, Y.

1997-04-01T23:59:59.000Z

199

CDIAC Atmospheric Pressure Data Sets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Pressure Atmospheric Pressure CDIAC Climate Holdings Containing Atmospheric Pressure Data Global Data Sets Data Set Name Investigators Data Type/Format Period of Record Global Historical Climatology Network (GHCN); Vs. 1 (CDIAC NDP-041) R.S. Vose et al. Surface stations; monthly mean sea-level pressure Varies by station; through 1990 Extended Edited Synoptic Cloud Reports from Ships and Land Stations Over the Globe, 1952-2009 (CDIAC NDP-026C) C.J. Hahn, S.G. Warren, and R. Eastman Six-hourly synoptic observations of sea-level pressure Land 1971-2009; Ocean 1952-2008 Global Historical Climatology Network (GHCN); Vs. 2 (Note: the above link takes you to NOAA's National Climatic Data Center website.) R.S. Vose et al. Surface stations; monthly mean sea-level pressure Varies by station; some through most recent month

200

National Atmospheric Release Advisory Center  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NARAC TOC NARAC TOC The National Atmospheric Release Advisory Center, NARAC, provides tools and services to the Federal Government, that map the probable spread of hazardous material accidentally or intentionally released into the atmosphere. NARAC provides atmospheric plume predictions in time for an emergency manager to decide if taking protective action is necessary to protect the health and safety of people in affected areas. Located at the Lawrence Livermore National Laboratory, NARAC is a national support and resource center for planning, real-time assessment, emergency response, and detailed studies of incidents involving a wide variety of hazards, including nuclear, radiological, chemical, biological, and natural emissions. In an emergency situation (if lives are at risk), event-specific NARAC

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

CDIAC Atmospheric Moisture Data Sets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Moisture Atmospheric Moisture CDIAC Climate Holdings Containing Atmospheric Moisture Data Global Data Sets Data Set Name Investigators Data Type/Format Period of Record Extended Edited Synoptic Cloud Reports from Ships and Land Stations Over the Globe, 1952-2009 (CDIAC NDP-026C) C.J. Hahn, S.G. Warren, and R. Eastman Six-hourly synoptic observations of dew point depression (combined with air temperature) Land 1971-2009; Ocean 1952-2008 Regional Data Sets Data Set Name Investigators Data Type/Format Period of Record Six- and Three-Hourly Meteorological Observations from 223 Former U.S.S.R. Stations (CDIAC NDP-048) V. Razuvaev et al. Surface stations; 6- and 3-hourly observations of relative humidity, vapor pressure, humidity deficit, and dew point temperature Varies by station; through 2000

202

Chemical modeling of exoplanet atmospheres  

E-Print Network [OSTI]

The past twenty years have revealed the diversity of planets that exist in the Universe. It turned out that most of exoplanets are different from the planets of our Solar System and thus, everything about them needs to be explored. Thanks to current observational technologies, we are able to determine some information about the atmospheric composition, the thermal structure and the dynamics of these exoplanets, but many questions remain still unanswered. To improve our knowledge about exoplanetary systems, more accurate observations are needed and that is why the Exoplanet Characterisation Observatory (EChO) is an essential space mission. Thanks to its large spectral coverage and high spectral resolution, EChO will provide exoplanetary spectra with an unprecedented accuracy, allowing to improve our understanding of exoplanets. In this work, we review what has been done to date concerning the chemical modeling of exoplanet atmospheres and what are the main characteristics of warm exoplanet atmospheres, which a...

Venot, Olivia

2014-01-01T23:59:59.000Z

203

atmospheric pressure | OpenEI  

Open Energy Info (EERE)

pressure pressure Dataset Summary Description (Abstract):Atmospheric Pressure (kPa)NASA Surface meteorology and Solar Energy (SSE) Release 6.0 Data Set (Nov 2007)22-year Monthly & Annual Average (July 1983 - June 2005)Parameter: Atmospheric Pressure (kPa)Internet: http://eosweb.larc.nasa.gov/sse/Note 1: SSE Methodology & Accuracy sections onlineNote 2: Lat/Lon values indicate the lower left corner of a 1x1 degree region. Negative values are south and west; positive values are north and east. Boundaries of the -90/-180 region Source U.S. National Aeronautics and Space Administration (NASA), Surface meteorology and Solar Energy (SSE) Date Released March 31st, 2009 (5 years ago) Date Updated Unknown Keywords atmospheric pressure climate NASA SWERA UNEP Data text/csv icon Download Data (csv, 46 MiB)

204

SIO 217a Atmospheric and Climate Sciences I: Atmospheric Thermodynamics  

E-Print Network [OSTI]

. Radiant Energy. Radiative Transfer. Transport.) 10-Oct W 3 More Transfer Processes 15-Oct M 4 4 Gas. Equation of State. Hydrostatic Equilibrium.) 3-Oct W 2 2.11 First and Second Laws and Characteristics. Precipitation Processes. Radiative Transfer in a Cloudy Atmosphere. Fogs, Stratus

Russell, Lynn

205

Linked Environments for Atmospheric Discovery Linked Environments for Atmospheric  

E-Print Network [OSTI]

Unidata Program Center #12;Linked Environments for Atmospheric Discovery The Team: 9 institutions and 105 MethodologyTraditional NWP Methodology STATIC OBSERVATIONS Radar Data Mobile Mesonets Surface Observations Satellites The Process is Entirely Prescheduled and Serial; It Does NOT Respond to the Weather! The Process

206

Atmospheric Environment 40 (2006) 17431758 Impact of urban heat island on regional atmospheric pollution  

E-Print Network [OSTI]

and spatial distribution of atmospheric pollutants over the Paris region. One anticyclonic episode from Elsevier Ltd. All rights reserved. Keywords: Regional atmospheric pollution; Urban area micrometeorology are large sources of atmospheric pollutants. Their spatial distribution and their temporal evolution can

Ribes, Aurélien

207

Atmosphere-Surface Exchange Measurements  

Science Journals Connector (OSTI)

...HICKS, B.B., A SIMULATION OF THE EDDY ACCUMULATION...CLOSURES IN 2ND-ORDER MODELING, JOURNAL OF THE ATMOSPHERIC...Their advantag-es are rapid response, linear output...the measurement and modeling of surface fluxes are...the appli-cation of automated conditional sampling...

W. F. Dabberdt; D. H. Lenschow; T. W. Horst; P. R. Zimmerman; S. P. Oncley; A. C. Delany

1993-06-04T23:59:59.000Z

208

ATMOSPHERIC SCIENCES 2014-2015  

E-Print Network [OSTI]

ATMOSPHERIC SCIENCES 2014-2015 Graduate Student Handbook followed a Code of Honor, which is stated in this very simple verse: An Aggie does not lie, cheat, or steal that knowledge for the benefit of society. Our most fundamental mission is to help students at all levels, from

209

Pulsed atmospheric fluidized bed combustion  

SciTech Connect (OSTI)

The general specifications for a Pulsed Atmospheric Fluidized Bed Combustor Design Report (PAFBC) plant are presented. The design tasks for the PAFBC are described in the following areas: Coal/Limestone preparation and feed system; pulse combustor; fluidized bed; boiler parts; and ash handling system.

Not Available

1992-08-01T23:59:59.000Z

210

13, 90179049, 2013 Stable atmospheric  

E-Print Network [OSTI]

ACPD 13, 9017­9049, 2013 Stable atmospheric methane in the 2000s I. Pison et al. Title Page Utrecht, Utrecht University, Utrecht, the Netherlands 3 SRON Netherlands Institute for Space Research, Utrecht, the Netherlands 4 Vrije Universiteit, Department of Systems Ecology, Amsterdam, the Netherlands 5

Paris-Sud XI, Université de

211

Comparing radial velocities of atmospheric lines with radiosonde measurements  

Science Journals Connector (OSTI)

......30km u m1 0.01 E-W wind component, east positive v m1 0.01 N-S wind component, north positive...mesoscale models [MM5 (4), WRF (5), MesoNH (6...model augmented by some local weather stations. Details...KAMM) and compare with wind measurements taken at......

P. Figueira; F. Kerber; A Chacon; C. Lovis; N. C. Santos; G. Lo Curto; M. Sarazin; F. Pepe

2012-03-11T23:59:59.000Z

212

Modelling the Effect of Ocean Waves on the Atmospheric and Ocean Boundary Layers  

Science Journals Connector (OSTI)

Ocean waves, in addition to generating direct forces on fixed and floating offshore wind generator structures, also have significant indirect effects via their influence on the atmospheric and oceanic boundary layers above and below the water surface. In the atmospheric boundary layer the waves act as roughness elements, influencing the turbulent flow and the vertical wind speed profile, and induce oscillatory motions in the airflow. Spray droplets from breaking wave crests enhance structure corrosion, and may lead to icing under low-temperature conditions. Below the water surface, the air-sea momentum flux and mechanical energy flux, mediated by the waves and wave-generated turbulence, affect the vertical profiles of ocean current, temperature, and salinity. Effects include modifying the structural forces and dynamics, and the movement and dispersion of marine organisms, pollutants, and air bubbles generated by breaking waves, with consequences for fouling, corrosion, and environmental impact. Measurement of relevant airflow and ocean dynamical variables is also challenging, as near the water surface it is often necessary to use instruments mounted on moving measurement platforms. Modelling such boundary-layer effects is a complex task, as a result of feedbacks between the airflow, wave field, current field, and turbulence in the atmosphere and the ocean. We present results from a coupled model study of the North Sea and Norwegian Sea area. We employ a mesoscale atmosphere model (WRF) and a spectral wave model (WAM), running simultaneously and coupled using the open-source coupler MCEL which can interpolate between different model grids and time steps. To investigate the ocean boundary layer, one-dimensional model experiments were performed for an idealized Ekman layer and for locations in the North Sea, Atlantic Ocean, and the northern Pacific, using a version of the GOTM turbulence model, modified to take wave dynamics into account. Results show how the wave field alters the ocean's aerodynamic roughness and the air–sea momentum flux, depending on the relation between the surface wind speed and the propagation speed of the wave crests (the wave age). These effects will feed back into the airflow, wind speed and turbulence profile in the boundary layer. The ocean dynamics experiments showed results which compare favourably with field observations from the LOTUS3 and PROVESS experiments in the north Atlantic and North Sea, and Ocean Weather Station Papa in the Pacific Ocean.

Alastair D. Jenkins; Mostafa Bakhoday Paskyabi; Ilker Fer; Alok Gupta; Muralidhar Adakudlu

2012-01-01T23:59:59.000Z

213

Long Range Weather Prediction III: Miniaturized Distributed Sensors for Global Atmospheric Measurements  

SciTech Connect (OSTI)

We continue consideration of ways-and-means for creating, in an evolutionary, ever-more-powerful manner, a continually-updated data-base of salient atmospheric properties sufficient for finite differenced integration-based, high-fidelity weather prediction over intervals of 2-3 weeks, leveraging the 10{sup 14} FLOPS digital computing systems now coming into existence. A constellation comprised of 10{sup 6}-10{sup 9} small atmospheric sampling systems--high-tech superpressure balloons carrying early 21st century semiconductor devices, drifting with the local winds over the meteorological spectrum of pressure-altitudes--that assays all portions of the troposphere and lower stratosphere remains the central feature of the proposed system. We suggest that these devices should be active-signaling, rather than passive-transponding, as we had previously proposed only for the ground- and aquatic-situated sensors of this system. Instead of periodic interrogation of the intra-atmospheric transponder population by a constellation of sophisticated small satellites in low Earth orbit, we now propose to retrieve information from the instrumented balloon constellation by existing satellite telephony systems, acting as cellular tower-nodes in a global cellular telephony system whose ''user-set'' is the atmospheric-sampling and surface-level monitoring constellations. We thereby leverage the huge investment in cellular (satellite) telephony and GPS technologies, with large technical and economic gains. This proposal minimizes sponsor forward commitment along its entire programmatic trajectory, and moreover may return data of weather-predictive value soon after field activities commence. We emphasize its high near-term value for making better mesoscale, relatively short-term weather predictions with computing-intensive means, and its great long-term utility in enhancing the meteorological basis for global change predictive studies. We again note that adverse impacts of weather involve continuing costs of the order of 1% of GDP, a large fraction of which could be retrieved if high-fidelity predictions of two weeks forward applicability were available. These {approx}$10{sup 2} B annual savings dwarf the <$1 B costs of operating a rational, long-range weather prediction system of the type proposed.

Teller, E; Leith, C; Canavan, G; Wood, L

2001-11-13T23:59:59.000Z

214

Long Range Weather Prediction III: Miniaturized Distributed Sensors for Global Atmospheric Measurements  

DOE R&D Accomplishments [OSTI]

We continue consideration of ways-and-means for creating, in an evolutionary, ever-more-powerful manner, a continually-updated data-base of salient atmospheric properties sufficient for finite differenced integration-based, high-fidelity weather prediction over intervals of 2-3 weeks, leveraging the 10{sup 14} FLOPS digital computing systems now coming into existence. A constellation comprised of 10{sup 6}-10{sup 9} small atmospheric sampling systems--high-tech superpressure balloons carrying early 21st century semiconductor devices, drifting with the local winds over the meteorological spectrum of pressure-altitudes--that assays all portions of the troposphere and lower stratosphere remains the central feature of the proposed system. We suggest that these devices should be active-signaling, rather than passive-transponding, as we had previously proposed only for the ground- and aquatic-situated sensors of this system. Instead of periodic interrogation of the intra-atmospheric transponder population by a constellation of sophisticated small satellites in low Earth orbit, we now propose to retrieve information from the instrumented balloon constellation by existing satellite telephony systems, acting as cellular tower-nodes in a global cellular telephony system whose ''user-set'' is the atmospheric-sampling and surface-level monitoring constellations. We thereby leverage the huge investment in cellular (satellite) telephony and GPS technologies, with large technical and economic gains. This proposal minimizes sponsor forward commitment along its entire programmatic trajectory, and moreover may return data of weather-predictive value soon after field activities commence. We emphasize its high near-term value for making better mesoscale, relatively short-term weather predictions with computing-intensive means, and its great long-term utility in enhancing the meteorological basis for global change predictive studies. We again note that adverse impacts of weather involve continuing costs of the order of 1% of GDP, a large fraction of which could be retrieved if high-fidelity predictions of two weeks forward applicability were available. These{approx}$10{sup 2} B annual savings dwarf the<$1 B costs of operating a rational, long-range weather prediction system of the type proposed.

Teller, E.; Leith, C.; Canavan, G.; Wood, L.

2001-11-13T23:59:59.000Z

215

Land and Atmospheric Science GRAD STUDENT HANDBOOK  

E-Print Network [OSTI]

1 Land and Atmospheric Science GRAD STUDENT HANDBOOK 2011-2012 WELCOME Welcome to the Graduate on the fundamentals of Earth system processes related to land and atmosphere and their coupled interactions. Students

Minnesota, University of

216

Land and Atmospheric Science GRAD STUDENT HANDBOOK  

E-Print Network [OSTI]

1 Land and Atmospheric Science GRAD STUDENT HANDBOOK 2012-2013 WELCOME Welcome to the Graduate on the fundamentals of Earth system processes related to land and atmosphere and their coupled interactions. Students

Minnesota, University of

217

Sulfuryl fluoride in the global atmosphere  

E-Print Network [OSTI]

The first calibrated high-frequency, high-precision, in situ atmospheric and archived air measurements of the fumigant sulfuryl fluoride (SO[subscript 2]F[subscript 2]) have been made as part of the Advanced Global Atmospheric ...

Muhle, J.

218

Lifetimes and time scales in atmospheric chemistry  

Science Journals Connector (OSTI)

...such as for years with extensive forest fires. Moving beyond atmospheric chemistry, extension of this approach to Earth system models could yield surprises. The coupling across different components of the chemistry-climate system, such as atmospheric...

2007-01-01T23:59:59.000Z

219

Vertical profiles of radar reflectivity of convective cells in tropical and mid-latitude mesoscale convective systems  

E-Print Network [OSTI]

of tropical oceanic and tropical continental MCSs during the monsoon wet seasons of 1987/1988 and 1988/1989. The atmospheric structure, particularly the CAPE and low level vertical wind shear for all the MCS events studied is analyzed to help... lectivity, at a height of 1. 9 km, of the 68 72 2 December 1988 tropical monsoon case at 0542 LT . . 74 36 37 38 As in Fig. 35, except at 0609 LT Time series of zonal wind and CAPE at Darwin during the 1988/1989 monsoon wet season. Contour plot...

Lutz, Kurt Reed

2012-06-07T23:59:59.000Z

220

The VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx): Goals, platforms, and field operations  

SciTech Connect (OSTI)

The VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) was an international field program designed to make observations of poorly understood but critical components of the coupled climate system of the southeast Pacific. This region is characterized by strong coastal upwelling, the coolest SSTs in the tropical belt, and is home to the largest subtropical stratocumulus deck on Earth. The field intensive phase of VOCALS-REx took place during October and November 2008 and constitutes a critical part of a broader CLIVAR program (VOCALS) designed to develop and promote scientific activities leading to improved understanding, model simulations, and predictions of the southeastern Pacific (SEP) coupled ocean-atmosphere-land system, on diurnal to interannual timescales. The other major components of VOCALS are a modeling program with a model hierarchy ranging from the local to global scales, and a suite of extended observations from regular research cruises, instrumented moorings, and satellites. The two central themes of VOCALS-REx focus upon (a) links between aerosols, clouds and precipitation and their impacts on marine stratocumulus radiative properties, and (b) physical and chemical couplings between the upper ocean and the lower atmosphere, including the role that mesoscale ocean eddies play. A set of hypotheses designed to be tested with the combined field, monitoring and modeling work in VOCALS is presented here. A further goal of VOCALS-REx is to provide datasets for the evaluation and improvement of large-scale numerical models. VOCALS-REx involved five research aircraft, two ships and two surface sites in northern Chile. We describe the instrument payloads and key mission strategies for these platforms and give a summary of the missions conducted.

Wood, R.; Springston, S.; Mechoso, C. R.; Bretherton, C. S.; A.Weller, R.; Huebert, B.; Straneo, F.; Albrecht, B. A.; Coe, H.; Allen, G.; Vaughan, G.; Daum, P.; Fairall, C.; Chand, D.; Klenner, L. G.; Garreaud, R.; Grados, C.; Covert, D. S.; Bates, T. S.; Krejci, R.; Russell, L. M.; Szoeke, S. d.; Brewer, A.; Yuter, S. E.; Chaigneau, A.; Toniazzo, T.; Minnis, P.; Palikonda, R.; Abel, S. J.; Brown, W. O. J.; Williams, S.; Fochesatto, J.; Brioude, J.; Bower, K. N

2011-01-21T23:59:59.000Z

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Surface Modification by Atmospheric Pressure Plasma for Improved Bonding  

E-Print Network [OSTI]

composites using atmospheric plasma treatment. J. Appl.of polymer surfaces: atmospheric plasma versus vacuum plasmaA. Morgan, The effect of atmospheric plasma treatment on the

Williams, Thomas Scott

2013-01-01T23:59:59.000Z

222

1997 Atmospheric Chemistry Colloquium for Emerging Senior Scientists  

SciTech Connect (OSTI)

DOE's Atmospheric Chemistry Program is providing partial funding for the Atmospheric Chemistry Colloquium for Emerging Senior Scientists (ACCESS) and FY 1997 Gordon Research Conference in Atmospheric Chemistry

Paul H. Wine

1998-11-23T23:59:59.000Z

223

Model Atmospheres for Low Field Neutron Stars  

E-Print Network [OSTI]

We compute model atmospheres and emergent spectra for low field (Bsolar abundance and iron atmospheres. We compare our results to high field magnetic atmospheres, available only for hydrogen. An application to apparently thermal flux from the low field millisecond pulsar PSR J0437--4715 shows that H atmospheres fit substantially better than Fe models. We comment on extension to high fields and the implication of these results for neutron star luminosities and radii.

Mohan Rajagopal; Roger Romani

1995-10-19T23:59:59.000Z

224

On the energy content of the atmosphere  

Science Journals Connector (OSTI)

Vertical profiles of the content of sensible heat, potential energy, and latent heat in the atmosphere between...

Stefan L. Hastenrath

1969-01-01T23:59:59.000Z

225

Radar range measurements in the atmosphere.  

SciTech Connect (OSTI)

The earth's atmosphere affects the velocity of propagation of microwave signals. This imparts a range error to radar range measurements that assume the typical simplistic model for propagation velocity. This range error is a function of atmospheric constituents, such as water vapor, as well as the geometry of the radar data collection, notably altitude and range. Models are presented for calculating atmospheric effects on radar range measurements, and compared against more elaborate atmospheric models.

Doerry, Armin Walter

2013-02-01T23:59:59.000Z

226

Quantitative determination of atmospheric hydroperoxyl radical  

DOE Patents [OSTI]

A method for the quantitative determination of atmospheric hydroperoxyl radical comprising: (a) contacting a liquid phase atmospheric sample with a chemiluminescent compound which luminesces on contact with hydroperoxyl radical; (b) determining luminescence intensity from the liquid phase atmospheric sample; and (c) comparing said luminescence intensity from the liquid phase atmospheric sample to a standard luminescence intensity for hydroperoxyl radical. An apparatus for automating the method is also included.

Springston, Stephen R. (Upton, NY); Lloyd, Judith (Westbury, NY); Zheng, Jun (Stony Brook, NY)

2007-10-23T23:59:59.000Z

227

Radar Measurement of the Upper Atmosphere  

Science Journals Connector (OSTI)

...of the Upper Atmosphere James C. G...two decades large radars have...of the upper atmosphere. These radars...ionospheric plasma, all as functions...ionospheric plasma by detection...is wasted. Atmospheric radar scientists...305 m and an area of 73,000...frequency of 430 MHz. The radar...

James C. G. Walker

1979-10-12T23:59:59.000Z

228

Climate Impact of Increasing Atmospheric Carbon Dioxide  

Science Journals Connector (OSTI)

...RADIATIVE-TRANSFER DUE TO ATMOSPHERIC WATER-VAPOR - GLOBAL...giving rise to atmospheric mo-tions that...heat release by condensation as moist air...and because the atmospheric motions that...to thE1tfrof water in a leaky bucket...

J. Hansen; D. Johnson; A. Lacis; S. Lebedeff; P. Lee; D. Rind; G. Russell

1981-08-28T23:59:59.000Z

229

Instrumental Requirements for Global Atmospheric Chemistry  

Science Journals Connector (OSTI)

...SIMULTANEOUS MEASUREMENT OF ATMOSPHERIC CH2O, O3, AND NO2...AIRBORNE MEASUREMENTS OF ATMOSPHERIC OH, JOURNAL OF GEOPHYSICAL...HYDROGEN-CHLORIDE AND WATER AT ANTARCTIC STRATOSPHERIC...TOON, O.B., CONDENSATION OF HNO3 AND HCL IN...requirements for global atmospheric chemistry. | The field...

D. L. Albritton; F. C. Fehsenfeld; A. F. Tuck

1990-10-05T23:59:59.000Z

230

Space plasma influences on the Earth's atmosphere  

Science Journals Connector (OSTI)

...Lond. A (2003) Space plasma and the Earth's atmosphere 129 0.2 0.6 1.0...Lond. A (2003) Space plasma and the Earth's atmosphere 131 the size and the...satellites probing the space-plasma and atmospheric environments, they provide...

2003-01-01T23:59:59.000Z

231

Predicting Future Atmospheric Carbon Dioxide Levels  

Science Journals Connector (OSTI)

...Predicting future atmospheric carbon dioxide levels...1978012175 air atmosphere biosphere carbon...Predicting future atmospheric carbon dioxide levels...re-quired 5-Mhz bandwidth, which...synchronization rate of 16 khz and the picture...the interstellar plasma. For UHF frequencies...

U. Siegenthaler; H. Oeschger

1978-01-27T23:59:59.000Z

232

Impacts of Atmospheric Anthropogenic Nitrogen on the  

E-Print Network [OSTI]

anthropogenic carbon dioxide may result from this atmospheric nitrogen fertilization, leading to a decreaseImpacts of Atmospheric Anthropogenic Nitrogen on the Open Ocean R. A. Duce,1 * J. LaRoche,2 K quantities of atmospheric anthropogenic fixed nitrogen entering the open ocean could account for up to about

Ward, Bess

233

Ch4. Atmosphere and Surface Energy Balances  

E-Print Network [OSTI]

than red light. #12;The Electromagnetic Spectrum 8% 47% 45% 100% solar radiation #12;Blue Sky, Red;Energy Pathways #12;Solar radiation transfer in the atmosphere Solar radiation Reflection Atmosphere or performing any work. #12;Solar radiation transfer in the atmosphere Solar radiation Reflection Transmission

Pan, Feifei

234

Proof of the Atmospheric Greenhouse Effect  

E-Print Network [OSTI]

A recently advanced argument against the atmospheric greenhouse effect is refuted. A planet without an infrared absorbing atmosphere is mathematically constrained to have an average temperature less than or equal to the effective radiating temperature. Observed parameters for Earth prove that without infrared absorption by the atmosphere, the average temperature of Earth's surface would be at least 33 K lower than what is observed.

Smith, Arthur P

2008-01-01T23:59:59.000Z

235

ATS621, Fall 2013 Atmospheric Chemistry  

E-Print Network [OSTI]

ATS621, Fall 2013 Atmospheric Chemistry Tuesdays and Thursdays, 10 ­ 10:50, 212B ACRC) 491-8587 Teaching Assistant: Lauren Potter Atmospheric Chemistry Bldg., Room 11 Lepotter, transport, chemistry and deposition impact atmospheric chemical composition; 2) Explain the chemical

236

ATS621, Fall 2014 Atmospheric Chemistry  

E-Print Network [OSTI]

ATS621, Fall 2014 Atmospheric Chemistry Monday and Wednesday, 9 ­ 9:50, 212B ACRC Instructor: Prof) Understand quantitatively how emissions, transport, chemistry and deposition impact atmospheric chemical to Atmospheric Chemistry, D.J. Jacob Princeton University Press, 1999 PDF versions of the chapters can

Collett Jr., Jeffrey L.

237

Evaluation of Health Risks of Atmospheric Pollutants  

E-Print Network [OSTI]

4 5- (DRAFT) Evaluation of Health Risks of Atmospheric Pollutants Guy Landrieu INERIS Institut, Stuttgart : Germany (1995)" #12;INERIS: Evaluation of health risks of atmospheric pollutants (DRAFT may 1995) Evaluation of health risks of atmospheric pollutants Summary 1 Introduction 2 Background 3 Harmfulness

Paris-Sud XI, Université de

238

Light extinction in the atmosphere  

SciTech Connect (OSTI)

Atmospheric aerosol particles originating from natural sources, such as volcanos and sulfur-bearing gas emissions from the oceans, and from human sources, such as sulfur emissions from fossil fuel combustion and biomass burning, strongly affect visual air quality and are suspected to significantly affect radiative climate forcing of the planet. During the daytime, aerosols obscure scenic vistas, while at night they diminish our ability to observe stellar objects. Scattering of light is the main means by which aerosols attenuate and redistribute light in the atmosphere and by which aerosols can alter and reduce visibility and potentially modify the energy balance of the planet. Trends and seasonal variability of atmospheric aerosol loading, such as column-integrated light extinction or optical depth, and how they may affect potential climate change have been difficult to quantify because there have been few observations made of important aerosol optical parameters, such as optical depth, over the globe and over time and often these are of uneven quality. To address questions related to possible climate change, there is a pressing need to acquire more high-quality aerosol optical depth data. Extensive deployment of improved solar radiometers over the next few years will provide higher-quality extinction data over a wider variety of locations worldwide. An often overlooked source of turbidity data, however, is available from astronomical observations, particularly stellar photoelectric photometry observations. With the exception of the Project ASTRA articles published almost 20 years ago, few of these data ever appear in the published literature. This paper will review the current status of atmospheric extinction observations, as highlighted by the ASTRA work and augmented by more recent solar radiometry measurements.

Laulainen, N.

1992-06-01T23:59:59.000Z

239

Atmospheric Sciences Program Department of Marine, Earth and Atmospheric Sciences (MEAS)  

E-Print Network [OSTI]

atmospheric chemistry/air quality, boundary layer and air pollution meteorology, regional/global climatology MODELING OF MULTIPLE AIR POLLUTANTS AT URBAN AND REGIONAL SCALES Our atmosphere is a complex systemAtmospheric Sciences Program Department of Marine, Earth and Atmospheric Sciences (MEAS) (http

Parker, Matthew D. Brown

240

Numerical Simulation of the Irish Wind Climate and Comparison with Wind  

Open Energy Info (EERE)

Numerical Simulation of the Irish Wind Climate and Comparison with Wind Numerical Simulation of the Irish Wind Climate and Comparison with Wind Atlas Data Dataset Summary Description (Abstract): The wind climate of Ireland has been calculated using the Karlsruhe Atmospheric Mesoscale Model KAMM using the statistical-dynamical method. The large-scale climatology is represented by 65 classes of geostropic wind. From the frequency of the classes and the simulations the climatology of the surface wind is determined. The simulated winds are processed similar to observed data to obtain LIB-files for the Wind Atlas Analysis and Application Program WAsP. Comparisons are made with mast observations which have been analyzed by WAsP. Sites with high wind power potential are well predicted. Stations with low power are over predicted. (Purpose): Article describing an example of a KAMM

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Ireland | OpenEI  

Open Energy Info (EERE)

Ireland Ireland Dataset Summary Description (Abstract): The wind climate of Ireland has been calculated using the Karlsruhe Atmospheric Mesoscale Model KAMM. The climatology is represented by 65 frequency classes of geostropic wind that were selected as equiangular direction sectors and speed intervals with equal frequency in a sector. The results are compared with data from the European Wind Atlas which have been analyzed using the Wind Atlas Analysis and Application Program, WAsP. The prediction of the areas of higher wind power is fair. Stations with low power are overpredicted. Source Risø Date Released July 04th, 1997 (17 years ago) Date Updated July 04th, 1997 (17 years ago) Keywords documentation Ireland SWERA wind Data Quality Metrics Level of Review Some Review

242

KAMM | OpenEI  

Open Energy Info (EERE)

KAMM KAMM Dataset Summary Description (Abstract): The wind climate of Ireland has been calculated using the Karlsruhe Atmospheric Mesoscale Model KAMM using the statistical-dynamical method. The large-scale climatology is represented by 65 classes of geostropic wind. From the frequency of the classes and the simulations the climatology of the surface wind is determined. The simulated winds are processed similar to observed data to obtain LIB-files for the Wind Atlas Analysis and Application Program WAsP. Comparisons are made with mast observations which have been Source Risø DTU Date Released October 31st, 1997 (17 years ago) Date Updated August 29th, 2003 (11 years ago) Keywords Ireland KAMM methodology SWERA UNEP wind Data application/pdf icon Download Report (pdf, 397.3 KiB)

243

Why Scanning Instruments Are a Necessity for Constraining Temperature and Humidity Fields in the Lower Atmosphere  

Science Journals Connector (OSTI)

The ability of different ground-based measurement strategies for constraining thermodynamic variables in the troposphere, particularly at the mesoscale, is investigated. First, a preliminary assessment of the capability of pure-vertical sounders ...

David Themens; Frédéric Fabry

2014-11-01T23:59:59.000Z

244

Composition and Reactions of Atmospheric Aerosol Particles  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Composition and Reactions of Composition and Reactions of Atmospheric Aerosol Particles Composition and Reactions of Atmospheric Aerosol Particles Print Wednesday, 29 June 2005 00:00 Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

245

Composition and Reactions of Atmospheric Aerosol Particles  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Composition and Reactions of Atmospheric Aerosol Particles Print Composition and Reactions of Atmospheric Aerosol Particles Print Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

246

Composition and Reactions of Atmospheric Aerosol Particles  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Composition and Reactions of Atmospheric Aerosol Particles Print Composition and Reactions of Atmospheric Aerosol Particles Print Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

247

ATMOSPHERIC DENSITY ESTIMATION USING SATELLITE PRECISION ORBIT EPHEMERIDES  

E-Print Network [OSTI]

The current atmospheric density models are not capable enough to accurately model the atmospheric density, which varies continuously in the upper atmosphere mainly due to the changes in solar and geomagnetic activity. Inaccurate atmospheric modeling...

Arudra, Anoop Kumar

2011-04-22T23:59:59.000Z

248

Response of a tundra ecosystem to elevated atmospheric carbon dioxide and CO{sub 2}-induced climate change. Annual technical report  

SciTech Connect (OSTI)

Northern ecosystems contain up to 455 Gt of C in the soil active layer and upper permafrost, which is equivalent to approximately 60% of the carbon currently in the atmosphere as CO{sub 2}. Much of this carbon is stored in the soil as dead organic matter. Its fate is subject to the net effects of global change on the plant and soil systems of northern ecosystems. The arctic alone contains about 60 Gt C, 90% of which is present in the soil active layer and upper permafrost, and is assumed to have been a sink for CO{sub 2} during the historic and recent geologic past. Depending on the nature, rate, and magnitude of global environmental change, the arctic may have a positive or negative feedback on global change. Results from the DOE- funded research efforts of 1990 and 1991 indicate that the arctic has become a source of CO{sub 2} to the atmosphere. Measurements made in the Barrow, Alaska region during 1992 support these results. This change coincides with recent climatic variation in the arctic, and suggests a positive feedback of arctic ecosystems on atmospheric CO{sub 2} and global change. There are obvious potential errors in scaling plot level measurements to landscape, mesoscale, and global spatial scales. In light of the results from the recent DOE-funded research, and the remaining uncertainties regarding the change in arctic ecosystem function due to high latitude warming, a revised set of research goals is proposed for the 1993--94 year. The research proposed in this application has four principal aspects: (A) Long- term response of arctic plants and ecosystems to elevated atmospheric CO{sub 2}. (B) Circumpolar patterns of net ecosystem CO{sub 2} flux. (C) In situ controls by temperature and moisture on net ecosystem CO{sub 2} flux. (D) Scaling of CO{sub 2} flux from plot, to landscape, to regional scales.

Oechel, W.C.

1993-02-01T23:59:59.000Z

249

Extending the applicability of the eddy-covariance flux-measurement technique.  

E-Print Network [OSTI]

??Surface-atmosphere exchange of momentum, energy and atmospheric constituents affects the atmosphere – from alterations in local microclimates and mesoscale weather to climate modification. These exchange processes… (more)

Nordbo, Annika

2012-01-01T23:59:59.000Z

250

Atmospheric-pressure plasma jet  

SciTech Connect (OSTI)

A {gamma}-mode, resonant-cavity plasma discharge that can be operated at atmospheric pressure and near room temperature using 13.56 MHz rf power is described. Unlike plasma torches, the discharge produces a gas-phase effluent no hotter than 250 C at an applied power of about 300 W, and shows distinct non-thermal characteristics. In the simplest design, two concentric cylindrical electrodes are employed to generate a plasma in the annular region there between. A jet of long-lived metastable and reactive species that are capable of rapidly cleaning or etching metals and other materials is generated which extends up to 8 in. beyond the open end of the electrodes. Films and coatings may also be removed by these species. Arcing is prevented in the apparatus by using gas mixtures containing He, which limits ionization, by using high flow velocities, and by properly shaping the rf-powered electrode. Because of the atmospheric pressure operation, no ions survive for a sufficiently long distance beyond the active plasma discharge to bombard a workpiece, unlike low-pressure plasma sources and conventional plasma processing methods.

Selwyn, G.S.

1999-10-05T23:59:59.000Z

251

Time dependences of atmospheric Carbon dioxide fluxes  

E-Print Network [OSTI]

Understanding the lifetime of CO2 in the atmosphere is critical for predictions regarding future climate changes. A simple mass conservation analysis presented here generates tight estimations for the atmosphere's retention time constant. The analysis uses a leaky integrator model that combines the observed deficit (only less than 40% of CO2 produced from combustion of fossil fuels is actually retained in the atmosphere, while more than 60% is continuously shed) with the exponential growth of fossil fuel burning. It reveals a maximum characteristic time of less than 23 year for the transfer of atmospheric CO2 to a segregation sink. This time constant is further constrained by the rapid disappearance of 14C after the ban of atmospheric atomic bomb tests, which provides a lower limit of 18 years for this transfer. The study also generates evaluations of other CO2 fluxes, exchange time constants and volumes exchanged. Analysis of large harmonic oscillations of atmospheric CO2 concentration, often neglected in th...

DeSalvo, Riccardo

2014-01-01T23:59:59.000Z

252

Absolute calibration of imaging atmospheric Cherenkov telescopes  

E-Print Network [OSTI]

A calibrated laser pulse propagating through the atmosphere produces a flash of Rayleigh scattered light with an intensity that can be calculated very accurately when atmospheric conditions are good. This is used in a technique developed for the absolute calibration of ultra high energy cosmic ray fluorescence telescopes, and it can also be applied to imaging atmospheric Cherenkov telescopes (IACTs). In this paper we present the absolute calibration system being constructed and tested for the VERITAS project.

N. Shepherd; J. H. Buckley; O. Celik; J. Holder; S. LeBohec; H. Manseri; F. Pizlo; M. Roberts

2005-07-04T23:59:59.000Z

253

What we can learn from atmospheric neutrinos  

E-Print Network [OSTI]

Physics potential of future measurements of atmospheric neutrinos is explored. Observation of $\\Delta m^2_{21}$ driven sub-dominant effects and $\\theta_{13}$ driven large matter effects in atmospheric neutrinos can be used to study the deviation of $\\theta_{23}$ from maximality and its octant. Neutrino mass hierarchy can be determined extremely well due to the large matter effects. New physics can be constrained both in standard atmospheric neutrino experiments as well as in future neutrino telescopes.

Sandhya Choubey

2006-09-19T23:59:59.000Z

254

NREL: Process Development and Integration Laboratory - Atmospheric  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Processing Platform Capabilities Atmospheric Processing Platform Capabilities The Atmospheric Processing platform in the Process Development and Integration Laboratory offers powerful capabilities with integrated tools for depositing, processing, and characterizing photovoltaic materials and devices. In particular, this platform focuses on different methods to deposit ("write") materials onto a variety of substrates and then further process into optoelectronic materials using rapid thermal processing. You can read more on the rationale for developing this platform and its capabilities. Contact Maikel van Hest for more details on these capabilities. The Atmospheric Processing platform will allow deposition in any sequence and is applicable to activities in all Technology Roadmaps, which include

255

Earth and Atmospheric Sciences | More Science | ORNL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Nuclear Forensics Climate & Environment Sensors and Measurements Chemical & Engineering Materials Computational Earth Science Systems Modeling Geographic Information Science and Technology Materials Science and Engineering Mathematics Physics More Science Home | Science & Discovery | More Science | Earth and Atmospheric Sciences SHARE Earth and Atmospheric Sciences At ORNL, we combine our capabilities in atmospheric science, computational science, and biological and environmental systems science to focus in the cross-disciplinary field of climate change science. We use computer models to improve climate change predications and to measure the impact of global warming on the cycling of chemicals in earth systems. Our Climate Change Science Institute uses models to explore connections among atmosphere,

256

Atmospheric Pressure Discharges: Traveling Wave Plasma Sources  

Science Journals Connector (OSTI)

Microwave sustained, atmospheric pressure plasmas are finding an increasing number of applications ... interest in the developing and investigating of appropriate plasma sources [1, 2].

Z. Zakrzewski; M. Moisan

1999-01-01T23:59:59.000Z

257

12.815 Atmospheric Radiation, Fall 2005  

E-Print Network [OSTI]

Introduction to the physics of atmospheric radiation and remote sensing including use of computer codes. Radiative transfer equation including emission and scattering, spectroscopy, Mie theory, and numerical solutions. ...

Prinn, Ronald G.

258

Atmosphere to Electrons Program Overview Presentation  

Broader source: Energy.gov [DOE]

This presentation provides an introduction to the Atmosphere to Electrons (A2e) initiative, including objectives, program areas, and a general timeline of activities.

259

Response of global soil consumption of atmospheric methane to changes in atmospheric climate and nitrogen deposition  

E-Print Network [OSTI]

Soil consumption of atmospheric methane plays an important secondary role in regulating the atmospheric CH4 budget, next to the dominant loss mechanism involving reaction with the hydroxyl radical (OH). Here we used a ...

Zhuang, Qianlai

260

Response of global soil consumption of atmospheric methane to changes in atmospheric climate and nitrogen deposition  

E-Print Network [OSTI]

Response of global soil consumption of atmospheric methane to changes in atmospheric climate June 2013. [1] Soil consumption of atmospheric methane plays an important secondary role in regulating). Here we used a process-based biogeochemistry model to quantify soil consumption during the 20th and 21

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Atmospheric Science The Earth's atmosphere, a layered sphere of gas extending  

E-Print Network [OSTI]

division study the composition, structure, chemical, and physical processes of the Earth's atmosphere. The division's four interrelated groups focus on satellite, airborne, and ground-based observations processes such as atmospheric dynamics, chemistry, and radiation on Earth and other planets. Our atmospheric

Mojzsis, Stephen J.

262

Performance Engineering in the Community Atmosphere Model  

SciTech Connect (OSTI)

The Community Atmosphere Model (CAM) is the atmospheric component of the Community Climate System Model (CCSM) and is the primary consumer of computer resources in typical CCSM simulations. Performance engineering has been an important aspect of CAM development throughout its existence. This paper briefly summarizes these efforts and their impacts over the past five years.

Worley, P; Mirin, A; Drake, J; Sawyer, W

2006-05-30T23:59:59.000Z

263

Radio Frequency Signals in Jupiter's Atmosphere  

Science Journals Connector (OSTI)

...IMAGE OF A LARGE UPWARD ELECTRICAL-DISCHARGE...RINNERT K , HDB ATMOSPHERIC ELEC 27 ( 1995...MEASUREMENTS OF THE RF CHARACTERISTICS...JUPITER PLASMA-WAVE OBSERVATIONS...OBSERVATIONS OF UPPER ATMOSPHERIC OPTICAL FLASHES...Solar and thermal radiation...relatively large at the beginning...and about non-radiative...sensitive area of 6...

L. J. Lanzerotti; K. Rinnert; G. Dehmel; F. O. Gliem; E. P. Krider; M. A. Uman; J. Bach

1996-05-10T23:59:59.000Z

264

Predicting Future Atmospheric Carbon Dioxide Levels  

Science Journals Connector (OSTI)

...re-quired 5-Mhz bandwidth...interstellar plasma. For UHF frequencies of 500 Mhz, this amounts...chang-ing the atmospheric carbon dioxide...in the polar areas. Although...The shaded area indicates the...per-missible atmospheric CO2 level might...emission rates are largest between 2000...

U. Siegenthaler; H. Oeschger

1978-01-27T23:59:59.000Z

265

Some challenges of middle atmosphere data assimilation  

E-Print Network [OSTI]

Some challenges of middle atmosphere data assimilation 1234567 89A64BC7DEF72B4 8629EEC7C72DEEE5.1256/qj.05.87 Some challenges of middle atmosphere data assimilation By S. POLAVARAPU1,2, T. G. SHEPHERD2 Data assimilation is employed at operational weather forecast centres to combine measurements and model

Wirosoetisno, Djoko

266

Atmospheric muon background in the ANTARES detector  

E-Print Network [OSTI]

An evaluation of the background due to atmospheric muons in the ANTARES high energy neutrino telescope is presented. Two different codes for atmospheric shower simulation have been used. Results from comparisons between these codes at sea level and detector level are presented. The first results on the capability of ANTARES to reject this class of background are given.

S. Cecchini; E. Korolkova; A. Margiotta; L. Thompson

2005-10-28T23:59:59.000Z

267

The Radon Content of the Atmosphere  

Science Journals Connector (OSTI)

... MEASUREMENTS of the radon content of the atmosphere were made so long ago as 1905 by Eve1-2 in ... whole seemed to support the original suggestion of Elster and Geitel6 in 1903 that the radon in the atmosphere arises mainly from the soil. These workers noted that the highest ...

W. ANDERSON; W. V. MAYNEORD; R. C. TURNER

1954-09-04T23:59:59.000Z

268

United States Department Atmospheric and Biospheric Interactions  

E-Print Network [OSTI]

United States Department Atmospheric and Biospheric Interactions of Agriculture Forest Service coordinator. 1997. Atmospheric and biospheric interactions of gases and energy in the Pacific region century have caused a dramatic increase in global air pollution. This process has accelerated in the past

Standiford, Richard B.

269

Extremes and Atmospheric Data Eric Gilleland  

E-Print Network [OSTI]

Extremes and Atmospheric Data Eric Gilleland Research Applications Laboratory National Center for Atmospheric Research 2007-08 Program on Risk Analysis, Extreme Events and Decision Theory, opening workshop 16-19 September, North Carolina #12;Extremes · Interest in making inferences about large, rare, extreme phenomena

Gilleland, Eric

270

A SEARCH FOR MAGNESIUM IN EUROPA'S ATMOSPHERE  

SciTech Connect (OSTI)

Europa's tenuous atmosphere results from sputtering of the surface. The trace element composition of its atmosphere is therefore related to the composition of Europa's surface. Magnesium salts are often invoked to explain Galileo Near Infrared Mapping Spectrometer spectra of Europa's surface, thus magnesium may be present in Europa's atmosphere. We have searched for magnesium emission in the Hubble Space Telescope Faint Object Spectrograph archival spectra of Europa's atmosphere. Magnesium was not detected and we calculate an upper limit on the magnesium column abundance. This upper limit indicates that either Europa's surface is depleted in magnesium relative to sodium and potassium, or magnesium is not sputtered as efficiently resulting in a relative depletion in its atmosphere.

Hoerst, S. M. [Cooperative Institute for Research in Environmental Sciences, University of Colorado-Boulder, Boulder, CO (United States); Brown, M. E., E-mail: sarah.horst@colorado.edu [Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA (United States)

2013-02-20T23:59:59.000Z

271

Development and application of WRF3.3-CLM4crop to study of agriculture - climate interaction  

E-Print Network [OSTI]

plant growth and development on interannaul variability in mesoscale atmospheric simulations, Proceedings of the 10th (2000) International Offshore and

Lu, Yaqiong

2013-01-01T23:59:59.000Z

272

Electrical conductivity of plasmas of DB white dwarf atmospheres  

Science Journals Connector (OSTI)

......Electrical conductivity of plasmas of DB white dwarf atmospheres V. A. Sreckovic 1 Lj...applicable for the helium plasmas of DB white dwarf atmospheres described in Koester...study of DB white dwarf atmosphere plasma properties, helium plasmas......

V. A. Sreckovic; Lj. M. Ignjatovic; A. A. Mihajlov; M. S. Dimitrijevic

2010-07-21T23:59:59.000Z

273

Atomic Force and Scanning Electron Microscopy of Atmospheric Particles  

E-Print Network [OSTI]

conducted so as to characterize atmospheric aerosols from anthropogenic (pollution) and natural (sea saltAtomic Force and Scanning Electron Microscopy of Atmospheric Particles ZAHAVA BARKAY,1 * AMIT 69978, Israel KEY WORDS atmospheric aerosols; atomic force microscopy; scanning electron microscopy

Shapira, Yoram

274

Adjoint modeling for atmospheric pollution process sensitivity at regional scale  

E-Print Network [OSTI]

Adjoint modeling for atmospheric pollution process sensitivity at regional scale Laurent Menut; 0345 Atmospheric Composition and Structure: Pollution--urban and regional (0305); 3210 Mathematical: atmospheric pollution, tropospheric ozone, urban pollution peaks, adjoint modeling, sensitivity Citation

Menut, Laurent

275

Use of ARM observations and numerical models to determine radiative and latent heating profiles of mesoscale convective systems for general circulation models  

SciTech Connect (OSTI)

We examined cloud radar data in monsoon climates, using cloud radars at Darwin in the Australian monsoon, on a ship in the Bay of Bengal in the South Asian monsoon, and at Niamey in the West African monsoon. We followed on with a more in-depth study of the continental MCSs over West Africa. We investigated whether the West African anvil clouds connected with squall line MCSs passing over the Niamey ARM site could be simulated in a numerical model by comparing the observed anvil clouds to anvil structures generated by the Weather Research and Forecasting (WRF) mesoscale model at high resolution using six different ice-phase microphysical schemes. We carried out further simulations with a cloud-resolving model forced by sounding network budgets over the Niamey region and over the northern Australian region. We have devoted some of the effort of this project to examining how well satellite data can determine the global breadth of the anvil cloud measurements obtained at the ARM ground sites. We next considered whether satellite data could be objectively analyzed to so that their large global measurement sets can be systematically related to the ARM measurements. Further differences were detailed between the land and ocean MCS anvil clouds by examining the interior structure of the anvils with the satellite-detected the CloudSat Cloud Profiling Radar (CPR). The satellite survey of anvil clouds in the Indo-Pacific region was continued to determine the role of MCSs in producing the cloud pattern associated with the MJO.

Houze, Jr., Robert A. [University of Washington Dept. of Atmospheric Sciences

2013-11-13T23:59:59.000Z

276

Radon in atmospheric studies: a review  

SciTech Connect (OSTI)

The distribution of the isotopes of radon in space and time, their physical characteristics, and their behavior in the dynamics of the atmosphere have presented challenges for many decades. /sup 220/Rn, /sup 222/Rn and their daughters furnish a unique set of tracers for the study of transport and mixing processes in the atmosphere. Appropriate applications of turbulent diffusion theory yield general agreement with measured profiles. Diurnal and seasonal variations follow patterns set by consideration of atmospheric stability. /sup 222/Rn has been used successfully in recent studies of nocturnal drainage winds and cumulus convection. Good results have been obtained using /sup 222/Rn and its long-lived /sup 210/Pb daughter as tracers in the study of continent-to-ocean and ocean-to-continent air mass trajectories, /sup 220/Rn (thoron) because of its short half-life of only 55 seconds has been used to measure turbulent diffusion within the first few meters of the earth's surface and to study the influence of meteorological variables on the rate of exhalation from the ground. Radon daughters attach readily to atmospheric particulate matter which makes it possible to study these aerosols with respect to size spectra, attachment characteristics, removal by gravitation and precipitation, and residence times in the troposphere. The importance of ionization by radon and its daughters in the lower atmosphere and its effect on atmospheric electrical parameters is well known. Knowledge of the mobility and other characteristics of radon daughter ions has led to applications in the study of atmospheric electrical environments under fair weather and thunderstorm conditions and in the formation of condensation nuclei. The availability of increasingly sophisticated analytical tools and atmospheric measurement systems can be expected to add much to our understanding of radon and its daughters as trace components of the atmospheric environment in the years ahead.

Wilkening, M.

1981-01-01T23:59:59.000Z

277

Visualizing Storms from NCAR's Atmosphere Model at NERSC  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmosphere Model Visualizing Storms from NCAR's Atmosphere Model CCSM-sprabhat.png Global warming will likely change the statistics of tropical cyclones and hurricanes. In this...

278

Comparative Analysis of Urban Atmospheric Aerosol by Particle...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Analysis of Urban Atmospheric Aerosol by Particle-Induced X-ray Emission (PIXE), Proton Elastic Scattering Analysis Comparative Analysis of Urban Atmospheric Aerosol by...

279

Intense and Highly Energetic Atmospheric Pressure Plasma Jet Arrays.  

E-Print Network [OSTI]

??This thesis documents the efforts taken to produce highly ionized and concentrated atmospheric pressure plasma using an arrayed atmospheric pressure plasma jet (APPJ) system. The… (more)

Furmanski, John

2012-01-01T23:59:59.000Z

280

Fehner and Gosling, Atmospheric Nuclear Weapons Testing, 1951...  

Office of Environmental Management (EM)

Atmospheric Nuclear Weapons Testing, 1951-1963. Battlefield of the Cold War: The Nevada Test Site, Volume I Fehner and Gosling, Atmospheric Nuclear Weapons Testing, 1951-1963....

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

An Infrared Spectral Library for Atmospheric Environmental Monitoring...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Library for Atmospheric Environmental Monitoring. An Infrared Spectral Library for Atmospheric Environmental Monitoring. Abstract: Infrared (IR) spectroscopy is one of several...

282

MEMORANDUM OF UNDERSTANDING THE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION OF  

E-Print Network [OSTI]

national economies; Recognizing that significant interrelated, atmospheric, oceanic and terrestrial global, terrestrial and atmospheric ecosystem studies should focus on the structure and processes of the environment

283

Oxygen detected in atmosphere of Saturn's moon Dione  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxygen detected in atmosphere of Saturn's moon Dione Oxygen detected in atmosphere of Saturn's moon Dione Scientists and an international research team have announced discovery of...

284

Shortwave Transport in the Cloudy Atmosphere  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Shortwave Transport in the Cloudy Atmosphere Shortwave Transport in the Cloudy Atmosphere by Anomalous/Lévy Diffusion: New Diagnostics Using FORTÉ Lightning Data A. B. Davis Los Alamos National Laboratory Space & Remote Sensing Sciences Group Los Alamos, New Mexico D. M. Suszcynsky Los Alamos National Laboratory Space & Atmospheric Sciences Group Los Alamos, New Mexico A. Marshak National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland Introduction Anomalous photon diffusion can be described as an ad hoc modification of the popular 2-stream approximation, specifically the δ-Eddington/diffusion version, for monochromatic radiative transfer in a scattering plane-parallel atmosphere. In the physical picture that describes the standard diffusion (hence

285

Airborne Particles in Outdoor Air: Atmospheric Dust  

Science Journals Connector (OSTI)

For industrial products, in addition to the harmful effect like usual particles, the particular harmful effect of atmospheric dust especially metal particles is very large. For example, the light metal element...

Zhonglin Xu

2014-01-01T23:59:59.000Z

286

The Mars Atmospheric Constellation Observatory (MACO) Concept  

Science Journals Connector (OSTI)

The Mars Atmospheric Constellation Observatory (MACO) represents an innovative approach...2, and dust cycles together with the energy and momentum budgets. The mission concept is based on a constellation of satel...

E. R. Kursinski; W. Folkner; C. Zuffada…

2004-01-01T23:59:59.000Z

287

Uraninite and Fullerene in Atmospheric Particulates  

E-Print Network [OSTI]

incineration, uranium mining, and atmospheric testing of nuclearweapons-burning power plants typically contain very small amounts of uranium ( concentrations, the form of the uranium has been unknown. Using a variety of advanced electron microscopy

Utsunomiya, Satoshi

288

Atmospheric Plasma Effect on Cotton Nonwovens  

Science Journals Connector (OSTI)

Atmospheric Plasma Effect on Cotton Nonwovens ... (22) Plasma II is more effective than Plasma I with the ability to develop homogeneous plasmas and eliminate boundary-layer air effects. ...

Sudheer Jinka; Uday Turaga; Vinitkumar Singh; Rachel L. Behrens; Cenk Gumeci; Carol Korzeniewski; Todd Anderson; Rory Wolf; Seshadri Ramkumar

2014-07-22T23:59:59.000Z

289

Adaptive control for Mars atmospheric flight  

E-Print Network [OSTI]

landing accuracy requirements for a manned space vehicle make it necessary to ?y a controlled entry trajectory rather than a more robust ballistic entry trajectory used for some robotic missions. The large variations in Mars atmospheric properties make a...

Restrepo, Carolina Isabel

2009-05-15T23:59:59.000Z

290

Effects of Atmospheric Turbulence on Ballistic Testing  

Science Journals Connector (OSTI)

The effects of atmospheric turbulence on munition target scatter are determined from numerical simulations of ballistic trajectories through many realizations of realistic simulated turbulent wind fields. A technique is evaluated for correcting ...

Rod Frehlich; Robert Sharman; Charles Clough; Michael Padovani; Kelly Fling; Ward Boughers; W. Scott Walton

2008-05-01T23:59:59.000Z

291

Reducing the atmospheric impact of wet slaking  

SciTech Connect (OSTI)

Means of reducing the atmospheric emissions due to the wet slaking of coke are considered. One option, investigated here, is to remove residual active silt and organic compounds from the biologically purified wastewater sent for slaking, by coagulation and flocculation.

B.D. Zubitskii; G.V. Ushakov; B.G. Tryasunov; A.G.Ushakov [Kuznetsk Basin State Technical University, Kemerovo (Russian Federation)

2009-05-15T23:59:59.000Z

292

HYPERsensarium : an archive of atmospheric conditions  

E-Print Network [OSTI]

HYPERsensarium proposes a tangible interface of atmospheres for public experience through an archive of historical and projected weathers. While architecture's purpose has long been to act as the technical boundary between ...

Shaw, Kelly E. (Kelly Evelyn)

2013-01-01T23:59:59.000Z

293

Balanced Atmospheric Response to Squall Lines  

Science Journals Connector (OSTI)

When a Squall line propagates through the atmosphere, it not only excite transient gravity–inertia wave motion but also produces more permanent modifications to the large-scale balanced flow. Here we calculate this balanced response using the is ...

Wayne H. Schubert; Scott R. Fulton; Rolf F. A. Herttenstein

1989-08-01T23:59:59.000Z

294

Azores Global Atmosphere Monitoring Complex 1. INTRODUCTION  

E-Print Network [OSTI]

to the accuracy of European weather forecasts. Today, they provide a unique base for studies of atmospheric levels. Measurements in the free troposphere (FT) are particularly useful, because trace gas and particle

Honrath, Richard E.

295

Synopsis of Atmospheric Research under MAGS  

Science Journals Connector (OSTI)

Cold regions present a challenge to atmospheric and hydrologic research. Their low temperatures test the endurance of field workers and their instruments; their distance from large urban centers raises the cos...

Ming-ko Woo

2008-01-01T23:59:59.000Z

296

Overview of the National Atmospheric Release Advisory Center's urban research and development activities  

SciTech Connect (OSTI)

This presentation describes the tools and services provided by the National Atmospheric Release Advisory Center (NARAC) at Lawrence Livermore National Laboratory (LLNL) for modeling the impacts of airborne hazardous materials. NARAC provides atmospheric plume modeling tools and services for chemical, biological, radiological, and nuclear airborne hazards. NARAC can simulate downwind effects from a variety of scenarios, including fires, industrial and transportation accidents, radiation dispersal device explosions, hazardous material spills, sprayers, nuclear power plant accidents, and nuclear detonations. NARAC collaborates on radiological dispersion source terms and effects models with Sandia National Laboratories and the U.S. Nuclear Regulatory Commission. NARAC was designated the interim provider of capabilities for the Department of Homeland Security's Interagency Modeling and Atmospheric Assessment Center by the Homeland Security Council in April 2004. The NARAC suite of software tools include simple stand-alone, local-scale plume modeling tools for end-user's computers, and Web- and Internet-based software to access advanced modeling tools and expert analyses from the national center at LLNL. Initial automated, 3-D predictions of plume exposure limits and protective action guidelines for emergency responders and managers are available from the center in 5-10 minutes. These can be followed immediately by quality-assured, refined analyses by 24 x 7 on-duty or on-call NARAC staff. NARAC continues to refine calculations using updated on-scene information, including measurements, until all airborne releases have stopped and the hazardous threats are mapped and impacts assessed. Model predictions include the 3-D spatial and time-varying effects of weather, land use, and terrain, on scales from the local to regional to global. Real-time meteorological data and forecasts are provided by redundant communications links to the U.S. National Oceanic and Atmospheric Administration (NOAA), U.S. Navy, and U.S. Air Force, as well as an in-house mesoscale numerical weather prediction model. NARAC provides an easy-to-use Geographical Information System (GIS) for display of plume predictions with affected population counts and detailed maps, and the ability to export plume predictions to other standard GIS capabilities. Data collection and product distribution is provided through a variety of communication methods, including dial-up, satellite, and wired and wireless networks. Ongoing research and development activities will be highlighted. The NARAC scientific support team is developing urban parameterizations for use in a regional dispersion model (see companion paper by Delle Monache). Modifications to the numerical weather prediction model WRF to account for characteristics of urban dynamics are also in progress, as is boundary-layer turbulence model development for simulations with resolutions greater than 1km. The NARAC building-resolving computational fluid dynamics capability, FEM3MP, enjoys ongoing development activities such as the expansion of its ability to model releases of dense gases. Other research activities include sensor-data fusion, such as the reconstruction of unknown source terms from sparse and disparate observations.

Lundquist, J K; Sugiyama, G A; Nasstrom, J

2007-09-05T23:59:59.000Z

297

Atmospheric State, Cloud Microphysics and Radiative Flux  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Atmospheric thermodynamics, cloud properties, radiative fluxes and radiative heating rates for the ARM Southern Great Plains (SGP) site. The data represent a characterization of the physical state of the atmospheric column compiled on a five-minute temporal and 90m vertical grid. Sources for this information include raw measurements, cloud property and radiative retrievals, retrievals and derived variables from other third-party sources, and radiative calculations using the derived quantities.

Mace, Gerald

298

Air Activation Following an Atmospheric Explosion  

SciTech Connect (OSTI)

In addition to thermal radiation and fission products, nuclear explosions result in a very high flux of unfissioned neutrons. Within an atmospheric nuclear explosion, these neutrons can activate the various elemental components of natural air, potentially adding to the radioactive signature of the event as a whole. The goal of this work is to make an order-of-magnitude estimate of the total amount of air activation products that can result from an atmospheric nuclear explosion.

Lowrey, Justin D.; McIntyre, Justin I.; Prichard, Andrew W.; Gesh, Christopher J.

2013-03-13T23:59:59.000Z

299

Trace analysis of atmospheric organic bases  

E-Print Network [OSTI]

analysis of atmospheric organic bases were investigated; the study included (1) the analysis of submarine charcoal filter bed samples for nitrogen bases and (2) the use of metallic tetraphenylporphines (TPP) as specific adsorbents for atmospheric... gas chromatography (GC) and GC-mass spectrometry (GC-MS). The isolation procedure provided acceptable reproducibi lity in the determination of trace amounts of nitrogen bases in the submarine environment. Several metallic TPP adsorbents were...

Clark, Dwayne C.

2012-06-07T23:59:59.000Z

300

The Birth and Life of Our Atmosphere  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Birth and Life of Our Atmosphere Birth and Life of Our Atmosphere Nature Bulletin No. 554-A February 15, 1975 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation THE BIRTH AND LIFE OF OUR ATMOSPHERE In Bulletin No. 542-A we described the atmosphere that surrounds the earth, held there by the pull of gravity, including the canopy of air immediately above us. That canopy is responsible for our weather and climates, shields us from the killing rays of the sun, and furnishes substances necessary for all life: oxygen, nitrogen, carbon dioxide, and water vapor. Astronomers believe that none of the other planets -- excepting Mars, perhaps -- has an atmosphere anything like ours. The principal elements, free nitrogen (78 percent) and free oxygen (21 percent), apparently are rare in the universe. On the other hand, the earth's atmosphere contains only traces of free hydrogen and helium -- the two lightest gases -- whereas they are by far the most common elements elsewhere in the universe.

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Atmospheric chemistry impacts and feedbacks on the global carbon cycle  

E-Print Network [OSTI]

prediction. Issues to be addressed include the quantification of the impact of the atmospheric oxidation and the oxidative state of the atmosphere. The end goal is to create a model that can quantitatively predict is required to: Predict 3-D atmospheric CO2 production as a function of the CCSM3 atmospheric chemistry module

302

MET 600: Advanced Atmospheric Dynamics Air-sea interface  

E-Print Network [OSTI]

the atmosphere-ocean-land system is driven? #12;Upper-Ocean Currents How the atmosphere-ocean-land system/Salinity/Mass/Momentum Conservations #12; How the atmosphere-ocean-land system is driven? It is the sun that sustains all living beings on earth #12;Energy Conservation: Global Radiation Balance How the atmosphere-ocean-land system is driven

Fu, Joshua Xiouhua

303

Physics of Atmospheres and Oceans: Class Question Sheets COMPARATIVE PLANETARY ATMOSPHERES  

E-Print Network [OSTI]

is the mass of Jupiter and R its radius. Assuming this is all converted to thermal energy, give a crudePhysics of Atmospheres and Oceans: Class Question Sheets COMPARATIVE PLANETARY ATMOSPHERES PLA.1 for discounting the less popular of these? Show that the energy liberated during the collapse of a sphere of mass

Read, Peter L.

304

Matthias Florian Braun Rintheimer Str. 84 D-76131 Karlsruhe  

E-Print Network [OSTI]

). Publications M. Braun, S. Hack: Register Spilling and Live-Range Splitting for SSA-Form Programs. International Conference on Compiler Construction (CC 2009) M. Braun, S. Hack: Preference-Guided Register Assignment. International Conference on Compiler Construction (CC 2010) M. Braun, S. Buchwald, S. Hack, R. LeiÃ?a, C. Mallon

Snelting, Gregor

305

Atmospheric reactivity of gaseous dimethyl sulfate  

SciTech Connect (OSTI)

The atmospheric reactivity of dimethyl sulfate (DMS) with a series of atmospheric species has been investigated. Upper limits to the rate constants for the homogeneous gas-phase reactions of DMS with O{sub 3}, NH{sub 3}, and H{sub 2}O have been determined by using FTIR spectroscopy and are <1.4 {times} 10{sup {minus}21}, <1.5 {times} 10{sup {minus}21}, and <1.1 {times} 10{sup {minus}23} cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}, respectively. The reactivity of DMS toward ON radicals and Cl atoms has been determined by using relative rate techniques, and the rate constants for those reactions are <5 {times} 10{sup {minus}13} and (4.2 {plus minus} 0.5) {times} 10{sup {minus}13} cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}, respectively. These rate constants correspond to atmospheric lifetimes ranging from >23 days with respect to reaction with OH radicals to >33 years with respect to reaction with ozone. With the possible exception of its reaction with water, for which the calculated lifetime of DMS is >2 days, these results indicate that the atmospheric fate of DMS is not determined by its homogeneous gas-phase reactions with any of the atmosphere species studied.

Japar, S.M.; Wallington, T.J.; Andino, J.M.; Ball, J.C. (Ford Motor Co., Dearborn, MI (USA))

1990-03-01T23:59:59.000Z

306

Atmospheric and Climate Science | Argonne National Laboratory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric and Climate Science Atmospheric and Climate Science Argonne research in aerosols, micro-meteorology, remote sensing, and atmospheric chemistry combined with our scalable, portable, high-performance climate and weather applications offer a unique look at the complexities of a dynamic planet. Changes in climate can affect biodiversity, the cost of food, our health, and even whole economies. Argonne is developing computational models and tools designed to shed light on complex biological processes and their economic, social, and health effects. Research spans the molecular level to whole organisms and their interaction with climate, the ecosystem, and human activities. The goal is to improve our understanding of the world around us while increasing the accuracy of regional climate models to

307

Atmospheric Delta 14C Record from Wellington  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Carbon Isotopes » Carbon Isotopes » δ14C from Wellington Atmospheric δ14C Record from Wellington graphics Graphics data Data Investigators M.R. Manning, W.H. Melhuish National Institute of Water and Atmospheric Research, Ltd., Climate Division, Gracefield Road, Gracefield, P.O. Box 31-311, Lower Hutt, New Zealand Period of Record 1954-93 Methods Trays containing ~2 L of 5 normal NaOH carbonate-free solution are typically exposed for intervals of 1-2 weeks, and the atmospheric CO2 absorbed during that time is recovered by acid evolution. Considerable fractionation occurs during absorption into the NaOH solution, and the standard fractionation correction (Stuiver and Polach 1977) is used to determine a δ 14C value corrected to δ 13C = -25 per mil. Some samples reported here were taken using BaOH solution or with extended

308

atmospheric water vapor | OpenEI  

Open Energy Info (EERE)

atmospheric water vapor atmospheric water vapor Dataset Summary Description (Abstract): Monthly Average Solar Resource for 2-axis tracking concentrating collectors for Mexico, Central America, and the Caribbean Islands. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a concentrating collector, such as a dish collector, which tracks the sun continuously. Source NREL Date Released July 31st, 2006 (8 years ago) Date Updated October 30th, 2007 (7 years ago) Keywords atmospheric water vapor Carribean Islands Central America DNI GIS Mexico NREL GEF solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 247.8 KiB) text/csv icon Download Data (csv, 370.6 KiB) Quality Metrics Level of Review Some Review

309

Our Dusty Atmosphere | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Dusty Atmosphere Dusty Atmosphere Our Dusty Atmosphere September 6, 2011 - 4:26pm Addthis A heavy layer of air pollution, a mix of aerosol particles and vapors, obscures the view over Mexico City. Two studies by the Pacific Northwest National Laboratory show the importance of including the small-scale effects of aerosols in climate modeling. | Image courtesy of PNNL A heavy layer of air pollution, a mix of aerosol particles and vapors, obscures the view over Mexico City. Two studies by the Pacific Northwest National Laboratory show the importance of including the small-scale effects of aerosols in climate modeling. | Image courtesy of PNNL Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts? Researchers are developing a better understanding of the effects of

310

Our Dusty Atmosphere | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Our Dusty Atmosphere Our Dusty Atmosphere Our Dusty Atmosphere September 6, 2011 - 4:26pm Addthis A heavy layer of air pollution, a mix of aerosol particles and vapors, obscures the view over Mexico City. Two studies by the Pacific Northwest National Laboratory show the importance of including the small-scale effects of aerosols in climate modeling. | Image courtesy of PNNL A heavy layer of air pollution, a mix of aerosol particles and vapors, obscures the view over Mexico City. Two studies by the Pacific Northwest National Laboratory show the importance of including the small-scale effects of aerosols in climate modeling. | Image courtesy of PNNL Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts? Researchers are developing a better understanding of the effects of

311

Atmospheric Radiation Measurement Climate Research Facility | Argonne  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Radiation Measurement Climate Research Facility Atmospheric Radiation Measurement Climate Research Facility Argonne scientists study climate change 1 of 22 Argonne scientists study climate change The U.S. Department of Energy's Office of Science provided $60 million in ARRA funding for climate research to the Atmospheric Radiation Measurement (ARM) Climate Research Facility, a DOE national user facility that has been operating climate observing sites around the world for nearly two decades. These sites help scientists study clouds and their influence on the sun's radiant energy, which heats our planet. Above is one of the purchases: the Vaisala Present Weather Detector. It optically measures visibility, present weather, precipitation intensity, and precipitation type. It provides a measure of current weather conditions by combining measurements from three

312

Detection of an Extrasolar Planet Atmosphere  

E-Print Network [OSTI]

We report high precision spectrophotometric observations of four planetary transits of HD 209458, in the region of the sodium resonance doublet at 589.3 nm. We find that the photometric dimming during transit in a bandpass centered on the sodium feature is deeper by (2.32 +/- 0.57) x 10^{-4} relative to simultaneous observations of the transit in adjacent bands. We interpret this additional dimming as absorption from sodium in the planetary atmosphere, as recently predicted from several theoretical modeling efforts. Our model for a cloudless planetary atmosphere with a solar abundance of sodium in atomic form predicts more sodium absorption than we observe. There are several possibilities that may account for this reduced amplitude, including reaction of atomic sodium into molecular gases and/or condensates, photoionization of sodium by the stellar flux, a low primordial abundance of sodium, or the presence of clouds high in the atmosphere.

David Charbonneau; Timothy M. Brown; Robert W. Noyes; Ronald L. Gilliland

2001-11-28T23:59:59.000Z

313

A Community Atmosphere Model with Superparameterized Clouds  

SciTech Connect (OSTI)

In 1999, National Center for Atmospheric Research (NCAR) scientists Wojciech Grabowski and Piotr Smolarkiewicz created a "multiscale" atmospheric model in which the physical processes associated with clouds were represented by running a simple high-resolution model within each grid column of a lowresolution global model. In idealized experiments, they found that the multiscale model produced promising simulations of organized tropical convection, which other models had struggled to produce. Inspired by their results, Colorado State University (CSU) scientists Marat Khairoutdinov and David Randall created a multiscale version of the Community Atmosphere Model (CAM). They removed the cloud parameterizations of the CAM, and replaced them with Khairoutdinov's high-resolution cloud model. They dubbed the embedded cloud model a "super-parameterization," and the modified CAM is now called the "SP-CAM." Over the next several years, many scientists, from many institutions, have explored the ability of the SP-CAM to simulate tropical weather systems, the day-night changes of precipitation, the Asian and African monsoons, and a number of other climate processes. Cristiana Stan of the Center for Ocean-Land-Atmosphere Interactions found that the SP-CAM gives improved results when coupled to an ocean model, and follow-on studies have explored the SP-CAM's utility when used as the atmospheric component of the Community Earth System Model. Much of this research has been performed under the auspices of the Center for Multiscale Modeling of Atmospheric Processes, a National Science Foundation (NSF) Science and Technology Center for which the lead institution is CSU.

Randall, David; Branson, Mark; Wang, Minghuai; Ghan, Steven J.; Craig, Cheryl; Gettelman, A.; Edwards, Jim

2013-06-18T23:59:59.000Z

314

Atmospheric Pressure Deposition for Electrochromic Windows  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Pressure Deposition Atmospheric Pressure Deposition for Electrochromic Windows TDM - Karma Sawyer Robert C. Tenent National Renewable Energy Laboratory robert.tenent@nrel.gov 303-384-6775 4/4/2013 Insulating Glass Unit (IGU) Glass Transparent Conductor (TC) Active Electrode Counter Electrode Ion Conductor 2 | Building Technologies Office eere.energy.gov Purpose and Objectives * Expense - Current market price of $50-$100/ft 2 - Projections indicate under $20/ft 2 needed - A new production paradigm is required * Aesthetics - Architects hesitant to adopt "smurf glass"

315

Atmospheric Pressure Deposition for Electrochromic Windows  

Broader source: Energy.gov (indexed) [DOE]

Atmospheric Pressure Deposition Atmospheric Pressure Deposition for Electrochromic Windows TDM - Karma Sawyer Robert C. Tenent National Renewable Energy Laboratory robert.tenent@nrel.gov 303-384-6775 4/4/2013 Insulating Glass Unit (IGU) Glass Transparent Conductor (TC) Active Electrode Counter Electrode Ion Conductor 2 | Building Technologies Office eere.energy.gov Purpose and Objectives * Expense - Current market price of $50-$100/ft 2 - Projections indicate under $20/ft 2 needed - A new production paradigm is required * Aesthetics - Architects hesitant to adopt "smurf glass"

316

A sun glint heliostat for atmospheric spectroscopy  

Science Journals Connector (OSTI)

A simple arrangement based upon sun glint the brilliant image of the sun behind a convex reflecting surface is used to produce a nearly stationary image of the sun. Using a telescopemirror this image is directed into a spectrometer and is spectrally analyzed for the purpose of remote sensing of trace species in our atmosphere. Typical data using a reflecting sphere are reported and discussed qualitatively in relation to the atmospheric absorbers between the sun and detector. The over?all uses of the system are described and some cautions concerning its limitations are discussed. Alternate geometries and possible variations of the system are described.

A. E. S. Green; R. A. Sutherland; G. Ganguli

1974-01-01T23:59:59.000Z

317

Controlled atmosphere for fabrication of cermet electrodes  

DOE Patents [OSTI]

A process for making an inert electrode composite wherein a metal oxide and a metal are reacted in a gaseous atmosphere at an elevated temperature of at least about 750.degree. C. The metal oxide is at least one of the nickel, iron, tin, zinc and zirconium oxides and the metal is copper, silver, a mixture of copper and silver or a copper-silver alloy. The gaseous atmosphere has an oxygen content that is controlled at about 5-3000 ppm in order to obtain a desired composition in the resulting composite.

Ray, Siba P. (Murrysville, PA); Woods, Robert W. (New Kensington, PA)

1998-01-01T23:59:59.000Z

318

Phase transition in a chain of quantum vortices Institut fur Theoretische Festkorperphysik, Universitat Karlsruhe, D-76128 Karlsruhe, Germany  

E-Print Network [OSTI]

. In the commensurate phase an elementary excitation is a soliton with energy separated from the ground state quantum; the propagation of solitons leads to a finite resistance of the array. We find the dependence of the resistance activation energy on the magnetic field and parameters of the Josephson array. This energy

van Oudenaarden, Alexander

319

Cooperative Institute for Research in the Atmosphere  

E-Print Network [OSTI]

#12;2 Cooperative Institute for Research in the Atmosphere Contents 3 Heavy Snowfall regulations designed to elimi- nate human-caused haze in Big Bend and 155 other National Parks), and the Electric Power Research Institute (EPRI), among others. In support of BRAVO, NPS and CIRA scientists

Collett Jr., Jeffrey L.

320

Kinetics of Non-Thermal Atmospheric Pressure  

E-Print Network [OSTI]

Kinetics of Non-Thermal Atmospheric Pressure Plasmas Alexander Fridman · Microdischarge Interaction and Structuring in Dielectric Barrier Discharges · Kinetics of Blood Coagulation in Plasma · Surface Wound wire Area of DBD plasma region: ~104cm2 #12;7 Microdischarge Patterning (2D) R22 R23 R24 R26 R27 R28

Kaganovich, Igor

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Sputtering and heating of Titan's upper atmosphere  

Science Journals Connector (OSTI)

...Although, the plasma energy deposition...viable, but the plasma heating is inadequate...be true: another non-thermal process must be active...composition of the ambient plasma near Titan's orbit...used to test the atmospheric loss rate. Prior...

2009-01-01T23:59:59.000Z

322

THE LOWER SOLAR ATMOSPHERE ROBERT J. RUTTEN  

E-Print Network [OSTI]

of solar composition studies. The first column labeled "radial" describes the overall structure of the workTHE LOWER SOLAR ATMOSPHERE ROBERT J. RUTTEN Sterrekundig Instituut, Postbus 80 000, NL­3508 TA, Utrecht, The Netherlands Abstract. This "rapporteur" report discusses the solar photosphere and low

Rutten, Rob

323

Atmospheric chemistry of gaseous diethyl sulfate  

SciTech Connect (OSTI)

The atmospheric reactivity of diethyl sulfate (DES) has been investigated. Upper limits to the rate constants (in cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}) for the homogeneous gas-phase reactions of DES with O{sub 3}, NH{sub 3}, and H{sub 2}O have been determined by FTIR spectroscopy and are <3.4 {times} 10{sup {minus}21}, <1.4 {times} 10{sup {minus}21}, and {le}2.3 {times} 10{sup {minus}23}, respectively. The reactivity of DES toward OH radicals and Cl atoms has been determined by using relative rate techniques. These rate constants correspond to atmospheric lifetimes ranging from {ge}1 day with respect to reaction with water to >12 years with respect to ozone. With the possible exception of its reaction with water, these results indicate that the atmospheric fate of DES within an urban air parcel is not determined by its homogeneous gas-phase reactions with any of the atmospheric species studied. No evidence has been found for the formation of DES or related compounds during the ozonolysis of olefins in the presence of SO{sub 2} and ethanol.

Japar, S.M.; Wallington, T.J.; Andino, J.M.; Ball, J.C. (Ford Motor Co., Dearborn, MI (USA))

1990-06-01T23:59:59.000Z

324

METEOROLOGICAL Journal of Atmospheric and Oceanic Technology  

E-Print Network [OSTI]

that there is no10 isotopic fractionation between the liquid phase and the generated moist "air". The water11., A microdrop generator for the calibration of.... 1. Introduction1 2 Water vapor is a key element in the globalAMERICAN METEOROLOGICAL SOCIETY Journal of Atmospheric and Oceanic Technology EARLY ONLINE RELEASE

Paris-Sud XI, Université de

325

Wind Structure in the Atmospheric Boundary Layer  

Science Journals Connector (OSTI)

13 May 1971 research-article Wind Structure in the Atmospheric Boundary Layer...semi-empirical laws for the variation of mean wind speed with height and for the statistical...provide some useful ordering of the mean wind profile characteristics in relation to...

1971-01-01T23:59:59.000Z

326

TETTERSTO NATURE Pre-industrial atmospheric  

E-Print Network [OSTI]

, starting with the Greek and Roman cultures3'4.The cumulative deposition from anthropogenicsourcesin preTETTERSTO NATURE Pre-industrial atmospheric lead contamination detected in Swedish lake sediments for pre-industrial atmospherictrace-metalcontaminationt''it is commonlyassumed that air pollution

Short, Daniel

327

Doctoral Programs Atmospheric, Oceanic & Space Sciences  

E-Print Network [OSTI]

Professor; Recipient, Teaching Innovation Prize; Michigan Distinguished Professor of the Year Allison Mission to Comet 67P / Churyumov- Gerasimenko · Solar and Heliospheric Physics Group · STEREO Mission,OceanicandSpaceSciences Atmospheric, Oceanic & Space Sciences University of Michigan Space Research Building 2455 Hayward Street Ann

Eustice, Ryan

328

Doctoral Programs Atmospheric, Oceanic & Space Sciences  

E-Print Network [OSTI]

University of Michigan Space Research Building 2455 Hayward Street Ann Arbor, MI 48109-2143 aoss Katherine E. White, Ann Arbor ©The Regents of the University of Michigan Research areas Atmospheric Science/Thermosphere Physics Planetary Magnetospheres Solar & Heliospheric Physics Space Weather Aeronomy For Faculty involved

Eustice, Ryan

329

1 - Solubility of Atmospheric Gases in Freshwater  

Science Journals Connector (OSTI)

This chapter presents tabular information on the standard air saturation concentration (moist air at 1 atm) for oxygen, nitrogen, argon, and carbon dioxide gas in terms of ?mol/kg, mg/L, and mL/L; and in terms of Bunsen coefficients L real gas/(L atm); mg real gas/(L mmHg); and mg real gas/(L kPa) for 0–40°C and freshwater conditions. Because the mole fraction of carbon dioxide in the atmosphere is changing, solubility information is provided for 2010 (390 ?atm) and for 2030 (440 ?atm) based on projected atmospheric values. Tabular information is also provided to allow computation of standard air saturation concentrations of carbon dioxide gas directly as a function of atmospheric mole fraction. Conversion factors are presented to convert these concentrations to other commonly used units. Equations and tabular information are provided to compute air saturation concentration for moist air at local barometric pressure for the four atmospheric gases. Because of the importance of dissolved oxygen in biological processes, the air solubility concentration is also presented as a function of elevation for both metric and English elevations. Equations and tabular information are provided to allow conversion of concentrations in mg/L to partial pressures in mmHg. Sample problems are included for representative examples. Keywords gas solubility, freshwater, oxygen, nitrogen, argon, carbon dioxide, standard air solubility, air solubility, Bunsen coefficients, partial pressures

John Colt

2012-01-01T23:59:59.000Z

330

Introducing Research College of Oceanic & Atmospheric Sciences  

E-Print Network [OSTI]

.coas.oregonstate.edu WECOMA WECOMA Coll ege of Oceanic & Atmospheric Scie nces OREGON STATE UNIVERSITY in the O cean currents, to the south in summer and generally to the north in winter, create ocean currents. The strong summertime and the topography of the ocean floor influence the east-west cross-shelf currents. Understanding and being able

Pierce, Stephen

331

Introducing Research College of Oceanic & Atmospheric Sciences  

E-Print Network [OSTI]

WECOMA Coll ege of Oceanic & Atmospheric Scie nces OREGON STATE UNIVERSITY in the O cean currents introduced by man (e.g., pollutants). Knowledge of upper-ocean currents is important for navigation and for search and rescue. The ocean currents off Oregon vary seasonally and can also vary from year to year

Barth, Jack

332

Nonlinear waves in the solar atmosphere  

Science Journals Connector (OSTI)

...the intended application to solar physics deserves great effort...waves and oscillations in the solar plasma. Figure 1 A typical...distance from the base of the solar atmosphere. The quantity is...The (a), (b) and (c) panels correspond to z=0, z=z...

2006-01-01T23:59:59.000Z

333

White Dwarf Spectra and Atmosphere Models  

E-Print Network [OSTI]

We describe the spectral classification of white dwarfs and some of the physical processes important for their understanding. In the major part of this paper we discuss the input physics and computational methods for one of the most widely used stellar atmosphere codes for white dwarfs.

Detlev Koester

2008-12-02T23:59:59.000Z

334

Ch.6 Atmospheric and Oceanic Circulations  

E-Print Network [OSTI]

difference in air pressure. #12;Measure Air Pressure-- Mercury Barometer ·Seal the glass tube at one end of latitude. Meridional flows Zonal flows #12;Learning Objective Two: Air Pressure #12;Air Pressure Atmospheric pressure is the force per unit area exerted against a surface by the weight of air above

Pan, Feifei

335

Stereographic displays of atmospheric model data  

Science Journals Connector (OSTI)

A system has been developed to display color stereographic time-lapsed sequences of outputs of three-dimensional atmospheric models. Contour lines and wind vectors derived from a model can be overlaid on a geostationary satellite image or displayed with ... Keywords: Computer graphics, Meteorology, Modeling display, Stereography

Mary desJardins; A. Frederick Hasler

1980-07-01T23:59:59.000Z

336

The Magnetic Field in the Solar Atmosphere  

E-Print Network [OSTI]

This publication provides an overview of magnetic fields in the solar atmosphere with the focus lying on the corona. The solar magnetic field couples the solar interior with the visible surface of the Sun and with its atmosphere. It is also responsible for all solar activity in its numerous manifestations. Thus, dynamic phenomena such as coronal mass ejections and flares are magnetically driven. In addition, the field also plays a crucial role in heating the solar chromosphere and corona as well as in accelerating the solar wind. Our main emphasis is the magnetic field in the upper solar atmosphere so that photospheric and chromospheric magnetic structures are mainly discussed where relevant for higher solar layers. Also, the discussion of the solar atmosphere and activity is limited to those topics of direct relevance to the magnetic field. After giving a brief overview about the solar magnetic field in general and its global structure, we discuss in more detail the magnetic field in active regions, the quie...

Wiegelmann, Thomas; Solanki, Sami K

2014-01-01T23:59:59.000Z

337

Development of an Adjoint for a Complex Atmospheric Model, the ARPS, using TAF  

E-Print Network [OSTI]

, such as operational weather predictions models, pose challenges on the applicability of AD tools. We report- ational weather prediction models are much more complex, and the problem sizes tend to be much larger as a system for mesoscale and storm-scale numerical weather prediction as well as a wide range of idealized

Gao, Jidong

338

Frigatebird behaviour at the ocean–atmosphere interface: integrating animal behaviour with multi-satellite data  

Science Journals Connector (OSTI)

...animal behaviour with multi-satellite data Silvia De Monte 1 2 3...nonlinear analysis of multi-satellite data. We find that frigatebirds...often referred to as the ocean weather and covers the mesoscale and...related to phytoplankton. Satellite, in situ and model data show...

2012-01-01T23:59:59.000Z

339

Indoor atmospheric corrosion of conventional weathering steels in the tropical atmosphere of Panama  

Science Journals Connector (OSTI)

One year indoor atmospheric corrosion examinations have been carried out on two conventional weathering steels for a year, at two test sites, Tocumen and Sherman Breakwater in Panama. They are environmentally cla...

Juan A. Jaén; Josefina Iglesias; Olga Adames

2014-01-01T23:59:59.000Z

340

Representing El Niño in Coupled Ocean–Atmosphere GCMs: The Dominant Role of the Atmospheric Component  

Science Journals Connector (OSTI)

A systematic modular approach to investigate the respective roles of the ocean and atmosphere in setting El Niño characteristics in coupled general circulation models is presented. Several state-of-the-art coupled models sharing either the same ...

E. Guilyardi; S. Gualdi; J. Slingo; A. Navarra; P. Delecluse; J. Cole; G. Madec; M. Roberts; M. Latif; L. Terray

2004-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

ARM - Field Campaign - Tropical Ocean Global Atmosphere Coupled  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govCampaignsTropical Ocean Global Atmosphere Coupled Ocean-Atmosphere govCampaignsTropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Exp Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Exp 1992.07.11 - 1993.02.28 Lead Scientist : Chuck Long Data Availability Final data available. For data sets, see below. Summary IOP completed. Description The Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Experiment (TOGA-COARE) was conducted to better understand the structure of the coupled system of the warm pool of the western Pacific Ocean. Hundreds of participants from dozens of countries took part in this experiment from November 1, 1992 through February 28, 1993. Campaign Data Sets

342

BIOSIGNATURE GASES IN H?-DOMINATED ATMOSPHERES ON ROCKY EXOPLANETS  

E-Print Network [OSTI]

Super-Earth exoplanets are being discovered with increasing frequency and some will be able to retain stable H2-dominated atmospheres. We study biosignature gases on exoplanets with thin H2 atmospheres and habitable surface ...

Seager, Sara

343

Faculty-Led Study Abroad in Atmospheric Science Education  

Science Journals Connector (OSTI)

For several years the University of Wisconsin–Milwaukee's Atmospheric Science group has offered the faculty-led study abroad program Mexico: Air Pollution and Ancient Cultures. In this course, open to both atmospheric science majors and nonmajors as well ...

Jonathan D. W. Kahl; Julia G. Cerón

2014-02-01T23:59:59.000Z

344

Trends and inferred emissions of atmospheric high molecular weight perfluorocarbons  

E-Print Network [OSTI]

Atmospheric observations and atmospheric observation-based global emission estimates are presented for the five high molecular weight perfluorocarbons (PFCs): decafluorobutane (C 4 F 1 0 ), dodecafluoropentane (C5 F1 2 ), ...

Ivy, Diane Jean

2012-01-01T23:59:59.000Z

345

Muon diagnostics of the Earth’s atmosphere and magnetosphere  

Science Journals Connector (OSTI)

A method of distant monitoring of the Earth’s magnetosphere and atmosphere is described, which is based on the close correlation between the modulations in the flux of atmospheric muons detected at the Earth’s su...

N. S. Barbashina; V. V. Borog…

2007-07-01T23:59:59.000Z

346

COLLOQUIUM: The Alfvénic Motions of the Sun's Outer Atmosphere...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

8, 2013, 4:15pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: The Alfvnic Motions of the Sun's Outer Atmosphere Scott McIntosh National Center for Atmospheric Research (NCAR)...

347

Land-atmosphere interaction and radiative-convective equilibrium  

E-Print Network [OSTI]

I present work on several topics related to land-atmosphere interaction and radiative-convective equilibrium: the first two research chapters invoke ideas related to land-atmosphere interaction to better understand ...

Cronin, Timothy (Timothy Wallace)

2014-01-01T23:59:59.000Z

348

Hadley Cell Dynamics in a Virtually Dry Snowball Earth Atmosphere  

Science Journals Connector (OSTI)

The Hadley cell of a virtually dry snowball Earth atmosphere under equinox insolation is studied in a comprehensive atmospheric general circulation model. In contrast to the Hadley cell of modern Earth, momentum transport by dry convection, which ...

Aiko Voigt; Isaac M. Held; Jochem Marotzke

2012-01-01T23:59:59.000Z

349

Atmospheric Crude Oil Distillation Operable Capacity  

Gasoline and Diesel Fuel Update (EIA)

(Barrels per Calendar Day) (Barrels per Calendar Day) Data Series: Total Number of Operable Refineries Number of Operating Refineries Number of Idle Refineries Atmospheric Crude Oil Distillation Operable Capacity (B/CD) Atmospheric Crude Oil Distillation Operating Capacity (B/CD) Atmospheric Crude Oil Distillation Idle Capacity (B/CD) Atmospheric Crude Oil Distillation Operable Capacity (B/SD) Atmospheric Crude Oil Distillation Operating Capacity (B/SD) Atmospheric Crude Oil Distillation Idle Capacity (B/SD) Vacuum Distillation Downstream Charge Capacity (B/SD) Thermal Cracking Downstream Charge Capacity (B/SD) Thermal Cracking Total Coking Downstream Charge Capacity (B/SD) Thermal Cracking Delayed Coking Downstream Charge Capacity (B/SD Thermal Cracking Fluid Coking Downstream Charge Capacity (B/SD) Thermal Cracking Visbreaking Downstream Charge Capacity (B/SD) Thermal Cracking Other/Gas Oil Charge Capacity (B/SD) Catalytic Cracking Fresh Feed Charge Capacity (B/SD) Catalytic Cracking Recycle Charge Capacity (B/SD) Catalytic Hydro-Cracking Charge Capacity (B/SD) Catalytic Hydro-Cracking Distillate Charge Capacity (B/SD) Catalytic Hydro-Cracking Gas Oil Charge Capacity (B/SD) Catalytic Hydro-Cracking Residual Charge Capacity (B/SD) Catalytic Reforming Charge Capacity (B/SD) Catalytic Reforming Low Pressure Charge Capacity (B/SD) Catalytic Reforming High Pressure Charge Capacity (B/SD) Catalytic Hydrotreating/Desulfurization Charge Capacity (B/SD) Catalytic Hydrotreating Naphtha/Reformer Feed Charge Cap (B/SD) Catalytic Hydrotreating Gasoline Charge Capacity (B/SD) Catalytic Hydrotreating Heavy Gas Oil Charge Capacity (B/SD) Catalytic Hydrotreating Distillate Charge Capacity (B/SD) Catalytic Hydrotreating Kerosene/Jet Fuel Charge Capacity (B/SD) Catalytic Hydrotreating Diesel Fuel Charge Capacity (B/SD) Catalytic Hydrotreating Other Distillate Charge Capacity (B/SD) Catalytic Hydrotreating Residual/Other Charge Capacity (B/SD) Catalytic Hydrotreating Residual Charge Capacity (B/SD) Catalytic Hydrotreating Other Oils Charge Capacity (B/SD) Fuels Solvent Deasphalting Charge Capacity (B/SD) Catalytic Reforming Downstream Charge Capacity (B/CD) Total Coking Downstream Charge Capacity (B/CD) Catalytic Cracking Fresh Feed Downstream Charge Capacity (B/CD) Catalytic Hydro-Cracking Downstream Charge Capacity (B/CD) Period:

350

Surface Nanostructuring of Polysulfone Membranes by Atmospheric Pressure Plasma-Induced Graft Polymerization (APPIGP)  

E-Print Network [OSTI]

large substrates. Various atmospheric plasma sources arePolymerization The atmospheric plasma source used in thisby Remote Atmospheric- Pressure Plasma. Ieee Transactions on

Kim, Soo Min

2013-01-01T23:59:59.000Z

351

Sensitive multi-photon nonlinear laser spectroscopic methods for isotope analysis in atmospheric and environmental applications  

E-Print Network [OSTI]

measurements in atmospheric pressure plasma. However, nonean atmospheric radio-frequency inductively coupled plasma (atmospheric atomizer. Also, the inductively coupled plasma

Lyons, Wendy Jean

2009-01-01T23:59:59.000Z

352

E-Print Network 3.0 - atmospheric physics Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for: atmospheric physics Page: << < 1 2 3 4 5 > >> 1 Cloud Physics and Atmospheric Chemistry http:cpac.pku.edu.cn Summary: Cloud Physics and Atmospheric Chemistry http:...

353

E-Print Network 3.0 - atmospheric aerosol size Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for about ten percent of all aerosols in the atmosphere. We... , can actually absorb solar energy and warm the atmosphere. Atmospheric aerosols are very important... by...

354

Dispersion relation for magnetosonic waves within the upper atmospheric plasma  

Science Journals Connector (OSTI)

The dispersion relation for magnetosonic waves within the upper atmospheric plasma has been derived. The result can be...

S. S. De; Bithika Ghosh; Manasi Mal; B. Ghosh

1990-01-01T23:59:59.000Z

355

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE  

E-Print Network [OSTI]

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE: Insights from a global 3D land.S. National Science Foundation Atmospheric Chemistry Program #12;FROM ATMOSPHERE TO FISH: MERCURY RISING Ice core from Wyoming [Schuster et al., ES&T 2002] Mercury deposition has increased by 300% since

Selin, Noelle Eckley

356

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE  

E-Print Network [OSTI]

MERCURY IN THE ATMOSPHERE, BIOSPHERE, AND POLICY SPHERE: Insights from global modeling Noelle Atmospheric Chemistry Program #12;FROM ATMOSPHERE TO FISH: MERCURY RISING Ice core from Wyoming [Schuster et al., ES&T 2002] Mercury deposition has increased by 300% since industrialization Major anthropogenic

Selin, Noelle Eckley

357

The nature of moss and lower atmospheric seismology  

Science Journals Connector (OSTI)

...TR (i.e. thermal interface between...perform lower atmospheric seismology...chromospheric plasma upwards at...despite the atmospheric seeing deformations...EUV-emitting plasma in its vicinity...tunnel some non-propagating...examples of lower atmospheric seismology...in the solar plasma. Figure 1...

2006-01-01T23:59:59.000Z

358

Nonequilibrium atmospheric secondary organic aerosol formation and growth  

Science Journals Connector (OSTI)

...Mexico City area are shown...inorganic atmospheric aerosols...2005 ) A large organic aerosol source...photochemical and thermal studies of...Characteristic Group Frequencies—Tables and...particle thermal speed...phase-equilibrium in the atmospheric system: Aerosol...Support, Non-U.S...Determination by plasma-based...implications for atmospheric chemistry...2002) A thermal disso-ciation...

Véronique Perraud; Emily A. Bruns; Michael J. Ezell; Stanley N. Johnson; Yong Yu; M. Lizabeth Alexander; Alla Zelenyuk; Dan Imre; Wayne L. Chang; Donald Dabdub; James F. Pankow; Barbara J. Finlayson-Pitts

2012-01-01T23:59:59.000Z

359

New consideration of atmospheric refraction in laser ranging data  

Science Journals Connector (OSTI)

......atmosphere near the Earth. Atmospheric refraction increases...function based on the generator function method proposed...incorporated with the generator function theory and...which P is the total atmospheric pressure in millibars...partial pressure of water vapour in millibars......

Haojian Yan; Guangli Wang

1999-08-11T23:59:59.000Z

360

Refined correlations between atmospheric and rapid polar motion excitations  

Science Journals Connector (OSTI)

......experiments, the atmospheric or geodetic excitation...a random number generator, and is regenerated...1990. Global water storage and polar...C.R., 1993. Atmospheric excitation computations...polar motion by atmospheric angular momentum...Global surface water-induced Rosen......

T. C. Stieglitz; S. R. Dickman

1999-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Integrated Water, Atmosphere, Ecosystems, Education and Research Program  

E-Print Network [OSTI]

I-WATER Integrated Water, Atmosphere, Ecosystems, Education and Research Program #12;I-WATER management decisions? II--WATERWATER Integrated Water, Atmosphere,Integrated Water, Atmosphere, Ecosystems resource issues. #12;I-WATER: Vision and Goals ¤ I-WATER will provide a new generation of Ph.D. students

362

Short-term production and synoptic influences on atmospheric 7  

E-Print Network [OSTI]

Short-term production and synoptic influences on atmospheric 7 Be concentrations Ilya G. Usoskin,1; published 21 March 2009. [1] Variations of the cosmogenic radionuclide 7 Be in the global atmosphere the variations in the 7 Be concentration in the atmosphere for the period from 1 January to 28 February 2005

363

Numerical Analysis of Flow Characteristics of An Atmospheric Plasma Torch  

E-Print Network [OSTI]

Numerical Analysis of Flow Characteristics of An Atmospheric Plasma Torch You-Jae Kim, J.-G. HanCheon-dong, Suwon 440-746, KOREA Abstract The atmospheric plasma is regarded as an effective method for surface mathematical models used for simulating plasma characteristics inside an atmospheric plasma torch is carried

Paris-Sud XI, Université de

364

College of Earth, Ocean, and Atmospheric Sciences Oregon State University  

E-Print Network [OSTI]

College of Earth, Ocean, and Atmospheric Sciences Oregon State University 104 CEOAS Admin Bldg Announcement College of Earth, Ocean, and Atmospheric Sciences Posting 0012926 ASSISTANT PROFESSOR, Earth Systems History The College of Earth, Ocean, and Atmospheric Sciences (CEOAS) at Oregon State University

365

Radon-222 Daughter Concentrations in Uranium Mine Atmospheres  

Science Journals Connector (OSTI)

... undertaken to measure the concentrations of 210Pb and 210Po in uranium mine atmospheres at various radon daughter concentration levels, and to determine the amount of 210Pb in the mine atmosphere ... atmosphere relative to that which would be produced from the decay of the short-lived radon daughters deposited in the lungs. Radium-226 was also measured in air so as ...

RICHARD L. BLANCHARD

1969-07-19T23:59:59.000Z

366

Falsification Of The Atmospheric CO2 Greenhouse Effects  

E-Print Network [OSTI]

Falsification Of The Atmospheric CO2 Greenhouse Effects Within The Frame Of Physics Version 4 Gerlich and Ralf D. Tscheuschner Abstract The atmospheric greenhouse effect, an idea that many authors Of The Atmospheric CO2 Greenhouse Effects . . . 3 Contents Abstract 2 1 Introduction 6 1.1 Problem background

Learned, John

367

Singular Vector Analysis for Atmospheric Chemical Transport Models  

E-Print Network [OSTI]

are presented for a simulation of atmospheric pollution in East Asia in March 2001. The singular valuesSingular Vector Analysis for Atmospheric Chemical Transport Models Wenyuan Liao and Adrian Sandu for atmospheric chemical transport models. The distinguishing feature of these models is the presence of stiff

Sandu, Adrian

368

AT631, Spring 2011 Introduction to Atmospheric Aerosols  

E-Print Network [OSTI]

. Pandis, Atmospheric Chemistry and Physics: From Air Pollution to Climate Change, Wiley-Interscience, 2006AT631, Spring 2011 Introduction to Atmospheric Aerosols Tuesdays 9-9:50 AM, 212B ACRC Wednesdays, Lab, 1-4 PM, ACB 10 Instructor: Prof. Sonia Kreidenweis Atmospheric Chemistry Bldg., Room 19 491

369

Targeted Observations for Atmospheric Chemistry and Transport Models  

E-Print Network [OSTI]

for a simulation of atmospheric pollution in East Asia in March 2001 show that the optimal location of observations, targeted observations. 1 Introduction Our ability to anticipate and manage changes in atmospheric pollutantTargeted Observations for Atmospheric Chemistry and Transport Models Adrian Sandu Department

Sandu, Adrian

370

High-resolution terahertz atmospheric water vapor continuum measurements  

E-Print Network [OSTI]

High-resolution terahertz atmospheric water vapor continuum measurements David M. Slocum,* Thomas M such as pollution monitoring and the detection of energetic chemicals using remote sensing over long path lengths through the atmosphere. Although there has been much attention to atmospheric effects over narrow

Massachusetts at Lowell, University of

371

European Atmospheric Pollution Imported by Cooler Air Masses to  

E-Print Network [OSTI]

European Atmospheric Pollution Imported by Cooler Air Masses to the Eastern Mediterranean during of European pollution are observed in the atmosphere (74 ( 13%). On the other hand, when the Persian Trough). This study demonstrates that atmospheric pollution over the East Mediterranean region during the summer

Einat, Aharonov

372

Science DMZ National Oceanic and Atmospheric Administration  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NOAA NOAA About ESnet Overview ESnet Staff Governance Our Network Case Studies OSCARS Case Studies Science DMZ Case Studies Science DMZ CU Science DMZ Penn State & VTTI Science DMZ NOAA Science DMZ NERSC Science DMZ ALS Multi-facility Workflow LCLS ESnet Strategic Plan ESnet Organizational Chart ESnet History Science Requirements Careers Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Science DMZ National Oceanic and Atmospheric Administration The National Oceanic and Atmospheric Administration (NOAA) in Boulder houses the Earth System Research Lab, which supports a "reforecasting" project. The initiative involves running several decades of historical

373

Atmospheric Measurements of Climate-Relevant Species  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Measurements of Climate-Relevant Species Atmospheric Measurements of Climate-Relevant Species CDIAC's data collection includes measurements of the following climate-relevant chemical species. A summary of recent greenhouse gas concentrations is also available. To determine how compounds are named, see the CDIAC "Name that compound" page. Butane (C4H10) Carbon Dioxide (CO2) Carbon Isotopes Carbon Monoxide (CO) Carbon Tetrachloride (CCl4) Chlorofluorocarbons Chloroform (CHCl3) Deuterium (2H) Ethane (C2H6) Ethyl Nitrate (C2H5ONO2) Ethyne (C2H2) Fluoroform (CHF3) Halogenated Compounds (modern records) Halons (fluorocarbons) Hydrogen (H2) Hydrochlorofluorocarbons (HCFCs) Hydrofluorocarbons (HFCs) i-Propyl Nitrate (C3H7ONO2) Methane (CH4) Methyl Bromide (CH3Br) Methyl Chloride (CH3Cl) Methyl Chloroform (CH3CCl3)

374

ORISE: Capabilities in Climate and Atmospheric Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Capabilities Capabilities ORISE partners with NOAA to operate climate monitoring network U.S. Climate Reference Network (CRN) station in Hawaii The U.S. Climate Reference Network (CRN) consists of 121 stations throughout the continental U.S., Alaska, Hawaii and Canada. The stations use highly accurate and reliable sensors and gauges to measure temperature, wind speed and precipitation. The network allows scientists to study the climate of an area over sustained periods, from 50 to 100 years. Pictured here is a CRN station at the Mauna Loa Slope Observatory in Hawaii. The Oak Ridge Institute for Science and Education (ORISE) works closely with the National Oceanic and Atmospheric Administration's (NOAA) Atmospheric Turbulence and Diffusion Division (ATDD) to perform lower

375

Atmospheric Dispersion Modeling in Safety Analyses; GENII  

Broader source: Energy.gov (indexed) [DOE]

Workshop to Discuss Issues Regarding Deposition Workshop to Discuss Issues Regarding Deposition Velocity June 5-6, 2012 Jeremy Rishel Bruce Napier Atmospheric Dispersion Modeling in Safety Analyses: GENII Today's Presentation.... Will provide a high-level overview of the GENII codes. Will cover basic aspects of GENII's acute atmospheric transport model. Will review the GENII deposition model that is used to estimate the deposition velocity used in plume depletion. 2 GENII Development History 1988 - GENII V1 released ICRP-26/30/48 dosimetry 1990 - GENII V1.485 stabilized Current DOE Toolbox Version 1992 - GENII-S stochastic version 2004 - GENII V2 ICRP-72 age-dependent dosimetry Federal Guidance Report 13 risk factors

376

Parallel computing in atmospheric chemistry models  

SciTech Connect (OSTI)

Studies of atmospheric chemistry are of high scientific interest, involve computations that are complex and intense, and require enormous amounts of I/O. Current supercomputer computational capabilities are limiting the studies of stratospheric and tropospheric chemistry and will certainly not be able to handle the upcoming coupled chemistry/climate models. To enable such calculations, the authors have developed a computing framework that allows computations on a wide range of computational platforms, including massively parallel machines. Because of the fast paced changes in this field, the modeling framework and scientific modules have been developed to be highly portable and efficient. Here, the authors present the important features of the framework and focus on the atmospheric chemistry module, named IMPACT, and its capabilities. Applications of IMPACT to aircraft studies will be presented.

Rotman, D. [Lawrence Livermore National Lab., CA (United States). Atmospheric Sciences Div.

1996-02-01T23:59:59.000Z

377

Atmospheres and radiating surfaces of neutron stars  

E-Print Network [OSTI]

The beginning of the 21st century was marked by a breakthrough in the studies of thermal radiation of neutron stars. Observations with modern space telescopes have provided a wealth of valuable information. Being correctly interpreted, this information can elucidate physics of superdense matter in the interiors of these stars. The theory of formation of thermal spectra of neutron stars is based on the physics of plasmas and radiative processes in stellar photospheres. It provides the framework for interpretation of observational data and for extracting neutron-star parameters from these data. This paper presents a review of the current state of the theory of surface layers of neutron stars and radiative processes in these layers, with the main focus on the neutron stars that possess strong magnetic fields. In addition to the conventional deep (semi-infinite) atmospheres, radiative condensed surfaces of neutron stars and "thin" (finite) atmospheres are also considered.

Potekhin, A Y

2014-01-01T23:59:59.000Z

378

Response of a Coupled Ocean–Atmosphere Model to Increasing Atmospheric Carbon Dioxide: Sensitivity to the Rate of Increase  

Science Journals Connector (OSTI)

The influence of differing rates of increase of the atmospheric CO2 concentration on the climatic response is investigated using a coupled ocean–atmosphere model. Five transient integrations are performed each using a different constant ...

Ronald J. Stouffer; Syukuro Manabe

1999-08-01T23:59:59.000Z

379

Pulsed atmospheric fluidized bed combustor apparatus  

DOE Patents [OSTI]

A pulsed atmospheric fluidized bed reactor system is disclosed and claimed along with a process for utilization of same for the combustion of, e.g. high sulfur content coal. The system affords a economical, ecologically acceptable alternative to oil and gas fired combustors. The apparatus may also be employed for endothermic reaction, combustion of waste products, e.g., organic and medical waste, drying materials, heating air, calcining and the like.

Mansour, Momtaz N. (Columbia, MD)

1993-10-26T23:59:59.000Z

380

Atmosphere to Electrons Initiative Takes Shape  

Broader source: Energy.gov [DOE]

Since DOE launched its Atmosphere to Electrons (A2e) Initiative last July, the A2e executive committee has been developing a comprehensive approach for working with multiple stakeholders (industry, national laboratories, international experts, and universities) over the next 5- to 7 years. In February, they held an external merit review to lay the groundwork for an A2e multi-year strategic research plan.

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Thomson scattering measurements in atmospheric plasma jets  

Science Journals Connector (OSTI)

Electron temperature and electron density in a dc plasma jet at atmospheric pressure have been obtained using Thomson laser scattering. Measurements performed at various scattering angles have revealed effects that are not accounted for by the standard scattering theory. Differences between the predicted and experimental results suggest that higher order corrections to the theory may be required, and that corrections to the form of the spectral density function may play an important role.

G. Gregori; J. Schein; P. Schwendinger; U. Kortshagen; J. Heberlein; E. Pfender

1999-02-01T23:59:59.000Z

382

Free Floating Atmospheric Pressure Ball Plasmas  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Free-Floating Atmospheric Pressure Ball Plasmas Free-Floating Atmospheric Pressure Ball Plasmas G. A. Wurden, Z. Wang, C. Ticos Los Alamos National Laboratory L Al NM 87545 USA Los Alamos, NM 87545 USA C. J. v. Wurden Los Alamos High School L Al NM 87544 Los Alamos, NM 87544 Presented at the PPPL Colloquium Sept. 17, 2008 U N C L A S S I F I E D Operated by the Los Alamos National Security, LLC for the DOE/NNSA LA-UR-08-06284 Outline of this talk *A discussion of ball lightning reports in nature *How can ball plasmas be made in the laboratory? *Detailed experiments on long lived free floating *Detailed experiments on long-lived free-floating atmospheric pressure ball plasmas C i f l b b ll l i h "b ll *Comparison of laboratory ball plasmas with "ball lightning" *Summary U N C L A S S I F I E D Operated by the Los Alamos National Security, LLC for the DOE/NNSA

383

Atmospheric and combustion chemistry of dimethyl ether  

SciTech Connect (OSTI)

It has been demonstrated that dimethyl ether (DME) is an ideal diesel fuel alternative. DME, CH{sub 3}OCH{sub 3}, combines good fuel properties with low exhaust emissions and low combustion noise. Large scale production of this fuel can take place using a single step catalytic process converting CH{sub 4} to DME. The fate of DME in the atmosphere has previously been studied. The atmospheric degradation is initiated by the reaction with hydroxyl radicals, which is also a common feature of combustion processes. Spectrokinetic investigations and product analysis were used to demonstrate that the intermediate oxy radical, CH{sub 3}OCH{sub 2}O, exhibits a novel reaction pathway of hydrogen atom ejection. The application of tandem mass spectrometry to chemi-ions based on supersonic molecular beam sampling has recently been demonstrated. The highly reactive ionic intermediates are sampled directly from the flame and identified by collision activation mass spectrometry and ion-molecule reactions. The mass spectrum reflects the distribution of the intermediates in the flame. The atmospheric degradation of DME as well as the unique fuel properties of a oxygen containing compound will be discussed.

Nielsen, O.J.; Egsgaard, H.; Larsen, E.; Sehested, J. [Risoe National Lab., Roskilde (Denmark); Wallington, T.J. [Ford Motor Co., Dearborn, MI (United States)

1997-12-31T23:59:59.000Z

384

The atmospheric reactivity of. alpha. -methyltetrahydrofuran  

SciTech Connect (OSTI)

Biomass-derived {alpha}-methyltetrahydrofuran (MTHF) has been proposed as an automotive fuel additive. Since MTHF is a volatile organic compound, the environmental impact of evaporation to the atmosphere needs to be considered. The major loss process of MTHF in the atmosphere is expected to occur via reaction with hydroxyl radical; hence we have conducted a study of the kinetics of the reaction OH + MTHF {yields} products using both absolute (flash photolysis resonance fluorescence) and relative rate techniques. The absolute rate experiments were performed over the temperature range 240-400 K at total pressures of 35 Torr (4.7 kPa) argon; the relative rate experiments were conducted at 295 K in 740 Torr (99 kPa) synthetic air. The results from both techniques were in good agreement and yield k{sub 1} = (2.52 {plus minus} 0.74) {times} 10{sup {minus}12} exp-((650 {plus minus} 80)/T) cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}, with k{sub 1} (298 K) = 2.2 {times} 10{sup {minus}11} cm{sup 3} molecule{sup {minus}1}. The implications of these results for the atmospheric chemistry of MTHF are discussed.

Wallington, T.J.; Siegl, W.O. (Ford Motor Company, Dearborn, MI (USA)); Liu, Renzhang; Zhang, Zhengyu; Huie, R.E.; Kurylo, M.J. (National Institute of Standards and Technology, Gaithersburg, MD (USA))

1990-10-01T23:59:59.000Z

385

Extraction of Freshwater and Energy from Atmosphere  

E-Print Network [OSTI]

Author offers and researches a new, cheap method for the extraction of freshwater from the Earth atmosphere. The suggected method is fundamentally dictinct from all existing methods that extract freshwater from air. All other industrial methods extract water from a saline water source (in most cases from seawater). This new method may be used at any point in the Earth except Polar Zones. It does not require long-distance freshwater transportation. If seawater is not utilized for increasing its productivity, this inexpensive new method is very environment-friendly. The author method has two working versions: (1) the first variant the warm (hot) atmospheric air is lifted by the inflatable tube in a high altitude and atmospheric steam is condenced into freswater: (2) in the second version, the warm air is pumped 20-30 meters under the sea-surface. In the first version, wind and solar heating of air are used for causing air flow. In version (2) wind and propeller are used for causing air movment. The first method...

Bolonkin, Alexander

2007-01-01T23:59:59.000Z

386

Lightning, atmospheric electricity and climate change  

SciTech Connect (OSTI)

Temperature records indicate that a global warming of 0.5{minus}0.7{degrees}C has occurred over the past century (Hansen and Lebedeff, 1987). Whether this trend is a result of increased trace gas concentrations in the atmosphere, or simply a result of natural variability; is still not known. These temperature trends are derived from thousands of observations worldwide. However, these observations are concentrated largely over continental areas, and then mainly in the northern hemisphere`s populated regions. This northern hemisphere continental bias results in large uncertainties in estimates of global temperature trends. Due to the increasing evidence that the present buildup of greenhouse gases in the atmosphere may result in an additional global warming of 1-5{degrees}C by the year 2050 (IPCC, 1990), it is increasingly important to find afternative methods to monitor fluctuations in global surface temperatures. As shown by two recent studies (Williams, 1992; Price, 1993), the global atmospheric electric circuit may provide a promising afternative for monitoring future climate change.

Price, C.

1993-10-01T23:59:59.000Z

387

IONIZATION OF EXTRASOLAR GIANT PLANET ATMOSPHERES  

SciTech Connect (OSTI)

Many extrasolar planets orbit close in and are subject to intense ionizing radiation from their host stars. Therefore, we expect them to have strong, and extended, ionospheres. Ionospheres are important because they modulate escape in the upper atmosphere and can modify circulation, as well as leave their signatures, in the lower atmosphere. In this paper, we evaluate the vertical location Z{sub I} and extent D{sub I} of the EUV ionization peak layer. We find that Z{sub I{approx}}1-10 nbar-for a wide range of orbital distances (a = 0.047-1 AU) from the host star-and D{sub I}/H{sub p{approx}}>15, where H{sub p} is the pressure scale height. At Z{sub I}, the plasma frequency is {approx}80-450 MHz, depending on a. We also study global ion transport, and its dependence on a, using a three-dimensional thermosphere-ionosphere model. On tidally synchronized planets with weak intrinsic magnetic fields, our model shows only a small, but discernible, difference in electron density from the dayside to the nightside ({approx}9 x 10{sup 13} m{sup -3} to {approx}2 x 10{sup 12} m{sup -3}, respectively) at Z{sub I}. On asynchronous planets, the distribution is essentially uniform. These results have consequences for hydrodynamic modeling of the atmospheres of close-in extrasolar giant planets.

Koskinen, Tommi T. [Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ (United States); Cho, James Y-K. [Astronomy Unit, School of Mathematical Sciences, Queen Mary, University of London, Mile End Road, London E1 4NS (United Kingdom); Achilleos, Nicholas; Aylward, Alan D., E-mail: tommi@lpl.arizona.ed [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)

2010-10-10T23:59:59.000Z

388

Atmospheric Aerosol Chemistry Analyzer: Demonstration of feasibility  

SciTech Connect (OSTI)

This is the final report of a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The project objective was to demonstrate the technical feasibility of an Atmospheric Aerosol Chemistry Analyzer (AACA) that will provide a continuous, real-time analysis of the elemental (major, minor and trace) composition of atmospheric aerosols. The AACA concept is based on sampling the atmospheric aerosol through a wet cyclone scrubber that produces an aqueous suspension of the particles. This suspension can then be analyzed for elemental composition by ICP/MS or collected for subsequent analysis by other methods. The key technical challenge was to develop a wet cyclone aerosol sampler suitable for respirable particles found in ambient aerosols. We adapted an ultrasonic nebulizer to a conventional, commercially available, cyclone aerosol sampler and completed collection efficiency tests for the unit, which was shown to efficiently collect particles as small as 0.2 microns. We have completed the necessary basic research and have demonstrated the feasibility of the AACA concept.

Mroz, E.J.; Olivares, J.; Kok, G.

1996-04-01T23:59:59.000Z

389

Photochemistry in Terrestrial Exoplanet Atmospheres III: Photochemistry and Thermochemistry in Thick Atmospheres on Super Earths and Mini Neptunes  

E-Print Network [OSTI]

Some super Earths and mini Neptunes will likely have thick atmospheres that are not H2-dominated. We have developed a photochemistry-thermochemistry kinetic-transport model for exploring the compositions of thick atmospheres on super Earths and mini Neptunes, applicable for both H2-dominated atmospheres and non-H2-dominated atmospheres. Using this model to study thick atmospheres for wide ranges of temperatures and elemental abundances, we classify them into hydrogen-rich atmospheres, water-rich atmospheres, oxygen-rich atmospheres, and hydrocarbon-rich atmospheres. We find that carbon has to be in the form of CO2 rather than CH4 or CO in a H2-depleted water-dominated thick atmosphere, and that the preferred loss of light elements from an oxygen-poor carbon-rich atmosphere leads to formation of unsaturated hydrocarbons (C2H2 and C2H4). We apply our self-consistent atmosphere models to compute spectra and diagnostic features for known transiting low-mass exoplanets GJ 1214 b, HD 97658 b, and 55 Cnc e. For GJ 1...

Hu, Renyu

2014-01-01T23:59:59.000Z

390

HIGH-RESOLUTION ATMOSPHERIC ENSEMBLE MODELING AT SRNL  

SciTech Connect (OSTI)

The High-Resolution Mid-Atlantic Forecasting Ensemble (HME) is a federated effort to improve operational forecasts related to precipitation, convection and boundary layer evolution, and fire weather utilizing data and computing resources from a diverse group of cooperating institutions in order to create a mesoscale ensemble from independent members. Collaborating organizations involved in the project include universities, National Weather Service offices, and national laboratories, including the Savannah River National Laboratory (SRNL). The ensemble system is produced from an overlapping numerical weather prediction model domain and parameter subsets provided by each contributing member. The coordination, synthesis, and dissemination of the ensemble information are performed by the Renaissance Computing Institute (RENCI) at the University of North Carolina-Chapel Hill. This paper discusses background related to the HME effort, SRNL participation, and example results available from the RENCI website.

Buckley, R.; Werth, D.; Chiswell, S.; Etherton, B.

2011-05-10T23:59:59.000Z

391

MODELLING THE OVERLAND TRANSPORT OF LEAD DEPOSITED FROM THE ATMOSPHERE IN THE ELBE CATCHMENT OVER FOUR  

E-Print Network [OSTI]

unknown. Despite decreasing atmospheric pollution, soil and freshwater systems still indicate high lead on minimizing atmospheric emissions, but also on minimizing soil erosion. Keywords: atmospheric pollution, direct atmospheric deposition, direct runoff, Elbe catchment, erosion, soil pollution, lead, long

Costa-Cabral, Mariza

392

DE-SC0001933 DOE Final Report  

SciTech Connect (OSTI)

The overall objective of this study was to improve the representation of regional ocean circulation in the North Pacific by using high resolution atmospheric forcing that accurately represents mesoscale processes in ocean-atmosphere regional (North Pacific) model configuration. The goal was to assess the importance of accurate representation of mesoscale processes in the atmosphere and the ocean on large scale circulation. This is an important question, as mesoscale processes in the atmosphere which are resolved by the high resolution mesoscale atmospheric models such as Weather Research and Forecasting (WRF), are absent in commonly used atmospheric forcing such as CORE forcing, employed in e.g. the Community Climate System Model (CCSM).

Cerovecki, Ivana

2014-11-14T23:59:59.000Z

393

Low energy atmospheric muon neutrinos in MACRO  

E-Print Network [OSTI]

The flux of low energy neutrinos (~ 4 GeV) has been studied with the MACRO detector at Gran Sasso via the detection of muon neutrinos interactions inside the apparatus, and of upward-going stopping muons. Data collected in ~3 y with the full apparatus were analyzed. The results are compatible with a deficit of the flux of atmospheric muon neutrinos from below, and no reduction from above, with respect to Monte Carlo predictions. The deficit and the angular distributions are interpreted in terms of neutrino oscillations, and compared with the MACRO results on the upward throughgoing muons (~ 100 GeV).

M. Spurio; for the MACRO Collaboration

1998-08-01T23:59:59.000Z

394

Sampling procedure for atmospheric geothermal brines  

SciTech Connect (OSTI)

Thermodynamic and chemical changes can alter the characteristics of geothermal brine samples significantly. A procedure which minimizes these changes has been developed for sampling atmospheric geothermal brines. The method is fast with minimal cooling and yields representative samples which have been stabilized to preserve their integrity. The procedure provides reliable suspended solids data and both the solid and liquid samples are suitable for elemental analysis. The procedure is also a valuable tool to aid in monitoring a geothermal brine conditioning system. Data are included from a flow test at an MCR Geothermal well in the Imperial Valley area of California to illustrate the utility of the sampling procedure.

Kochelek, J.T.; Zienty, D.F.

1981-10-01T23:59:59.000Z

395

Characteristics of atmospheric gravity waves observed using the MU (Middle and Upper atmosphere) radar  

E-Print Network [OSTI]

in 1970s.6) In order to explain this weakening *1 Research Institute for Sustainable Humanosphere (RISH for Sustainable Humanosphere (RISH), Kyoto Univer- sity, Uji, Kyoto 611-0011, Japan (e-mail: tsuda processes of atmospheric gravity waves was proposed.7),8) In the 1980s a notable advance was made

Takada, Shoji

396

Hydrodynamics of Embedded Planets' First Atmospheres. II. A Rapid Recycling of Atmospheric Gas  

E-Print Network [OSTI]

Following Paper I we investigate the properties of atmospheres that form around small protoplanets embedded in a protoplanetary disc by conducting hydrodynamical simulations. These are now extended to three dimensions, employing a spherical grid centred on the planet. Compression of gas is shown to reduce rotational motions. Contrasting the 2D case, no clear boundary demarcates bound atmospheric gas from disc material; instead, we find an open system where gas enters the Bondi sphere at high latitudes and leaves through the midplane regions, or, vice versa, when the disc gas rotates sub-Keplerian. The simulations do not converge to a time-independent solution; instead, the atmosphere is characterized by a time-varying velocity field. Of particular interest is the timescale to replenish the atmosphere by nebular gas, $t_\\mathrm{replenish}$. It is shown that the replenishment rate, $M_\\mathrm{atm}/t_\\mathrm{replenish}$, can be understood in terms of a modified Bondi accretion rate, $\\sim$$R_\\mathrm{Bondi}^2\\rho...

Ormel, Chris W; Kuiper, Rolf

2014-01-01T23:59:59.000Z

397

Spectrophotometric Resolution of Stellar Atmospheres with Microlensing  

E-Print Network [OSTI]

Microlensing is a powerful tool for studying stellar atmospheres because as the source crosses regions of formally infinite magnification (caustics) the surfaceof the star is resolved, thereby allowing one to measure the radial intensity profile, both photometrically and spectroscopically. However, caustic crossing events are relatively rare, and monitoring them requires intensive application of telescope resources. It is therefore essential that the observational parameters needed to accurately measure the intensity profile are quantified. We calculate the expected errors in the recovered radial intensity profile as a function of the unlensed flux, source radius, spatial resolution the recovered intensity profile, and caustic crossing time for the two principle types of caustics: point-mass and binary lenses. We demonstrate that for both cases there exist simple scaling relations between these parameters and the resultant errors. We find that the error as a function of the spatial resolution of the recovered profile, parameterized by the number of radial bins, increases as $N_R^{3/2}$, considerably faster than the naive $N_R^{1/2}$ expectation. Finally, we discuss the relative advantages of binary caustic-crossing events and point-lens events. Binary events are more common, easier to plan for, and provide more homogeneous information about the stellar atmosphere. However, a sub-class of point-mass events with low impact parameters can provide dramatically more information provided that they can be recognized in time to initiate observations.

B. Scott Gaudi; Andrew Gould

1998-02-14T23:59:59.000Z

398

Cold atmospheric plasma in cancer therapy  

SciTech Connect (OSTI)

Recent progress in atmospheric plasmas has led to the creation of cold plasmas with ion temperature close to room temperature. This paper outlines recent progress in understanding of cold plasma physics as well as application of cold atmospheric plasma (CAP) in cancer therapy. Varieties of novel plasma diagnostic techniques were developed recently in a quest to understand physics of CAP. It was established that the streamer head charge is about 10{sup 8} electrons, the electrical field in the head vicinity is about 10{sup 7} V/m, and the electron density of the streamer column is about 10{sup 19} m{sup ?3}. Both in-vitro and in-vivo studies of CAP action on cancer were performed. It was shown that the cold plasma application selectively eradicates cancer cells in-vitro without damaging normal cells and significantly reduces tumor size in-vivo. Studies indicate that the mechanism of action of cold plasma on cancer cells is related to generation of reactive oxygen species with possible induction of the apoptosis pathway. It is also shown that the cancer cells are more susceptible to the effects of CAP because a greater percentage of cells are in the S phase of the cell cycle.

Keidar, Michael; Shashurin, Alex; Volotskova, Olga [Mechanical and Aerospace Engineering, George Washington University, Washington DC 20052 (United States)] [Mechanical and Aerospace Engineering, George Washington University, Washington DC 20052 (United States); Ann Stepp, Mary [Medical School, George Washington University, Washington DC 20052 (United States)] [Medical School, George Washington University, Washington DC 20052 (United States); Srinivasan, Priya; Sandler, Anthony [Childrens National Medical Center, Washington DC 20010 (United States)] [Childrens National Medical Center, Washington DC 20010 (United States); Trink, Barry [Head and Neck Cancer Research Division, Department of Otolaryngology, School of Medicine, Johns Hopkins University, Baltimore, Maryland 21205 (United States)] [Head and Neck Cancer Research Division, Department of Otolaryngology, School of Medicine, Johns Hopkins University, Baltimore, Maryland 21205 (United States)

2013-05-15T23:59:59.000Z

399

Atmospheric model intercomparison project: Monsoon simulations  

SciTech Connect (OSTI)

The simulation of monsoons, in particular the Indian summer monsoon, has proven to be a critical test of a general circulation model`s ability to simulate tropical climate and variability. The Monsoon Numerical Experimentation Group has begun to address questions regarding the predictability of monsoon extremes, in particular conditions associated with El Nino and La Nina conditions that tend to be associated with drought and flood conditions over the Indian subcontinent, through a series of seasonal integrations using analyzed initial conditions from successive days in 1987 and 1988. In this paper the authors present an analysis of simulations associated with the Atmospheric Model Intercomparison Project (AMIP), a coordinated effort to simulate the 1979--1988 decade using standardized boundary conditions with approximately 30 atmospheric general circulation models. The 13 models analyzed to date are listed. Using monthly mean data from these simulations they have calculated indices of precipitation and wind shear in an effort to access the performance of the models over the course of the AMIP decade.

Sperber, K.R. [Lawrence Livermore National Lab., CA (United States). Program for Climate Model Diagnosis and Intercomparison; Palmer, T.N. [European Centre for Medium-Range Weather Forecasts, Reading (United Kingdom)

1994-06-01T23:59:59.000Z

400

ARM - Field Campaign - Lower Atmospheric Boundary Layer Experiment  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govCampaignsLower Atmospheric Boundary Layer Experiment govCampaignsLower Atmospheric Boundary Layer Experiment Campaign Links LABLE Website Related Campaigns 2013 Lower Atmospheric Boundary Layer Experiment 2013.05.28, Turner, SGP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Lower Atmospheric Boundary Layer Experiment 2012.09.17 - 2012.11.13 Lead Scientist : David Turner Description Boundary layer turbulence is an important process that is parameterized in most atmospheric numerical models. Turbulence redistributes energy and mass within the boundary layer. Many different characteristics can impact the character of turbulence in the boundary layer, including different surface types, horizontal wind speed and direction, and the vertical temperature structure of the atmosphere. However, there have been few studies that have

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

A Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego  

Open Energy Info (EERE)

Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego And Mount St Helens Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity- Fuego And Mount St Helens Details Activities (0) Areas (0) Regions (0) Abstract: The large amount of scientific data collected on the Mount St. Helens eruption has resulted in significant changes in thinking about the atmospheric hazards caused by explosive volcanic activity. The hazard posed by fine silicate ash with long residence time in the atmosphere is probably much less serious than previously thought. The Mount St. Helens eruption released much fine ash in the upper atmosphere. These silicates were removed very rapidly due to a process of particle aggregation (Sorem, 1982;

402

JGR-Atmospheres Papers from the RADAGAST Research Team  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

JGR-Atmospheres Papers from the RADAGAST Research Team JGR-Atmospheres Papers from the RADAGAST Research Team Bharmal, N.A., A. Slingo, G.J. Robinson, and J.J. Settle, 2009: Simulation of surface and top of atmosphere thermal fluxes and radiances from the RADAGAST experiment. Journal of Geophysical Research-Atmospheres, 114, doi:10.1029/2008JD010504, in press. Kollias, P., M.A. Miller, K.L. Johnson, M.P. Jensen, and D.T. Troyan, 2009: Cloud, thermodynamic, and precipitation observations in West Africa during 2006. Journal of Geophysical Research- Atmospheres, 114, doi: 10.1029/2008JD010641, in press. McFarlane, S.A., E.I. Kassianov, J. Barnard, C. Flynn, and T. Ackerman, 2009: Surface shortwave aerosol forcing during the ARM Mobile Facility deployment in Niamey, Niger. Journal of Geophysical Research-Atmospheres, 114, doi: 10.1029/2008JD010491, 17 pages.

403

Atmospheric Concentrations of CO2 from Mauna Loa, Hawaii  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Concentrations of CO2 from Mauna Loa, Hawaii Atmospheric Concentrations of CO2 from Mauna Loa, Hawaii The graphs on this page are generated from data taken from "Trends in Carbon Dioxide" page on the Department of Commerce/National Oceanic and Atmospheric Administration (NOAA) website. The NOAA website presents monthly and weekly atmospheric CO2 concentrations measured at the Mauna Loa Observatory in Hawaii. It offers weekly and monthly data, additional graphs, analysis, descriptions of how the data are collected, and an animation of historical changes in atmospheric CO2. Mauna Loa constitutes the longest record of direct measurements of CO2 in the atmosphere. The measurents were started by C. David Keeling of the Scripps Institution of Oceanography in March of 1958. Recent Monthly Average CO2

404

SRNL EMERGENCY RESPONSE CAPABILITY FOR ATMOSPHERIC CONTAMINANT RELEASES  

SciTech Connect (OSTI)

Emergency response to an atmospheric release of chemical or radiological contamination is enhanced when plume predictions, field measurements, and real-time weather information are integrated into a geospatial framework. The Weather Information and Display (WIND) System at Savannah River National Laboratory (SRNL) utilizes such an integrated framework. The rapid availability of predictions from a suite of atmospheric transport models within this geospatial framework has proven to be of great value to decision makers during an emergency involving an atmospheric contaminant release.

Koffman, L; Chuck Hunter, C; Robert Buckley, R; Robert Addis, R

2006-07-12T23:59:59.000Z

405

National Atmospheric Release Advisory Center | National Nuclear Security  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Release Advisory Center | National Nuclear Security Atmospheric Release Advisory Center | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog National Atmospheric Release Advisory Center Home > About Us > Our Programs > Emergency Response > Responding to Emergencies > Consequence Management > National Atmospheric Release Advisory Center

406

Global Atmospheric Pollution Forum Air Pollutant Emission Inventory | Open  

Open Energy Info (EERE)

Global Atmospheric Pollution Forum Air Pollutant Emission Inventory Global Atmospheric Pollution Forum Air Pollutant Emission Inventory Jump to: navigation, search Tool Summary Name: Global Atmospheric Pollution (GAP) Forum Air Pollutant Emission Inventory Agency/Company /Organization: BOC foundation, U.S. Environment Protection Agency (EPA) and Swedish International Development Cooperation Agency (SIDA) Complexity/Ease of Use: Moderate Website: sei-international.org/rapidc/gapforum/html/emissions-manual.php Cost: Free Related Tools Global Atmospheric Pollution Forum Air Pollutant Emission Inventory World Induced Technical Change Hybrid (WITCH) Energy Development Index (EDI) ... further results Find Another Tool FIND DEVELOPMENT IMPACTS ASSESSMENT TOOLS A manual that provides formulation of methods and assessment of good

407

Hierardlicsl Diagnosis V. V. Zuev Institute of Atmospheric Optics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Atmospheric Optics Siberian Branch of the Russian Academy of Sciences Tomsk, Russia Systematic observations of the earth's ozone layer over the last ten years indicate a...

408

Enhancing Electrostatic Properties and Hydroentangling Efficiency via Atmospheric Plasma Treatment.  

E-Print Network [OSTI]

??ABSTRACT MALSHE, PRIYADARSHINI PRAKASH. Enhancing Electrostatic Properties and Hydroentangling Efficiency via Atmospheric Plasma Treatment. (Under the guidance of Professors Marian G. McCord and Mohamed A.… (more)

Malshe, Priyadarshini Prakash

2009-01-01T23:59:59.000Z

409

Novel Applications of Atmospheric Pressure Plasma on Textile Materials.  

E-Print Network [OSTI]

??Various applications of atmospheric pressure plasma are investigated in conjunction with polymeric materials including paper, polypropylene non-woven fabric, and cotton. The effect of plasma on… (more)

Cornelius, Carrie Elizabeth

2009-01-01T23:59:59.000Z

410

Dissociation of carbon dioxide in atmospheric pressure microchannel plasma devices.  

E-Print Network [OSTI]

??Plasma discharge of carbon dioxide at atmospheric pressure was successfully demonstrated in microchannel plasma devices at breakdown voltages lower than 1 kVRMS. Optical emissions of… (more)

Oh, Taegon

2013-01-01T23:59:59.000Z

411

Stain Repellent-Antimicrobial Textiles via Atmospheric Plasma Finishes.  

E-Print Network [OSTI]

??This research was aimed to impart antimicrobial and stain repellent finishes to polyester fabrics using atmospheric pressure plasma-aided graft copolymerization of active monomers. The process… (more)

McLean, Robert II

2008-01-01T23:59:59.000Z

412

Technical Sessions M. C. MacCracken Atmospheric amj Geophysical...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

system, including treatment of the deep ocean and horizontal transport by ocean currents 4 Separate, uncoupled, and limited treatment of atmospheric composition,...

413

Technical Sessions D. A. Randall K. Xu Department of Atmospheric...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

D. A. Randall K. Xu Department of Atmospheric Science Colorado State University Fort Collins, CO 80523 simulating observations collected during ARM, and to suggest...

414

atmospheric control systems: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to optical depth perturbations. In Earth-type atmospheres sustained planetary greenhouse effect with a stable ground surface temperature can only exist at a particular...

415

atmospheres psychiatric knowledge: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to optical depth perturbations. In Earth-type atmospheres sustained planetary greenhouse effect with a stable ground surface temperature can only exist at a particular...

416

atmospheric parameters uncertainlty: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to optical depth perturbations. In Earth-type atmospheres sustained planetary greenhouse effect with a stable ground surface temperature can only exist at a particular...

417

A Volcanologist'S Review Of Atmospheric Hazards Of Volcanic Activity...  

Open Energy Info (EERE)

evidence to suggest that particle aggregation is particularly successful in removing glass shards with high surface areasmass ratios. The primary atmospheric hazard of...

418

Diesel and Gasoline Engine Emissions: Characterization of Atmosphere...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Gasoline Engine Emissions: Characterization of Atmosphere Composition and Health Responses to Inhaled Emissions Diesel and Gasoline Engine Emissions: Characterization of...

419

Atmospheric Carbon Dioxide Record from Mauna Loa  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SIO Air Sampling Network » Mauna Loa SIO Air Sampling Network » Mauna Loa Atmospheric Carbon Dioxide Record from Mauna Loa DOI: 10.3334/CDIAC/atg.035 graphics Graphics data Data Investigators R.F. Keeling, S.C. Piper, A.F. Bollenbacher and J.S. Walker Carbon Dioxide Research Group Scripps Institution of Oceanography University of California La Jolla, California 92093-0444, U.S.A. Period of Record 1958-2008 Methods Air samples at Mauna Loa are collected continuously from air intakes at the top of four 7-m towers and one 27-m tower. Four air samples are collected each hour for the purpose of determining the CO2 concentration. Determinations of CO2 are made by using a Siemens Ultramat 3 nondispersive infrared gas analyzer with a water vapor freeze trap. This analyzer registers the concentration of CO2 in a stream of air flowing at ~0.5

420

Propagation of an atmospheric pressure plasma plume  

SciTech Connect (OSTI)

The ''plasma bullet'' behavior of atmospheric pressure plasma plumes has recently attracted significant interest. In this paper, a specially designed plasma jet device is used to study this phenomenon. It is found that a helium primary plasma can propagate through the wall of a dielectric tube and keep propagating inside the dielectric tube (secondary plasma). High-speed photographs show that the primary plasma disappears before the secondary plasma starts to propagate. Both plumes propagate at a hypersonic speed. Detailed studies on the dynamics of the plasma plumes show that the local electric field induced by the charges on the surface of the dielectric tube plays an important role in the ignition of the secondary plasma. This indicates that the propagation of the plasma plumes may be attributed to the local electric field induced by the charges in the bulletlike plasma volume.

Lu, X.; Xiong, Q.; Xiong, Z.; Hu, J.; Zhou, F.; Gong, W.; Xian, Y.; Zou, C.; Tang, Z.; Jiang, Z.; Pan, Y. [College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China)

2009-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Atmospheric considerations for the CTA site search  

E-Print Network [OSTI]

The Cherenkov Telescope Array (CTA) will be the next high-energy gamma-ray observatory. Selection of the sites, one in each hemisphere, is not obvious since several factors have to be taken into account. Among them, and probably the most crucial, are the atmospheric conditions. Since July 2012, the site working group has deployed automatic ground based instrumentation (ATMOSCOPE) on all the candidate sites. Due to the limited time span available from ground based data, long term weather forecast models become necessary tools for site characterization. It is then of prime importance to validate the models by comparing it to the ATMOSCOPE measurements. We will describe the sources of data (ATMOSCOPE, weather forecasting model and satellite data) for the site evaluation and how they will be used and combined.

Vincent, Stephane

2014-01-01T23:59:59.000Z

422

Wave Heating of the Solar Atmosphere  

E-Print Network [OSTI]

Magnetic waves are a relevant component in the dynamics of the solar atmosphere. Their significance has increased because of their potential as a remote diagnostic tool and their presumed contribution to plasma heating processes. We discuss our current understanding on coronal heating by magnetic waves, based on recent observational evidence and theoretical advances. The discussion starts with a selection of observational discoveries that have brought magnetic waves to the forefront of the coronal heating discussion. Then, our theoretical understanding on the nature and properties of the observed waves and the physical processes that have been proposed to explain observations are described. Particular attention is given to the sequence of processes that link observed wave characteristics with concealed energy transport, dissipation, and heat conversion. We conclude with a commentary on how the combination of theory and observations should help us understanding and quantifying magnetic wave heating of the sola...

Arregui, I

2015-01-01T23:59:59.000Z

423

Emulation to simulate low resolution atmospheric data  

SciTech Connect (OSTI)

Climate simulations require significant compute power, they are complex and therefore it is time consuming to simulate them. We have developed an emulator to simulate unknown climate datasets. The emulator uses stochastic collocation and multi-dimensional in- terpolation to simulate the datasets. We have used the emulator to determine various physical quantities such as temperature, short and long wave cloud forcing, zonal winds etc. The emulation gives results which are very close to those obtained by simulations. The emulator was tested on 2 degree atmospheric datasets. The work evaluates the pros and cons of evaluating the mean first and inter- polating and vice versa. To determine the physical quantities, we have assumed them to be a function of time, longitude, latitude and a random parameter. We have looked at parameters that govern high stable clouds, low stable clouds, timescale for convection etc. The emulator is especially useful as it requires negligible compute times when compared to the simulation itself.

Hebbur Venkata Subba Rao, Vishwas [ORNL; Archibald, Richard K [ORNL; Evans, Katherine J [ORNL

2012-08-01T23:59:59.000Z

424

Thermodynamics of atmospheric circulation on hot Jupiters  

E-Print Network [OSTI]

Atmospheric circulation on tidally-locked exoplanets is driven by the absorption and reradiation of heat from the host star. They are natural heat engines, converting heat into mechanical energy. A steady state is possible only if there is a mechanism to dissipate mechanical energy, or if the redistribution of heat is so effective that the Carnot efficiency is driven to zero. Simulations based on primitive, equivalent-barotropic, or shallow-water equations without explicit provision for dissipation of kinetic energy and for recovery of that energy as heat, violate energy conservation. More seriously perhaps, neglect of physical sources of drag may overestimate wind speeds and rates of advection of heat from the day to the night side.

J. Goodman

2008-10-07T23:59:59.000Z

425

Helium in the outer solar atmosphere  

Science Journals Connector (OSTI)

We construct models of the outer solar atmosphere comprising the region from the mid chromosphere and into the solar wind in order to study the force and energy balance in models with a significant helium abundance. The corona is created by dissipation of an energy flux from the Sun. The energy flux is lost as radiation from the top of the chromosphere and as gravitational and kinetic solar wind energy flux. We find that in models with significant ion heating of the extended corona most of the energy flux is lost in the solar wind. The ion temperatures are higher than the electron temperature in these models and the ?-particle temperature is much higher than the proton temperature. Roughly speaking we find that the relative ?-particle and proton fluxes are set by the degree of chromospheric mixing while the speeds are set by the details of the coronal heating process.

V. H. Hansteen; E. Leer; T. E. Holzer

1997-01-01T23:59:59.000Z

426

Atmospheric transmittance model for photosynthetically active radiation  

SciTech Connect (OSTI)

A parametric model of the atmospheric transmittance in the PAR band is presented. The model can be straightforwardly applied for calculating the beam, diffuse and global components of the PAR solar irradiance. The required inputs are: air pressure, ozone, water vapor and nitrogen dioxide column content, Ångström's turbidity coefficient and single scattering albedo. Comparison with other models and ground measured data shows a reasonable level of accuracy for this model, making it suitable for practical applications. From the computational point of view the calculus is condensed into simple algebra which is a noticeable advantage. For users interested in speed-intensive computation of the effective PAR solar irradiance, a PC program based on the parametric equations along with a user guide are available online at http://solar.physics.uvt.ro/srms.

Paulescu, Marius; Stefu, Nicoleta; Gravila, Paul; Paulescu, Eugenia; Boata, Remus; Pacurar, Angel; Mares, Oana [Physics Department, West University of Timisoara, V Parvan 4, 300223 Timisoara (Romania); Pop, Nicolina [Department of Physical Foundations of Engineering, Politehnica University of Timisoara, V Parvan 2, 300223 Timisoara (Romania); Calinoiu, Delia [Mechanical Engineering Faculty, Politehnica University of Timisoara, Mihai Viteazu 1, 300222 Timisoara (Romania)

2013-11-13T23:59:59.000Z

427

Modeling of atmospheric corrosion behavior of weathering steel in sulfur dioxide-polluted atmospheres  

SciTech Connect (OSTI)

Atmospheric corrosion resistance of carbon steel (CS) and high-phosphorus weathering steel (WS, Acr-Ten A) was compared after exposure for up to 6 years in Taiwan. In an industrial atmosphere, corrosion kinetics of WS after 3 years of exposure deviated from behavior predicted by the well-known bilogarithmic law. This deviation was simulated using a laboratory accelerated test under cyclic wet/dry conditions with addition of 1 ppm sulfur dioxide (SO{sub 2}). In-situ electrochemical impedance measurements also were carried out in a modified three-electrode cell covered by a thin electrolyte layer to investigate corrosion behavior of WS in SO{sub 2}-polluted environments. Three impedance models were proposed to explain the characteristic corrosion behavior of WS in various stages of exposure.

Wang, J.H.; Shih, H.C. [National Tsing Hua Univ., Hsinchu (Taiwan, Province of China). Dept. of Materials Science and Engineering; Wei, F.I. [China Steel Corp., Kaoshiung (Taiwan, Province of China)

1996-12-01T23:59:59.000Z

428

High-Resolution Large-Eddy Simulations of Scalar Transport in Atmospheric Boundary Layer Flow over Complex Terrain  

E-Print Network [OSTI]

of Electric Power Industry, Chiba, Japan FOTINI KATOPODES CHOW Department of Civil and Environmental to the choice of numerical simulation parameters than is typically needed for mean wind field predictions. Large-eddy simulation is used in a mesoscale setting, providing modeling advantages through the use of robust turbulence

Chow, Fotini Katopodes

429

Remote Sensing of the Atmosphere and Ocean (11:670:451/16:712:552) Class website: Sakai  

E-Print Network [OSTI]

and Oceanic Science. 2) Develop specific understanding of the radar and satellite remote sensors used to conduct a weather discussion of mesoscale and synoptic weather systems, and ocean state. 3) Develop and Scattering M. Miller Wind Profiler Radars M. Miller No Class J. Wilkin Weather Radar M. Miller Weather Radar

430

ADVANCES IN ATMOSPHERIC SCIENCES, VOL. 25, NO. 1, 2008, 1123 Total Deformation and its Role in Heavy Precipitation Events  

E-Print Network [OSTI]

Research and Forecasting (WRF) model output data. It is found that right before the occurrence of the terms shows that the pressure gradient plays a major role in determining the local change of total and wind velocity, only wind velocity is a vector. At the mesoscale, where the characteristic scale is less

Xue, Ming

431

Style Guide Atmospheric Radiation Measurement (ARM) Climate Research Facility  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Style Guide Style Guide Atmospheric Radiation Measurement (ARM) Climate Research Facility March 2013 Style Guide Atmospheric Radiation Measurement Climate Research Facility March 2013 Work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research March 2013 ii Contents 1.0 Introduction .......................................................................................................................................... 1 2.0 Acronyms and Abbreviations ............................................................................................................... 1 2.1 Usage ............................................................................................................................................ 1

432

Interactive Visualization of Modeled Atmospheric Trace Constituents Carmen M. Benkovitz  

E-Print Network [OSTI]

the effects of the emissions of Popocatepetl volcano, located near Mexico City. The effects of stronger of the Brookhaven National Laboratory Chemical Transport Model (CTM) of sulfate in the atmosphere. The visualization on climate. Anthropogenic activities affect the aerosol content of the atmosphere. Anthropogenic emissions

433

Cassini Imaging Science: Initial Results on Saturn's Atmosphere  

Science Journals Connector (OSTI)

...originating in the atmosphere and are probably caused...bursts—below 5 MHz—only when the...the ionospheric plasma density near the noon...3 , escape of atmospheric radio bursts below 5 MHz would be prevented...see Help with Printing for instructions...

C. C. Porco; E. Baker; J. Barbara; K. Beurle; A. Brahic; J. A. Burns; S. Charnoz; N. Cooper; D. D. Dawson; A. D. Del Genio; T. Denk; L. Dones; U. Dyudina; M. W. Evans; B. Giese; K. Grazier; P. Helfenstein; A. P. Ingersoll; R. A. Jacobson; T. V. Johnson; A. McEwen; C. D. Murray; G. Neukum; W. M. Owen; J. Perry; T. Roatsch; J. Spitale; S. Squyres; P. Thomas; M. Tiscareno; E. Turtle; A. R. Vasavada; J. Veverka; R. Wagner; R. West

2005-02-25T23:59:59.000Z

434

Method for Increasing Atmospheric Carbon Dioxide in Bacteriological Incubators  

Science Journals Connector (OSTI)

...Method for Increasing Atmospheric Carbon Dioxide in...Method for Increasing Atmospheric Carbon Dioxide in...experience with water-jacket incubators...that the area of water used be the maximum...does not create condensation. For culturing...was made of the recovery of Mycobacterium...

Alfred G. Karslon; Patrick E. Caskey

1969-07-01T23:59:59.000Z

435

Apparent Temperature Dependence on Localized Atmospheric Water Vapor  

E-Print Network [OSTI]

Apparent Temperature Dependence on Localized Atmospheric Water Vapor Matthew Montanaroa, Carl), hence water vapor is the primary constituent of concern. The tower generates a localized water vapor, Office B108, Aiken, SC, USA ABSTRACT The atmosphere is a critical factor in remote sensing. Radiance from

Salvaggio, Carl

436

Predicting mesh density for adaptive modelling of the global atmosphere  

Science Journals Connector (OSTI)

...under investigation for atmospheric modelling for some time...atmosphere, using the shallow water equations-a necessary...to solve the shallow water equations on fixed meshes...discussed in 3. The mesh generator and the predictive adaptive...Solving the shallow water equations on polygons...

2009-01-01T23:59:59.000Z

437

Old-field Community, Climate and Atmospheric Manipulation  

SciTech Connect (OSTI)

We are in the process of finishing a number of laboratory, growth chamber and greenhouse projects, analyzing data, and writing papers. The projects reported addressed these subjects: How do climate and atmospheric changes alter aboveground plant biomass and community structure; Effects of multiple climate changes factors on plant community composition and diversity: what did we learn from a 5-year open-top chamber experiment using constructed old-field communities; Do atmospheric and climatic change factors interact to alter woody seedling emergence, establishment and productivity; Soil moisture surpasses elevated CO{sub 2} and temperature in importance as a control on soil carbon dynamics; How do climate and atmospheric changes alter belowground root and fungal biomass; How do climate and atmospheric changes alter soil microarthropod and microbial communities; How do climate and atmospheric changes alter belowground microbial function; Linking root litter diversity and microbial functioning at a micro scale under current and projected CO{sub 2} concentrations; Multifactor climate change effects on soil ecosystem functioning depend on concurrent changes in plant community composition; How do climate and atmospheric changes alter aboveground insect populations; How do climate and atmospheric changes alter festuca endophyte infection; How do climate and atmospheric changes soil carbon stabilization.

Aimee Classen

2009-11-01T23:59:59.000Z

438

CIRES/CSD Research Associate Atmospheric/Physical Research Scientist  

E-Print Network [OSTI]

to address atmospheric problems of contemporary interest. A background in atmospheric science is not required or field environment. Experience with optics and optical sensors is highly desirable. Experience by contacting the ADA Coordinator at hr-ada@colorado.edu. The University of Colorado Boulder conducts background

Colorado at Boulder, University of

439

Nitrogen trifluoride global emissions estimated from updated atmospheric measurements  

E-Print Network [OSTI]

Nitrogen trifluoride global emissions estimated from updated atmospheric measurements Tim Arnolda,1's radiative budget; however, our understand- ing of its atmospheric burden and emission rates has been limited together with an atmo- spheric model and inverse method, we estimate that the global emissions of NF3

Severinghaus, Jeffrey P.

440

Computational Methods for Atmospheric Science, ATS607 Colorado State University  

E-Print Network [OSTI]

Computational Methods for Atmospheric Science, ATS607 Colorado State University Department of Atmospheric Science, Spring 2014 Wednesdays and Fridays @ 2:15 ­ 3:30 Room: ENGR Research Center (ERC://pierce.atmos.colostate.edu Office hours: During the lab classes or by appointment. Teaching assistant: Chris Slocum (cslocum

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

An Introduction to Nonequilibrium Plasmas at Atmospheric Pressure  

E-Print Network [OSTI]

1 1 An Introduction to Nonequilibrium Plasmas at Atmospheric Pressure Sander Nijdam, Eddie van;2 1 An Introduction to Nonequilibrium Plasmas at Atmospheric Pressure pulsed power source for ozone Veldhuizen, Peter Bruggeman, and Ute Ebert 1.1 Introduction 1.1.1 Nonthermal Plasmas and Electron Energy

Ebert, Ute

442

Atmospheric Plasma Deposited Dense Silica Coatings on Plastics  

Science Journals Connector (OSTI)

Atmospheric Plasma Deposited Dense Silica Coatings on Plastics ... (8) Finally, some plasma techniques including atmospheric plasmas work at low gas temperature, are suitable for treating plastics with low glass transition temperatures, and can even be used on biological samples. ... These results suggest that the mechanism in the atm.-pressure plasma is the same as that in low-pressure plasmas. ...

Linying Cui; Alpana N. Ranade; Marvi A. Matos; Liam S. Pingree; Theo J. Frot; Geraud Dubois; Reinhold H. Dauskardt

2012-11-26T23:59:59.000Z

443

Simple approaches for measuring dry atmospheric nitrogen deposition to watersheds  

E-Print Network [OSTI]

'' and spatial variations of gaseous dry N deposition (i.e., nitrogen dioxide (NO2) and ammonia (NH3)), thoughSimple approaches for measuring dry atmospheric nitrogen deposition to watersheds Heather E. Golden the effects of atmospheric nitrogen (N) deposition on surface water quality requires accurate accounts

Elliott, Emily M.

444

Thermal Infrared Radiation and Carbon Dioxide in the Atmosphere  

E-Print Network [OSTI]

dioxide Water vapor #12;Atmospheric composition (parts per million by volume) · Nitrogen (N2) 780Thermal Infrared Radiation and Carbon Dioxide in the Atmosphere Bill Satzer 3M Company #12;Outline,840 · Oxygen (O2) 209,460 · Argon (Ar) 9340 · Carbon dioxide (CO2) 394 · Methane (CH4) 1.79 · Ozone (O3) 0

Olver, Peter

445

School of Earth and Atmospheric Sciences Georgia Institute of Technology  

E-Print Network [OSTI]

of Earth and Atmospheric Sciences is to realize the vision through building pillars of excellence in the following three areas: · Breakthrough discoveries through research in earth and atmospheric sciences as well research to inform public policy, resource management, environmental sustainability, and economic

Weber, Rodney

446

Extended Canadian middle atmosphere model: zonal-mean climatology and  

E-Print Network [OSTI]

and data assimilation; 3334 Meteorology and Atmospheric Dynamics: Middle atmosphere dynamics (0341, 0342 the Upper Atmos- phere Research Satellite (UARS), such as the Wind Imaging Interferometer (WINDII) [Shepherd and Dynamics (TIMED) satellite. These observations have provided (or will provide) a unique set of information

Wirosoetisno, Djoko

447

EPS 22 The Fluid Earth: Oceans, Atmosphere, Climate & Environment  

E-Print Network [OSTI]

EPS 22 The Fluid Earth: Oceans, Atmosphere, Climate & Environment Spring 2012 Instructors: Steven Hall E Overview Description: EPS22 introduces students to the fluid earth, emphasizing Earth's weather is EPS22? A graphical representation of major topics. Current topics in atmospheric and ocean sciences

Huybers, Peter

448

Aero-Assisted Orbital Transfer Vehicles Utilizing Atmosphere Ingestion  

E-Print Network [OSTI]

Aero-Assisted Orbital Transfer Vehicles Utilizing Atmosphere Ingestion by THOMAS JOHN MC GUIRE B #12;2 Aero-Assisted Orbital Transfer Vehicles Utilizing Atmosphere Ingestion by: Thomas J. Mc Guire solar thermal orbital transfer vehicle from the Boeing company. Performance increases possible

449

Author's personal copy Solar modulation in surface atmospheric electricity  

E-Print Network [OSTI]

Author's personal copy Solar modulation in surface atmospheric electricity R. Giles Harrison a is the major source of air's electrical conductivity over the oceans and well above the continents atmospheric electrical circuit, including the local vertical current density and the related surface potential

Usoskin, Ilya G.

450

The middle-atmosphere Hadley circulation and equatorial inertial  

E-Print Network [OSTI]

The middle-atmosphere Hadley circulation and equatorial inertial adjustment 1234567 89A64BC7DEF72B4 S 2001 American Meteorological Society 3077 The Middle-Atmosphere Hadley Circulation and Equatorial toward a balanced state results in a type of Hadley circulation that lies outside the ``downward control

Wirosoetisno, Djoko

451

A Field Experiment to Validate Atmospheric Dispersion and  

E-Print Network [OSTI]

Rise-R.495 A Field Experiment to Validate Atmospheric Dispersion and Dose Models S. P. Nielsen* S Roskilde, Denmark May 1986 #12;RIS�-R-495 DOUBLE TRACER EXPERIMENTS TO EVALUATE ATMOSPHERIC TRANSPORT Pollution Laboratory, Risø National Laboratory, DK-4000 Roskilde, Denmark Abstract. Two tracers

452

On Adaptive Mesh Refinement for Atmospheric Pollution Models  

E-Print Network [OSTI]

On Adaptive Mesh Refinement for Atmospheric Pollution Models Emil M. Constantinescu and Adrian Springer-Verlag Berlin Heidelberg 2005 #12;On Adaptive Mesh Refinement for Atmospheric Pollution Models 799 res- olution system for modeling regional air pollution based on the chemical transport model STEM

Sandu, Adrian

453

Trans Boundary Transport of Pollutants by Atmospheric Mineral  

E-Print Network [OSTI]

Trans Boundary Transport of Pollutants by Atmospheric Mineral Dust Y I G A L E R E L , * , U R I D, and solid constituents in the atmosphere (3-11). Uptake of pollutants by mineral dust has been shown Jerusalem, Israel The transport of anthropogenic pollution by desert dust in the Eastern Mediterranean

Einat, Aharonov

454

Ris-R-1183(EN) Atmospheric Chemistry of  

E-Print Network [OSTI]

Risø-R-1183(EN) Atmospheric Chemistry of Polycyclic Aromatic Compounds with Special Emphasis as semi-rural air is atmospheric transformation of PAHs initiated by OH radicals. Especially during long-range transport (LRT) of air pollution from Central Europe, the nitro-PAH composition in Denmark is dominated

455

Engineering Identifying the source of an atmospheric pollutant  

E-Print Network [OSTI]

Chemical Engineering Abstract Identifying the source of an atmospheric pollutant or phenomena this question using combinations of atmospheric models and remote sensing observations will be presented challenge currently facing the US EPA in developing secondary standards for the control of this pollutant

456

Halocarbon and Other Atmospheric Trace Species (HATS) | Data.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Halocarbon and Other Atmospheric Trace Species (HATS) Halocarbon and Other Atmospheric Trace Species (HATS) Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS COLLABORATE ABOUT Agriculture You are here Data.gov » Communities » Agriculture » Data Halocarbon and Other Atmospheric Trace Species (HATS) Dataset Summary Description The general mission of the Halocarbons and other Atmospheric Trace Species group is to quantify the distributions and magnitudes of sources and sinks for atmospheric nitrous oxide (N2O) and halogen containing compounds. HATS utilizes numerous types of platforms, including ground-based stations, towers, ocean vessels, aircraft, and balloons, to accomplish its mission. For a detailed mission statement, consult our FAQ. Tags {"nitrous oxide","sulfur hexaflouride",CFC-11,CFC-12,CFC-113,CCl4,CH3CCl3,CH3Cl,halon-1211,HCFC-22,HCFC-142b,halocarbons,chromatograph,aircraft,balloons,vessels,ships,towers,"natural resources",environment,air,"GHG "}

457

ARM - PI Product - Atmospheric State, Cloud Microphysics & Radiative Flux  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ProductsAtmospheric State, Cloud Microphysics & ProductsAtmospheric State, Cloud Microphysics & Radiative Flux Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Atmospheric State, Cloud Microphysics & Radiative Flux 1997.01.01 - 2010.12.31 Site(s) NSA SGP TWP General Description This data product contains atmospheric thermodynamics, cloud properties, radiative fluxes and radiative heating rates. The data represent a characterization of the physical state of the atmospheric column compiled on a five-minute temporal and 90m vertical grid. Sources for this information include raw measurements, cloud property and radiative retrievals, retrievals and derived variables from other third-party sources, and radiative calculations using the derived quantities.

458

Modeling the effects of atmospheric emissions on groundwater composition  

SciTech Connect (OSTI)

A composite model of atmospheric, unsaturated and groundwater transport is developed to evaluate the processes determining the distribution of atmospherically derived contaminants in groundwater systems and to test the sensitivity of simulated contaminant concentrations to input parameters and model linkages. One application is to screen specific atmospheric emissions for their potential in determining groundwater age. Temporal changes in atmospheric emissions could provide a recognizable pattern in the groundwater system. The model also provides a way for quantifying the significance of uncertainties in the tracer source term and transport parameters on the contaminant distribution in the groundwater system, an essential step in using the distribution of contaminants from local, point source atmospheric emissions to examine conceptual models of groundwater flow and transport.

Brown, T.J.

1994-12-31T23:59:59.000Z

459

Atmospheric Science and Climate Research [EVS Program Area]  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Atmospheric Science and Climate Research Atmospheric Science and Climate Research EVS research, combined with portable, high-performance climate and weather applications, offers a unique look at the complexities of a dynamic planet. In an ever-changing, dynamic climate, we measure, model, and analyze atmospheric processes that are vital to understanding our planet. Our measurement capabilities range from remote sensing and surface meteorology instruments to instrumentation designed to quantify the land-atmosphere exchange of energy, water, and greenhouse gases. Modeling capabilities begin with regional-scale climate, air quality, and aerosol modeling and extend to global chemical transport models, general circulation models of the atmosphere, models of the biosphere, and coupled Earth system models.

460

Electron muon identification by atmospheric shower and electron beam in a new concept of an EAS detector  

E-Print Network [OSTI]

We present results demonstrating the time resolution and $\\mu$/e separation capabilities with a new concept of an EAS detector capable for measurements of cosmic rays arriving with large zenith angles. This kind of detector has been designed to be a part of a large area (several square kilometers) surface array designed to measure Ultra High Energy (10-200 PeV) $\\tau$ neutrinos using the Earth-skimming technique. A criteria to identify electron-gammas is also shown and the particle identification capability is tested by measurements in coincidence with the KASKADE-GRANDE experiment in Karlsruhe, Germany.

Iori, M; Yilmaz, A; Ferrarotto, F; Russ, J

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Strategic Environmental Research and Development Program: Atmospheric Remote Sensing and Assessment Program -- Final Report. Part 1: The lower atmosphere  

SciTech Connect (OSTI)

This report documents work done between FY91 and FY95 for the lower atmospheric portion of the joint Department of Defense (DoD) and Department of Energy (DOE) Atmospheric Remote Sensing and Assessment Program (ARSAP) within the Strategic Environmental Research and Development Program (SERDP). The work focused on (1) developing new measurement capabilities and (2) measuring atmospheric heating in a well-defined layer and then relating it to cloud properties an water vapor content. Seven new instruments were develop3ed for use with Unmanned Aerospace Vehicles (UAVs) as the host platform for flux, radiance, cloud, and water vapor measurements. Four major field campaigns were undertaken to use these new as well as existing instruments to make critically needed atmospheric measurements. Scientific results include the profiling of clear sky fluxes from near surface to 14 km and the strong indication of cloudy atmosphere absorption of solar radiation considerably greater than predicted by extant models.

Tooman, T.P. [ed.] [Sandia National Labs., Livermore, CA (United States). Exploratory Systems Technology Dept.

1997-01-01T23:59:59.000Z

462

Steam atmosphere drying exhaust steam recompression system  

DOE Patents [OSTI]

This invention relates to a heated steam atmosphere drying system comprising dryer in combination with an exhaust recompression system which is extremely energy efficient and eliminates dangers known to air dryers. The system uses superheated steam as the drying medium, which recirculates through the system where its heat of evaporation and heat of compression is recovered, thereby providing a constant source of heat to the drying chamber. The dryer has inlets whereby feedstock and superheated steam are fed therein. High heat transfer and drying rates are achieved by intimate contact of the superheated steam with the particles being dried. The dryer comprises a vessel which enables the feedstock and steam to enter and recirculate together. When the feedstock becomes dry it will exit the dryer with the steam and become separated from the steam through the use of a curvilinear louver separator (CLS). The CLS enables removal of fine and ultrafine particles from the dryer. Water vapor separated from the particles in the CLS as superheated steam, may then be recovered and recirculated as steam through the use of a compressor to either directly or indirectly heat the dryer, and a heat exchanger or a heater to directly provide heat to the dryer. This system not only provides a very efficient heat transfer system but results in a minimum carry-over of ultrafine particles thereby eliminating any explosive hazard. 17 figures.

Becker, F.E.; Smolensky, L.A.; Doyle, E.F.; DiBella, F.A.

1994-03-08T23:59:59.000Z

463

Anomalous atmospheric hydrologic processes associated with ENSO  

SciTech Connect (OSTI)

In this paper, we study the structure of anomalous atmospheric hydrologic processes associated with El Nino Southern Oscillation (ENSO) using re-analysis data obtained from the Goddard Earth Observing System (GEOS) Data Assimilation Office (DAO) and outputs from GEOS climate model simulations. Our results show a very pronounced tropospheric warming over the equatorial central Pacific, with a double maxima located in 15{degrees}N and 15{degrees}/S, symmetric about the equator. This anomaly is in agreement with those found in earlier studies based on satellite estimates and is consistent with the predictions of Rossby wave dynamics. Most interestingly, we find a strong stratospheric temperature signal, which is tightly coupled to, but of opposite sign to the tropospheric anomaly. This temperature anomaly pattern is validated by the GCM simulations with respect to anomalous ENSO sea surface temperature (SST) forcing. The role of interaction between radiation and hydrologic cycle in producing and maintaining the ENSO anomalies is also investigated. 8 refs., 4 figs.

Lau, K.M.; Ho, C.H. [NASA/Goddard Space Flight Center, Greenbelt, MD (United States)

1997-11-01T23:59:59.000Z

464

Modeling atmospheric deposition using a stochastic transport model  

SciTech Connect (OSTI)

An advanced stochastic transport model has been modified to include the removal mechanisms of dry and wet deposition. Time-dependent wind and turbulence fields are generated with a prognostic mesoscale numerical model and are used to advect and disperse individually released particles that are each assigned a mass. These particles are subjected to mass reduction in two ways depending on their physical location. Particles near the surface experience a decrease in mass using the concept of a dry deposition velocity, while the mass of particles located within areas of precipitation are depleted using a scavenging coefficient. Two levels of complexity are incorporated into the particle model. The simple case assumes constant values of dry deposition velocity and scavenging coefficient, while the more complex case varies the values according to meteorology, surface conditions, release material, and precipitation intensity. Instantaneous and cumulative dry and wet deposition are determined from the mass loss due to these physical mechanisms. A useful means of validating the model results is with data available from a recent accidental release of Cesium-137 from a steel-processing furnace in Algeciras, Spain in May, 1998. This paper describes the deposition modeling technique, as well as a comparison of simulated concentration and deposition with measurements taken for the Algeciras release.

Buckley, R.L.

1999-12-17T23:59:59.000Z

465

Sound Waves in the Atmosphere at Infrasonic Frequencies  

Science Journals Connector (OSTI)

Various geophysical processes generate sound waves in the atmosphere. Some typical sources are auroral discharges in the upper atmosphere tornadoes and severe storms surface waves on the oceans volcanic explosions earthquakes and atmospheric oscillations arising from unstable wind flow at the tropopause. Man?made sources include powerful explosions and the shock waves from vehicles moving at supersonic speeds at altitudes below about 125 km. The components of sound?wave energy at infrasonic frequencies (oscillation periods >1.0 sec) are propagated for large distances (thousands of kilometers) over the earth's surface with very little loss of energy from absorption by viscosity and heat conduction. But the propagation depends strongly on (a) the horizontally stratified temperature structure of the atmosphere (b) the influence of gravity at oscillation periods greater than the atmospheric resonance period ?300 sec and (c) the nonuniform distribution of atmospheric winds. The microphones and electroacoustical apparatus at an infrasonics observation station e.g. the one at Washington D. C. measure (1) the amplitude and waveform of incident sound pressure (2) the direction of local propagation of the wave (3) the horizontal trace velocity and (4) the distribution of sound wave energy at various oscillation frequencies. Researches on propagation require observational data from a network of stations separated geographically by large distances coupled with theoretical analysis of sound propagation to arrive at useful results on the acoustics of the atmosphere.

Richard K. Cook

1972-01-01T23:59:59.000Z

466

Condensation of Atmospheric Moisture from Tropical Maritime Air Masses as a Freshwater Resource  

Science Journals Connector (OSTI)

...1965 ). Condensation of atmospheric moisture from...whereby potable water may be obtained...system of atmospheric moisture recovery that we propose...of fresh water per day...readily use the atmospheric water recovery method. We...

Robert D. Gerard; J. Lamar Worzel

1967-09-15T23:59:59.000Z

467

Atmospheric Pressure Photoionization Applied to Quantitation of Cyproterone Acetate in Human Plasma  

Science Journals Connector (OSTI)

......research-article Articles Atmospheric Pressure Photoionization...Acetate in Human Plasma Alberto S. Pereira...100 mg). Atmospheric pressure photoionization...acetate in human plasma. | Cyproterone...acetate in human plasma. This 513 Abstract Atmospheric Pressure Photoionization......

Alberto S. Pereira; Gustavo D. Mendes; Lina S.O.B. Oliveira; Hugo F. Valle; Gilberto De Nucci

468

METR 3223: Physical Meteorology II: Cloud Physics, Atmospheric Electricity and Optics  

E-Print Network [OSTI]

METR 3223: Physical Meteorology II: Cloud Physics, Atmospheric Electricity and Optics CLASS: Monday as atmospheric electricity and optics. Specific topics that will be covered are as follows: Cloud physics: Review Observation studies Atmospheric electricity: Electrostatics Electromagnetic wave Thunderstorm charging

Droegemeier, Kelvin K.

469

Locating Nearby Sources of Air Pollution by Nonparametric Regression of Atmospheric Concentrations on Wind Direction  

E-Print Network [OSTI]

Locating Nearby Sources of Air Pollution by Nonparametric Regression of Atmospheric Concentrations. #12;1 Locating Nearby Sources of Air Pollution by Nonparametric Regression of Atmospheric. * Corresponding author. Submitted to Atmospheric Environment July, 2001. Abstract The relationship

Washington at Seattle, University of

470

Hydrogen in the atmosphere: Observations above a forest canopy in a polluted environment  

E-Print Network [OSTI]

Hydrogen in the atmosphere: Observations above a forest canopy in a polluted environment Diana H and Structure: Pollution--urban and regional (0305); 0365 Atmospheric Composition and Structure: Troposphere. Novelli Climate Monitoring and Diagnostics Laboratory, National Oceanic and Atmospheric Administration

471

alberta-98.pdf  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

profiles are based on the National Weather Service (NWS) Eta mesoscale model Data Assimilation System (EDAS), which used standard 12-hourly radiosondes; 3) the "atmospheric...

472

ARM Site Atmospheric State Best Estimates for AIRS Validation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Site Atmospheric State Best Estimates Site Atmospheric State Best Estimates for AIRS Validation D. C. Tobin, H. E. Revercomb, W. F. Feltz, R. D. Knuteson, and D. D. Turner Space Science and Engineering Center University of Wisconsin-Madison Madison, Wisconsin B. M. Lesht Environmental Research Division Argonne National Laboratory Argonne, Illinois L. Strow University of Maryland College Park, Maryland C. Barnet Joint Center for Earth Systems Technology Baltimore, Maryland E. Fetzer National Aeronautics Space Administration Jet Propulsion Laboratory Pasadena, California Introduction The atmospheric infrared sounder (AIRS) is a high spectral resolution infrared sounder on the earth observing plan (EOS) Aqua platform. Temperature and water vapor profile retrievals from AIRS are

473

Laser beam self-focusing in the atmosphere  

SciTech Connect (OSTI)

We propose to exploit a self-focusing effect in the atmosphere to assist delivering powerful laser beams from orbit to the ground. We demonstrate through numerical modeling that if the self-focusing length is comparable with the atmosphere height the self-focusing can reduce the spot size on the ground well below the diffraction limited one without beam quality degradation. The use of light self-focusing in the atmosphere can greatly relax the requirements for the orbital optics and ground receivers.

Rubenchik, A M; Fedoruk, M P; Turitsyn, S K

2008-09-09T23:59:59.000Z

474

A Coupled Model Study on the Formation and Dissipation of Sea Fogs  

Science Journals Connector (OSTI)

This study examined the impact of air–sea coupling using a coupled atmosphere–ocean modeling system consisting of the Coupled Ocean–Atmosphere Mesoscale Prediction System as the atmospheric component and the Regional Ocean Modeling System as the ...

Ki-Young Heo; Kyung-Ja Ha

2010-04-01T23:59:59.000Z

475

The Southern Ocean in the Coupled Model Intercomparison Project phase 5  

Science Journals Connector (OSTI)

...atmosphere and ocean (although the ocean remains too coarse to permit mesoscale eddies), a larger proportion of full Earth system models (ESMs) resolving biogeochemical cycles, the inclusion of atmospheric ozone in all models and more complete atmospheric...

2014-01-01T23:59:59.000Z

476

Transport Processes in the Tropical Warm Pool Boundary Layer. Part II: Vertical Structure and Variability  

Science Journals Connector (OSTI)

The structure of the intertropical convergence zone ITCZ cloud-topped marine atmospheric boundary layer away from the most intense mesoscale convective systems during the Tropical Ocean Global Atmosphere Coupled Ocean–Atmosphere Response ...

A. G. Williams; J. M. Hacker; H. Kraus

1997-08-01T23:59:59.000Z

477

Atmospheric process evaluation of mobile source emissions  

SciTech Connect (OSTI)

During the past two decades there has been a considerable effort in the US to develop and introduce an alternative to the use of gasoline and conventional diesel fuel for transportation. The primary motives for this effort have been twofold: energy security and improvement in air quality, most notably ozone, or smog. The anticipated improvement in air quality is associated with a decrease in the atmospheric reactivity, and sometimes a decrease in the mass emission rate, of the organic gas and NO{sub x} emissions from alternative fuels when compared to conventional transportation fuels. Quantification of these air quality impacts is a prerequisite to decisions on adopting alternative fuels. The purpose of this report is to present a critical review of the procedures and data base used to assess the impact on ambient air quality of mobile source emissions from alternative and conventional transportation fuels and to make recommendations as to how this process can be improved. Alternative transportation fuels are defined as methanol, ethanol, CNG, LPG, and reformulated gasoline. Most of the discussion centers on light-duty AFVs operating on these fuels. Other advanced transportation technologies and fuels such as hydrogen, electric vehicles, and fuel cells, will not be discussed. However, the issues raised herein can also be applied to these technologies and other classes of vehicles, such as heavy-duty diesels (HDDs). An evaluation of the overall impact of AFVs on society requires consideration of a number of complex issues. It involves the development of new vehicle technology associated with engines, fuel systems, and emission control technology; the implementation of the necessary fuel infrastructure; and an appropriate understanding of the economic, health, safety, and environmental impacts associated with the use of these fuels. This report addresses the steps necessary to properly evaluate the impact of AFVs on ozone air quality.

NONE

1995-07-01T23:59:59.000Z

478

E-Print Network 3.0 - atmospheric pollutant concentrations Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

sunlight, and natural atmospheric gases. Primary and secondary pollutants 12;Air Pollutants 12... , an atmospheric inversion occurs that can restrict circulation in...

479

E-Print Network 3.0 - atmospheric pollution study Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

sunlight, and natural atmospheric gases. Primary and secondary pollutants 12;Air Pollutants 12... , an atmospheric inversion occurs that can restrict circulation in the lower...

480

E-Print Network 3.0 - atmospheric source observations Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wien Collection: Geosciences 2 PLANETARY ATMOSPHERES Winter 2003 (ATMS 555ASTR 555, ESS 581) Summary: in planetary atmospheres (Earth, Venus; Mars as a case study). Methane on...

Note: This page contains sample records for the topic "karlsruhe atmospheric mesoscale" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

E-Print Network 3.0 - atmospheric pb deposition Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Atmospheric Pollution... 6 2.0 Sources and Deposition of Trace Metals Trace elements enter the atmosphere via both natural... ANTHROPOGENICNATURAL 12;Chapter 2: Sources and...

482

E-Print Network 3.0 - atmospheric bulk deposition Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Atmospheric Pollution... 6 2.0 Sources and Deposition of Trace Metals Trace elements enter the atmosphere via both natural... ANTHROPOGENICNATURAL 12;Chapter 2: Sources and...

483

E-Print Network 3.0 - atmospheric diffusion experiments Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

technical coupling software... linking the main model components of present-day Earth System models (ESMs), i.e. the atmosphere... be followed to couple ocean and atmosphere...

484

E-Print Network 3.0 - atmospheric dust dispersion Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

residence time of the dust in the atmosphere... - tribution of dust transport and resuspension to particulate matter levels in the Mediterranean atmosphere... ), Saharan dust in...

485

E-Print Network 3.0 - atmospheric plasma jet Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

University Collection: Engineering 2 Atmospheric Pressure Plasma Jet Treatment of Polyethylene Surfaces for Summary: Atmospheric Pressure Plasma Jet Treatment of Polyethylene...

486

Simulation of Atmospheric Pressure Non-Thermal Plasma Discharges for Surface Decontamination Applications  

Science Journals Connector (OSTI)

Numerical simulations are conducted to characterize atmospheric pressure plasma discharges for surface decontamination applications. A self ... dimensional hybrid model is developed to simulate the atmospheric pr...

T. Farouk; B. Farouk; A. Gutsol; A. Fridman

2008-01-01T23:59:59.000Z

487

E-Print Network 3.0 - atmospheric pb emissions Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Environmental Sciences and Ecology 10 European Atmospheric Pollution Imported by Cooler Air Masses to Summary: European Atmospheric Pollution Imported by Cooler Air Masses to the...

488

C.3 SOLAR SYSTEM WORKINGS The Solar System Workings program element supports research into atmospheric, climatological,  

E-Print Network [OSTI]

into atmospheric, climatological, dynamical, geologic, geophysical, and geochemical processes occurring proposals for innovative scientific research related to understanding the atmospheric, climatological

Rathbun, Julie A.

489

E-Print Network 3.0 - atmospheric circulation related Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

is influenced by the oceanic and atmospheric circulations... -surface temperature, ocean currents and atmospheric circulation patterns. In a paper by Delworth et al....

490

E-Print Network 3.0 - atmospheric material particles Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

MECHANICAL AND AEROSPACE ENGINEERING COLLOQUIUM SERIES Atmospheric Aerosols: Linking Air Pollution... Earth's atmosphere with sulfur to cool down the earth? Is this true that...

491

E-Print Network 3.0 - atmospheric models testing Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Tectonics (COMET) Collection: Geosciences 7 BTRAM: An Interactive Atmospheric Radiative Transfer Model I.M. Chapman1 Summary: BTRAM: An Interactive Atmospheric Radiative...

492

E-Print Network 3.0 - atmospheric test models Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Tectonics (COMET) Collection: Geosciences 7 BTRAM: An Interactive Atmospheric Radiative Transfer Model I.M. Chapman1 Summary: BTRAM: An Interactive Atmospheric Radiative...

493

E-Print Network 3.0 - atmospheric administration key Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oceanic and Atmospheric Administration (NOAA) proposal (south Florida) and that such seafood... for Oceans and Atmosphere and Administrator ... Source: National Oceanic and...

494

E-Print Network 3.0 - atmospheric administration noaa Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Atmospheric Administration (NOAA) proposal (Florida panhandle) and that such seafood should pose no food... Marine Fisheries Service National Oceanic and Atmospheric...

495

E-Print Network 3.0 - atmospheric deposition program Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and atmospheric deposition. It is removed via N2... discharges from wastewater treatment, atmospheric ... Source: Pedersen, Tom - Pacific Institute for Climate Solutions,...

496

E-Print Network 3.0 - atmospheric pressure interface Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

dynamically induced horizontal static pressure gradients at the surface-atmosphere interface (Waddington et al... role of pressure pumping due to atmospheric pressure...

497

E-Print Network 3.0 - atmospheric pressure helium-oxygen Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Copyright permission to reproduce figures andor text from this article 12;Remote Atmospheric-Pressure... ) were treated with an atmospheric-pressure oxygen and...

498

E-Print Network 3.0 - atmospheres inflammabilite du Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

mechanisms and source characterization Summary: atmosphere and then revealed to remote sensing by their interaction with the ionosphere. Such acousticgravity... atmosphere...

499

E-Print Network 3.0 - atmosphere model version Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

coupling software Summary: linking the main model components of present-day Earth System models (ESMs), i.e. the atmosphere... be followed to couple ocean and atmosphere...

500

E-Print Network 3.0 - atmospheric models final Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

coupling software Summary: linking the main model components of present-day Earth System models (ESMs), i.e. the atmosphere... be followed to couple ocean and atmosphere...