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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

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

2

Better Thermodynamics Teaching Needs More Thermodynamics Research  

Science Journals Connector (OSTI)

There is a limit to the number of possible explanations of why engineering students should find thermodynamics difficult to understand.

J. R. Himsworth

1985-01-01T23:59:59.000Z

3

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

4

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.

5

Global Thermodynamic Atmospheric Modeling: Search for NewHeterogeneous Reactions  

SciTech Connect (OSTI)

This article demonstrates quantitatively how far reactions are from chemical equilibrium over the full space of a two-dimensional atmospheric model. This method could be used with data where an instrument-equipped aircraft measures numerous species simultaneously, An atmospheric reaction is displaced from equilibrium by solar radiation and relocation of species by atmospheric motions. One purpose of this study is to seek additional stratospheric or tropospheric gas-phase chemical reactions that might undergo heterogeneous catalysis. Hypothetical cases can be rapidly screened in terms of their thermodynamic potential to react under measured or modeled atmospheric conditions of temperature and local species concentrations. If a reaction is interesting, is slow in the gas phase, and has a high thermodynamic tendency to react, it is a good candidate for a laboratory study to seek a heterogeneous catalyst, if the reaction is thermodynamically unfavorable, there is no catalyst that can cause the reaction to occur. If a reaction is thermodynamically favored to occur but also endothermic, it will tend to be slow at stratospheric temperatures. We find, as expected, that four heterogeneous reactions important in causing the Antarctic ''ozone hole'' have high thermodynamic tendencies to occur under atmospheric conditions, but one of these is only weakly thermodynamically allowed in some regions of the atmosphere. The reaction of SO2 and HNO3 to form HONO has a high thermodynamic potential to occur, is a well-known laboratory reaction at ice temperature, and may occur in nitric acid-rich sulfate aerosols. Throughout the troposphere and stratosphere, we find that formaldehyde has an extremely high thermodynamic potential to reduce nitric acid. Formaldehyde is known to stick to and remain in sulfuric acid solution, where it adds water to form H2C(OH)(2). Near room-temperature H2C(OH)(2) reacts with nitric acid in a two-step mechanism to form two molecules of HONO, but the rate of this process under conditions of stratospheric sulfuric acid aerosols is unknown.

Fairbrother, D.H.; Sullivan, D.S.D.; Johnston, H.S.

1997-07-03T23:59:59.000Z

6

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

7

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

8

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

9

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.

10

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

11

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

12

Research Highlight  

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

Environmental Thermodynamics Affect Radiative Impact of Deep Convective Cloud Systems Submitter: Jensen, M., Brookhaven National Laboratory Area of Research: Atmospheric...

13

MULTISPECTRAL SYNTHETIC SCENE GENERATION USING ATMOSPHERIC PROPAGATION AND THERMODYNAMIC MODELS  

E-Print Network [OSTI]

of the Central Intelligence Agency, the US Department of Energy, NASA's Jet Propulsion Laboratory, ITEK a requirement. This document represents the current status of a first-principles physics-based synthetic image behavior in a natural environment, and the propagation of energy through the atmosphere. The model

Salvaggio, Carl

14

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

15

JournalofGeophysicalResearch: Atmospheres RESEARCH ARTICLE  

E-Print Network [OSTI]

National Institute of Polar Research, Tachikawa, Japan, 5Physics and Astronomy, Ohio Wesleyan University

Vadas, Sharon

16

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

17

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.

18

Thermodynamics  

Science Journals Connector (OSTI)

... Physical Chemistry: an Advanced Treatise. Vol. 1. Thermodynamics. Edited by Henry Eyring, Douglas Henderson and Wilhelm Jost. Pp. xxii + 659 ... advanced treatise have already appeared and have been well received. The present volume deals with thermodynamics. It is, however, neither a "basic" volume for the whole treatise nor ...

D. H. EVERETT

1972-12-01T23:59:59.000Z

19

The Impact of Oceanic Heat Transport on the Atmospheric Circulation: a Thermodynamic Perspective  

E-Print Network [OSTI]

The present study investigates how global thermodynamic properties of the climate system are affected by the changes in the intensity of the imposed oceanic heat transport in an atmospheric general circulation model in aqua-planet configuration. Increasing the poleward oceanic heat transport results in an overall increase in the surface temperature and a decrease in the equator-to-pole surface temperature difference as a result of the ice-albedo feedback. Following the classical ansatz by Stone, the atmospheric heat transport changes in such a way that the total poleward heat transport remains almost unchanged. We also find that the efficiency of the climate machine, the intensity of the Lorenz energy cycle and the material entropy production of the system decline with increased oceanic heat transport which suggests that the climate system becomes less efficient and turns into a state of reduced entropy production, as the enhanced oceanic transport performs a stronger large-scale mixing between geophysical fl...

Schröder, Alexander; Lunkeit, Frank

2014-01-01T23:59:59.000Z

20

Research Highlight  

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

A., Pacific Northwest National Laboratory Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Life Cycle Journal Reference:...

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Research Highlight  

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

Schween, J. H., Inst. of Geophysics and Meteorology Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Properties Journal Reference:...

22

Research Highlight  

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

Xie, S., Lawrence Livermore National Laboratory Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Modeling Journal Reference: Xie S,...

23

Research Highlight  

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

A., Pacific Northwest National Laboratory Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud-Aerosol-Precipitation Interactions...

24

Research Highlight  

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

of Maryland Sawyer, V. R., University of Maryland Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud-Aerosol-Precipitation Interactions...

25

Research Highlight  

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

Xie, S., Lawrence Livermore National Laboratory Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Life Cycle Journal Reference: Xie...

26

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

27

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

28

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.

29

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

30

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

31

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

32

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

33

RESEARCH TRAINING GROUP GRK 1095/1: "AERO-THERMODYNAMIC DESIGN OF A SCRAMJET PROPULSION SYSTEM"  

E-Print Network [OSTI]

RESEARCH TRAINING GROUP GRK 1095/1: "AERO-THERMODYNAMIC DESIGN OF A SCRAMJET PROPULSION SYSTEM" U conception. In this context only the use of a scramjet-propulsion system meets all the aerodynamic it must be mentioned that scramjet-technologies are one of the key technologies for hypersonic flight

34

Clear Skies S. A. Clough Atmospheric and Environmental Research, Inc.  

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

S. A. Clough S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, MA 02139 The objective of this research effort is to develop radiative transfer models that are consistent with Atmospheric Radiation Measurement (ARM) Program spectral radiance measurements for clear and cloudy atmospheres. Our approach is to develop the model physics and related databases with a line-by-line model in the context of available spectral radiance measurements. The line-by- line mode! then functions as an intermediate standard to both develop and validate rapid radiative transfer models appropriate to GCM applications. consistent with downlooking data taken with the high spectral resolution interferometer sounder (HIS) (Smith et al. 1983) from 20 km and with simultaneous data taken

35

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.

36

Atmospheric Sciences Program summaries of research in FY 1993  

SciTech Connect (OSTI)

This document describes the activities and products of the Atmospheric Science Program of the Environmental Sciences Division, Office of Health and Environmental Research, Office of Energy Research, in FY 1993. Each description contains the project`s title; three-year funding history; the contract period over which the funding applies; the name(s) of the principal investigator(s); the institution(s) conducting the projects; and the project`s objectives, products, approach, and results to date. Project descriptions are categorized within the report according to program areas: atmospheric chemistry, atmospheric dynamics, and support operations. Within these categories, the descriptions are ordered alphabetically by principal investigator. Each program area is preceded by a brief text that defines the program area, states its goals and objectives, lists principal research questions, and identifies program managers. Appendixes provide the addresses and telephone numbers of the principal investigators and define the acronyms used. This document has been indexed to aid the reader in locating research topics, participants, and research institutions in the text and the project descriptions. Comprehensive subject, principal investigator, and institution indexes are provided at the end of the text for this purpose. The comprehensive subject index includes keywords from the introduction and chapter texts in addition to those from the project descriptions.

Not Available

1993-11-01T23:59:59.000Z

37

Evolving research directions in Surface OceanLower Atmosphere (SOLAS) science  

E-Print Network [OSTI]

Evolving research directions in Surface Ocean­Lower Atmosphere (SOLAS) science Cliff S. Law. Understanding the exchange of energy, gases and particles at the ocean­atmosphere interface is critical­Lower Atmosphere Study (SOLAS) coordinates multi-disciplinary ocean­ atmosphere research projects that quantify

38

Atmospheric Radiation Measurement Climate Research Facility (ACRF) Annual Report 2008  

SciTech Connect (OSTI)

The Importance of Clouds and Radiation for Climate Change: The Earth’s surface temperature is determined by the balance between incoming solar radiation and thermal (or infrared) radiation emitted by the Earth back to space. Changes in atmospheric composition, including greenhouse gases, clouds, and aerosols, can alter this balance and produce significant climate change. Global climate models (GCMs) are the primary tool for quantifying future climate change; however, there remain significant uncertainties in the GCM treatment of clouds, aerosol, and their effects on the Earth’s energy balance. In 1989, the U.S. Department of Energy (DOE) Office of Science created the Atmospheric Radiation Measurement (ARM) Program to address scientific uncertainties related to global climate change, with a specific focus on the crucial role of clouds and their influence on the transfer of radiation in the atmosphere. To reduce these scientific uncertainties, the ARM Program uses a unique twopronged approach: • The ARM Climate Research Facility, a scientific user facility for obtaining long-term measurements of radiative fluxes, cloud and aerosol properties, and related atmospheric characteristics in diverse climate regimes; and • The ARM Science Program, focused on the analysis of ACRF and other data to address climate science issues associated with clouds, aerosols, and radiation, and to improve GCMs. This report provides an overview of each of these components and a sample of achievements for each in fiscal year (FY) 2008.

LR Roeder

2008-12-01T23:59:59.000Z

39

Z .Atmospheric Research 4748 1998 6986 Some effects of cloud turbulence on waterice and  

E-Print Network [OSTI]

investi- Z Z .gators' attention see a special issue of Atmospheric Research, 40 1996 and an . Zoverview

Mark, Pinsky

40

Atmospheric Science Program. Summaries of research in FY 1994  

SciTech Connect (OSTI)

This report provides descriptions for all projects funded by ESD under annual contracts in FY 1994. Each description contains the project`s title; three-year funding history (in thousands of dollars); the contract period over which the funding applies; the name(s) of the principal investigator(s); the institution(s) conducting the projects; and the project`s objectives, products, approach, and results to date (for most projects older than one year). Project descriptions are categorized within the report according to program areas: atmospheric chemistry, atmospheric dynamics, and support operations. Within these categories, the descriptions are ordered alphabetically by principal investigator. Each program area is preceded by a brief text that defines the program area, states it goals and objectives, lists principal research questions, and identifies program managers. Appendixes provide the addresses and telephone numbers of the principal investigators and define the acronyms used.

NONE

1995-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

E-Print Network 3.0 - atmospheric research community Sample Search...  

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

THEODORE KIEHL DATE AND PLACE OF BIRTH: 10 June 1952 Summary: University of New York, Albany (Atmospheric Science) RESEARCH POSITIONS: 1975 - 1977 Research Assistant, High......

42

Atmospheric Radiation Measurement Program Climate Research Facility Operations  

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

8 8 Atmospheric Radiation Measurement Program Climate Research Facility Operations Quarterly Report January 1-March 31, 2011 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 necessarily constitute or imply its endorsement, recommendation, or

43

Atmospheric Radiation Measurement Program Climate Research Facility Operations  

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

1 1 Atmospheric Radiation Measurement Climate Research Facility Operations Quarterly Report October 1-December 31, 2011 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 necessarily constitute or imply its endorsement, recommendation, or

44

Atmospheric Radiation Measurement Program Climate Research Facility Operations  

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

7 7 Atmospheric Radiation Measurement Climate Research Facility Operations Quarterly Report January 1-March 31, 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 necessarily constitute or imply its endorsement, recommendation, or

45

Atmospheric System Research (ASR) Program | U.S. DOE Office of Science (SC)  

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

» Atmospheric System Research (ASR) » Atmospheric System Research (ASR) Program Biological and Environmental Research (BER) BER Home About Research Research Abstracts Searchable Archive of BER Highlights External link Biological Systems Science Division (BSSD) Climate and Environmental Sciences Division (CESD) ARM Climate Research Facility Atmospheric System Research (ASR) Program Data Management Earth System Modeling (ESM) Program William R. Wiley Environmental Molecular Sciences Laboratory (EMSL) Integrated Assessment of Global Climate Change Regional & Global Climate Modeling (RGCM) Program Subsurface Biogeochemical Research Terrestrial Carbon Sequestration External link Terrestrial Ecosystem Science Facilities Science Highlights Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC)

46

68 Current projects Atmospheric Research The research of the Division focuses on land-  

E-Print Network [OSTI]

scintillometer remote sensing device), and airplane and satellite observations. Airplane based sensible heat flux Research. This national observatory accommodates numerous remote sensing and in-situ instruments brought of the atmosphere landsurface exchange budgets of relevant constituents (heat, moisture, carbon dioxide) can

Haak, Hein

47

Atmospheric Radiation Measurement Climate Research Facility (ACRF) Annual Report 2007  

SciTech Connect (OSTI)

This annual report describes the purpose and structure of the program, and presents key accomplishments in 2007. Notable achievements include: • Successful review of the ACRF as a user facility by the DOE Biological and Environmental Research Advisory Committee. The subcommittee reinforced the importance of the scientific impacts of this facility, and its value for the international research community. • Leadership of the Cloud Land Surface Interaction Campaign. This multi-agency, interdisciplinary field campaign involved enhanced surface instrumentation at the ACRF Southern Great Plains site and, in concert with the Cumulus Humilis Aerosol Processing Study sponsored by the DOE Atmospheric Science Program, coordination of nine aircraft through the ARM Aerial Vehicles Program. • Successful deployment of the ARM Mobile Facility in Germany, including hosting nearly a dozen guest instruments and drawing almost 5000 visitors to the site. • Key advancements in the representation of radiative transfer in weather forecast models from the European Centre for Medium-Range Weather Forecasts. • Development of several new enhanced data sets, ranging from best estimate surface radiation measurements from multiple sensors at all ACRF sites to the extension of time-height cloud occurrence profiles to Niamey, Niger, Africa. • Publication of three research papers in a single issue (February 2007) of the Bulletin of the American Meteorological Society.

LR Roeder

2007-12-01T23:59:59.000Z

48

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

49

Research Highlight  

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

Improved Daytime Precipitable Water Vapor from Vaisala Radiosonde Humidity Improved Daytime Precipitable Water Vapor from Vaisala Radiosonde Humidity Sensors Download a printable PDF Submitter: Cady-Pereira, K. E., Atmospheric and Environmental Research, Inc. Mlawer, E. J., Atmospheric & Environmental Research, Inc. Turner, D. D., National Oceanic and Atmospheric Administration Shephard, M. W., Atmospheric and Environmental Research, Inc. Clough, S. A., Atmospheric and Environmental Research, Inc. Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Radiative Processes Journal Reference: Cady-Pereira, K, M Shephard, E Mlawer, D Turner, S Clough, and T Wagner. 2008. "Improved daytime column-integrated precipitable water vapor from Vaisala radiosonde humidity sensors." Journal of Atmospheric and Oceanic Technology doi: 10.1175/2007JTECHA1027.1.

50

The Campaign on atmospheric Aerosol REsearch network of China: CARE-China  

Science Journals Connector (OSTI)

Based on a network of field stations belonging to the Chinese Academy of Sciences (CAS), the “Campaign on atmospheric Aerosol REsearch” network of China (CARE-China) was recently established as the country's first monitoring network for the study ...

Yuesi Wang; Jinyuan Xin; Yuepeng Pan; Dongsheng Ji; Zirui Liu; Tianxue Wen; Yinghong Wang; Xingru Li; Yang Sun; Jie Sun; Pucai Wang; Gehui Wang; Xinming Wang; Zhiyuan Cong; Tao Song; Bo Hu; Lili Wang; Guiqian Tang; Wenkang Gao; Yuhong Guo; Hongyan Miao; Shili Tian; Lu Wang

51

ARCADE - Atmospheric Research for Climate and Astroparticle DEtection  

E-Print Network [OSTI]

The characterization of the optical properties of the atmosphere in the near UV, in particular the tropospheric aerosol stratification, clouds optical depth and spatial distribution are common in the field of atmospheric physics, due to aerosol effect on climate, and also in cosmic rays physics, for a correct reconstruction of energy and longitudinal development of showers. The goal of the ARCADE project is the comparison of the aerosol attenuation measurements obtained with the typical techniques used in cosmic ray experiments (side-scattering measurement, elastic LIDAR and Raman LIDAR) in order to assess the systematic errors affecting each method providing simultaneous observations of the same air mass with different techniques. For this purpose we projected a LIDAR that is now under construction: it will use a 355 nm Nd:YAG laser and will collect the elastic and the N2 Raman back-scattered light. For the side-scattering measurement we will use the Atmospheric Monitoring Telescope, a facility owned by the ...

Buscemi, M; Cilmo, M; Coco, M; Ferrarese, S; Guarino, F; Tonachini, A S; Valore, L; Wiencke, L

2014-01-01T23:59:59.000Z

52

An Update on Radiative Transfer Model Development at Atmospheric and Environmental Research, Inc.  

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

Update on Radiative Transfer Model Development at Update on Radiative Transfer Model Development at Atmospheric and Environmental Research, Inc. J. S. Delamere, S. A. Clough, E. J. Mlawer, Sid-Ahmed Boukabara, K. Cady-Pereira, and M. Shepard Atmospheric and Environmental Research, Inc. Lexington, Maine Introduction Over the last decade, a suite of radiative transfer models has been developed at Atmospheric and Environmental Research, Inc. (AER) with support from the Atmospheric and Radiation Measurement (ARM) Program. These models span the full spectral regime from the microwave to the ultraviolet, and range from monochromatic to band calculations. Each model combines the latest spectroscopic advancements with radiative transfer algorithms to efficiently compute radiances, fluxes, and cooling

53

The global change research center atmospheric chemistry model  

SciTech Connect (OSTI)

This work outlines the development of a new model of the chemistry of the natural atmosphere. The model is 2.5-dimensional, having spatial coordinates height, latitude, and, the half-dimension, land and ocean. The model spans both the troposphere and stratosphere, although the troposphere is emphasized and the stratosphere is simple and incomplete. The chemistry in the model includes the O{sub x}, HO{sub x}, NO{sub x}, and methane cycles in a highly modular fashion which allows model users great flexibility in selecting simulation parameters. A detailed modeled sensitivity analysis is also presented. A key aspect of the model is its inclusion of clouds. The model uses current understanding of the distribution and optical thickness of clouds to determine the true radiation distribution in the atmosphere. As a result, detailed studies of the radiative effects of clouds on the distribution of both oxidant concentrations and trace gas removal are possible. This work presents a beginning of this study with model results and discussion of cloud effects on the hydroxyl radical.

Moraes, F.P. Jr.

1995-01-01T23:59:59.000Z

54

Atmospheric Radiation Measurement Climate Research Facility (ACRF Instrumentation Status: New, Current, and Future)  

SciTech Connect (OSTI)

The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following four sections: (1) new instrumentation in the process of being acquired and deployed, (2) existing instrumentation and progress on improvements or upgrades, (3) proposed future instrumentation, and (4) Small Business Innovation Research instrument development.

JW Voyles

2008-01-30T23:59:59.000Z

55

Atmospheric Radiation Measurement Climate Research Facility - annual report 2004  

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

ER-ARM-0403 ER-ARM-0403 3 Table of Contents Program Overview ............................................................................................................................................................ 4 The Role of Clouds in Climate .................................................................................................................................... 4 ARM Science Goals ..................................................................................................................................................... 4 ARM Climate Research Facility: Successful Science Program Leads to User Facility Designation ................................ 5 Sites Around the World Enable Real Observations .......................................................................................................

56

Pacific Northwest Laboratory annual report for 1985 to the DOE Office of Energy Research. Part 3. Atmospheric sciences  

SciTech Connect (OSTI)

The goals of atmospheric research at Pacific Northwest Laboratory (PNL) are to describe and predict the nature and fate of atmospheric contaminants and to develop an understanding of the atmospheric processes contributing to their distribution on local, regional, and continental scales. In 1985, this research has examined the transport and diffusion of atmospheric contaminants in areas of complex terrain, summarized the field studies and analyses of dry deposition and resuspension conducted in past years, and begun participation in a large, multilaboratory program to assess the precipitation scavenging processes important to the transformation and wet deposition of chemicals composing ''acid rain.'' The description of atmospheric research at PNL is organized in terms of the following study areas: Atmospheric Studies in Complex Terrain; Dispersion, Deposition, and Resuspension of Atmospheric Contaminants; and Processing of Emissions by Clouds and Precipitation (PRECP).

Elderkin, C.E.

1986-02-01T23:59:59.000Z

57

Thermodynamic and economic analysis of polygeneration system integrating atmospheric pressure coal pyrolysis technology with circulating fluidized bed power plant  

Science Journals Connector (OSTI)

Abstract Lignite-based polygeneration system has been considered as a feasible technology to realize clean and efficient utilization of coal resources. A newly polygeneration system has been proposed, featuring the combination of a 2 × 300 MW circulating fluidized bed (CFB) power plant and atmospheric pressure fluidized bed pyrolyzers. Xiaolongtan lignite is pyrolyzed in pyrolyzers. Pyrolyzed volatiles are further utilized for the co-generation of methanol, oil, and electricity, while char residues are fired in CFB boilers to maintain the full load condition of boilers. Detailed system models were built, and the optimum operation parameters of the polygeneration plant were sought. Technical and economic performances of optimum design of the polygeneration plant were analyzed and compared with those of the conventional CFB power plant based on the evaluation of energy and exergy efficiency, internal rate of return (IRR), and payback period. Results revealed that system efficiency and the IRR of the polygeneration plant are ca. 9% and 14% points higher than those of the power plant, respectively. The study also analyzed the effects of market fluctuations on the economic condition of the polygeneration plant, and found that prices of fuel, material, and products have great impacts on the economic characteristics of the polygeneration plant. Polygeneration plant is more economic than CFB power plant even when prices fluctuate within a wide range. This paper provides a thorough evaluation of the polygeneration plant, and the study indicates that the proposed polygeneration plant has a bright prospect.

Zhihang Guo; Qinhui Wang; Mengxiang Fang; Zhongyang Luo; Kefa Cen

2014-01-01T23:59:59.000Z

58

5-Year Research Plan on Fine Particulate Matter in the Atmosphere  

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

Technology Technology Laboratory Five Year Research Plan on Fine Particulate Matter in the Atmosphere FY2001-FY2005 NETL PM Research Program Ambient Sampling & Analysis Control Technology R&D Source Characterization Predictive Modeling -iii- TABLE OF CONTENTS Page I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A. Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 B. Outlook for PM and the Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 II. OVERVIEW OF THE PROGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 A. Program Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 B. Current Program Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1. The Upper Ohio River Valley Project (UORVP) . . . . . . . . . . . . . . . . . . 13

59

Technical Sessions Principal Investigator: S. A. Clough Atmospheric and Environmental Research, Inc.  

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

Principal Investigator: S. A. Clough Principal Investigator: S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, MA 02139 Introduction The availability of a rapid highly accurate multiple scattering radiative transfer model is essential to meet the objectives of the Atmospheric Radiation Measurement (ARM) Program. The model must be capable of computing radiance at spectral intervals consistent with the monochromatic spectral variation of the atmospheric molecular absorption. The resolution of the spectrometers to be deployed at the ARM sites, 0.1 cm-1 and less, will provide an important assessment of our capability to perform radiative transfer calculations in the multiply scattered environment. A second important application forthe high-accuracy high-resolution model is to provide parameterizations and validations for

60

Summary of Breakout Sessions D. A. Randall National Center for Atmospheric Research  

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

Breakout Sessions Breakout Sessions D. A. Randall National Center for Atmospheric Research Boulder CO 80307-3000 J. T. Kiehl Department of Atmospheric Science Colorado State University Ft. Collins, CO 80523 M. Bradley Lawrence Livermore National. Laboratory Livermore, CA 94550 Discussion of Intensive Operation Periods (lOPs) The group made several recommendations for lOPs in general. One of the main points was that members of the Atmospheric Radiation Measurement (ARM) Science Team should be given as much advance notification as possible of planned or potential lOPs. The group also recommended that a lead scientist be appointed for each lOP. This scientist should have expertise in the topic of primary focus of the lOP. The lead scientist's main responsibility would be to make sure that the operations carried out in the lOP

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Pollution and thermodynamics  

Science Journals Connector (OSTI)

Pollution and thermodynamics ... Examines pollution through the lens of thermodynamics. ... Thermodynamics ...

William F. Sheehan

1972-01-01T23:59:59.000Z

62

Thermodynamics and song  

Science Journals Connector (OSTI)

Thermodynamics and song ... Availability of a song on the first and second laws of thermodynamics. ... Thermodynamics ...

Brian D. Kybett

1975-01-01T23:59:59.000Z

63

Pacific Northwest Laboratory annual report for 1984 to the DOE Office of Energy Research. Part 3. Atmospheric sciences  

SciTech Connect (OSTI)

The goals of atmospheric research at Pacific Northwest Laboratory (PNL) are to assess, describe, and predict the nature and fate of atmospheric contaminants and to study the impacts of contaminants on local, regional, and global climates. The contaminants being investigated are those resulting from the development and use of conventional resources (coal, gas, oil, and nuclear power) as well as alternative energy sources. The description of the research is organized into 3 sections: (1) Atmospheric Studies in Complex Terrain (ASCOT); (2) Boundary Layer Meteorology; and (3) Dispersion, Deposition, and Resuspension of Atmospheric Contaminants. Separate analytics have been done for each of the sections and are indexed and contained in the EDB. (MDF)

Elderkin, C.E.

1985-02-01T23:59:59.000Z

64

Contributions to thermodynamics: The inconsistency of thermodynamics  

Science Journals Connector (OSTI)

Contributions to thermodynamics: The inconsistency of thermodynamics ... Presents a flawed thermodynamic argument to test readers' insight and ingenuity. ...

J. McQuirg

1957-01-01T23:59:59.000Z

65

Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR)  

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

Ames: Phil Russell, Jens Redemann, NASA Ames: Phil Russell, Jens Redemann, Ames: Phil Russell, Jens Redemann, NASA Ames: Phil Russell, Jens Redemann, Steve Dunagan, Roy Johnson: Steve Dunagan, Roy Johnson: Battelle PND: Connor Flynn, Beat Schmid, Battelle PND: Connor Flynn, Beat Schmid, Evgueni Kassianov Evgueni Kassianov NASA GSFC: Alexander Sinyuk, Brent NASA GSFC: Alexander Sinyuk, Brent Holben Holben , , & AERONET Team & AERONET Team Collaboration involving: Collaboration involving: NASA Ames, Battelle PND, NASA GSFC NASA Ames, Battelle PND, NASA GSFC 4S 4S TAR TAR : : S S pectrometer for pectrometer for S S ky ky - - S S canning, canning, S S un un - - T T racking racking A A tmospheric tmospheric R R esearch esearch 4STAR: 4STAR: Spectrometer Spectrometer for for Sky Sky - - Scanning Scanning , , Sun Sun - - Tracking Tracking Atmospheric Research Atmospheric Research

66

Basic Thermodynamics  

Science Journals Connector (OSTI)

... THIS is a good introduction to thermodynamics which deals with the three laws, basic kinetic theory (viscosity is not mentioned) ... The last part deals with thermal measurements. Students will obtain a good working knowledge of thermodynamics from this book.

P. T. LANDSBERG

1973-01-19T23:59:59.000Z

67

National Center for Atmospheric Research annual report, fiscal year 1991. Report for 1 October 1990-30 September 1991  

SciTech Connect (OSTI)

The National Center for Atmospheric Research (NCAR) annual report for fiscal year 1991 is presented. NCAR's projects for the period included investigations of air pollution from the oil well fires in Kuwait, a solar eclipse, thunderstorms in central Florida, the El Nino current, greenhouse processes, and upper atmosphere phenomena.

Warner, L.

1992-06-01T23:59:59.000Z

68

Engineering Thermodynamics  

Science Journals Connector (OSTI)

... republication of works by American authors) to give a rigorous treatment of fundamental and applied thermodynamics for the engineering student.

J. H. HORLOCK

1958-04-12T23:59:59.000Z

69

Relativistic thermodynamics  

E-Print Network [OSTI]

Thermodynamics, when formulated as a dynamic action principle, allows a simple and effective integration into the General Theory of Gravitation.

Christian Frřnsdal

2011-06-12T23:59:59.000Z

70

Single-Column Modeling C. J. Walcek Atmospheric Sciences Research Center  

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

C. J. Walcek C. J. Walcek Atmospheric Sciences Research Center State University of New York Albany, New York Introduction intense mid latitude cyclone developed and traversed this domain, allowing one to investigate cloud cover under a wide variety of meteorological environments. Large-scale numerical models of the atmosphere approximate the heterogeneous or subgrid-scale nature of cloudiness by assuming that a fraction of each grid area is occupied by clouds. This cloud cover fraction is used to apportion cloud effects into a "grid-averaged" forcing within areas that contain a mixture of clear and cloudy regions. Most models of tropospheric dynamics assume that the fractional cloud coverage is determined by the grid- averaged relative humidity, stability, or resolvable-scale

71

Four-Dimensional Data Assimilation J.-F. Louis Atmospheric and Environmental Research, Inc.  

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

J.-F. Louis J.-F. Louis Atmospheric and Environmental Research, Inc. Cambridge, MA 02139 The main purpose of the ARM program is to provide the necessary data to develop, test and validate the parameterization of clouds and of their interactions with the radiation field, and the computation of radiative transfer in climate models. For the most part, however, the ARM observations will be imperfect, incomplete, redundant, indirect, and unrepresentative. This is unavoidable, despite the best efforts at equipping the Cloud and Radiation Testbed (CART) site with the best instruments. To understand these limitations, we must consider the structure of a climate model and the observation constraints. The basic prognostic variables of any climate mode! are atmospheric temperature, horizontal wind components

72

Spectrometer for Sky-Scanning Sun-Tracking Atmospheric Research (4STAR): Instrument Technology  

SciTech Connect (OSTI)

The Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR) combines airborne sun tracking and sky scanning with diffraction spectroscopy, to improve knowledge of atmospheric constituents and their links to air-pollution/climate. Direct beam hyper-spectral measurement of optical depth improves retrievals of gas constituents and determination of aerosol properties. Sky scanning enhances retrievals of aerosol type and size distribution. 4STAR measurements will tighten the closure between satellite and ground-based measurements. 4STAR incorporates a modular sun-tracking/ sky-scanning optical head with fiber optic signal transmission to rack mounted spectrometers, permitting miniaturization of the external optical head, and future detector evolution. Technical challenges include compact optical collector design, radiometric dynamic range and stability, and broad spectral coverage. Test results establishing the performance of the instrument against the full range of operational requirements are presented, along with calibration, engineering flight test, and scientific field campaign data and results.

Dunagan, Stephen; Johnson, Roy; Zavaleta, Jhony; Russell, P. B.; Schmid, Beat; Flynn, Connor J.; Redemann, Jens; Shinozuka, Yohei; Livingston, J.; Segal Rozenhaimer, Michal

2013-08-06T23:59:59.000Z

73

A Neo-Rumsfeldian Framework for the Thermodynamics of Organic Particulate  

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

A Neo-Rumsfeldian Framework for the Thermodynamics of Organic Particulate A Neo-Rumsfeldian Framework for the Thermodynamics of Organic Particulate Matter Formation in the Atmosphere: Successes and Challenges Speaker(s): James F. Pankow Date: March 6, 2008 - 12:00pm Location: 90-3122 James F. Pankow. The thermodynamic principles according to which organic particulate matter (OPM) forms in the atmosphere have become well identified because of research progress made since about the mid 1990s. These are, ahem, known knowns. However, many unknowns exist regarding the concentrations and chemical characteristics of the biogenic and anthropogenic compounds present in the atmosphere that are important in OPM formation. In this context, since we know what we need to know more about, these are, well, known unknowns. Other known important unknowns are

74

DOE/SC-ARM-020 Atmospheric Radiation Measurement Climate Research Facility  

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

20 20 Atmospheric Radiation Measurement Climate Research Facility Operations Quarterly Report July 1-September 30, 2013 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 necessarily constitute or imply its endorsement, recommendation, or

75

DOE/SC-ARM-12-021 Atmospheric Radiation Measurement Climate Research Facility  

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

1 1 Atmospheric Radiation Measurement Climate Research Facility Operations Quarterly Report July 1-September 30, 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 necessarily constitute or imply its endorsement, recommendation, or

76

DOE/SC-ARM-13-020 Atmospheric Radiation Measurement Climate Research Facility  

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

0 0 Atmospheric Radiation Measurement Climate Research Facility Operations Quarterly Report July 1-September 30, 2013 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 necessarily constitute or imply its endorsement, recommendation, or

77

Research Highlight  

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

Characterizing Clouds at Arctic Atmospheric Observatories Characterizing Clouds at Arctic Atmospheric Observatories Download a printable PDF Submitter: Shupe, M., University of Colorado Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Life Cycle Journal Reference: Shupe MD, VP Walden, E Eloranta, T Uttal, JR Campbell, SM Starkweather, and M Shiobara. 2011. "Clouds at Arctic atmospheric observatories, part I: occurrence and macrophysical properties." Journal of Applied Meteorology and Climatology, 50(3), 626-644. Shupe MD. 2011. "Clouds at Arctic atmospheric observatories, part II: thermodynamic phase characteristics." Journal of Applied Meteorology and Climatology, 50(3), 645-661. Figure 1: (a) Annual cycles of monthly mean cloud occurrence fraction at six Arctic atmospheric observatories. The average cloud fraction for all

78

Thermodynamics and the bounce  

Science Journals Connector (OSTI)

Thermodynamics and the bounce ... Explaining the bouncing of a rubber ball using the laws of thermodynamics. ... Thermodynamics ...

Charles E. Carraher

1987-01-01T23:59:59.000Z

79

Understanding Thermodynamics  

Science Journals Connector (OSTI)

... The Concepts of Classical Thermodynamics By H. A. Buchdahl. (Cambridge Monographs on Physics.) Pp. xi+223. ... .) 45s.net; $;8.50.

W. K. BURTON

1966-12-03T23:59:59.000Z

80

"Thermodynamics", Temporal Correlations and Scaling Laws  

Science Journals Connector (OSTI)

......research-article Articles Thermodynamics, Temporal Correlations and Scaling Laws Hirokazu Fujisaka * Department...equilibrium statistical-thermodynamics, and the temporal correlation...static and dynamic scaling laws of relevant functions characteristic......

Hirokazu Fujisaka

1989-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Practical Thermodynamics  

Science Journals Connector (OSTI)

... HERE is an excellent introductory textbook on engineering thermodynamics to swell the contents of an already well stocked shelf. Of course, none of ... the author's style, his decision strictly to limit the contents to that part of thermodynamics which is relevant to the treatment of power cycles, refrigeration cycles and heat engines ...

J. C. MATTHEWS

1973-09-21T23:59:59.000Z

82

Chemical Thermodynamics  

Science Journals Connector (OSTI)

... THE authors of these books are enthusiasts about thermodynamics, but with rather different outcomes to their enthusiasm. Prof. Everett shares the view ... the view of P. Duhem (1903) that the range of scientific studies to which thermodynamics is applicable is extremely broad. There are aspects of this universal discipline of interest ...

A. R. UBBELOHDE

1960-04-02T23:59:59.000Z

83

Network Thermodynamics  

Science Journals Connector (OSTI)

... CLASSICAL thermodynamics is limited m that it deals only with the initial and final equilibrium states of ... states of a process, it provides no information about the dynamical behaviour between these states Thermodynamics tells us where we have been and where we are, but not how we ...

GEORGE OSTER; ALAN PERELSON; AHARON KATCHALSKY

1971-12-17T23:59:59.000Z

84

Local Thermodynamics  

Science Journals Connector (OSTI)

... Introduction to the Thermodynamics of Charged and Polarized Layers By A. Sanfeld. (Monographs in Statistical Physics and ... of Charged and Polarized Layers By A. Sanfeld. (Monographs in Statistical Physics and Thermodynamics, Vol. 10.) Pp. xxiv + 258. (Wiley: London and New York ...

ROGER PARSONS

1969-04-05T23:59:59.000Z

85

General Thermodynamics  

Science Journals Connector (OSTI)

... principally in the Journal of the Franklin Institute. These ideas relate to a study of thermodynamics from what the author calls a generalized point of view, which concerns itself with ... from what the author calls a generalized point of view, which concerns itself with the thermodynamics of metastable states and irreversible processes as wall as with the stable states and reversible ...

R. W. HAYWOOD

1956-06-02T23:59:59.000Z

86

Technical Sessions J.-F. Louis Atmospheric and Environment Research, Inc.  

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

-F. Louis -F. Louis Atmospheric and Environment Research, Inc. Cambridge, MA 02139 curve fitting and statistical interpolation.lrl fitting techniques, the fields are represented locally by analytical spline functions whose coefficients are determined by a least square method. Somewhat simpler malthematically, and more often used, statistical interpolation defines the value of the field at each grid point as the weighted average of nearby data. The Cressman and the Barnes techniques are two examples of statistical interpolation, which differ mainly by the shape of the weighting ful1ction. Generally, several passes through thedataare performed with different weighting functions, making successive corrections to the field to get as much information as possible out of the data.

87

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

88

Granular Thermodynamics  

E-Print Network [OSTI]

We present experimental evidence for a strong analogy between quasi-2D uniform non-equilibrium steady states (NESS) of excited granular materials and equilibrium thermodynamics. Under isochoric conditions we find that the ...

Shattuck, M. D.

89

Distinguished Thermodynamics  

Science Journals Connector (OSTI)

... THAT a third edition of Prof. E. A. Guggenheim's "Thermodynamics" has appeared barely eight years after publication of the first edition is proof that ... rate, to more familiar physical quantities.

N. K. ADAM

1957-10-05T23:59:59.000Z

90

Tait's “Thermodynamics  

Science Journals Connector (OSTI)

... Prof. Tait added to the two essays a mathematical sketch of the fundamental principles of thermodynamics, and in this form the book was published in 1868. In the present edition ... at his leisure.

J. CLERK MAXWELL

1878-01-31T23:59:59.000Z

91

A second lecture in thermodynamics  

Science Journals Connector (OSTI)

A second lecture in thermodynamics ... Outlines an introduction for the three laws of thermodynamics ... Thermodynamics ...

Milton Burton

1962-01-01T23:59:59.000Z

92

Research Highlight  

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

Structure of Cirrus Properties and Its Coupling with the State of the Structure of Cirrus Properties and Its Coupling with the State of the Large-Scale Atmosphere Download a printable PDF Submitter: Ivanova, K., Pennsylvania State University Ackerman, T. P., University of Washington Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Properties Journal Reference: Ivanova K and TP Ackerman. 2009. "Tracking nucleation-growth-sublimation in cirrus clouds using ARM millimeter wavelength radar observations." Journal of Geophysical Research - Atmospheres, , D06113, 10.1029/2008JD010271. Figure 1. Values of the drift and diffusion coefficients of the Fokker-Planck equation derived from the MMCR radar reflectivity observations. The diffusion coefficient characterizes the small scale, fast

93

COLLABORATIVE RESEARCH: CONTINUOUS DYNAMIC GRID ADAPTATION IN A GLOBAL ATMOSPHERIC MODEL: APPLICATION AND REFINEMENT  

SciTech Connect (OSTI)

This project had goals of advancing the performance capabilities of the numerical general circulation model EULAG and using it to produce a fully operational atmospheric global climate model (AGCM) that can employ either static or dynamic grid stretching for targeted phenomena. The resulting AGCM combined EULAG's advanced dynamics core with the "physics" of the NCAR Community Atmospheric Model (CAM). Effort discussed below shows how we improved model performance and tested both EULAG and the coupled CAM-EULAG in several ways to demonstrate the grid stretching and ability to simulate very well a wide range of scales, that is, multi-scale capability. We leveraged our effort through interaction with an international EULAG community that has collectively developed new features and applications of EULAG, which we exploited for our own work summarized here. Overall, the work contributed to over 40 peer-reviewed publications and over 70 conference/workshop/seminar presentations, many of them invited. 3a. EULAG Advances EULAG is a non-hydrostatic, parallel computational model for all-scale geophysical flows. EULAG's name derives from its two computational options: EULerian (flux form) or semi-LAGrangian (advective form). The model combines nonoscillatory forward-in-time (NFT) numerical algorithms with a robust elliptic Krylov solver. A signature feature of EULAG is that it is formulated in generalized time-dependent curvilinear coordinates. In particular, this enables grid adaptivity. In total, these features give EULAG novel advantages over many existing dynamical cores. For EULAG itself, numerical advances included refining boundary conditions and filters for optimizing model performance in polar regions. We also added flexibility to the model's underlying formulation, allowing it to work with the pseudo-compressible equation set of Durran in addition to EULAG's standard anelastic formulation. Work in collaboration with others also extended the demonstrated range of validity of soundproof models, showing that they are more broadly applicable than some had previously thought. Substantial testing of EULAG included application and extension of the Jablonowski-Williamson baroclinic wave test - an archetype of planetary weather - and further analysis of multi-scale interactions arising from collapse of temperature fronts in both the baroclinic wave test and simulations of the Held-Suarez idealized climate. These analyses revealed properties of atmospheric gravity waves not seen in previous work and further demonstrated the ability of EULAG to simulate realistic behavior over several orders of magnitude of length scales. Additional collaborative work enhanced capability for modeling atmospheric flows with adaptive moving meshes and demonstrated the ability of EULAG to move into petascale computing. 3b. CAM-EULAG Advances We have developed CAM-EULAG in collaboration with former project postdoc, now University of Cape Town Assistant Professor, Babatunde Abiodun. Initial study documented good model performance in aqua-planet simulations. In particular, we showed that the grid adaptivity (stretching) implemented in CAM-EULAG allows higher resolution in selected regions without causing anomalous behavior such as spurious wave reflection. We then used the stretched-grid version to analyze simulated extreme precipitation events in West Africa, comparing the precipitation and event environment with observed behavior. The model simulates fairly well the spatial scale and the interannual and intraseasonal variability of the extreme events, although its extreme precipitation intensity is weaker than observed. In addition, both observations and the simulations show possible forcing of extreme events by African easterly waves. 3c. Other Contributions Through our collaborations, we have made contributions to a wide range of outcomes. For research focused on terrestrial behavior, these have included (1) upwind schemes for gas dynamics, (2) a nonlinear perspective on the dynamics of the Madden-Julian Oscillation, (3) numerical realism of thermal co

Gutowski, William J.; Prusa, Joseph M.; Smolarkiewicz, Piotr K.

2012-05-08T23:59:59.000Z

94

E-Print Network 3.0 - atmospheric processes research Sample Search...  

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

Roundtable Summary: , Center for Multiscale Modeling of Atmospheric Processes Colorado State University John Dunne, Ph... Exler Director, Office of Communications for...

95

Thermodynamics for undergraduates  

Science Journals Connector (OSTI)

Thermodynamics for undergraduates ... The writer provides some useful addenda to the number of instructive articles that have appeared on thermodynamics. ... Thermodynamics ...

Jurg Waser

1971-01-01T23:59:59.000Z

96

Relativistic Thermodynamics  

Science Journals Connector (OSTI)

It is shown that a generalized formulation of statistical mechanics provides a unified logical basis for the construction of a manifestly covariant theory of relativistic thermodynamics in contrast to heuristic approaches, such as the original theory by Planck and Einstein, and more recent ones by Ott and Mřller. The generalized formalism is applied to discuss the relativistic thermodynamics of blackbody radiation, including such processes as the absorption and reflection of a light beam as well as the adiabatic cooling of cosmic blackbody radiation in Milne's model of the universe. The measurement of the temperature of a light beam is also discussed.

VICTOR H. HAMITY

1969-11-25T23:59:59.000Z

97

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

98

Cryogenic calorimetric contributions to chemical thermodynamics  

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Cryogenic calorimetric contributions to chemical thermodynamics ... It is the purpose of this paper to review current areas of research in cryogenic calorimetry. ...

Edgar F. Westrum Jr.

1962-01-01T23:59:59.000Z

99

Thermodynamics of resource recycling  

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Thermodynamics of resource recycling ... The author applies principles of thermodynamics to analyze the efficiency of resource recycling. ...

W. B. Hauserman

1988-01-01T23:59:59.000Z

100

Thermodynamics of dilute solutions  

Science Journals Connector (OSTI)

Thermodynamics of dilute solutions ... The development of the necessary thermodynamic equations directly in terms of molality is not common ... ...

Gabor Jancso; David V. Fenby

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" from the National Library of EnergyBeta (NLEBeta).
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101

Research Highlight  

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

Tropical Radiosonde Comparisons May Improve Past and Present Humidity Data Tropical Radiosonde Comparisons May Improve Past and Present Humidity Data Submitter: Westwater, E. R., University of Colorado Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Properties Journal Reference: Westwater, E.R., B.B. Stankov, D.Cimini, Y. Han, J.A. Shaw, B.M. Lesht, C.N. Long, 2003, Radiosonde Humidity Soundings and Microwave Radiometers during Nauru99, Journal of Atmospheric and Oceanic Technology, Vol. 21. ARM's Nauru99 campaign provided a rare opportunity to compare original and corrected land-based radiosonde temperature and humidity measurements with those obtained at sea. (ARM photo) Key Contributors: B. B. Stankov, D. Cimini, Y. Han, J. A Shaw, B. M. Lesht, C. N. Long Along the equator in the Central Pacific, DOE's Atmospheric Radiation

102

Research Highlight  

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

Atmospheric Moistening by Clouds Sustains Madden-Julian Oscillation Atmospheric Moistening by Clouds Sustains Madden-Julian Oscillation Download a printable PDF Submitter: Hagos, S. M., Pacific Northwest National Laboratory Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Life Cycle Journal Reference: N/A Outgoing longwave radiation (OLR Wm-2) signals in the tropics averaged between 10°S and 10°N from (a) a regional simulation with moisture constrained by observations and (b) NOAA-CPC satellite observations. The lines mark the eastward MJO propagation speed of 4 m/s. The constrained model is able to reproduce the key OLR features in the observations. Originating over the Indian Ocean, the Madden-Julian Oscillation (MJO) is an equatorial planetary-scale envelope of complex multi-scale cloud systems

103

58 Current projects Atmospheric Composition Research driven by the outcome of data validation. The  

E-Print Network [OSTI]

missions. Paramaribo Station In 1999 KNMI and the Meteorological Service of Surinam (MDS) have started an atmospheric observation programme in Paramaribo, Surinam (South America, 5.8° N, 55.2° W). Initially

Haak, Hein

104

Environmental Research 95 (2004) 247265 Modeling the atmospheric transport and deposition of mercury  

E-Print Network [OSTI]

, atmospheric deposition is now believed to be a more significant loading pathway for these lakes. Mass balance calculations for Lake Michigan (Mason and Sullivan, 1997) and Lake Superior (Dolan et al., 1993) indicate

105

Historical Research in the Atmospheric Sciences: The Value of Literature Reviews, Libraries, and Librarians  

Science Journals Connector (OSTI)

Based on a talk given at the sixth annual meeting of the Atmospheric Science Librarians International, this paper explores the author's experiences performing reviews of the scientific literature as a tool to advancing meteorology and studying ...

David M. Schultz

2004-07-01T23:59:59.000Z

106

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

107

ARM - Publications: Science Team Meeting Documents: AERI Thermodynamic  

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

AERI Thermodynamic Profiling VAP Improvements and Status AERI Thermodynamic Profiling VAP Improvements and Status Feltz, Wayne University of Wisconsin Howell, Ben University of Wisconsin-Madison Turner, David Pacific Northwest National Laboratory Mahon, Rick Pacific Northwest National Laboratory Knuteson, Robert University Of Wisconsin The Atmospheric Emitted Radiance Interferometer (AERI) was one of the primary instruments developed under the DOE ARM instrument development program (IDP) to be deployed to the Climate Research Facility (CRF) Southern Great Plains (SGP) central site near Lamont, Oklahoma. A prototype AERI was deployed in March 1993 where it collected data until the first AERI operational instrument replaced it in July 1999. The ARM archive contains AERI data from the ARM CART SGP central facility site from January

108

CIRRICULUM VITAE: TOM BREIDER Atmospheric Chemistry Post-Doctoral Research Fellow  

E-Print Network [OSTI]

to changing anthropogenic and dynamic biogenic emissions of trace gases and aerosols. These chemistry and trace gas factors affecting the number concentration of atmospheric Aitken (Dp=50 nm) particles. Discuss., 3, 1185-1221, 2010 4) Hossani, R., M. P. Chipperfield, W. Feng, T. J. Breider, E. Atlas, S. A

Jacob, Daniel J.

109

CIRA ANNUAL REPORT FY 2012/2013 COOPERATIVE INSTITUTE FOR RESEARCH IN THE ATMOSPHERE  

E-Print Network [OSTI]

in the Atmosphere (CIRA) at Colorado State University (CSU) is one of a number of cooperative institutes (CIs, data assimilation, and data distribution technology make CIRA a valuable asset to NOAA. As the Director applications in areas as diverse as air quality, solar energy forecasts or quantitative precipitation

Collett Jr., Jeffrey L.

110

CIRA ANNUAL REPORT FY 2013/2014 COOPERATIVE INSTITUTE FOR RESEARCH IN THE ATMOSPHERE  

E-Print Network [OSTI]

in the Atmosphere (CIRA) at Colorado State University (CSU) is one of a number of cooperative institutes (CIs, and data distribution technology make CIRA a valuable asset to NOAA. As the Director of CIRA, I have tried into contemporary applications in areas as diverse as air quality, solar energy forecasts or quantitative

Schumacher, Russ

111

Physical chemistry - Thermodynamics  

Science Journals Connector (OSTI)

Physical chemistry - Thermodynamics ... A style of question that allows the instructor of thermodynamics to cover a wide range of material at varying levels of achievement in a reasonable period of time. ... Thermodynamics ...

Jack Richlin

1982-01-01T23:59:59.000Z

112

QCD Thermodynamics  

E-Print Network [OSTI]

Recent results on QCD thermodynamics are presented. The nature of the T>0 transition is determined, which turns out to be an analytic cross-over. The absolute scale for this transition is calculated. The temperature dependent static potential is given. The results were obtained by using a Symanzik improved gauge and stout-link improved fermionic action. In order to approach the continuum limit four different sets of lattice spacings were used with temporal extensions N_t=4, 6, 8 and 10 (they correspond to lattice spacings a \\sim 0.3, 0.2, 0.15 and 0.12 fm). A new technique is presented, which --in contrast to earlier methods-- enables one to determine the equation of state at very large temperatures.

Z. Fodor

2007-11-02T23:59:59.000Z

113

DOE/SC-ARM-13-007 Atmospheric Radiation Measurement Climate Research...  

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

Radiation Measurement Climate Research Facility Operations Quarterly Report January 1-March 31, 2013 DISCLAIMER This report was prepared as an account of work sponsored by the...

114

Thermodynamic Origin of Life  

E-Print Network [OSTI]

Understanding the thermodynamic function of life may shed light on its origin. Life, as are all irreversible processes, is contingent on entropy production. Entropy production is a measure of the rate of the tendency of Nature to explore available microstates. The most important irreversible process generating entropy in the biosphere, and thus facilitating this exploration, is the absorption and transformation of sunlight into heat. Here we hypothesize that life began, and persists today, as a catalyst for the absorption and dissipation of sunlight at the surface of shallow seas. The resulting heat is then efficiently harvested by other irreversible processes such as the water cycle, hurricanes, and ocean and wind currents. RNA and DNA are the most efficient of all known molecules for absorbing the intense ultraviolet light that could have penetrated the dense early atmosphere, and are remarkably rapid in transforming this light into heat in the presence of liquid water. From this perspective, the origin and evolution of life, inseparable from water and the water cycle, can be understood as resulting from the natural thermodynamic imperative of increasing the entropy production of the Earth in its interaction with its solar environment. A mechanism is proposed for the reproduction of RNA and DNA without the need for enzymes, promoted instead through UV light dissipation and the ambient conditions of prebiotic Earth.

K. Michaelian

2010-09-08T23:59:59.000Z

115

(1) Thermodynamics and Chemistry (2) Thermodynamics  

Science Journals Connector (OSTI)

... Prof. H. C. Weber's book strikes a new note in the literature of thermodynamics. The engineer has long made use of the thermodynamic functions but is probably not ... subject, and although the chemist has very recently become aware of the immense utility of thermodynamics, he has usually very little knowledge of those parts of the subject which do ...

J. R. PARTINGTON

1940-11-16T23:59:59.000Z

116

COLLABORATIVE RESEARCH: CONTINUOUS DYNAMIC GRID ADAPTATION IN A GLOBAL ATMOSPHERIC MODEL: APPLICATION AND REFINEMENT  

SciTech Connect (OSTI)

This project had goals of advancing the performance capabilities of the numerical general circulation model EULAG and using it to produce a fully operational atmospheric global climate model (AGCM) that can employ either static or dynamic grid stretching for targeted phenomena. The resulting AGCM combined EULAG�s advanced dynamics core with the �physics� of the NCAR Community Atmospheric Model (CAM). Effort discussed below shows how we improved model performance and tested both EULAG and the coupled CAM-EULAG in several ways to demonstrate the grid stretching and ability to simulate very well a wide range of scales, that is, multi-scale capability. We leveraged our effort through interaction with an international EULAG community that has collectively developed new features and applications of EULAG, which we exploited for our own work summarized here. Overall, the work contributed to over 40 peer- reviewed publications and over 70 conference/workshop/seminar presentations, many of them invited.

Prusa, Joseph

2012-05-08T23:59:59.000Z

117

Research Highlight  

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

Quantifying the Number of Independent Pieces of Information in Profiles Quantifying the Number of Independent Pieces of Information in Profiles Download a printable PDF Submitter: Crewell, S., University of Cologne Loehnert, U., University of Cologne Turner, D. D., National Oceanic and Atmospheric Administration Ebell, K., University of Cologne Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Radiative Processes Journal Reference: Lohnert U, DD Turner, and S Crewell. 2009. "Ground-based temperature and humidity profiling using spectral infrared and microwave observations. Part I: Simulated retrieval performance in clear-sky conditions." Journal of Applied Meteorology and Climatology, 48(5), 1017-1032. Crewell S, K Ebell, U Loehnert, and DD Turner. 2009. "Can liquid water profiles be retrieved from passive microwave zenith observations?"

118

Research Highlight  

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

Multifractal Analysis of Radiation in Clouds: 5000km to 50cm Multifractal Analysis of Radiation in Clouds: 5000km to 50cm Submitter: Lovejoy, S., McGill University Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Properties Journal Reference: Lovejoy, S., D. Schertzer, J. D. Stanway, 2001: "Direct Evidence of planetary scale atmospheric cascade dynamics," Phys. Rev. Lett. 86(22): 5200-5203. Left: Power spectrum of the 5 different aircraft measured liquid water data sets from the FIRE experiment (averaged over 10 equally logarithmically spaced points on the k-axis and vertically offset). The absolute slopes with Î’ = 1.45 is indicated (straight line on top of graph) for reference. The number of sets used to compute the average from top to bottom: 4, 3, 1, 2, 5. A constant aircraft speed of 100m/s has been assumed. Right: Ensemble

119

Research Highlight  

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

Improved Simulation of Boundary Layer Clouds Improved Simulation of Boundary Layer Clouds Submitter: Ghan, S. J., Pacific Northwest National Laboratory Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Properties Journal Reference: N/A Figure 1. Comparison of Boundary Layer Clouds Schemes in Climate Models with Satellite Observations Key Contributors: James McCaa, as part of his Ph.D. dissertation at University of Washington Chris Bretherton, University of Washington Dennis Hartmann, University of Washington Steven Ghan, Pacific Northwest National Laboratory Marine boundary layer clouds are among the most difficult clouds to represent in climate models. A team of atmospheric scientists from the University of Washington (UW) and the Pacific Northwest National Laboratory

120

Research Highlight  

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

A Comparison of Integrated Water Vapor Sensors: WVIOP-96 A Comparison of Integrated Water Vapor Sensors: WVIOP-96 Submitter: Liljegren, J. C., Argonne National Laboratory Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Properties Journal Reference: N/A Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 The 1996 Water Vapor Intensive Operations Period (WVIOP-96) was conducted at the SGP CART central facility in September in order to assess the skill of a wide variety of sensors in measuring atmospheric water vapor. Here we present a comparison of radiometric brightness temperatures (TB) and vertically-integrated or "precipitable" water vapor (PWV) amounts derived from eight collocated ARM microwave radiometers, as well as microwave radiometers from the NOAA Environmental Technology Laboratory

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Research Highlight  

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

Comparisons Between Radiosondes and Remote Sensors During the 2004 NSA Comparisons Between Radiosondes and Remote Sensors During the 2004 NSA Arctic Winter Radiometric Experiment Submitter: Westwater, E. R., University of Colorado Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Radiative Processes Journal Reference: Mattioli, V, ER Westwater, D Cimini, JS Liljegren, BM Lesht, SI Gutman, and FJ Schmidlin. 2007. "Analysis of radiosonde and ground-based remotely sensed PWV data from the 2004 North Slope of Alaska Arctic Winter Radiometric Experiment." Journal of Atmospheric and Oceanic Technology 243: 415-431. Description of radiosondes launched during the 2004 NSA Arctic Winter Radiometric Experiment. Dual-radiosonde launch of the Vaisala RS90 and Chilled Mirror radiosondes is pictured here.

122

Research Highlights Sorted by Research Area  

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

Research Area Research Area Radiation Processes | Cloud Distributions/Characterizations | Surface Properties | General Circulation and Single Column Models/Parameterizations | Aerosol Properties | Atmospheric Thermodynamics and Vertical Structures | Clouds with Low Optical [Water] Depths (CLOWD) | Vertical Velocity | Broadband Heating Rate Profile (BBHRP) | Cloud-Aerosol-Precipitation Interactions | Cloud Processes | Aerosol Processes Radiation Processes Alexandrov, M. D. Optical Depth Measurements by Shadowband Radiometers and Their Uncertainties ARM Berg, L. Surface Summertime Radiative Forcing by Shallow Cumuli at the ARM SGP ARM Bergmann, D. The Influence of Regional Anthropogenic Emission Reductions on Aerosol Direct Radiative Forcing ASR Bhattacharya, A. Burning on the Prairies ARM

123

SURFRAD—A National Surface Radiation Budget Network for Atmospheric Research  

Science Journals Connector (OSTI)

A surface radiation budget observing network (SURFRAD) has been established for the United States to support satellite retrieval validation, modeling, and climate, hydrology, and weather research. The primary measurements are the downwelling ...

John A. Augustine; John J. DeLuisi; Charles N. Long

2000-10-01T23:59:59.000Z

124

Air Resources Laboratory The Air Resources Laboratory (ARL) is a research laboratory within the National Oceanic and Atmospheric Administration  

E-Print Network [OSTI]

and the atmospheric transport, transformation and fate of air pollutants. To support air quality decision makers, ARL the interaction of air pollutants in the atmosphere and between the atmosphere and the underlying land and water the National Oceanic and Atmospheric Administration (NOAA). ARL is headquartered at the NOAA Center for Weather

125

Thermodynamics and Chemistry (DeVoe, Howard)  

Science Journals Connector (OSTI)

Thermodynamics and Chemistry (DeVoe, Howard) ... Covers all important topics in chemical thermodynamics. ... Thermodynamics ...

Eric A. Gislason

2001-09-01T23:59:59.000Z

126

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

127

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

128

Thermodynamics, folk culture, and poetry  

Science Journals Connector (OSTI)

Thermodynamics, folk culture, and poetry ... The principles of the first, second, and third laws of thermodynamics are illustrated in songs and poems. ... Thermodynamics ...

Wayne L. Smith

1975-01-01T23:59:59.000Z

129

Pacific Northwest Laboratory annual report for 1982 to the DOE Office of Energy Research. Part 3. Atmospheric sciences  

SciTech Connect (OSTI)

This report is organized in terms of generic studies: theoretical studies of atmospheric processes; pollutant characterizations and transformation; boundary layer meteorology; and dispersion, deposition and resuspension of atmospheric pollutants.

Elderkin, C.E.

1983-02-01T23:59:59.000Z

130

THERMODYNAMIC EVALUATION OF PROCESSES FOR HYDROGEN PRODUCTION FROM CARBONACEOUS FUEL.  

E-Print Network [OSTI]

??This research work presents the thermodynamic analysis of hydrogen production using steam methane reforming process at different conditions. The model is developed using HSC 4.1… (more)

Kaini, Bhanu

2010-01-01T23:59:59.000Z

131

The hydroelectric problem of porous rocks: thermodynamic approach and introduction of a percolation threshold  

Science Journals Connector (OSTI)

......research-article Research Notes The hydroelectric problem of porous rocks: thermodynamic...layer. In this note, I take the hydroelectric problem back to its thermodynamic roots by showing how the hydroelectric equations can be derived from the......

André Revil

2002-12-01T23:59:59.000Z

132

The Nature of Thermodynamics  

Science Journals Connector (OSTI)

... position of author and reader in this challenging book are those of two students of thermodynamics who have mastered conventional ... who have mastered conventional thermodynamics, and, having attained some degree of maturity in applying it, agree to confide ...

E. A. MILNE

1942-04-04T23:59:59.000Z

133

Thermodynamics makes Progress  

Science Journals Connector (OSTI)

... new in solid state devices ?", few people would ask "What is new in thermodynamics ?". Yet at the boundaries of ... ?". Yet at the boundaries of thermodynamics, as well as at the foundations, there is considerable scientific activity. Indeed, the ...

P. T. LANDSBERG

1970-03-28T23:59:59.000Z

134

Thermodynamics of Diffusion  

Science Journals Connector (OSTI)

... IN his review of “Thermodynamics” (NATURE, July 25) and again in the Philosophical Magazine for July, Mr. ... I direct attention to the,context in connection with Which this result is stated in "Thermodynamics"(§§ I24"126, 156)?

G. H. BRYAN

1907-10-24T23:59:59.000Z

135

Thermodynamics of Optical Tweezers  

Science Journals Connector (OSTI)

We discuss the measurement of the gradient and scattering forces based on a thermodynamic treatment of optical tweezers.

Stilgoe, Alexander B; Nguyen, Lan T P; Nieminen, Timo A; Rubinsztein-Dunlop, Halina

136

Research Highlight  

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

Effects of Sea Spray on the Thermodynamics of the Hurricane Boundary Layer Download a printable PDF Submitter: Khain, A., The Hebrew University of Jerusalem Area of Research:...

137

SECOND LAW OF THERMODYNAMICS  

E-Print Network [OSTI]

SECOND LAW OF THERMODYNAMICS: STATUS AND CHALLENGES San Diego, California, USA 14 ­ 15 June 2011 The First Law of energy conservation was even known (Joule 1843) and long before Thermodynamic concepts were, including this one. The Laws of Thermodynamics have much wider, including philosophical significance

Kostic, Milivoje M.

138

Computational Reality X Thermodynamics  

E-Print Network [OSTI]

Computational Reality X Thermodynamics B. Emek Abali @ LKM - TU Berlin Abstract After solving energy density. This is actually a branch of thermodynamics, though this question never gets its full answer in a thermodynamics' class. Here we will show one possibility of deriving the energy formulation

Berlin,Technische Universität

139

Thermodynamics and rocket propulsion  

Science Journals Connector (OSTI)

Thermodynamics and rocket propulsion ... This paper outlines the application of the principles of chemical thermodynamics to a comparison of the merit of one rocket propellant (fuel plus oxidizer) with that of another fuel-oxidizer pair for liquid-fueled rocket motors. ... Thermodynamics ...

Frank H. Verhoek

1969-01-01T23:59:59.000Z

140

Thermodynamics and Spontaneity  

Science Journals Connector (OSTI)

Thermodynamics and Spontaneity ... Despite the importance of thermodynamics as the foundation of chemistry, most students emerge from introductory courses with only a dim understanding of this subject. ... This may appeal to students in advanced courses in chemical thermodynamics, but not to most. ...

Raymond S. Ochs

1996-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Thermodynamics and macromolecules  

Science Journals Connector (OSTI)

... slowly away from exact thermodynamic interpretations and so student interest in the fundamental understanding of thermodynamics has waned. It is a pity that some recipe cannot be found which convinces ... pity that some recipe cannot be found which convinces students that the three laws of thermodynamics provide a thread for connecting many phenomena associated with macro-molecular solutions.

S. P. Spragg

1980-12-11T23:59:59.000Z

142

Thermodynamics for Visual Learners  

Science Journals Connector (OSTI)

Thermodynamics for Visual Learners ... I have developed several examples for visual learners in the area of thermodynamics and would like to share these with other professors. ... The examples center around the following topics: the second law of thermodynamics, isothermal processes (ideal gas), ideal gas changes of state, and the relationship between internal energy, temperature, and heat. ...

Todd M. Hamilton

2003-12-01T23:59:59.000Z

143

Treatise on Thermodynamics  

Science Journals Connector (OSTI)

... THE important part played by thermodynamics in modern physics, and especially in chemistry, is a sure guarantee that an English ... , gaseous systems, dissociation, and dilute solutions. As is well known to specialists in thermodynamics, Prof. Planck, instead"of using"the thermodynamic potentials of the majority of writers, ...

G. H. B.

1903-12-31T23:59:59.000Z

144

Partial derivative games in thermodynamics: A cognitive task analysis  

Science Journals Connector (OSTI)

Several studies in recent years have demonstrated that upper-division students struggle with the mathematics of thermodynamics. This paper presents a task analysis based on several expert attempts to solve a challenging mathematics problem in thermodynamics. The purpose of this paper is twofold. First, we highlight the importance of cognitive task analysis for understanding expert performance and show how the epistemic games framework can be used as a tool for this type of analysis, with thermodynamics as an example. Second, through this analysis, we identify several issues related to thermodynamics that are relevant to future research into student understanding and learning of the mathematics of thermodynamics.

Mary Bridget Kustusch; David Roundy; Tevian Dray; Corinne A. Manogue

2014-01-10T23:59:59.000Z

145

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...

146

Thermodynamics in the physical chemistry course  

Science Journals Connector (OSTI)

Thermodynamics in the physical chemistry course ... Provides suggestions for effectively integrating thermodynamics in the physical chemistry course. ... Thermodynamics ...

James L. Dye

1965-01-01T23:59:59.000Z

147

Research Highlight  

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

Simulating the Impact of Aerosols on Tropical Deep Convection Simulating the Impact of Aerosols on Tropical Deep Convection Download a printable PDF Submitter: Morrison, H. C., NCAR Area of Research: Cloud-Aerosol-Precipitation Interactions Working Group(s): Cloud Life Cycle, Cloud-Aerosol-Precipitation Interactions Journal Reference: Morrison H and WW Grabowski. 2011. "Cloud-system resolving model simulations of aerosol indirect effects on tropical deep convection and its thermodynamic environment." Atmospheric Chemistry and Physics, 11(20), doi:10.5194/acp-11-10503-201. Profiles of ensemble- and horizontally averaged a) cloud water mixing ratio, b) rain mixing ratio, c) ice mixing ratio, d) cloud droplet concentration, e) rain number concentration, and f) ice number concentration, Ni, for pristine (blue), polluted (green), and highly

148

Research Highlight  

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

Out with the Old, in with the New: McICA to Replace Traditional Cloud Out with the Old, in with the New: McICA to Replace Traditional Cloud Overlap Assumptions Submitter: Pincus, R., NOAA - CIRES Climate Diagnostics Center Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Modeling Journal Reference: Pincus, R., R. Hemler, and S.A. Klein, 2006: Using Stochastically Generated Subcolumns to Represent Cloud Structure in a Large-Scale Model. Mon. Wea. Rev., 134, 3644-3656. As shown by the difference between the two panels, the standard way (AM2, top panel) of mixing solar reflection and transmission differs systematically from the Independent Column Approximation approach. Because cloud-radiation interactions depend critically on the vertical amount of clouds, different assumptions about how this alignment occurs

149

Research Highlight  

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

Self-Regulation Strikes a Balance Between Hydrological Cycle, Radiation Self-Regulation Strikes a Balance Between Hydrological Cycle, Radiation Processes, and Intraseasonal Dynamic Variations Submitter: Stephens, G. L., Colorado State University Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Properties Journal Reference: Stephens, Graeme L., Webster, Peter J., Johnson, Richard H., Engelen, Richard, L'Ecuyer, Tristan. 2004: Observational Evidence for the Mutual Regulation of the Tropical Hydrological Cycle and Tropical Sea Surface Temperatures. Journal of Climate: Vol. 17, No. 11, pp. 2213-2224. The "humidistat" feedback mechanism suggests that the hydrological cycle and sea surface temperatures mutually regulate each other in phases: the destabilization phase, the convective phase, and the restoring phase. These

150

Research Highlight  

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

Integrated Water Vapor and Cloud Liquid Water at MCTEX Integrated Water Vapor and Cloud Liquid Water at MCTEX Submitter: Liljegren, J. C., Argonne National Laboratory Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Properties Journal Reference: N/A Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Integrated water vapor and cloud liquid water measurements were obtained during the Maritime Continent Thunderstorm Experiment (MCTEX) by Eugene Clothiaux and Tom Ackerman of Penn State University using an ARM microwave radiometer. The radiometer was deployed at Pularumpi, Melville Island (11.55 S, 130.56 E) off the north coast of Australia for November-December 1995. Time series of these results are shown in Figure 1. Time series of integrated or "precipitable" water vapor (PWV) and liquid

151

Research Highlight  

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

Evaluation of Microwave Radiometer Performance in Alaska Evaluation of Microwave Radiometer Performance in Alaska Submitter: Liljegren, J. C., Argonne National Laboratory Area of Research: Atmospheric Thermodynamics and Vertical Structures Working Group(s): Cloud Properties, Radiative Processes Journal Reference: N/A Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 In order to determine the extent to which the ARM microwave radiometers would need to be modified to accommodate Arctic operations, an instrument designed for the Tropical Western Pacific was deployed at the University of Alaska at Fairbanks and continuously operated from 14 December 1995 through 20 June 1996 with the assistance of North Slope Site Scientist Knut Stamnes and Deputy Site Scientist Abdul Alkezweeny. Time series plots of the data are presented in Figure 1.

152

third law of thermodynamics  

Science Journals Connector (OSTI)

third law of thermodynamics [The statement that the entropy of any perfect crystalline substance becomes zero at the absolute zero of temperature] ? dritter thermodynamischer Hauptsatz m, Nernstscher...

2014-08-01T23:59:59.000Z

153

Thermodynamics without tears  

Science Journals Connector (OSTI)

... Thermodynamics and an Introduction to Thermostatistics, 2nd Edn. By Herbert B. Callen. Wiley:1985 ... . Callen. Wiley:1985. Pp.493. 45.15, 34.75.

Tony Guénault

1986-02-27T23:59:59.000Z

154

Thermodynamics and scale relativity  

E-Print Network [OSTI]

It is shown how the fractal paths of scale relativity (following Nottale) can be introduced into a thermodynamical context (following Asadov-Kechkin).

Robert Carroll

2011-10-13T23:59:59.000Z

155

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

156

Thermodynamics and Humanism  

Science Journals Connector (OSTI)

... chapter, his intention appears to have been to write on the wider human aspects of thermodynamics, to contribute to scientific humanism, which he defines as the unification of the specialized ... body of the book is, however, a fairly straightforward explanation of the laws of thermodynamics, partly classical and partly statistical, which will undoubtedly be helpful to students of the ...

J. A. V. BUTLER

1947-07-19T23:59:59.000Z

157

Foundations of Thermodynamics  

Science Journals Connector (OSTI)

... THE first introduction of the fundamentals of thermodynamics to a student is necessarily of a brief and dogmatic nature and often he has ... which is concerned with the task of propagating a firm understanding of the bases of thermodynamics among students with a moderate acquaintance of the structure.

S. ANGUS

1958-06-28T23:59:59.000Z

158

Thermodynamics and Fluids  

Science Journals Connector (OSTI)

... AN important section of the work of modern chemical engineers lies in the application of thermodynamics to problems of fluid systems. This volume, the fourth in the series, is ... properties of physical systems and to the transport properties of fluids. The first section on thermodynamics has been written by Dr. R. Strickland Constable of the Chemical Engineering Department at ...

J. M. COULSON

1958-09-27T23:59:59.000Z

159

Thermodynamics and surface chemistry  

Science Journals Connector (OSTI)

... THE foundations of theoretical thermodynamics laid by Willard Gibbs represent a truly great intellectual and artistic achievement, perhaps marred ... that it seems to require almost as much effort to understand or use or teach thermodynamics as we imagine to have been required for the original creation. George Scatchard devoted ...

Charles Tanford

1977-03-24T23:59:59.000Z

160

Gravitation and Thermodynamics  

Science Journals Connector (OSTI)

... THE suggestion in NATURE of March 1 that thermodynamics might throw light on the question of the temperature variation of gravitation has not been ... unkindly received. The criticisms have not been directed so much against this suggested application of thermodynamics as against the expression deduced for the attraction between two bodies. ...

GEORGE W. TODD

1917-04-05T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Developments in Thermodynamics  

Science Journals Connector (OSTI)

... A SYMPOSIUM on Thermodynamics was held during August 20-25 at Fritzens-Wattens, near Innsbruck, Austria, under ... and the International Union of Pure and Applied Chemistry, the latter through its Commission on Thermodynamics, the Sub-Commission on Experimental Thermochemistry and the Sub-Commission on Experimental ...

H. A. SKINNER; K. SCHÄFER; J. S. ROWLINSON

1959-11-21T23:59:59.000Z

162

Thermodynamics for Engineers  

Science Journals Connector (OSTI)

... it is difficult for the worker in any one branch to follow the applications of thermodynamics to other subjects with the principles of which he is unfamiliar; and he is ... motors, or refrigerating machines, to include one or more chapters on the principles of thermodynamics in relation to the subject discussed. This is a very natural compromise, but involves ...

H. L. C.

1920-09-16T23:59:59.000Z

163

Formal and Practical Thermodynamics  

Science Journals Connector (OSTI)

... MAY I put in a word for the British way of looking at thermodynamics, now largely confined to engineers, as suggested by the critical remarks on the second ... school. I remember when Prof. Planck, in a new edition of his book on thermodynamics, attracted attention by ultimately blessing them: which led to an invasion into Great Britain ...

JOSEPH LARMOR

1936-05-09T23:59:59.000Z

164

Roberts's “Heat and Thermodynamics  

Science Journals Connector (OSTI)

... the last edition of the late Dr. J. K. Roberts's "Heat and Thermodynamics" appeared. The new material incorporated in this, the fourth edition, by Dr. ... ', but simply because new problems have afforded such excellent examples of the application of thermodynamics that their study must surely help the reader to a better understanding of the subject ...

G. R. NOAKES

1952-01-12T23:59:59.000Z

165

Second Law of Thermodynamics  

Science Journals Connector (OSTI)

... SIR,-In a recent article1 Hillel proposes a statement of the Second Law of Thermodynamics which he claims is consistent with the time reversal symmetry of the microscopic laws of ... physical processes (such as K meson decay) which are asymmetric in time independently of thermodynamics. Hillel's remarks are thus a statement about time and not about ...

P. C. W. DAVIES

1974-03-22T23:59:59.000Z

166

Thermodynamics and Chemistry  

Science Journals Connector (OSTI)

... subject, which is more a matter for the drawing office than for the student of thermodynamics. The properties of electrolytes are dealt with from the point of view of activity, ... chapter on the quantum theory and Nernsts heat theorem. The number of books on chemical thermodynamics is not large, and Prof. Macdougalls is a useful member of the group. ...

1927-10-22T23:59:59.000Z

167

Thermodynamics of Biological Synthesis  

Science Journals Connector (OSTI)

... SEVERAL selected topics of thermodynamics are of importance for the interpretation of the results of biochemical experiments. A closer ... ago there were still lively disputes among eminent scientists as to whether the laws of thermodynamics are strictly applicable to biological systems. Some suggested that evolution or man's intellect ...

HERBERT GUTFREUND

1957-08-03T23:59:59.000Z

168

Thermodynamics and statistical mechanics  

Science Journals Connector (OSTI)

... IN this book, Professor Landsberg brings together thermodynamics and statistical mechanics to provide a coherent account of these interrelated branches of physical theory ... side usually result in the essential structures of both becoming obscured. The value of classical thermodynamics lies in what it can do without invoking microscopic models and it is best learnt ...

C.J. Adkins

1979-12-20T23:59:59.000Z

169

Extensions of Thermodynamics  

Science Journals Connector (OSTI)

... THE laws of 'reversible' thermodynamics lead to relationships between the 'equilibrium' properties of substances, for example, specific heats ... fully realized, cannot be deduced rigorously by the 'text-book' method of using reversible thermodynamics (because of the impossibility of finding conditions in which the irreversible effects associated with ...

H. N. V. TEMPERLEY

1952-07-19T23:59:59.000Z

170

Thermodynamics of driven systems  

Science Journals Connector (OSTI)

A geometrical formulation of thermodynamics is carried in this paper to a domain that includes dynamics and driven systems. Let it be known from experience that the behavior of an externally unforced or a driven system is well described in a state space N. The thermodynamics of the system is a geometrical structure in N that arises from an analysis of the time evolution in a more microscopic (i.e., depicting more details) state space M. If in particular the system is externally unforced then the state space N can be chosen to be the state space NET of equilibrium thermodynamics. The geometrical structure in NET, obtained by analyzing the time evolution in a more microscopic state space M, appears to be the geometrical formulation of classical equilibrium thermodynamics. The general formulation of thermodynamics introduced in this paper is illustrated by the example of a k-component system undergoing a chemical reaction.

Miroslav Grmela

1993-08-01T23:59:59.000Z

171

Contributions of the Atmospheric Radiation Measurement (ARM) Program and the ARM Climate Research Facility to the U.S. Climate Change Science Program  

SciTech Connect (OSTI)

The Earth’s surface temperature is determined by the balance between incoming solar radiation and thermal (or infrared) radiation emitted by the Earth back to space. Changes in atmospheric composition, including greenhouse gases, clouds, and aerosols can alter this balance and produce significant climate change. Global climate models (GCMs) are the primary tool for quantifying future climate change; however, there remain significant uncertainties in the GCM treatment of clouds, aerosol, and their effects on the Earth’s energy balance. The 2007 assessment (AR4) by the Intergovernmental Panel on Climate Change (IPCC) reports a substantial range among GCMs in climate sensitivity to greenhouse gas emissions. The largest contributor to this range lies in how different models handle changes in the way clouds absorb or reflect radiative energy in a changing climate (Solomon et al. 2007). In 1989, the U.S. Department of Energy (DOE) Office of Science created the Atmospheric Radiation Measurement (ARM) Program within the Office of Biological and Environmental Research (BER) to address scientific uncertainties related to global climate change, with a specific focus on the crucial role of clouds and their influence on the transfer of radiation in the atmosphere. To address this problem, BER has adopted a unique two-pronged approach: * The ARM Climate Research Facility (ACRF), a scientific user facility for obtaining long-term measurements of radiative fluxes, cloud and aerosol properties, and related atmospheric characteristics in diverse climate regimes. * The ARM Science Program, focused on the analysis of ACRF data to address climate science issues associated with clouds, aerosols, and radiation, and to improve GCMs. This report describes accomplishments of the BER ARM Program toward addressing the primary uncertainties related to climate change prediction as identified by the IPCC.

SA Edgerton; LR Roeder

2008-09-30T23:59:59.000Z

172

Wormholes and thermodynamics  

Science Journals Connector (OSTI)

Hawking has recently pointed out that black holes cannot evaporate and disappear through wormholes because the entropy of a baby universe would not equal its size squared times some proportionality constant. In this report it is shown that multiply connected Euclidean wormhole spacetimes can be associated with nonlinear dynamic laws which are analogous to those of nonequilibrium thermodynamics, making plausible a full generalization of thermodynamics encompassing both nonequilibrium and gravitational effects. It is seen that both at equilibrium and out of it baby universe thermodynamics can provide the right relation between the size of the originating black hole and its entropy.

Pedro F. González-Díaz

1996-07-15T23:59:59.000Z

173

On Thermodynamics and the Nature of the Second Law  

Science Journals Connector (OSTI)

...1977 research-article On Thermodynamics and the Nature of the Second Law A. E. Green P. M. Naghdi...new approach to continuum thermodynamics and are chiefly concerned...mathematical statement of the second law and (c) the nature of restrictions...

1977-01-01T23:59:59.000Z

174

The third law of thermodynamics for Kerr black holes  

Science Journals Connector (OSTI)

......research-article Articles The third law of thermodynamics for Kerr black holes Isao...condition under which the third law of black-hole thermodynamics for Kerr holes is not violated...diverge to infinity as a power law for , and therefore no Kerr......

Isao Okamoto; Osamu Kaburaki

1991-05-15T23:59:59.000Z

175

Quantum Coherence Effects and the Second Law of Thermodynamics  

Science Journals Connector (OSTI)

...research-article Quantum Coherence Effects and the Second Law of Thermodynamics L. H. Ford Negative energy densities and fluxes...fluxes seemingly lead to a breakdown of the second law of thermodynamics. It is argued that such a breakdown will not in...

1978-01-01T23:59:59.000Z

176

Technical Sessions B. E. Manner National Oceanic and Atmospheric Administration  

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

B. E. Manner B. E. Manner National Oceanic and Atmospheric Administration Wave Propagation Laboratory 130ulder, CO 80303 The Atmospheric Radiation Measurement (ARM) pirog ram goals are ambitious, and its schedule is demanding. Many of the instruments, proposed for operations at the first Cloud and Radiation Testbed (CART) site as early alS 1992 represent emerging technology and exist only as :special research prototypes. Therefore, an important preparatory step for ARM was an intensive field project in Colorado in 1991 to assess the suitability of instruments an(j tech- niques for profiling the thermodynamic and kinematic structure of the troposphere and lower stratosphere. The field work was designed to provide ARM with a head start by gathering practical information for the desigln and

177

Thermodynamics in biological systems  

Science Journals Connector (OSTI)

... An EMBO-sponsored Workshop on Thermodynamics in Biological Systems was held at the Villa Durazzo at Santa Margherita Ligure under the ... auspices of the University of Genoa on April 5?9, 1976.

A Correspondent

1976-05-27T23:59:59.000Z

178

Thermodynamics in Physiology  

Science Journals Connector (OSTI)

... These principles can be, and are, accepted. Philosophically speaking, the Second Law of Thermodynamics, dealing with the limitations of the availability of energy, is more liable to doubt ... the jurisdiction of the Second Law.

A. V. HILL

1924-06-14T23:59:59.000Z

179

Advances in Thermodynamics  

Science Journals Connector (OSTI)

... THE first of the laws of thermodynamics dis-A covered was the second, by Carnot in 1824, when he described the ... , caloric for Carnot) and intensity (for example, temperature).

J. R. PARTINGTON

1952-11-01T23:59:59.000Z

180

Tait's “Thermodynamics”1  

Science Journals Connector (OSTI)

... the molecules from the potential energy of their configuration; but they have no place in thermodynamics proper, in which we deal only with sensible masses and their sensible motions.

J. CLERK MAXWELL

1878-02-07T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Thermodynamics of Combustion Processes  

Science Journals Connector (OSTI)

In Chapter 3, the example of a flat one-dimensional flame was used to show that several ingredients are needed for the solution of the conservation equations. One of these ingredients is the thermodynamic prop...

Professor Dr. Jürgen Warnatz; Priv.-Doz. Dr. Ulrich Maas…

1996-01-01T23:59:59.000Z

182

Thermodynamics of Combustion Processes  

Science Journals Connector (OSTI)

In Chapter 3, the example of a flat one-dimensional flame was used to show that several ingredients are needed for the solution of the conservation equations. One of these ingredients is the thermodynamic prop...

Prof. Dr. Dr. h.c. Jürgen Warnatz; Prof. Dr. Ulrich Maas…

2001-01-01T23:59:59.000Z

183

Scientific Final Report: COLLABORATIVE RESEARCH: CONTINUOUS DYNAMIC GRID ADAPTATION IN A GLOBAL ATMOSPHERIC MODEL: APPLICATION AND REFINEMENT  

SciTech Connect (OSTI)

This project had goals of advancing the performance capabilities of the numerical general circulation model EULAG and using it to produce a fully operational atmospheric global climate model (AGCM) that can employ either static or dynamic grid stretching for targeted phenomena. The resulting AGCM combined EULAG's advanced dynamics core with the 'physics' of the NCAR Community Atmospheric Model (CAM). Effort discussed below shows how we improved model performance and tested both EULAG and the coupled CAM-EULAG in several ways to demonstrate the grid stretching and ability to simulate very well a wide range of scales, that is, multi-scale capability. We leveraged our effort through interaction with an international EULAG community that has collectively developed new features and applications of EULAG, which we exploited for our own work summarized here. Overall, the work contributed to over 40 peer-reviewed publications and over 70 conference/workshop/seminar presentations, many of them invited.

William J. Gutowski; Joseph M. Prusa, Piotr K. Smolarkiewicz

2012-04-09T23:59:59.000Z

184

Extensivity and Relativistic Thermodynamics  

E-Print Network [OSTI]

The mathematical properties associated with the widely accepted concept of the extensivity of many of the common thermodynamic variables are examined and some of their consequences considered. The possible conflict between some of these and currently accepted results of special relativistic thermodynamics is highlighted. Although several questions are raised, answers are not advanced as this seems an area demanding calm, widespread reflection which could conceivably lead to radical revision of part, or parts, of theoretical physics.

J. Dunning-Davies

2007-06-27T23:59:59.000Z

185

Reheating and causal thermodynamics  

Science Journals Connector (OSTI)

The reheating process in inflationary universe models is considered as an out-of-equilibrium mixture of two interacting and reacting fluids, and studied within the framework of causal, irreversible thermodynamics. The evolution of the temperature and the decay rate as determined by causal thermodynamics are estimated at different stages of the process. A simple model is also used to find the perturbations of the expansion rate, including the possibility of damped oscillations.

Winfried Zimdahl; Diego Pavón; Roy Maartens

1997-04-15T23:59:59.000Z

186

Pauli problem in thermodynamics  

E-Print Network [OSTI]

A thermodynamic analogue of the Pauli problem (reconstruction of a wavefunction from the position and momentum distributions) is formulated. The coordinates of a quantum system are replaced by the inverse absolute temperature and other intensive quantities, and the Planck constant is replaced by the Boltzmann constant multiplied by two. A new natural mathematical generalization of the quasithermodynamic fluctuation theory is suggested and sufficient conditions for the existence of asymptotic solutions of the thermodynamic Pauli problem are obtained.

Artur E. Ruuge

2012-08-14T23:59:59.000Z

187

Thermodynamics of Fractal Universe  

E-Print Network [OSTI]

We investigate the thermodynamical properties of the apparent horizon in a fractal universe. We find that one can always rewrite the Friedmann equation of the fractal universe in the form of the entropy balance relation $ \\delta Q=T_h d{S_h}$, where $ \\delta Q $ and $ T_{h} $ are the energy flux and Unruh temperature seen by an accelerated observer just inside the apparent horizon. We find that the entropy $S_h$ consists two terms, the first one which obeys the usual area law and the second part which is the entropy production term due to nonequilibrium thermodynamics of fractal universe. This shows that in a fractal universe, a treatment with nonequilibrium thermodynamics of spacetime may be needed. We also study the generalized second law of thermodynamics in the framework of fractal universe. When the temperature of the apparent horizon and the matter fields inside the horizon are equal, i.e. $T=T_h$, the generalized second law of thermodynamics can be fulfilled provided the deceleration and the equation of state parameters ranges either as $-1 \\leq q thermodynamics can be secured in a fractal universe by suitably choosing the fractal parameter $\\beta$.

Ahmad Sheykhi; Zeinab Teimoori; Bin Wang

2012-10-29T23:59:59.000Z

188

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

189

12.003 Physics of Atmospheres and Oceans, Fall 2007  

E-Print Network [OSTI]

The laws of classical mechanics and thermodynamics are used to explore how the properties of fluids on a rotating Earth manifest themselves in, and help shape, the global patterns of atmospheric winds, ocean currents, and ...

Marshall, John C.

190

Matthew Woelfle1, Farren Herron-Thorpe2, and Joe Vaughan2 Washington State University Laboratory for Atmospheric Research  

E-Print Network [OSTI]

the Weather Research Forecasting (WRF), Community Multiscale Air Quality (CMAQ), and Sparse Matrix Operating by the National Science Foundation's REU program under grant number 0754990. This research was also made possible Serena Chung for her assistance with this work. AIRPACT and MODIS AOD had low correlation, 0

Collins, Gary S.

191

Fisher info and thermodynamics' first law  

E-Print Network [OSTI]

theory, that thermodynamics’ ?rst law (TFL) can bewhich is a “Fisher’s thermodynamics” ?rst-law: note that theone can derive thermodynamics ?rst law for the Fisher

Plastino, A; Plastino, A R; Soffer, Bernard H

2006-01-01T23:59:59.000Z

192

Evolution Vs. Thermodynamics  

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

Evolution Vs. Thermodynamics Evolution Vs. Thermodynamics Name: Murphy iii Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: Does the THEORY of evolution contradict the Second Law of thermodynamics? If not, how can an organic system grow in complexity in light of that law? Do not even try to tell me that hot methane soup has less chaos than cool DNA. Replies: The second law only says that the entropy (disorder) of a complete closed system must increase with time, not that the orderliness of one part of that system cannot increase. Increasing complexity of life must be balanced with more increase of disorder somewhere else in the system. Life itself increases order, but only of a small part of the overall system, whose entropy, when all parts are added up, must always be increasing

193

Thermodynamics of Prediction  

Science Journals Connector (OSTI)

A system responding to a stochastic driving signal can be interpreted as computing, by means of its dynamics, an implicit model of the environmental variables. The system’s state retains information about past environmental fluctuations, and a fraction of this information is predictive of future ones. The remaining nonpredictive information reflects model complexity that does not improve predictive power, and thus represents the ineffectiveness of the model. We expose the fundamental equivalence between this model inefficiency and thermodynamic inefficiency, measured by dissipation. Our results hold arbitrarily far from thermodynamic equilibrium and are applicable to a wide range of systems, including biomolecular machines. They highlight a profound connection between the effective use of information and efficient thermodynamic operation: any system constructed to keep memory about its environment and to operate with maximal energetic efficiency has to be predictive.

Susanne Still; David A. Sivak; Anthony J. Bell; Gavin E. Crooks

2012-09-19T23:59:59.000Z

194

Thermodynamic Modeling Studies  

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

Modeling Studies Modeling Studies J. Lindner, L. T. Smith, J. C. Luthe, L. Pearson. R. K. Toghiani, Y. Xia, and P. Naik Institute for Clean Energy Technology Mississippi State University May 20,2009 Initial Tank Composition Remove liquid to reflect undrained saltcake Stage 1 Dissolution Remove transfer stream 1 liquids transfer stream 0 liquids recycle solids liquids transfer stream 1 liquids recycle solids Next Stage of Dissolution DWPF recycle Thermodynamic Modeling Studies 2 Overview of Presentation * Database Activities and Needs * C farm retrievals and neural network development * Thermodynamic data and computational methods for liquid waste flowsheet modeling (SRS) * Aluminum solubility studies Thermodynamic Modeling Studies 3 Database Activities and Needs * Earlier a mid-term study addressed the solubility of a number of systems if

195

Thermodynamics of graphene  

Science Journals Connector (OSTI)

Abstract The 21st century has brought a lot of new results related to graphene. Apparently, graphene has been characterized from all points of view except surface science and, especially, surface thermodynamics. This report aims to close this gap. Since graphene is the first real two-dimensional solid, a general formulation of the thermodynamics of two-dimensional solid bodies is given. The two-dimensional chemical potential tensor coupled with stress tensor is introduced, and fundamental equations are derived for energy, free energy, grand thermodynamic potential (in the classical and hybrid forms), enthalpy, and Gibbs energy. The fundamentals of linear boundary phenomena are formulated with explaining the concept of a dividing line, the mechanical and thermodynamic line tensions, line energy and other linear properties with necessary thermodynamic equations. The one-dimensional analogs of the Gibbs adsorption equation and Shuttleworth–Herring relation are presented. The general thermodynamic relationships are illustrated with calculations based on molecular theory. To make the reader sensible of the harmony of chemical and van der Waals forces in graphene, the remake of the classical graphite theory is presented with additional variable combinations of graphene sheets. The calculation of the line energy of graphene is exhibited including contributions both from chemical bonds and van der Waals forces (expectedly, the latter are considerably smaller than the former). The problem of graphene holes originating from migrating vacancies is discussed on the basis of the Gibbs–Curie principle. An important aspect of line tension is the planar sheet/nanotube transition where line tension acts as a driving force. Using the bending stiffness of graphene, the possible radius range is estimated for achiral (zigzag and armchair) nanotubes.

A.I. Rusanov

2014-01-01T23:59:59.000Z

196

Thermodynamics of quantum lightspheres  

E-Print Network [OSTI]

Lightspheres, surfaces where massless particles are confined in closed orbits, are expected to be common astrophysical structures surrounding ultra-compact objects. In this paper a semi-classical treatment to photons in a lightspheres is proposed. We consider the quantum Maxwell field and derive its energy spectra. A thermodynamic approach for the quantum lightsphere is explored. Within this treatment, an expression for the spectral energy density of the emitted radiation is presented. Our results suggest that lightspheres populated by photons, when thermalized with their environment, have non-usual thermodynamic properties, which could lead to distinct observational signatures.

M. C. Baldiotti; Walace S. Elias; C. Molina; Thiago S. Pereira

2014-10-07T23:59:59.000Z

197

Thermodynamics of quantum lightspheres  

E-Print Network [OSTI]

Lightspheres, surfaces where massless particles are confined in closed orbits, are expected to be common astrophysical structures surrounding ultra-compact objects. In this paper a semi-classical treatment to photons in a lightspheres is proposed. We consider the quantum Maxwell field and derive its energy spectra. A thermodynamic approach for the quantum lightsphere is explored. Within this treatment, an expression for the spectral energy density of the emitted radiation is presented. Our results suggest that lightspheres populated by photons, when thermalized with their environment, have non-usual thermodynamic properties, which could lead to distinct observational signatures.

Baldiotti, M C; Molina, C; Pereira, Thiago S

2014-01-01T23:59:59.000Z

198

Quantum thermodynamic cooling cycle  

E-Print Network [OSTI]

The quantum-mechanical and thermodynamic properties of a 3-level molecular cooling cycle are derived. An inadequacy of earlier models is rectified in accounting for the spontaneous emission and absorption associated with the coupling to the coherent driving field via an environmental reservoir. This additional coupling need not be dissipative, and can provide a thermal driving force - the quantum analog of classical absorption chillers. The dependence of the maximum attainable cooling rate on temperature, at ultra-low temperatures, is determined and shown to respect the recently-established fundamental bound based on the second and third laws of thermodynamics.

Palao, J P; Gordon, J M; Palao, Jose P.; Kosloff, Ronnie; Gordon, Jeffrey M.

2001-01-01T23:59:59.000Z

199

Quantum thermodynamic cooling cycle  

E-Print Network [OSTI]

The quantum-mechanical and thermodynamic properties of a 3-level molecular cooling cycle are derived. An inadequacy of earlier models is rectified in accounting for the spontaneous emission and absorption associated with the coupling to the coherent driving field via an environmental reservoir. This additional coupling need not be dissipative, and can provide a thermal driving force - the quantum analog of classical absorption chillers. The dependence of the maximum attainable cooling rate on temperature, at ultra-low temperatures, is determined and shown to respect the recently-established fundamental bound based on the second and third laws of thermodynamics.

Jose P. Palao; Ronnie Kosloff; Jeffrey M. Gordon

2001-06-08T23:59:59.000Z

200

Thermodynamics, Liposuction, and Metabolism  

Science Journals Connector (OSTI)

The regulation of body weight adheres to the principles of thermodynamics: a positive energy balance causes weight gain, and weight loss occurs when the energy expenditure exceeds intake. More than half the adults in the United States are overweight or obese, and many of these people make an effort... The regulation of body weight adheres to the principles of thermodynamics: a positive energy balance causes weight gain, and weight loss occurs when the energy expenditure exceeds intake. More than half the adults in the United States are overweight or ...

Kelley D.E.

2004-06-17T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Confusion in Thermodynamics  

E-Print Network [OSTI]

For a long time now, confusion has existed in the minds of many over the meaning of various concepts in thermodynamics. Recently, this point has been brought to people's attention by two articles appearing on the well-known archive (arxiv) web site. The content of these two pieces serves to illustrate many of the problems and has occasioned the construction of this answer to at least some of them. The position of the axiom proposed by Carath\\'eodory is central in this matter and here its position is clarified and secured within the framework of thermodynamics. In particular, its relation to the First Law is examined and justified.

Jeremy Dunning-Davies; David Sands

2011-03-02T23:59:59.000Z

202

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

203

Thermodynamics: Keeping Up to Date  

Science Journals Connector (OSTI)

... THERMODYNAMICS still holds surprises, as delegates learnt at the international conference on this topic held ... concepts like information."

A Correspondent

1970-04-18T23:59:59.000Z

204

Thermodynamics and gravitational collapse  

E-Print Network [OSTI]

It is known now that a typical gravitational collapse in general relativity, evolving from regular initial data and under physically reasonable conditions would end in either a black hole or a naked singularity final state. An important question that needs to be answered in this connection is, whether the analogues of the laws of thermodynamics, as formulated for relativistic horizons are respected by the dynamical spacetimes for collapse that end in the formation of a naked singularity. We investigate here the thermodynamical behaviour of the dynamical horizons that form in spherically symmetric gravitational collapse and we show that the first and second laws of black hole thermodynamics, as extended to dynamical spacetimes in a suitable manner, are not violated whether the collapse ends in a black hole or a naked singularity. We then make a distinction between the naked singularities that result from gravitational collapse, and those that exist in solutions of Einstein equations in vacuum axially symmetric and stationary spacetimes, and discuss their connection with thermodynamics in view of the cosmic censorship conjecture and the validity of the third law of black hole mechanics.

Daniele Malafarina; Pankaj S. Joshi

2011-06-19T23:59:59.000Z

205

Kinetic equilibrium and relativistic thermodynamics  

E-Print Network [OSTI]

Relativistic thermodynamics is treated from the point of view of kinetic theory. It is shown that the generalized J\\"uttner distribution suggested in [1] is compatible with kinetic equilibrium. The requirement of compatibility of kinetic and thermodynamic equilibrium reveals several generalizations of the Gibbs relation where the velocity field is an independent thermodynamic variable.

P. Ván

2011-02-01T23:59:59.000Z

206

Atmospheric sciences transfer between research advances and energy-policy assessments (ASTRAEA). Final report, 1 April 1996--31 December 1997  

SciTech Connect (OSTI)

Consistent with the prime goal of the ASTRAEA project, as given in its peer-reviewed proposal, this final report is an informal report to DOE managers about a perceived DOE management problem, specifically, lack of vision in DOE`s Atmospheric Chemistry Program (ACP). After presenting a review of relevant, current literature, the author suggests a framework for conceiving new visions for ACP, namely, multidisciplinary research for energy policy, tackling tough (e.g., nonlinear) problems as a team, ahead of political curves. Two example visions for ACP are then described, called herein the CITIES Project (the Comprehensive Inventory of Trace Inhalants from Energy Sources Project) and the OCEAN Project (the Ocean-Circulation Energy-Aerosol Nonlinearities Project). Finally, the author suggests methods for DOE to provide ACP with needed vision.

Slinn, W.G.N.

1997-12-10T23:59:59.000Z

207

Thermodynamic efficiency and entropy production in the climate system Valerio Lucarini*  

E-Print Network [OSTI]

by showing that only a tiny part of the potential energy of the atmosphere can be converted to mechanical an equivalent Carnot engine with efficiency and frame the Lorenz energy cycle in a macroscale thermodynamic with the landmark analysis of the energy cycle of the atmosphere 1 , which highlighted the concept of availability

Lucarini, Valerio

208

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

209

On Phantom Thermodynamics  

E-Print Network [OSTI]

The thermodynamic properties of dark energy fluids described by an equation of state parameter $\\omega=p/\\rho$ are rediscussed in the context of FRW type geometries. Contrarily to previous claims, it is argued here that the phantom regime $\\omega0$ and $S>0$ in the course of the Universe expansion. Further, the negative value of the chemical potential resulting from the entropy constraint ($S>0$) suggests a bosonic massless nature to the phantom particles.

S. H. Pereira; J. A. S. Lima

2008-10-30T23:59:59.000Z

210

Classical QGP : IV. Thermodynamics  

E-Print Network [OSTI]

We construct the equation of a state of the classical QGP valid for all values of Gamma=V/K, the ratio of the mean Coulomb to kinetic energy. By enforcing the Gibbs relations, we derive the pertinent pressure and entropy densities for all Gamma. For the case of an SU(2) classical gluonic plasma our results compare well with lattice simulations. We show that the strongly coupled component of the classical QGP contributes significantly to the bulk thermodynamics across T_c.

Sungtae Cho; Ismail Zahed

2008-12-09T23:59:59.000Z

211

Gravity, Dimension, Equilibrium, & Thermodynamics  

E-Print Network [OSTI]

Is it actually possible to interpret gravitation as space's property in a pure classical way. Then, we note that extended self-gravitating system equilibrium depends directly on the number of dimension of the space in which it evolves. Given those precisions, we review the principal thermodynamical knowledge in the context of classical gravity with arbitrary dimension of space. Stability analyses for bounded 3D systems, namely the Antonov instability paradigm, are then rapproched to some amazing properties of globular clusters and galaxies.

Jerome Perez

2006-03-30T23:59:59.000Z

212

Thermodynamics of Inhomogeneous Systems  

Science Journals Connector (OSTI)

A self-consistent thermodynamic formalism is developed for the treatment of the equilibrium of systems, some of whose parameters vary continuously from place to place. The method is specially designed for the description of transition interfaces separating two phases. The energy per unit volume is assumed to depend explicitly on the space derivatives of the molecule densities. Equilibrium conditions are obtained for the appropriate internal variables of the system, and all externally measurable intensive variables are uniquely defined by a variational procedure.

Edward W. Hart

1959-01-15T23:59:59.000Z

213

Thermodynamics of irregular scattering  

Science Journals Connector (OSTI)

It is pointed out that scaling (multifractal) properties of chaotic repellers underlying irregular scattering in two-degrees-of-freedom systems can be deduced by measuring simple length scales generated hierarchically along a straight line taken far away from the interaction region, or on the Poincaré plane, and analyzing them in the spirit of the thermodynamic formalism. The method is easier to apply than a periodic orbit analysis.

Zoltán Kovács and Tamás Tél

1990-04-02T23:59:59.000Z

214

Thermodynamics of clan production  

Science Journals Connector (OSTI)

Scenarios for particle production in the GeV and TeV regions are reviewed. The expected increase with the c.m. energy of the average number of clans for the soft component and the decrease for the semihard one indicate possible classical and quantum behavior of gluons, respectively. Clan thermodynamics, discussed in the paper, appears as the natural framework to deal with such phenomena.

Alberto Giovannini; Sergio Lupia; Roberto Ugoccioni

2002-05-10T23:59:59.000Z

215

Thermodynamics of Chaplygin gas  

E-Print Network [OSTI]

We clarify thermodynamics of the Chaplygin gas by introducing the integrability condition. All thermal quantities are derived as functions of either volume or temperature. Importantly, we find a new general equation of state, describing the Chaplygin gas completely. We confirm that the Chaplygin gas could show a unified picture of dark matter and energy which cools down through the universe expansion without any critical point (phase transition).

Yun Soo Myung

2011-05-11T23:59:59.000Z

216

Thermodynamic stability of recoding RNA pseudoknots and ribosomal frameshifting  

E-Print Network [OSTI]

THERMODYNAMIC STABILITY OF RECODING RNA PSEUDOKNOTS AND RIBOSOMAL FRAMESHIFTING A Senior Honors Thesis by BRIAN RAY CANNON Submitted to the Office of Honors Progrmas & Academic Scholarships Texas A&M University in partial fulfillment... for the designation of UNIVERSITY UNDERGRADUATE RESEARCH FELLOW April 2001 Group: Biochemistry THERMODYNAMIC STABILITY OF RECODING RNA PSEUDOKNOTS AND RIBOSOMAL FRAMESHIFTING A Senior Honors Thesis by BRIAN RAY CANNON Submitted to the Office of Honors...

Cannon, Brian Ray

2013-02-22T23:59:59.000Z

217

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...

218

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

219

A Micro-Thermodynamic Formalism  

E-Print Network [OSTI]

We consider the micro-canonical ensemble of a classical Hamiltonian dynamical system, the Hamiltonian being parameter dependent and in the possible presence of other first integrals. We describe a thermodynamic formalism in which a 1st law of thermodynamics, or fundamental relation, is based upon the bulk-entropy, S. Under an ergodic hypothesis, S is shown to be an adiabatic invariant. Expressions for derivatives and thermodynamic relations are derived within the micro-canonical ensemble itself.

Hans Henrik Rugh

2002-01-30T23:59:59.000Z

220

Research Highlight  

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

New Insight on the Atmosphere's Tiniest Particles Download a printable PDF Submitter: Smith, J., NCAR McMurry, P. ., University of Minnesota Area of Research: Aerosol Properties...

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Thermodynamic efficiency of solar concentrators  

Science Journals Connector (OSTI)

The optical thermodynamic efficiency is a comprehensive metric that takes into account all loss mechanisms associated with transferring flux from the source to the target phase space,...

Shatz, Narkis; Bortz, John; Winston, Roland

2010-01-01T23:59:59.000Z

222

The Second Law of Thermodynamics  

Science Journals Connector (OSTI)

... Is it not true that the Second Law of ... of Thermodynamics is contradicted by the known facts of diffusion? When, for instance, masses of ...

M. A. BROWNE

1905-11-30T23:59:59.000Z

223

CHEMISTRY 223: Introductory Physical Chemistry I. Kinetics 1: Gas laws, kinetic theory of collisions. Thermodynamics: Zeroth law of thermodynamics. First law of thermodynamics, heat capacity,  

E-Print Network [OSTI]

of collisions. Thermodynamics: Zeroth law of thermodynamics. First law of thermodynamics, heat capacity, enthalpy, thermochemistry, bond energies. Second law of thermodynamics; the entropy and free energy functions. Third law of thermodynamics, absolute entropies, free energies, Maxwell relations and chemical

Ronis, David M.

224

(1) A Textbook of Thermodynamics (2) Applied Thermodynamics (3) Elementary Thermodynamics  

Science Journals Connector (OSTI)

... (1) DR. HOARE'S book, which deals with pure thermodynamics, is one of the most readable treatises yet published on a subject which is ...

A. L. B.

1939-07-29T23:59:59.000Z

225

Comparing student conceptual understanding of thermodynamics in physics and engineering  

Science Journals Connector (OSTI)

Thermodynamics is a core part of curricula in physics and many engineering fields. Despite the apparent similarity in coverage individual courses in each discipline have distinct emphases and applications. Physics education researchers have identified student difficulties with concepts such as heat temperature and entropy as well as with larger grain-sized ideas such as state variables path-dependent processes etc. Engineering education research has corroborated some of these findings and has identified additional difficulties unique to engineering contexts such as confusion between steady-state and equilibrium processes. We are beginning a project that provides an opportunity to expand the interdisciplinary research on conceptual understanding in thermodynamics. This project has two goals: first determine the overlapping content and concepts across the disciplines; second compare conceptual understanding between these groups using existing conceptual questions from PER and EER. We present a review of PER and EER literature in thermodynamics and highlight some concepts that we will investigate.

Jessica W. Clark; John R. Thompson

2013-01-01T23:59:59.000Z

226

Contact Symmetries and Hamiltonian Thermodynamics  

E-Print Network [OSTI]

In this work we analyze several aspects of the application of contact geometry to thermodynamics. We first investigate the role of gauge transformations and Legendre symmetries in thermodynamics, with respect to both the contact and the metric structures. Then we present a novel mathematical characterization of first order phase transitions as equilibrium processes on the thermodynamic phase space for which the Legendre symmetry is broken. Moreover, using contact Hamiltonian dynamics, we propose a formalism for thermodynamics that resembles the classical Hamiltonian formulation of conservative mechanics. We find out the general functional form for the relevant contact Hamiltonian in thermodynamics and show that it is a measure of the entropy production along thermodynamic processes. Therefore, we use such property to give a precise definition of thermodynamically admissible processes according to the Second Law of thermodynamics. Finally, we also show that we can give an equivalent formulation in terms of the Fisher-Rao metric, in analogy with the Theory of Relativity, where the metric structure defines admissible paths.

A. Bravetti; C. S. Lopez-Monsalvo; F. Nettel

2014-09-25T23:59:59.000Z

227

The Thermodynamics of Heat Engines  

Science Journals Connector (OSTI)

... necessary when an engineer is presenting the usual useful application of the known laws of thermodynamics that he should introduce it in thirty-six pages of this style of writing. ... given to or taken from the stuff than heat and work. The first law of thermodynamics states that, if stuff is carried through a cyclic change and is brought back ...

JOHN PERRY

1903-04-30T23:59:59.000Z

228

The General Theory of Thermodynamics  

Science Journals Connector (OSTI)

... being as given in the title. The following is an abstract of the lecture:-Thermodynamics, Prof. Reynolds said, was a very difficult subject. The reasoning involved was such ... The physical theories of astronomy, light, and sound involved even more mathematical complexities than thermodynamics, but these subjects had been rendered popular, and this to the great improvement of ...

1883-11-29T23:59:59.000Z

229

Thermodynamics of urban population flows  

Science Journals Connector (OSTI)

Orderliness, reflected via mathematical laws, is encountered in different frameworks involving social groups. Here we show that a thermodynamics can be constructed that macroscopically describes urban population flows. Microscopic dynamic equations and simulations with random walkers underlie the macroscopic approach. Our results might be regarded, via suitable analogies, as a step towards building an explicit social thermodynamics.

A. Hernando and A. Plastino

2012-12-05T23:59:59.000Z

230

GEOPHYSICAL RESEARCH LETTERS, VOL. 27, NO. 10, PAGES 1519-1522, MAY 15, 2000 The impact of rising atmospheric CO2 on simulated sea  

E-Print Network [OSTI]

Atlantic sys- tem. The presence of sea ice also impacts the heat budget through its insulation of the ocean atmospheric CO2 on simulated sea ice induced thermohaline circulation variability Marika M. Holland1 , Aaron J atmospheric CO2 lev- els on the sea ice induced low frequency variability of the North Atlantic climate

231

Thermodynamics in Loop Quantum Cosmology  

E-Print Network [OSTI]

Loop quantum cosmology (LQC) is very powerful to deal with the behavior of early universe. And the effective loop quantum cosmology gives a successful description of the universe in the semiclassical region. We consider the apparent horizon of the Friedmann-Robertson-Walker universe as a thermodynamical system and investigate the thermodynamics of LQC in the semiclassical region. The effective density and effective pressure in the modified Friedmann equation from LQC not only determine the evolution of the universe in LQC scenario but are actually also found to be the thermodynamic quantities. This result comes from the energy definition in cosmology (the Misner-Sharp gravitational energy) and is consistent with thermodynamic laws. We prove that within the framework of loop quantum cosmology, the elementary equation of equilibrium thermodynamics is still valid.

Li-Fang Li; Jian-Yang Zhu

2008-12-18T23:59:59.000Z

232

THERMODYNAMICS Unified Model for Nonideal Multicomponent  

E-Print Network [OSTI]

THERMODYNAMICS Unified Model for Nonideal Multicomponent Molecular Diffusion Coefficients Alana and a rigorous descrip- tion of mixture nonideality in the framework of irreversible thermodynamics. Molecular

Firoozabadi, Abbas

233

Thermodynamics of clusterized matter  

E-Print Network [OSTI]

Thermodynamics of clusterized matter is studied in the framework of statistical models with non-interacting cluster degrees of freedom. At variance with the analytical Fisher model, exact Metropolis simulation results indicate that the transition from homogeneous to clusterized matter lies along the $\\rho=\\rho_0$ axis at all temperatures and the limiting point of the phase diagram is not a critical point even if the surface energy vanishes at this point. Sensitivity of the inferred phase diagram to the employed statistical framework in the case of finite systems is discussed by considering the grand-canonical and constant-pressure canonical ensembles. A Wigner-Seitz formalism in which the fragment charge is neutralized by an uniform electron distribution allows to build the phase diagram of neutron star matter.

Ad. R. Raduta; F. Gulminelli

2009-02-28T23:59:59.000Z

234

JournalofGeophysicalResearch: Atmospheres RESEARCH ARTICLE  

E-Print Network [OSTI]

of Earth and Ocean Sciences, University of Victoria, Victoria, British Columbia, Canada, 2Department, Canada, 4Canadian Centre for Climate Modelling and Analysis, Environment Canada, Toronto, Ontario, Canada value is offset by a commensurate reduction in solar irradiance. Compared to the preindustrial climate

Robock, Alan

235

Modern thermodynamics – New concepts based on the second law of thermodynamics  

Science Journals Connector (OSTI)

Thermodynamics is a core part of science. Nearly all scientists should have a basic knowledge of thermodynamics. Thermodynamics is a science of development, and is a viewpoint of scientific development in natural sciences. Achievement of thermodynamics has influence not only on natural sciences, but also on social sciences and philosophy. Fundamental concepts and definitions are very important for any discipline of science, so what is classical thermodynamics and what is modern thermodynamics have become the key points of puzzledom in thermodynamics. In this paper, after clarification of fundamental concept in thermodynamics, a complete basic modern classification of thermodynamics is naturally obtained. It is suggested that extended Carnot theorem and dissipation decrease theorem, together with the laws of thermodynamics, are the most fundamental theorems in thermodynamics discipline. Nondissipative thermodynamics is a new field besides equilibrium thermodynamics belonging to the equal part of the second law of thermodynamics.

Jitao Wang

2009-01-01T23:59:59.000Z

236

Thermodynamics and Thermodynamic geometry of Park black hole  

E-Print Network [OSTI]

We study the thermodynamics and thermodynamic geometry of Park black hole in Ho\\v{r}ava gravity. By incorporating the ideas of differential geometry, we have investigated the thermodynamics using Weinhold geometry and Ruppeiner geometry. We have also analyzed it in the context of newly developed geometrothermodynamics(GTD). Divergence of specific heat is associated with the second order phase transition of black hole. Here in the context of Park black hole, both Weinhold's metric and Ruppeiner's metric well explain this phase transition. But these explanations depend on the choice of potential. Hence the Legendre invariant GTD is used, and with the true singularities in the curvature scalar, GTD well explain the second order phase transition. All these methods together give an exact idea of all the behaviors of the Park black hole thermodynamics.

Jishnu Suresh; Tharanath R; Nijo Varghese; V C Kuriakose

2014-03-19T23:59:59.000Z

237

Actinide Thermodynamics at Elevated Temperatures  

SciTech Connect (OSTI)

The postclosure chemical environment in the proposed Yucca Mountain repository is expected to experience elevated temperatures. Predicting migration of actinides is possible if sufficient, reliable thermodynamic data on hydrolysis and complexation are available for these temperatures. Data are scarce and scattered for 25 degrees C, and nonexistent for elevated temperatures. This collaborative project between LBNL and PNNL collects thermodynamic data at elevated temperatures on actinide complexes with inorganic ligands that may be present in Yucca Mountain. The ligands include hydroxide, fluoride, sulfate, phosphate and carbonate. Thermodynamic parameters of complexation, including stability constants, enthalpy, entropy and heat capacity of complexation, are measured with a variety of techniques including solvent extraction, potentiometry, spectrophotometry and calorimetry

Friese, Judah I.; Rao, Linfeng; Xia, Yuanxian; Bachelor, Paula P.; Tian, Guoxin

2007-11-16T23:59:59.000Z

238

The Second Law of Thermodynamics  

Science Journals Connector (OSTI)

This chapter presents the second law of thermodynamics. This law will conform to your intuition—once you understand its significance and can apply it properly to both closed and open systems.

Dwight C. Look Jr.; Harry J. Sauer Jr.

1988-01-01T23:59:59.000Z

239

The Second Law of Thermodynamics  

Science Journals Connector (OSTI)

... be faced by every student attempting to grasp for himself the significance of the second law of ... of thermodynamics. As I, with difficulty and without much help from the text-books, extricated ...

F. SODDY

1905-12-07T23:59:59.000Z

240

The Third Law of Thermodynamics  

Science Journals Connector (OSTI)

... 1956, the late Sir Francis Simon gives a historical and critical survey of the third law of ... of thermodynamics. In 1906, in a paper entitled "On the Calculation of Chemical Equilibria from ...

S. WEINTROUB

1957-06-29T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

The Second Law of Thermodynamics  

Science Journals Connector (OSTI)

In our qualitative description of processes we have already emphasized the trend of any isolated system towards an unique and stable equilibrium state. The Second Law of Thermodynamics is the quantitative formula...

Henning Struchtrup

2014-01-01T23:59:59.000Z

242

On the Mathematics of Thermodynamics  

E-Print Network [OSTI]

We show that the mathematical structure of Gibbsian thermodynamics flows from the following simple elements: the state space of a thermodynamical substance is a measure space together with two orderings (corresponding to "warmer than" and "adiabatically accessible from") which satisfy certain plausible physical axioms and an area condition which was introduced by Paul Samuelson. We show how the basic identities of thermodynamics, in particular the Maxwell relations, follow and so the existence of energy, free energy, enthalpy and the Gibbs potential function. We also discuss some questions which we have not found dealt with in the literature, such as the amount of information required to reconstruct the equations of state of a substance and a systematic approach to thermodynamical identities.

J. B. Cooper; T. Russell

2011-02-08T23:59:59.000Z

243

Methodological principles of modern thermodynamics  

E-Print Network [OSTI]

The article describes basic principles of the theory which unites thermodynamics of reversible and irreversible processes also extends them methods on processes of transfer and transformation of any forms of energy

V. A. Etkin

2014-01-02T23:59:59.000Z

244

Relativisticlike structure of classical thermodynamics  

E-Print Network [OSTI]

We analyze in the context of geometrothermodynamics a Legendre invariant metric structure in the equilibrium space of an ideal gas. We introduce the concept of thermodynamic geodesic as a succession of points, each corresponding to a state of equilibrium, so that the resulting curve represents a quasi-static process. A rigorous geometric structure is derived in which the thermodynamic geodesics at a given point split the equilibrium space into two disconnected regions separated by adiabatic geodesics. This resembles the causal structure of special relativity, which we use to introduce the concept of adiabatic cone for thermodynamic systems. This result might be interpreted as an alternative indication of the inter-relationship between relativistic physics and classical thermodynamics.

Hernando Quevedo; Alberto Sanchez; Alejandro Vazquez

2008-11-03T23:59:59.000Z

245

Thermodynamics of regular black hole  

E-Print Network [OSTI]

We investigate thermodynamics for a magnetically charged regular black hole (MCRBH), which comes from the action of general relativity and nonlinear electromagnetics, comparing with the Reissner-Norstr\\"om (RN) black hole in both four and two dimensions after dimensional reduction. We find that there is no thermodynamic difference between the regular and RN black holes for a fixed charge $Q$ in both dimensions. This means that the condition for either singularity or regularity at the origin of coordinate does not affect the thermodynamics of black hole. Furthermore, we describe the near-horizon AdS$_2$ thermodynamics of the MCRBH with the connection of the Jackiw-Teitelboim theory. We also identify the near-horizon entropy as the statistical entropy by using the AdS$_2$/CFT$_1$ correspondence.

Yun Soo Myung; Yong-Wan Kim; Young-Jai Park

2007-08-23T23:59:59.000Z

246

Thermodynamic Analysis for Energy Conservation  

E-Print Network [OSTI]

THERMODYNAMIC ANALYSIS FOR ENERGY CONSERVATION William F. Kenney Exxon Chemical Company Florham Park, New Jersey , ,,~ This paper describes a methodology for per forming a thermodynamic analysis of a process, and it demonstrates how... fired. In a cracking furnace it can reduce lost work in combustion and in the convec tion section at the cost of more surface area in the convection section, reduced steam make, and slightly higher radiative temperature differences. Preheating air...

Kenney, W. F.

1981-01-01T23:59:59.000Z

247

http://w3.pppl.gov/~ Thermodynamics,  

E-Print Network [OSTI]

web page: http://w3.pppl.gov/~ zakharov Thermodynamics, science and religion in fusion 1 Leonid E. Zakharov 1 Princeton Plasma Physics Laboratory , MS­27 P .O. Box 451, Princeton NJ 08543­0451 PPPL Research Seminar Jan. 25, 2006, PPPL, Princeton NJ, 2006 1 This work is supported by US DoE contract No. DE--AC020

Zakharov, Leonid E.

248

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

249

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 102, NO. D24, PAGES 29,737-29,745, DECEMBER 26, 1997 Atmospheric aerosol and water vapor characteristics over north  

E-Print Network [OSTI]

Atmospheric aerosol and water vapor characteristics over north central Canada during BOREAS B. L. Markham, J typically0.09 and 0.34 cm, respectively.Size distributionsderivedfrom solar almucantarmeasurementsshowtheHughesSTXCorporation,Greenbelt,Maryland. 2Formerlyat HSTX/GSFC-NASA,Greenbelt,Maryland. Copyright1997by the American

250

Preliminary thermodynamic study for an efficient turbo-blower external combustion Rankine cycle  

Science Journals Connector (OSTI)

This research paper presents a preliminary thermodynamic study of an innovative power plant operating under a Rankine cycle fed by an external combustion system with ... a heat exchanger, to a carbon dioxide Rankine

Manuel Romero Gómez; Javier Romero Gómez; Ramón Ferreiro Garcia…

2014-08-01T23:59:59.000Z

251

A Revolutionary Hybrid Thermodynamic Cycle for Bianary Geothermal...  

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

A Revolutionary Hybrid Thermodynamic Cycle for Bianary Geothermal Power A Revolutionary Hybrid Thermodynamic Cycle for Bianary Geothermal Power A Revolutionary Hybrid Thermodynamic...

252

Thermodynamic properties of materials derived from coal liquefaction  

SciTech Connect (OSTI)

Few measurements of the thermodynamic properties of materials obtained from the liquefaction of coal have been reported. Because several sets of well-defined fractions of coal-derived materials existed that had been separated and characterized by the Characterization Branch of the Division of Processing and Thermodynamics of this Center, the expertise of the Thermodynamics Research Branch was utilized to measure enthalpies of combustion and heat capacities of these materials. The sets of fractions came from five sources: a synthetic crude oil derived from western Kentucky coal by the char-oil-energy development (COED) process, a synthetic crude oil derived from Utah A-seam coal by the COED process, material derived from West Virginia Pittsburgh seam coal by the Synthoil process, material derived from Illinois No. 6 coal by the H-Coal process and materials derived from subbituminous coal by the Conoco Colstrip zinc chloride hydrocracking process.

Smith, N.K.; Lee-Bechtold, S.H.; Good, W.D.

1980-01-01T23:59:59.000Z

253

Local non-equilibrium thermodynamics  

E-Print Network [OSTI]

Local Shannon entropy lies at the heart of modern thermodynamics, with much discussion of trajectory-dependent entropy production. When taken at both boundaries of a process in phase space, it reproduces the second law of thermodynamics over a finite time interval for small scale systems. However, given that entropy is an ensemble property, it has never been clear how one can assign such a quantity locally. Given such a fundamental omission in our knowledge, we construct a new ensemble composed of trajectories reaching an individual microstate, and show that locally defined entropy, information, and free energy are properties of the ensemble, or trajectory-independent true thermodynamic potentials. We find that the Boltzmann-Gibbs distribution and Landauer's principle can be generalized naturally as properties of the ensemble, and that trajectory-free state functions of the ensemble govern the exact mechanism of non-equilibrium relaxation.

Jinwoo, Lee

2015-01-01T23:59:59.000Z

254

Chapter 14 - Nonequilibrium Thermodynamics Approaches  

Science Journals Connector (OSTI)

Abstract Linear nonequilibrium thermodynamics has some fundamental limitations: (1) it does not incorporate mechanisms into its formulation, nor does it provide values for the phenomenological coefficients, and (2) it is based on the local-equilibrium hypothesis, and therefore it is confined to systems in the vicinity of equilibrium. Also, properties not needed or defined in equilibrium may influence the thermodynamic relations in nonequilibrium situations. For example, the density may depend on the shearing rate in addition to temperature and pressure. The local-equilibrium hypothesis holds only for linear phenomenological relations, low frequencies, and long wavelengths, which makes the application of the linear nonequilibrium thermodynamics theory limited for chemical reactions. In the following sections, some of the attempts that have been made to overcome these limitations are summarized.

Ya?ar Demirel

2014-01-01T23:59:59.000Z

255

Information Thermodynamics on Causal Networks  

Science Journals Connector (OSTI)

We study nonequilibrium thermodynamics of complex information flows induced by interactions between multiple fluctuating systems. Characterizing nonequilibrium dynamics by causal networks (i.e., Bayesian networks), we obtain novel generalizations of the second law of thermodynamics and the fluctuation theorem, which include an informational quantity characterized by the topology of the causal network. Our result implies that the entropy production in a single system in the presence of multiple other systems is bounded by the information flow between these systems. We demonstrate our general result by a simple model of biochemical adaptation.

Sosuke Ito and Takahiro Sagawa

2013-10-31T23:59:59.000Z

256

Horizon thermodynamics and composite metrics  

E-Print Network [OSTI]

We examine the conditions under which the thermodynamic behaviour of gravity can be explained within an emergent gravity scenario, where the metric is defined as a composite operator. We show that due to the availability of a boundary of a boundary principle for the quantum effective action, Clausius-like relations can always be constructed. Hence, any true explanation of the thermodynamic nature of the metric tensor has to be referred to an equilibration process, associated to the presence of an H-theorem, possibly driven by decoherence induced by the pregeometric degrees of freedom, and their entanglement with the geometric ones.

Lorenzo Sindoni

2012-11-12T23:59:59.000Z

257

Thermodynamics of Radiative Emission Processes  

Science Journals Connector (OSTI)

A basic assumption implicit in the application of thermodynamics to the electromagnetic field is that the laws of thermodynamics are locally valid for radiative emission and absorption processes. This means that a certain minimum amount of entropy must be created by the radiative process itself. It is shown, by considering the extreme case in which the spontaneous emission of a natural spectral line is the only process taking place, that this assumption is correct, and that its validity is essentially a consequence of the uncertainty principle as expressed by the reciprocal relationship between natural line breadth and lifetime.

M. A. Weinstein

1960-07-15T23:59:59.000Z

258

3 - Thermodynamics and Phase Diagrams  

Science Journals Connector (OSTI)

Abstract Many types of phase diagram sections involving temperature, composition, pressure, chemical potentials, partial pressures, volume and enthalpy as axis variables or constants are described for binary, ternary and multicomponent systems. The theme is the relationship between thermodynamics and phase diagrams. A review of the fundamentals of thermodynamics as required for the interpretation and calculation of phase diagrams is presented. One set of general geometrical rules which governs all types of single-valued phase diagram sections is derived. The computer calculation of phase diagrams from large critically assessed databases of model parameters is discussed.

Arthur D. Pelton

2014-01-01T23:59:59.000Z

259

Thermodynamics of quantum photon spheres  

Science Journals Connector (OSTI)

Photon spheres, surfaces where massless particles are confined in closed orbits, are expected to be common astrophysical structures surrounding ultracompact objects. In this paper a semiclassical treatment of a photon sphere is proposed. We consider the quantum Maxwell field and derive its energy spectra. A thermodynamic approach for the quantum photon sphere is developed and explored. Within this treatment, an expression for the spectral energy density of the emitted radiation is presented. Our results suggest that photon spheres, when thermalized with their environment, have nonusual thermodynamic properties, which could lead to distinct observational signatures.

M.?C. Baldiotti; Walace S. Elias; C. Molina; Thiago S. Pereira

2014-11-19T23:59:59.000Z

260

Thermodynamics of local causal horizons  

Science Journals Connector (OSTI)

We propose an expression for the entropy density associated with the local causal horizons in any diffeomorphism-invariant theory of gravity. If the black-hole entropy of the theory satisfies the physical process version of the first law of thermodynamics, then our proposed entropy satisfies the Clausius relation. Thus, our study shows that the thermodynamic nature of the spacetime horizons is not restricted to the black holes; it also applies to the local causal horizons in the neighborhood of any point in the spacetime.

Arif Mohd and Sudipta Sarkar

2013-07-16T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Nuclear Instruments and Methods in Physics Research A 428 (1999) 593}607 Radio-controlled xenon #ashers for atmospheric monitoring  

E-Print Network [OSTI]

. Denholm , J. Gloyn , D. He , Y. Ho , M.A. Huang , C.C.H. Jui , M.J. Kidd , D.B. Kieda , B. Knapp , S. Ko #ashers for atmospheric monitoring at the HiRes cosmic ray observatory L.R. Wiencke *, T. Abu-Zayyad , M , K. Larson , E.C. Loh , E.J. Mannel , J.N. Matthews , J.R. Meyer , A. Salman , K.M. Simpson , J

262

Should thermodynamics be X-rated?  

Science Journals Connector (OSTI)

Should thermodynamics be X-rated? ... A simple analogy is suggested illustrating the thermodynamic sign convention and the significance of the negative sign of ?H and ?G on spontaneity for general or introductory chemistry students. ...

Henry A. Bent

1985-01-01T23:59:59.000Z

263

The relative roles of the ocean and atmosphere as revealed by buoy air-sea observations in hurricanes  

Science Journals Connector (OSTI)

Results from this multi-hurricane study suggest that the criticality of the oft-cited 26°C hurricane threshold linked to hurricane maintenance may be more closely associated with atmospheric thermodynamic conditions within the inner core than ...

Joseph J. Cione

264

Hawking Emission and Black Hole Thermodynamics  

E-Print Network [OSTI]

A brief review of Hawking radiation and black hole thermodynamics is given, based largely upon hep-th/0409024.

Don N. Page

2006-12-18T23:59:59.000Z

265

Nonequilibrium quantum statistical mechanics and thermodynamics  

E-Print Network [OSTI]

The purpose of this work is to discuss recent progress in deriving the fundamental laws of thermodynamics (0th, 1st and 2nd-law) from nonequilibrium quantum statistical mechanics. Basic thermodynamic notions are clarified and different reversible and irreversible thermodynamic processes are studied from the point of view of quantum statistical mechanics. Special emphasis is put on new adiabatic theorems for steady states close to and far from equilibrium, and on investigating cyclic thermodynamic processes using an extension of Floquet theory.

Walid K. Abou Salem

2006-01-23T23:59:59.000Z

266

Thermodynamics of the Yang-Mills gas  

Science Journals Connector (OSTI)

The contribution of nonlinear fluctuations (instantons) to the thermodynamics of the Yang-Mills gas at high temperature is estimated.

Barry J. Harrington and Harvey K. Shepard

1978-10-15T23:59:59.000Z

267

Thermodynamics in Kaluza-Klein theories  

Science Journals Connector (OSTI)

The topological effects on thermodynamics are investigated for massless particles on a sphere and a product of two spheres.

Y. Tosa

1986-04-15T23:59:59.000Z

268

Second law of thermodynamics for macroscopic mechanics cou pled to thermodynamic degrees of freedom  

E-Print Network [OSTI]

Second law of thermodynamics for macroscopic mechanics cou­ pled to thermodynamic degrees Subject Classification (2000): 82C05, 82C03, 80A10. Keywords: Second law of thermodynamics, Maximum work principle. 1 Introduction The second law of thermodynamics is one of the most important principles

Maes, Christian

269

The Second Law of Thermodynamics  

Science Journals Connector (OSTI)

... CLAUSIUS' supposed deduction of the second law from the ordinary equations of dynamics in the form has been discussed at length by ... form has been discussed at length by Messrs. Larmor and Bryan in their Report on Thermodynamics for the British Association. They accept the deduction on condition that the system be ...

S. H. BURBURY

1893-12-14T23:59:59.000Z

270

Equilibrium Thermodynamics of Lattice QCD  

E-Print Network [OSTI]

Lattice QCD allows us to simulate QCD at non-zero temperature and/or densities. Such equilibrium thermodynamics calculations are relevant to the physics of relativistic heavy-ion collisions. I give a brief review of the field with emphasis on our work.

D. K. Sinclair

2007-01-14T23:59:59.000Z

271

Estimating The Thermodynamics And Kinetics Of Chlorinated Hydrocarbon...  

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

Estimating The Thermodynamics And Kinetics Of Chlorinated Hydrocarbon Degradation. Estimating The Thermodynamics And Kinetics Of Chlorinated Hydrocarbon Degradation. Abstract: Many...

272

Status of the Fundamental Laws of Thermodynamics  

E-Print Network [OSTI]

We describe recent progress towards deriving the Fundamental Laws of thermodynamics (the 0th, 1st and 2nd Law) from nonequilibrium quantum statistical mechanics in simple, yet physically relevant models. Along the way, we clarify some basic thermodynamic notions and discuss various reversible and irreversible thermodynamic processes from the point of view of quantum statistical mechanics.

Walid K. Abou Salem; Juerg Froehlich

2006-04-27T23:59:59.000Z

273

Irreversibility and the second law of thermodynamics  

E-Print Network [OSTI]

Irreversibility and the second law of thermodynamics Jos Uffink July 5, 2001 1 INTRODUCTION The second law of thermodynamics has a curious status. Many modern physicists regard it as an obsolete relic thermodynamics, in which the state does not con- tain velocity-like parameters, one may take R to be the identity

Seevinck, Michiel

274

ADVANCES IN ENVIRONMENTAL REACTION KINETICS AND THERMODYNAMICS  

E-Print Network [OSTI]

1262 ADVANCES IN ENVIRONMENTAL REACTION KINETICS AND THERMODYNAMICS: LONG-TERM FATE thermodynamic and kinetic data is available with regard to the formation of these mixed metal precipitate phases to six months from the initial addition of aqueous nickel. Additionally, we have determined thermodynamic

Sparks, Donald L.

275

Thermodvnamics Thermodynamics of Wax Precipitation in  

E-Print Network [OSTI]

Thermodvnamics Thermodynamics of Wax Precipitation in Petroleum Mixtures C. Lira-Galeana and A, Berkeley, CIA 94720 A thermodynamic pamework is developed for calculating wax precipitation in petroleum only recently have attempts been made to develop a thermodynamic description. Published methods

Firoozabadi, Abbas

276

Chapter 3 - The First Law of Thermodynamics  

Science Journals Connector (OSTI)

This chapter briefly reviews the history of some of the key experiments and ideas that led to the development of the first law of thermodynamics. Then the first law is presented and some of its implications discussed. At this time several new variables are introduced: internal energy (E), which is a state function; work (w) and heat (q), which are path-dependent functions; enthalpy (H), which is a state function; and the constant-pressure and constant-volume heat capacities (CP and CV). Pressure-volume work, indicator diagrams, and the concept of reversibility are described. Then the first law is applied to reversible processes involving ideal gases (e.g., isothermal, isobaric, isochoric, and adiabatic changes of state). The different amounts of work done by reversible and irreversible processes are described. The thermal structure of convective regions of planetary atmospheres is described and the dry (i.e., cloud-free) adiabatic lapse rate is derived. The chapter closes with a discussion of other types of work (e.g., chemical, electrochemical, gravitational, magnetic, and mechanical).

2013-01-01T23:59:59.000Z

277

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)...

278

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

279

Experimental evaluation of gamma fluence-rate predictions from Argon-41 releases to the atmosphere over a nuclear research reactor site  

Science Journals Connector (OSTI)

......radiation experimental dataset has been subsequently...reactor at the Belgium Nuclear Research Center...measurements. The dataset obtained may also...3, 4) used for nuclear emergency preparedness...radiation experimental dataset has been subsequently...RIMPUFF. | Belgian Nuclear Research Center......

Carlos Rojas-Palma; Helle Karina Aage; Poul Astrup; Kim Bargholz; Martin Drews; Hans E. Jřrgensen; Uffe Korsbech; Bent Lauritzen; Torben Mikkelsen; Sřren Thykier-Nielsen; Raf Van Ammel

2004-01-01T23:59:59.000Z

280

The Thermodynamics of Pizza The Thermodynamics of Pizza ES Institute  

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

air spaces, just like the crust (corrugated). 100 units of energy on the wall... Greenhouse Effect....A Bad Andy How do you keep the atmosphere from losing energy? A giant...

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

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

282

Thermodynamical properties of dark energy  

SciTech Connect (OSTI)

We have investigated the thermodynamical properties of dark energy. Assuming that the dark energy temperature T{approx}a{sup -n} and considering that the volume of the Universe enveloped by the apparent horizon relates to the temperature, we have derived the dark energy entropy. For dark energy with constant equation of state w>-1 and the generalized Chaplygin gas, the derived entropy can be positive and satisfy the entropy bound. The total entropy, including those of dark energy, the thermal radiation, and the apparent horizon, satisfies the generalized second law of thermodynamics. However, for the phantom with constant equation of state, the positivity of entropy, the entropy bound, and the generalized second law cannot be satisfied simultaneously.

Gong Yungui; Wang Bin; Wang Anzhong [School of Physical Science and Technology, Southwest University, Chongqing 400715 (China) and CASPER, Department of Physics, Baylor University, Waco, Texas 76798 (United States); Department of Physics, Fudan University, Shanghai 200433 (China); CASPER, Department of Physics, Baylor University, Waco, Texas 76798 (United States)

2007-06-15T23:59:59.000Z

283

Thermodynamics with Continuous Information Flow  

Science Journals Connector (OSTI)

We provide a unified thermodynamic formalism describing information transfers in autonomous as well as nonautonomous systems described by stochastic thermodynamics. We demonstrate how information is continuously generated in an auxiliary system and then transferred to a relevant system that can utilize it to fuel otherwise impossible processes. Indeed, while the joint system satisfies the second law, the entropy balance for the relevant system is modified by an information term related to the mutual information rate between the two systems. We show that many important results previously derived for nonautonomous Maxwell demons can be recovered from our formalism and use a cycle decomposition to analyze the continuous information flow in autonomous systems operating at a steady state. A model system is used to illustrate our findings.

Jordan M. Horowitz and Massimiliano Esposito

2014-07-28T23:59:59.000Z

284

Thermodynamics of a dusty plasma  

Science Journals Connector (OSTI)

In the present work, we develop the thermodynamics of a dusty plasma and give an equation of state for two cases: (a) when the dust forms a stationary background and the charge on the grain does not vary and (b) when the dust charge fluctuates either due to the fluctuations in the electron and ion number densities or due to the dust density variation. Application of the results to the various space plasma situations has been indicated.

B. P. Pandey

2004-02-27T23:59:59.000Z

285

Breaking information-thermodynamics link  

E-Print Network [OSTI]

The information-thermodynamics link is revisited, going back to the analysis of Szilard's engine. It is argued that instead of equivalence rather complementarity of physical entropy and information theoretical one is a correct concept. Famous Landauer's formula for a minimal cost of information processing is replaced by a new one which takes into account accuracy and stability of information encoding. Two recent experiments illustrating the information-energy conversion are critically discussed.

Robert Alicki

2014-06-23T23:59:59.000Z

286

Black Hole Thermodynamics and Electromagnetism  

E-Print Network [OSTI]

We show a strong parallel between the Hawking, Beckenstein black hole Thermodynamics and electromagnetism: When the gravitational coupling constant transform into the electromagnetic coupling constant, the Schwarzchild radius, the Beckenstein temperature, the Beckenstein decay time and the Planck mass transform to respectively the Compton wavelength, the Hagedorn temperature, the Compton time and a typical elementary particle mass. The reasons underlying this parallalism are then discussed in detail.

Burra G. Sidharth

2005-07-15T23:59:59.000Z

287

Thermodynamics of random copolymer melts  

Science Journals Connector (OSTI)

We report on a mean-field thermodynamic analysis of AB random copolymer melts with (backbone) composition correlations that reflect realistic polymerization conditions. Depending on the strength and sign of these correlations, multiple homogeneous phases, periodic mesophases, or disordered mesophases are possible. We identify an isotropic Lifshitz point and the critical lines that emerge from it. Our results should facilitate the design of new copolymeric materials.

Glenn H. Fredrickson and Scott T. Milner

1991-08-12T23:59:59.000Z

288

Thermodynamics of feedback controlled systems  

Science Journals Connector (OSTI)

We compute the entropy reduction in feedback controlled systems due to the repeated operation of the controller. This was the lacking ingredient to establish the thermodynamics of these systems, and in particular of Maxwell’s demons. We illustrate some of the consequences of our general results by deriving the maximum work that can be extracted from isothermal feedback controlled systems. As a case example, we finally study a simple system that performs an isothermal information-fueled particle pumping.

F. J. Cao and M. Feito

2009-04-10T23:59:59.000Z

289

Thermodynamics near the correlation volume  

Science Journals Connector (OSTI)

I present and test three simple thermodynamic fluctuation rules which may in some cases hold for subsystems of infinite systems with volumes less than the correlation volume. Tests at volumes near the correlation volume are made in the two-dimensional square ferromagnetic Ising model by Monte Carlo simulation. Fluctuations into the metastable and spinodal regions are discussed. Aside from difficulties apparently resulting from the small volumes used in the simulations, the rules are found to work well.

George Ruppeiner

1985-04-01T23:59:59.000Z

290

Available energy via nonequilibrium thermodynamics  

Science Journals Connector (OSTI)

Basic macroscopic relations involving the concept of available energy are derived from the local equations of nonequilibrium thermodynamics. The available energy is that part of a system’s energy which can be converted into useful work. The model used describes a mixture of heat conducting compressible inviscid chemically reacting fluids in a gravitational field. Integration of the local equations yields instructive derivations of basic available energy relations for closed systems continuous flow arrangements and for diffusive mixing or separation processes.

E. L. Woollett

1979-01-01T23:59:59.000Z

291

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

292

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.

293

Geometric description of BTZ black holes thermodynamics  

E-Print Network [OSTI]

We study the properties of the space of thermodynamic equilibrium states of the Ba\\~nados-Teitelboim-Zanelli (BTZ) black hole in (2+1)-gravity. We use the formalism of geometrothermodynamics to introduce in the space of equilibrium states a $2-$dimensional thermodynamic metric whose curvature is non-vanishing, indicating the presence of thermodynamic interaction, and free of singularities, indicating the absence of phase transitions. Similar results are obtained for generalizations of the BTZ black hole which include a Chern-Simons term and a dilatonic field. Small logarithmic corrections of the entropy turn out to be represented by small corrections of the thermodynamic curvature, reinforcing the idea that thermodynamic curvature is a measure of thermodynamic interaction.

Hernando Quevedo; Alberto Sanchez

2008-11-15T23:59:59.000Z

294

Definition: Thermodynamic cycle | Open Energy Information  

Open Energy Info (EERE)

Thermodynamic cycle Thermodynamic cycle Jump to: navigation, search Dictionary.png Thermodynamic cycle A process in which a fluid (water, air, ammonia, etc) successively changes state (from a liquid to a gas and back to a liquid) for the purpose of producing or transferring energy.[1] View on Wikipedia Wikipedia Definition A thermodynamic cycle consists of a collection of thermodynamic processes transferring heat and work, while varying pressure, temperature, and other state variables, eventually returning a system to its initial state. In the process of going through this cycle, the system may perform work on its surroundings, therefore acting as a heat engine. State quantities depend only on the thermodynamic state, and cumulative variation of such properties adds up to zero during a cycle. Process quantities (or

295

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

296

CH E 2421 Chemical Engineering Thermodynamics I CH E 3322 Chemical Engineering Thermodynamics II  

E-Print Network [OSTI]

Physics PHYS 4312 Nuclear and Particle Physics Other Engineering Electives #12;CH E 2421 Chemical Engineering Thermodynamics I CH E 3322 Chemical Engineering Thermodynamics II CH E 3330 Engineering Materials Science CH E 4342 Polymer Physics

Zhang, Yuanlin

297

5.60 Thermodynamics & Kinetics, Spring 2007  

E-Print Network [OSTI]

This subject deals primarily with equilibrium properties of macroscopic systems, basic thermodynamics, chemical equilibrium of reactions in gas and solution phase, and rates of chemical reactions.

Bawendi, Moungi Gabriel, 1961-

298

Thermodynamic Advantages of Low Temperature Combustion Engines...  

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

Documents & Publications Improved Engine Design Concepts Using the Second Law of Thermodynamics Boosted HCCI for High Power without Engine Knock, and with Ultra-Low NOX Emissions...

299

Thermodynamics of Lemaitre-Tolman-Bondi Model  

E-Print Network [OSTI]

Here we consider our universe as inhomogeneous spherically symmetric Lemaitre-Tolman-Bondi Model and analyze the thermodynamics of this model of the universe. The trapping horizon is calculated and is found to coincide with the apparent horizon. The Einstein field equations are shown to be equivalent with the unified first law of thermodynamics. Finally assuming the first law of thermodynamics validity of the generalized second law of thermodynamics is examined at the apparent horizon for the perfect fluid and at the event horizon for holographic dark energy.

Subenoy Chakraborty; Nairwita Mazumder; Ritabrata Biswas

2010-06-13T23:59:59.000Z

300

Thermodynamics and the Structure of Matter  

Science Journals Connector (OSTI)

... THERMODYNAMICS and statistical mechanics are commonly treated as separate subjects. They are, however, so ... fundamental theory, and the other eight to various applications.

A. F. DEVONSHIRE

1957-10-12T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Research Highlight  

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

Downward Longwave Irradiance Uncertainty Under Arctic Atmospheres: Downward Longwave Irradiance Uncertainty Under Arctic Atmospheres: Measurements and Modeling Submitter: Marty, C., Swiss Federal Institute of Snow and Avalanche Research Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: Marty, C., R. Philipona, J. Delamere, E.G. Dutton, J. Michalsky, K. Stamnes, R. Storvold, T. Stoffel, S.A. Clough, and E.J. Mlawr, Downward longwave irradiance uncertainty under arctic atmospheres: Measurements and modeling, J. Geophys. Res., 108(D12), 4358, doi:10.1029/2002JD002937, 2003. IPASRC-II instruments deployed at ARM's Barrow Station. Members of 11 international institutions converged at the Atmospheric Radiation Measurement (ARM) Program's North Slope of Alaska (NSA) site in Barrow, Alaska, to conduct the Second International Pyrgeometer and

302

Research Highlight  

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

Field Experiments to Improve the Treatment of Radiation in the Mid-to-Upper Field Experiments to Improve the Treatment of Radiation in the Mid-to-Upper Troposphere Download a printable PDF Submitter: Turner, D. D., National Oceanic and Atmospheric Administration Mlawer, E. J., Atmospheric & Environmental Research, Inc. Area of Research: Radiation Processes Working Group(s): Cloud-Aerosol-Precipitation Interactions Journal Reference: Turner DD and EJ Mlawer. 2010. "The Radiative Heating in Underexplored Bands Campaigns (RHUBC)." Bulletin of the American Meteorological Society, 91, doi:10.1175/2010BAMS2904.1. (a) Atmospheric transmittance at 1 cm-1 resolution in the far-infrared for three atmospheres that are representative of the ARM SGP site, NSA site, and RHUBC-II site in the Chajnantor plateau (CJC). (b) The transmittance

303

Research Highlight  

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

Field Campaign Resource Allocation Using Statistical Decision Analysis Field Campaign Resource Allocation Using Statistical Decision Analysis Download a printable PDF Submitter: Hanlon, C., Pennsylvania State University Area of Research: Cloud Processes Working Group(s): Cloud Life Cycle Journal Reference: Hanlon CJ, JB Stefik, AA Small, J Verlinde, and GS Young. 2013. "Statistical decision analysis for flight decision support: The SPartICus campaign." Journal of Geophysical Research - Atmospheres, , . ACCEPTED. In many atmospheric science field campaigns, investigators are budgeted some number of flight hours to collect data under specific, imperfectly forecastable atmospheric conditions. In such field campaigns, investigators must assess atmospheric conditions each day and make a resource-allocation decision: are conditions good enough to use some of our scarce flight hours

304

Thermodynamic Properties of Supported Catalysts  

SciTech Connect (OSTI)

The goals of this work were to develop Coulometric Titration as a method for characterizing the thermodynamic redox properties of oxides and to apply this technique to the characterization of ceria- and vanadia-based catalysts. The redox properties of ceria and vanadia are a major part of what makes these materials catalytically active but their properties are also dependent on their structure and the presence of other oxides. Quantifying these properties through the measurement of oxidation energetics was the goal of this work.

Gorte, Raymond J.

2014-03-26T23:59:59.000Z

305

Some problems in relativistic thermodynamics  

SciTech Connect (OSTI)

The relativistic equations of state for ideal and real gases, as well as for various interface regions, have been derived. These dependences help to eliminate some controversies in the relativistic thermodynamics based on the special theory of relativity. It is shown, in particular, that the temperature of system whose velocity tends to the velocity of light in vacuum varies in accordance with the Ott law T = T{sub 0}/{radical}1 - v{sup 2}/c{sup 2}. Relativistic dependences for heat and mass transfer, for Ohm's law, and for a viscous flow of a liquid have also been derived.

Veitsman, E. V. [Research and Production Enterprise Tekhnolazer (Russian Federation)], E-mail: ev-veitsman@mail.ru

2007-11-15T23:59:59.000Z

306

Thermodynamics of tubelike flexible polymers  

E-Print Network [OSTI]

In this work we present the general phase behavior of short tubelike flexible polymers. The geometric thickness constraint is implemented through the concept of the global radius of curvature. We use sophisticated Monte Carlo sampling methods to simulate small bead-stick polymer models with Lennard-Jones interaction among non-bonded monomers. We analyze energetic fluctuations and structural quantities to classify conformational pseudophases. We find that the tube thickness influences the thermodynamic behavior of simple tubelike polymers significantly, i.e., for given temperature, the formation of secondary structures strongly depends on the tube thickness.

Thomas Vogel; Thomas Neuhaus; Michael Bachmann; Wolfhard Janke

2009-07-17T23:59:59.000Z

307

Thermodynamics of Lifshitz black holes  

Science Journals Connector (OSTI)

We apply the recently extended conserved Killing charge definition of Abbott-Deser-Tekin formalism to compute, for the first time, the energies of analytic Lifshitz black holes in higher dimensions. We then calculate the temperature and the entropy of this large family of solutions, and study and discuss the first law of black hole thermodynamics. Along the way we also identify the possible critical points of the relevant quadratic curvature gravity theories. Separately, we also apply the generalized Killing charge definition to compute the energy and the angular momentum of the warped AdS3 black hole solution of the three-dimensional new massive gravity theory.

Deniz Olgu Devecio?lu and Özgür Sar?o?lu

2011-06-23T23:59:59.000Z

308

Thermodynamics of tubelike flexible polymers  

Science Journals Connector (OSTI)

In this work, we discuss the general phase behavior of short tubelike flexible polymers. The geometric thickness constraint is implemented through the concept of the global radius of curvature. We use sophisticated Monte Carlo sampling methods to simulate small bead-stick polymer models with Lennard-Jones interaction among nonbonded monomers. We analyze energetic fluctuations and structural quantities to classify conformational pseudophases. We find that the tube thickness influences the thermodynamic behavior of simple tubelike polymers significantly, i.e., for a given temperature, the formation of secondary structures strongly depends on the tube thickness.

Thomas Vogel; Thomas Neuhaus; Michael Bachmann; Wolfhard Janke

2009-07-16T23:59:59.000Z

309

Particle Production and Universal Thermodynamics  

E-Print Network [OSTI]

In the present work, particle creation mechanism will be employed to the universe as a thermodynamical system. The universe is considered to be spatially flat FRW model and cosmic fluid is chosen as perfect fluid with barotropic equation of state: p=(\\gamma -1)\\rho. By proper choice of the particle creation rate, entropy and temperature will be determined at various stages of the evolution of the universe. Finally, using the deceleration parameter as a function of the redshift parameter based on recent observations, particle creation rate will be evaluated and its variation at different epochs will be shown graphically.

Subhajit Saha; Subenoy Chakraborty

2014-01-20T23:59:59.000Z

310

Using ARM TWP Nauru Observations to Evaluate a Simple Thermodynamic Model  

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

Using ARM TWP Nauru Observations to Evaluate a Simple Thermodynamic Model Using ARM TWP Nauru Observations to Evaluate a Simple Thermodynamic Model of the Subcloud Layer Under Fair-Weather Cumulus Conditions Albrecht, Bruce University of Miami Kollias, Pavlos Brookhaven National Laboratory Category: Modeling Marine boundary layer clouds are fundamental in regulating the vertical structure of water vapor and entropy in the lowest 2 km of the Earth's atmosphere. The observations from the ARM TWP-Nauru site provide a unique opportunity to study these clouds and the associated boundary layer structure. In this study an atmospheric mixed layer representation of the subcloud layer for application in fair-weather cumulus regimes is used to develop a diagnostic model of the near surface temperature and moisture associated with a given surface temperature and wind speed. This model

311

Wind energy as a solar?driven heat engine: A thermodynamic approach  

Science Journals Connector (OSTI)

An upper bound on annual average energy in the Earth’s winds is calculated via the formalism of finite?time thermodynamics. The Earth’s atmosphere is viewed as the working fluid of a heat engine where the heat input is solar radiation the heat rejection is to the surrounding universe and the work output is the energy in the Earth’s winds. The upper bound for the annual average power in the Earth’s winds is found to be 17 W/m2 which can be contrasted with the actual estimated annual average wind power of 7 W/m2. Our thermodynamic model also predicts the average extreme temperatures of the Earth’s atmosphere and can be applied to wind systems on other planets.

J. M. Gordon; Y. Zarmi

1989-01-01T23:59:59.000Z

312

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

313

Velocity Distributions from Nonextensive Thermodynamics  

E-Print Network [OSTI]

There is no accepted mechanism that explains the equilibrium structures that form in collisionless cosmological N-body simulations. Recent work has identified nonextensive thermodynamics as an innovative approach to the problem. The distribution function that results from adopting this framework has the same form as for polytropes, but the polytropic index is now related to the degree of nonextensiveness. In particular, the nonextensive approach can mimic the equilibrium structure of dark matter density profiles found in simulations. We extend the investigation of this approach to the velocity structures expected from nonextensive thermodynamics. We find that the nonextensive and simulated N-body rms-velocity distributions do not match one another. The nonextensive rms-velocity profile is either monotonically decreasing or displays little radial variation, each of which disagrees with the rms-velocity distributions seen in simulations. We conclude that the currently discussed nonextensive models require further modifications in order to corroborate dark matter halo simulations. (adapted from TeX)

Eric I. Barnes; Liliya L. R. Williams; Arif Babul; Julianne J. Dalcanton

2006-10-05T23:59:59.000Z

314

Is mixing a thermodynamic process?  

Science Journals Connector (OSTI)

Mixing processes exist with positive entropy change and negative free energy change. However the idea that the i r r e v e r s i b i l i t y of the mixing processes is responsible for the so?called free energy and entropy of mixing is faulty. The mixing as well as the demixing processes may be associated with either reversible or irreversible phenomena depending on the particular conditions. For ideal gases the word ‘‘mixing’’ in the terms ‘‘mixing entropy’’ and ‘‘mixing free energy’’ may sometimes be used d e s c r i p t i v e l y but never c a u s a t i v e l y. The quantity ?? N i R?ln?X i usually referred to as ‘‘mixing entropy ’’ has nothing to do with the mixing phenomenon. Therefore the terms ‘‘mixing entropy’’ and ‘‘mixing free energy’’ are essentially misconceptions. In fact it is shown that the process of mixing of ideal gases has by itself no relevance to any thermodynamic quantity. Therefore in a thermodynamical sense it is a nonprocess. The concepts of assimilation and deassimilation are introduced. It is shown that the ‘‘deassimilation process is essentially irreversible.’’ This should replace the traditional principle that ‘‘the mixing process is essentially irreversible.’’

A. Ben?Naim

1987-01-01T23:59:59.000Z

315

University Corporation for Atmospheric Research Learn: Atmospheric Science Explorers  

E-Print Network [OSTI]

and Development, Washington, DC., pp. 91 - 94. In this activity, students will examine graphs of GHG emissions increasing global temperatures. The enhanced greenhouse effect has been linked to increased GHG emissions (some provided; you may want to look for other or encourage your students to do so) · City map

Mojzsis, Stephen J.

316

ELSEVIER Atmospheric Research 39 (1995) 91-111 ATMOSPHERIC  

E-Print Network [OSTI]

Geesthacht, Institutfiir Physik, Max-Planck-Strafle, D-21502 GeesthachtGermany Received 6 April 1994

Moelders, Nicole

317

Continuum mechanics beyond the second law of thermodynamics  

Science Journals Connector (OSTI)

...mechanics beyond the second law of thermodynamics M. Ostoja-Starzewski 1...thermoviscous fluid|second law of thermodynamics|fluctuation theorem|submartingale...developed subject to the second law of thermodynamics, requiring a non-negative...

2014-01-01T23:59:59.000Z

318

Thermodynamics of Protein Folding Erik Sandelin  

E-Print Network [OSTI]

Thermodynamics of Protein Folding and Design Erik Sandelin Department of Theoretical Physics Lund Sölvegatan 14A 223 62 LUND September 2000 Erik Sandelin Thermodynamics of Protein Folding and Design The protein folding and protein design problems are addressed, using coarse-grained models with only two types

Sandelin, Erik

319

Thermodynamics of the sine-Gordon field  

Science Journals Connector (OSTI)

We comment on a recently published paper of Gupta and Sutherland on the thermodynamics of the sine-Gordon chain. We present a short alternative derivation of the various thermodynamic functions in the high-and low-temperature limits. While our mathematical results essentially agree with theirs, we propose a different physical interpretation.

J. F. Currie; M. B. Fogel; F. L. Palmer

1977-08-01T23:59:59.000Z

320

Thermodynamics in Birmingham : Prof. F. K. Bannister  

Science Journals Connector (OSTI)

... PROF. F. K. BANNISTER has been appointed to a newly created chair of thermodynamics in the Department of Mechanical Engineering in the University of Birmingham. The chair has ... chair has been created in connexion with the organization of the new graduate school in thermodynamics, and Prof. Bannister will be in charge of this school under Prof. G. ...

1952-07-26T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Thermodynamics for Chemists and Chemical Engineers  

Science Journals Connector (OSTI)

... AN understanding of thermodynamics is essential for all who are concerned with quantitative aspects of chemical processes, and ... its concepts too abstract for rapid assimilation. A major difficulty is that the link between thermodynamics and the familiar and easily comprehended molecular theory is statistical mechanics, and most teachers, ...

1956-06-23T23:59:59.000Z

322

Thermodynamics of an accelerated expanding universe  

Science Journals Connector (OSTI)

We investigate the laws of thermodynamics in an accelerating universe driven by dark energy with a time-dependent equation of state. In the case we consider that the physically relevant part of the Universe is that enveloped by the dynamical apparent horizon, we have shown that both the first law and second law of thermodynamics are satisfied. On the other hand, if the boundary of the Universe is considered to be the cosmological event horizon the thermodynamical description based on the definitions of boundary entropy and temperature breaks down. No parameter redefinition can rescue the thermodynamics laws from such a fate, rendering the cosmological event horizon unphysical from the point of view of the laws of thermodynamics.

Bin Wang; Yungui Gong; Elcio Abdalla

2006-10-27T23:59:59.000Z

323

Thermodynamics of an accelerated expanding universe  

SciTech Connect (OSTI)

We investigate the laws of thermodynamics in an accelerating universe driven by dark energy with a time-dependent equation of state. In the case we consider that the physically relevant part of the Universe is that enveloped by the dynamical apparent horizon, we have shown that both the first law and second law of thermodynamics are satisfied. On the other hand, if the boundary of the Universe is considered to be the cosmological event horizon the thermodynamical description based on the definitions of boundary entropy and temperature breaks down. No parameter redefinition can rescue the thermodynamics laws from such a fate, rendering the cosmological event horizon unphysical from the point of view of the laws of thermodynamics.

Wang Bin; Gong Yungui; Abdalla, Elcio [Department of Physics, Fudan University, Shanghai 200433 (China); Institute of Modern Physics and College of Electronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065 (China); Instituto de Fisica, Universidade de Sao Paulo, C.P.66.318, CEP 05315-970, Sao Paulo (Brazil)

2006-10-15T23:59:59.000Z

324

Thermodynamics of an accelerated expanding universe  

E-Print Network [OSTI]

We investigate the laws of thermodynamics in an accelerating universe driven by dark energy with a time-dependent equation of state. In the case we consider that the physically relevant part of the Universe is that envelopped by the dynamical apparent horizon, we have shown that both the first law and second law of thermodynamics are satisfied. On the other hand, if the boundary of the Universe is considered to be the cosmological event horizon the thermodynamical description based on the definitions of boundary entropy and temperature breaks down. No parameter redefinition can rescue the thermodynamics laws from such a fate, rendering the cosmological event horizon unphysical from the point of view of the laws of thermodynamics.

Bin Wang; Yungui Gong; Elcio Abdalla

2005-11-10T23:59:59.000Z

325

Understanding the thermodynamic inefficiencies in combustion processes  

Science Journals Connector (OSTI)

Abstract The thermodynamic inefficiencies associated with any energy conversion process are expressed by the exergy destruction and the exergy losses associated with the process. Combustion processes exhibit very high thermodynamic inefficiencies caused by chemical reaction, heat transfer, friction, and mixing. In this paper, we discuss how to estimate the thermodynamic inefficiencies resulting from each one of these sources. The thermodynamic evaluation can be conducted with the aid of either a conventional exergetic analysis or an advanced one. The latter allows estimation of the potential for improvement of the process being considered and demonstrates the interactions among the components of the system in which combustion takes place. The paper discusses how advanced exergy-based evaluations can be used to reduce the thermodynamic inefficiencies, costs, and environmental impacts associated with energy conversion systems including combustion processes.

George Tsatsaronis; Tatiana Morosuk; Daniela Koch; Max Sorgenfrei

2013-01-01T23:59:59.000Z

326

Research Highlights  

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

Highlights Highlights Form Submit a New Research Highlight Sort Highlights Submitter Title Research Area Working Group Submission Date DOE Progress Reports Notable Research Findings for 2001-2006 Biological and Environmental Research Abstracts Database Research Highlights Summaries Research Highlights Members of ARM's science team are major contributors to radiation and cloud research. ARM investigators publish about 150 refereed journal articles per year, and ARM data are used in many studies published by other scientific organizations. These documented research efforts represent tangible evidence of ARM's contribution to advances in almost all areas of atmospheric radiation and cloud research. Below is a selection of summaries highlighting recently-published ARM research. The entire collection of ARM

327

Thermodynamic Guidelines for the Prediction of Hydrogen Storage...  

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

Thermodynamic Guidelines for the Prediction of Hydrogen Storage Reactions and Their Application to Destabillzed Hydride Mixtures Thermodynamic Guidelines for the Prediction of...

328

Solid-State Hydrogen Storage: Storage Capacity,Thermodynamics...  

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

Hydrogen Storage: Storage Capacity,Thermodynamics and Kinetics. Solid-State Hydrogen Storage: Storage Capacity,Thermodynamics and Kinetics. Abstract: Solid-state reversible...

329

Benzene Dimer: Dynamic Structure and Thermodynamics Derived from...  

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

Benzene Dimer: Dynamic Structure and Thermodynamics Derived from On-the-Fly ab initio DFT-D Molecular Dynamic Simulations. Benzene Dimer: Dynamic Structure and Thermodynamics...

330

Thermodynamics Student Guide (6 Activities) | Department of Energy  

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

Student Guide (6 Activities) Thermodynamics Student Guide (6 Activities) Information about Thermodynamics, six student activities on energy basics for grades 5-8 and 9-12....

331

Structure, Kinetics, and Thermodynamics of the Aqueous Uranyl...  

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

Kinetics, and Thermodynamics of the Aqueous Uranyl(VI) Cation. Structure, Kinetics, and Thermodynamics of the Aqueous Uranyl(VI) Cation. Abstract: Molecular simulation techniques...

332

Comprehensive Thermodynamics of Nickel Hydride Bis(Diphosphine...  

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

Thermodynamics of Nickel Hydride Bis(Diphosphine) Complexes: A Predictive Model through Computations. Comprehensive Thermodynamics of Nickel Hydride Bis(Diphosphine) Complexes: A...

333

Improved Engine Design Concepts Using the Second Law of Thermodynamics...  

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

Design Concepts Using the Second Law of Thermodynamics Improved Engine Design Concepts Using the Second Law of Thermodynamics Presentation from the U.S. DOE Office of Vehicle...

334

Thermodynamic Evaluation of Low-Global Warming Potential Refrigerants...  

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

Thermodynamic Evaluation of Low-Global Warming Potential Refrigerants - 2013 Peer Review Thermodynamic Evaluation of Low-Global Warming Potential Refrigerants - 2013 Peer Review...

335

Simple thermodynamics of jet engines  

Science Journals Connector (OSTI)

We use the first and second laws of thermodynamics to analyze the behavior of an ideal jet engine. Simple analytical expressions for the thermal efficiency the overall efficiency and the reduced thrust are derived. We show that the thermal efficiency depends only on the compression ratio r and on the velocity of the aircraft. The other two performance measures depend also on the ratio of the temperature at the turbine to the inlet temperature in the engine T 3 / T i . An analysis of these expressions shows that it is not possible to choose an optimal set of values of r and T 3 / T i that maximize both the overall efficiency and thrust. We study how irreversibilities in the compressor and the turbine decrease the overall efficiency of jet engines and show that this effect is more pronounced for smaller T 3 / T i .

Pedro Patrício; José M. Tavares

2010-01-01T23:59:59.000Z

336

Thermodynamics of decaying vacuum cosmologies  

Science Journals Connector (OSTI)

The thermodynamic behavior of decaying vacuum cosmologies is investigated within a manifestly covariant formulation. Such a process corresponds to a continuous, irreversible energy flow from the vacuum component to the created matter constituents. It is shown that if the specific entropy per particle remains constant during the process, the equilibrium relations are preserved. In particular, if the vacuum decays into photons, the energy density ? and average number density of photons n scale with the temperature as ??T4 and n?T3. The temperature law is determined and a generalized Planckian-type form of the spectrum, which is preserved in the course of the evolution, is also proposed. Some consequences of these results for decaying vacuum FRW-type cosmologies as well as for models with "adiabatic" photon creation are discussed.

J. A. S. Lima

1996-08-15T23:59:59.000Z

337

Thermodynamics of FeSi  

Science Journals Connector (OSTI)

We show that a simple model involving two narrow (?500 K) peaks in the density of states (DOS) at the edges of a narrow (?1000 K) gap can account for the observed anomalies in the magnetic susceptibility, specific heat, thermal expansion, and elastic response of FeSi. We also show that the resistivity of FeSi, including the metal-insulator ‘‘transition’’ at about 300 K, is well described by this model. Recent band-structure calculations, although predicting the correct value for the semiconducting gap, are unable to account for the narrow peaks in the DOS needed to explain the thermodynamics. We conclude that, given the available alternatives, a Kondo insulator description—involving an extreme renormalization of the noninteracting bands—is most appropriate for FeSi.

D. Mandrus; J. L. Sarrao; A. Migliori; J. D. Thompson; Z. Fisk

1995-02-15T23:59:59.000Z

338

Thermodynamics and Transport Phenomena in High Temperature Steam Electrolysis Cells  

SciTech Connect (OSTI)

Hydrogen can be produced from water splitting with relatively high efficiency using high temperature electrolysis. This technology makes use of solid-oxide cells, running in the electrolysis mode to produce hydrogen from steam, while consuming electricity and high temperature process heat. The overall thermal-to-hydrogen efficiency for high temperature electrolysis can be as high as 50%, which is about double the overall efficiency of conventional low-temperature electrolysis. Current large-scale hydrogen production is based almost exclusively on steam reforming of methane, a method that consumes a precious fossil fuel while emitting carbon dioxide to the atmosphere. An overview of high temperature electrolysis technology will be presented, including basic thermodynamics, experimental methods, heat and mass transfer phenomena, and computational fluid dynamics modeling.

James E. O'Brien

2012-03-01T23:59:59.000Z

339

Calculating the vapor pressure of water from the second law of thermodynamics  

Science Journals Connector (OSTI)

Calculating the vapor pressure of water from the second law of thermodynamics ... Thermodynamics ...

M. H. Everdell

1969-01-01T23:59:59.000Z

340

Research Highlight  

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

Lord of the Wings: Elevated Particles a Rising Star Lord of the Wings: Elevated Particles a Rising Star Download a printable PDF Submitter: Kassianov, E., Pacific Northwest National Laboratory Area of Research: Radiation Processes Working Group(s): Aerosol Life Cycle Journal Reference: Kassianov E, C Flynn, J Redemann, B Schmid, PB Russell, and A Sinyuk. 2012. "Initial assessment of the Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR)-based aerosol retrieval: Sensitivity study." Atmosphere, 3, doi:10.3390/atmos3040495. The 4STAR instrument. The 4STAR instrument (inset) is installed through the upper hull of the PNNL G-1 research aircraft, for in-flight sun-tracking and sky light-scanning. Researchers at Pacific Northwest National Laboratory, in collaboration with colleagues at NASA Ames Research Center, developed a next-generation

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

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

342

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

343

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

344

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

345

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

346

Research Highlight  

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

Spectrally Invariant Approximation Within Atmospheric Radiative Transfer Spectrally Invariant Approximation Within Atmospheric Radiative Transfer Download a printable PDF Submitter: Marshak, A., NASA - Goddard Space Flight Center Area of Research: Radiation Processes Working Group(s): Cloud-Aerosol-Precipitation Interactions Journal Reference: Marshak A, Y Knyazikhin, JC Chiu, and WJ Wiscombe. 2011. "Spectrally-invariant approximation within atmospheric radiative transfer." Journal of the Atmospheric Sciences, 68(12), doi:10.1175/JAS-D-11-060.1. Ratio of reflectance Rλ plus transmittance Tλ over single scattering albedo ω0λ plotted against the sum Rλ+Tλ for two cloud optical depths: 5 and 10. The aerosol optical depth at 0.55 μm is 0.2 (rural type of aerosol). Different dots correspond to different wavelengths from 0.4 to

347

Research Highlight  

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

Island-Induced Cloud Plumes Influence Tropical Atmospheric Measurements, Island-Induced Cloud Plumes Influence Tropical Atmospheric Measurements, Surface Radiation Submitter: McFarlane, S. A., U.S. Department of Energy Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: McFarlane, S.A., Long, C.N., and Flynn, D., Nauru Island Effect Study, Fourteenth ARM Science Team Meeting, March 22 to 26, 2004, Albuquerque, New Mexico. Nauru Island, about 1,200 miles northeast of Papua New Guinea in the western South Pacific, is one of three instrumented island sites that comprise ARM's Tropical Western Pacific locale. A key objective of the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Program is to identify interactions between the processes that determine the radiative properties of an atmospheric column, including

348

Biological & Environmental Research Abstracts Database  

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

ABBREVIATION DESCRIPTION ABBREVIATION DESCRIPTION AAVP ARM Aerial Vehicles Program ACP Atmospheric Chemistry Program ACP - CE ACP - Capital Equipment AmeriFlux AmeriFlux ARM Atmospheric Radiation Measurement (ARM) ARM - CE ARM - Capital Equipment ARM – Facility Atmospheric Radiation Measurement Climate Research Facility ARM – Facility- CCRI Atmospheric Radiation Measurement Climate Research Facility (Climate Change Research Initiative) ARM - Science Atmospheric Radiation Measurement Science Program ARM-CCRI ARM-CCRI ARM-Infrastr Atmospheric Radiation Measurement-Infrastructure Artificial Retina ASP Atmospheric Science Program

349

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

350

Thermodynamics of a desalination system at nuclear power stations  

Science Journals Connector (OSTI)

Nuclear power engineering is developing steadily in industrial countries. This is caused by features of using nuclear fuel and high environmental safety of nuclear power stations. At the same time, the thermodynamic efficiency of nuclear power stations is lower than indices of thermal power stations operating on gas, coal or oil fuel. This efficiency does not usually exceed 30â??35%. Hence more than 60% of the energy of nuclear fuel being used escapes into the environment through turbine condensers at nuclear power stations. Cogeneration turbines that reduce heat loss by 20â??30% are used at thermal power stations for efficiency upgrading. However, cogeneration schemes have not found wide utility at nuclear power stations due to safety conditions. Thus, it is possible to use, in addition, a major part of nuclear fuel energy for desalination at nuclear power stations located on the coast. In this case, some main problems are solved: production of fresh water consumed by nuclear power station for technological purposes and sold to external consumers; upgrading of effectiveness of using nuclear fuel including the cost of steady operation of nuclear power stations at high loads; reduction of non-productive thermal pollutants from nuclear power stations into the environment. It is required to provide maximum upgrading of power station heat efficiency and high capacity of distillers when connecting desalination installations to the thermal scheme of nuclear power stations. The use of energy of the heat carrier's low-temperature flows being emitted by turbine condensers into the environment is of particular value. In this case, different thermodynamic analysis methods are used for the justification of optimal engineering solutions In the article under consideration some results of research of thermodynamics of cycles of nuclear power stations where thermal schemes includes different types of thermal desalination installations are given. From the analysis of thermodynamic processes carried out at nuclear power stations, recommendations related to improvement of desalination installations' thermal schemes providing power system efficiency upgrading have been obtained.

V.V. Slesarenko

2003-01-01T23:59:59.000Z

351

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

352

Thermodynamics in Kaluza-Klein Universe  

E-Print Network [OSTI]

This paper is devoted to check the validity of laws of thermodynamics for Kaluza-Klein universe in the state of thermal equilibrium, composed of dark matter and dark energy. The generalized holographic dark energy and generalized Ricci dark energy models are considered here. It is proved that the first and generalized second law of thermodynamics are valid on the apparent horizon for both of these models. Further, we take a horizon of radius $L$ with modified holographic or Ricci dark energy. We conclude that these models do not obey the first and generalized second law of thermodynamics on the horizon of fixed radius $L$ for a specific range of model parameters.

Sharif, M

2014-01-01T23:59:59.000Z

353

Zeroth law compatibility of nonadditive thermodynamics  

Science Journals Connector (OSTI)

Nonextensive thermodynamics is criticized by the statement that the zeroth law cannot be satisfied with nonadditive composition rules. In this paper we determine the general functional form of those nonadditive composition rules that are compatible with the zeroth law of thermodynamics. We find that this general form is additive for the formal logarithms of the original quantities and the familiar relations of thermodynamics apply to these. Our result offers a possible solution to the long-standing questions about equilibrium between extensive and nonextensive systems or systems with different nonextensivity parameters.

T. S. Biró and P. Ván

2011-06-27T23:59:59.000Z

354

Thermodynamics in Kaluza-Klein Universe  

E-Print Network [OSTI]

This paper is devoted to check the validity of laws of thermodynamics for Kaluza-Klein universe in the state of thermal equilibrium, composed of dark matter and dark energy. The generalized holographic dark energy and generalized Ricci dark energy models are considered here. It is proved that the first and generalized second law of thermodynamics are valid on the apparent horizon for both of these models. Further, we take a horizon of radius $L$ with modified holographic or Ricci dark energy. We conclude that these models do not obey the first and generalized second law of thermodynamics on the horizon of fixed radius $L$ for a specific range of model parameters.

M. Sharif; Rabia Saleem

2013-12-13T23:59:59.000Z

355

Statistical thermodynamics of 1-butanol, 2-methyl-1-propanol, and butanal Prasenjit Seal, Ewa Papajak, Tao Yu, and Donald G. Truhlar  

E-Print Network [OSTI]

are in excellent agree- ment with experimental data taken from the Thermodynamics Research Center data series- tant roles in alternative-fuel combustion.1­5 Therefore, accu- rate estimation of the thermodynamic the group additivity values. In other cases, where experimental data (but not group additivity values

Truhlar, Donald G

356

Research Highlight  

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

Weather and Atmospheric Overview During Study of Natural and Urban Weather and Atmospheric Overview During Study of Natural and Urban Emissions (CARES) Download a printable PDF Submitter: Fast, J. ., Pacific Northwest National Laboratory Area of Research: Aerosol Properties Working Group(s): Aerosol Life Cycle Journal Reference: Fast JD, WI Gustafson, LK Berg, WJ Shaw, M Pekour, M Shrivastava, JC Barnard, RA Ferrare, CA Hostetler, JA Hair, M Erickson, BT Jobson, B Flowers, MK Dubey, S Springston, RB Pierce, L Dolislager, J Pederson, and RA Zaveri. 2012. "Transport and mixing patterns over central California during the Carbonaceous Aerosol and Radiative Effects Study (CARES)." Atmospheric Chemistry and Physics, 12, 1759-1783. Aircraft sampling flight patterns are shown over central California in this aerial overlay. Researchers collected and analyzed measurements from

357

Research Highlight  

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

Global Dimming and Brightening: an Update Beyond 2000 Global Dimming and Brightening: an Update Beyond 2000 Download a printable PDF Submitter: Long, C. N., Pacific Northwest National Laboratory Wild, M., Institute for Atmospheric and Climate Science - ETH Zurich Truessel, B., Institute for Atmospheric and Climate Science - ETH Zurich Ohmura, A., Swiss Federal Institute of Technology Koenig-Langlo, G., Alfred Wegener Institute Dutton, E. G., NOAA/OAR/ESRL Tsvetkov, A. V., World Radiation Data Centre Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: Wild M, B Trüssel, A Ohmura, CN Long, G König-Langlo, EG Dutton, and A Tsvetkov. 2009. "Global dimming and brightening: An update beyond 2000." Journal of Geophysical Research - Atmospheres, 114, D00D13, 10.1029/2008JD011382.

358

Research Highlight  

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

A Downwelling Infrared Radiance Climatology for the ARM Southern Great A Downwelling Infrared Radiance Climatology for the ARM Southern Great Plains Site Download a printable PDF Submitter: Turner, D. D., National Oceanic and Atmospheric Administration Gero, J., University of Wisconsin Area of Research: Radiation Processes Working Group(s): Cloud Life Cycle Journal Reference: Turner DD and PJ Gero. 2011. "Downwelling infrared radiance temperature climatology for the Atmospheric Radiation Measurement Southern Great Plains site." Journal of Geophysical Research - Atmospheres, 116, D08212, doi:10.1029/2010JD015135. The distribution of downwelling 10-micron infrared radiance observed at the SGP site by the AERI from June 1996 to May 2010, separated into all-sky (all samples) and the three distinct sky classifications.

359

Research Highlight  

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

Desert Dust Determines Aerial Spread of Thunderstorm Clouds Desert Dust Determines Aerial Spread of Thunderstorm Clouds Submitter: Bhattacharya, A., Pacific Northwest National Laboratory Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Life Cycle Journal Reference: Zeng X, W Tao, SW Powell, RA Houze, P Ciesielski, N Guy, H Pierce, and T Matsui. 2013. "A comparison of the water budgets between clouds from AMMA and TWP-ICE." Journal of the Atmospheric Sciences, 70(2), doi:10.1175/JAS-D-12-050.1. The sun, seen through a dusty atmosphere, sets at Niamey, the capital of Niger, which is located in the African Sahara. Anvil clouds that accompany thunderstorms. Contrasts often provide unique perspectives, and scientists seize any such opportunity-when it arises. In a new research paper, published in the Journal of Atmospheric Sciences,

360

THERMODYNAMIC TABLES FOR NUCLEAR WASTE ISOLATION, V.1: AQUEOUSSOLUTIONS DATABASE  

SciTech Connect (OSTI)

Tables of consistent thermodynamic property values for nuclear waste isolation are given. The tables include critically assessed values for Gibbs energy of formation. enthalpy of formation, entropy and heat capacity for minerals; solids; aqueous ions; ion pairs and complex ions of selected actinide and fission decay products at 25{sup o}C and zero ionic strength. These intrinsic data are used to calculate equilibrium constants and standard potentials which are compared with typical experimental measurements and other work. Recommendations for additional research are given.

Phillips, S.L.; Hale, F.V.; Silvester, L.F.

1988-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Friedmann Thermodynamics and the Geometry of the Universe  

E-Print Network [OSTI]

In a recent article we have introduced Friedmann thermodynamics, where certain geometric parameters in Friedmann models are treated like their thermodynamic counterparts (temperature, entropy, Gibbs potential etc.). This model has the advantage of allowing us to determine the geometry of the universe by thermodynamic stability arguments. In this article we review connections between thermodynamics, geometry and cosmology.

Selcuk S. Bayin

2008-04-01T23:59:59.000Z

362

Thermodynamics of high-temperature nuclear fuel  

Science Journals Connector (OSTI)

A method for performing a thermodynamic analysis of the high-temperature nuclear fuel using the ASTA computer program is substantiated. Calculations of the chemical composition and pressure of the gas phase of...

I. A. Belov; A. S. Ivanov

363

Thermodynamical interpretation of gravity in braneworld scenarios  

SciTech Connect (OSTI)

We study the thermodynamical properties of the apparent horizon in the various braneworld scenarios. First, we show that the Friedmann equations can be written directly in the form of the first law of thermodynamics, dE = T{sub h}dS{sub h}+WdV, at apparent horizon on the brane, regardless of whether there is the intrinsic curvature term on the brane or a Gauss-Bonnet term in the bulk. This procedure leads to extract an entropy expression in terms of horizon geometry associated with the apparent horizon. Then, we examine the time evolution of the total entropy, including the derived entropy of the apparent horizon and the entropy of the matter fields inside the apparent horizon. We find that the derived entropy of the apparent horizon on the brane satisfies the generalized second law of thermodynamics in braneworld scenarios. These results further support the idea that gravitation on a macroscopic scale is a manifestation of thermodynamics.

Sheykhi, Ahmad, E-mail: sheykhi@mail.uk.ac.ir [Department of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of)] [Department of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of)

2009-05-15T23:59:59.000Z

364

Centenary of the Second Law of Thermodynamics  

Science Journals Connector (OSTI)

... IT is almost exactly a hundred years since what is now known as the second law of ... of thermodynamics was formulated. The honour of first making the general statement that "heat cannot of ...

J. A. V. Butler

1950-02-04T23:59:59.000Z

365

Thermodynamics of Eastern Mediterranean Rainfall Variability  

Science Journals Connector (OSTI)

This note focuses on thermodynamic changes caused by Eastern Mediterranean (EM) subsidence anomalies. Subsidence anomalies are shown to modulate EM-wide stability with respect to moist ascent. Additionally, convective available potential energy (...

Gidon Eshel; Brian F. Farrell

2001-01-01T23:59:59.000Z

366

QCD Thermodynamics on the Lattice: Recent Results  

E-Print Network [OSTI]

I give a brief introduction to the goals, challenges, and technical difficulties of lattice QCD thermodynamics and present some recent results from the HotQCD collaboration for the crossover temperature, equation of state, and other observables.

Carleton DeTar

2010-12-31T23:59:59.000Z

367

Thermodynamics of radiation-balanced lasing  

Science Journals Connector (OSTI)

Athermal lasers dispose of their waste heat in the form of spontaneous fluorescence (i.e., by laser cooling) to avoid warming the medium. The thermodynamics of this process is...

Mungan, Carl E

2003-01-01T23:59:59.000Z

368

Linear Thermodynamics of Rodlike DNA Filtration  

E-Print Network [OSTI]

Linear thermodynamics transportation theory is employed to study filtration of rodlike DNA molecules. Using the repeated nanoarray consisting of alternate deep and shallow regions, it is demonstrated that the complex ...

Li, Zirui

369

Thermodynamics and the measure of entanglement  

Science Journals Connector (OSTI)

We point out formal correspondences between thermodynamics and entanglement. By applying them to previous work, we show that entropy of entanglement is the unique measure of entanglement for pure states.

Sandu Popescu and Daniel Rohrlich

1997-11-01T23:59:59.000Z

370

Thermodynamics of daylight-pumped lasers  

Science Journals Connector (OSTI)

We cast the problem of very-low-threshold, daylight-pumped lasers in a general thermodynamic framework. We calculate that the requirements to reach threshold are that the Stokes shift...

Roxlo, C B; Yablonovitch, Eli

1983-01-01T23:59:59.000Z

371

Thermodynamic and kinetic modeling of transcriptional pausing  

E-Print Network [OSTI]

on the thermodynamic stability of the EC along the DNA template calculated from the sequence-depen- dent free energy fluctuations of the transcription bubble; (ii) changes in the associated DNA­RNA hybrid; and (iii) changes

Chen, Kuang-Yu

372

Measuring Nighttime Atmospheric Opacity Using Images From the Mars Exploration Rovers  

E-Print Network [OSTI]

of the requirements for the designation as UNDERGRADUATE RESEARCH SCHOLAR A Senior Scholars Thesis by KERI MARIE BEAN MEASURING NIGHTTIME ATMOSPHERIC OPACITY USING IMAGES FROM THE MARS EXPLORATION ROVERS Approved by: Research Advisor: Mark...&M University Research Advisor: Dr. Mark Lemmon Department of Atmospheric Sciences Atmospheric opacity, otherwise known as optical depth, is the measurement of the amount of radiation reaching the surface through the atmosphere. The spatial and temporal...

Bean, Keri M

2012-07-11T23:59:59.000Z

373

Research Article Using NHDPlus as the Land Base for the  

E-Print Network [OSTI]

Laboratory National Center for Atmospheric Research, Boulder, Colorado David R Maidment Center for Research for Atmospheric Research, Boulder, Colorado David N Yates Research Applications Laboratory National Center for Atmospheric Research Boulder, Colorado Zong-Liang Yang Department of Geological Sciences John A. and Katherine

Yang, Zong-Liang

374

Thermodynamics of multiferroic spin chains  

Science Journals Connector (OSTI)

The minimal model to describe many spin-chain materials with ferroelectric properties is the Heisenberg model with ferromagnetic nearest-neighbor coupling J1 and antiferromagnetic next-nearest-neighbor coupling J2. Here we study the thermodynamics of this model using a density-matrix algorithm applied to transfer matrices. We find that the incommensurate spin-spin correlations—crucial for the ferroelectric properties and the analog of the classical spiral pitch angle—depend not only on the ratio J2/|J1| but also strongly on temperature. We study small easy-plane anisotropies which can stabilize a vector chiral order as well as the finite-temperature signatures of multipolar phases, stable at finite magnetic field. Furthermore, we fit the susceptibilities of LiCuVO4, LiCu2O2, and Li2ZrCuO4. Contrary to the literature, we find that for LiCuVO4 the best fit is obtained with J2?90?K and J2/|J1|?0.5 and show that these values are consistent with the observed spin incommensurability. Finally, we discuss our findings concerning the incommensurate spin-spin correlations and multipolar orders in relation to future experiments on these compounds.

J. Sirker

2010-01-26T23:59:59.000Z

375

Thermodynamic restrictions on mechanosynthesis of strontium titanate  

SciTech Connect (OSTI)

Chemical potential phase stability diagrams were calculated from relevant thermodynamic properties and used to predict the thermodynamic driving force under prospective conditions of room temperature mechanosynthesis. One analysed the dependence of chemical potential diagrams on temperature and partial pressure of evolving gases such as oxygen or carbon dioxide, as expected on using strontium peroxide or strontium carbonate as precursor reactants for the alkali earth component. Thermodynamic calculations were also obtained for changes in titania precursor reactants, including thermodynamic predictions for reactivity of strontium carbonate with amorphous titania. Experimental evidence showed that strontium titanate can be obtained by mechanosynthesis of strontium carbonate+anatase mixtures, due to previous amorphization under high energy milling. Ability to perform mechanosynthesis with less energetic milling depends on the suitable choice of alternative precursor reactants, which meet the thermodynamic requirements without previous amorphization; this was demonstrated by mechanosynthesis from anatase+strontium peroxide mixtures. - Graphical abstract: X-Ray diffractograms of the starting TiO{sub 2} (anatase)+SrCO{sub 3} mixture and after mechanical activation at 650 rpm, for 1, 2, and 7 h. Different symbols are used to identify reflections ascribed to anatase (diamonds), SrCO{sub 3} (squares) and SrTiO{sub 3} (triangles). Highlights: Black-Right-Pointing-Pointer Prediction of thermodynamic driving force for room temperature mechanosynthesis. Black-Right-Pointing-Pointer Dependence of chemical potential diagrams on temperature and partial pressure. Black-Right-Pointing-Pointer Thermodynamic calculations for changes in titania precursor. Black-Right-Pointing-Pointer Experimental support for thermodynamic predictions.

Monteiro, J.F. [Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal); Ferreira, A.A.L. [Instituto Politecnico de Viana do Castelo, 4900-347 Viana do Castelo (Portugal); Antunes, I. [Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal); Fagg, D.P., E-mail: duncan@ua.pt [Centro de Tecnologia Mecanica e Automacao, Departamento de Engenharia Mecanica, Universidade de Aveiro, 3810-193 Aveiro (Portugal); Frade, J.R. [Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)

2012-01-15T23:59:59.000Z

376

Tables of thermodynamic properties of sodium  

SciTech Connect (OSTI)

The thermodynamic properties of saturated sodium, superheated sodium, and subcooled sodium are tabulated as a function of temperature. The temperature ranges are 380 to 2508 K for saturated sodium, 500 to 2500 K for subcooled sodium, and 400 to 1600 K for superheated sodium. Tabulated thermodynamic properties are enthalpy, heat capacity, pressure, entropy, density, instantaneous thermal expansion coefficient, compressibility, and thermal pressure coefficient. Tables are given in SI units and cgs units.

Fink, J.K.

1982-06-01T23:59:59.000Z

377

Thermodynamics of interacting holographic dark energy  

E-Print Network [OSTI]

The thermodynamics of a scheme of dark matter-dark energy interaction is studied considering a holographic model for the dark energy in a flat Friedmann-Lemaitre-Robertson-Walker background. We obtain a total entropy rate for a general horizon and study the Generalized Second Law of Thermodynamics. In addition, we study two horizons related to the Ricci and Ricci-like model and its effect on an interacting system.

Arevalo, Fabiola; Pena, Francisco

2014-01-01T23:59:59.000Z

378

Thermodynamics of (2+1)-flavor QCD  

E-Print Network [OSTI]

We report on the status of our QCD thermodynamics project. It is performed on the QCDOC machine at Brookhaven National Laboratory and the APEnext machine at Bielefeld University. Using a 2+1 flavor formulation of QCD at almost realistic quark masses we calculated several thermodynamical quantities. In this proceeding we show the susceptibilites of the chiral condensate and the Polyakov loop, the static quark potential and the spatial string tension.

C. Schmidt; T. Umeda

2006-09-21T23:59:59.000Z

379

Composition of a thermal plasma formed from PTFE with copper in non-oxidant atmosphere.  

E-Print Network [OSTI]

1 Composition of a thermal plasma formed from PTFE with copper in non-oxidant atmosphere. Part I the minimization of given thermodynamic functions or mass action laws even with plasmas out of thermal equilibrium- . Key Words: circuit breakers, SF6, PTFE, carbon formation, copper, dielectric gas, plasma composition

Paris-Sud XI, Université de

380

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

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Short Communication Kinetics and thermodynamics of heavy metal ions sequestration onto novel  

E-Print Network [OSTI]

biomasses had been chosen and utilized by researchers to sequester toxic heavy metal ions from industrialShort Communication Kinetics and thermodynamics of heavy metal ions sequestration onto novel is generally considered as the most toxic metal in natural ecosystems (Clarkson, 1993). Over the years, various

Gong, Jian Ru

382

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

383

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

384

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...

385

Graphite Oxidation Thermodynamics/Reactions  

SciTech Connect (OSTI)

The vulnerability of graphite-matrix spent nuclear fuel to oxidation by the ambient atmosphere if the fuel canister is breached was evaluated. Thermochemical and kinetic data over the anticipated range of storage temperatures (200 to 400 C) were used to calculate the times required for a total carbon mass loss of 1 mgcm-2 from a fuel specimen. At 200 C, the time required to produce even this small loss is large, 900,000 yr. However, at 400 C the time required is only 1.9 yr. The rate of oxidation at 200 C is negligible, and the rate even at 400 C is so small as to be of no practical consequence. Therefore, oxidation of the spent nuclear fuel upon a loss of canister integrity is not anticipated to be a concern based upon the results of this study.

Propp, W.A.

1998-09-01T23:59:59.000Z

386

Thermodynamics and Relativity: A Message to Physics Teachers (for an easier understanding of the thermodynamic theory)  

E-Print Network [OSTI]

Whoever has to learn or to teach thermodynamics is confronted with conceptual difficulties which are specific to this field of physics ([1],[2]). It seems that they can be eliminated by inserting relativity in the thermodynamic theory. The aim of this paper is to summarize the problem and draw attention upon a fundamental point of the discussion.

Jean-Louis Tane

2007-11-27T23:59:59.000Z

387

Fifteenth combustion research conference  

SciTech Connect (OSTI)

The BES research efforts cover chemical reaction theory, experimental dynamics and spectroscopy, thermodynamics of combustion intermediates, chemical kinetics, reaction mechanisms, combustion diagnostics, and fluid dynamics and chemically reacting flows. 98 papers and abstracts are included. Separate abstracts were prepared for the papers.

NONE

1993-06-01T23:59:59.000Z

388

Research Highlight  

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

ARM Measurements Help to Evaluate Radiation Codes Used in Global Modeling ARM Measurements Help to Evaluate Radiation Codes Used in Global Modeling Download a printable PDF Submitter: Oreopoulos, L., NASA Mlawer, E. J., Atmospheric & Environmental Research, Inc. Area of Research: Radiation Processes Working Group(s): Cloud Life Cycle Journal Reference: Oreopoulos L, E Mlawer, J Delamere, T Shippert, J Cole, B Fomin, M Iacono, Z Jin, J Li, J Manners, P Raisanen, F Rose, Y Zhang, MJ Wilson, and WB Rossow. 2012. "The Continual Intercomparison of Radiation Codes: results from Phase I." Journal of Geophysical Research - Atmospheres, 117, doi:10.1029/2011JD016821. The total error of each participating radiation code for all LW (left) and SW (right) cases in the CIRC intercomparison. The identity of each participating code can be found in the paper; codes built due to ARM

389

Research Highlight  

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

Modified Climate Model Better Replicates Global Rainfall Modified Climate Model Better Replicates Global Rainfall Submitter: Bhattacharya, A., Pacific Northwest National Laboratory Area of Research: Cloud-Aerosol-Precipitation Interactions Working Group(s): Cloud-Aerosol-Precipitation Interactions Journal Reference: Song X, GJ Zhang, and JF Li. 2012. "Evaluation of microphysics parameterization for convective clouds in the NCAR Community Atmosphere Model CAM5." Journal of Climate, 25(24), doi:10.1175/JCLI-D-11-00563.1. Rainfall in the tropics. By improving an existing, sophisticated, global climate model, scientists can now simulate cloud and rainfall more accurately. Supported by the U.S. Department of Energy's Atmospheric System Research program, a research team from the Scripps Institution of Oceanography and

390

Research Highlight  

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

Improving Water Vapor Continuum Absorption and Its Impact on a GCM Improving Water Vapor Continuum Absorption and Its Impact on a GCM Simulation Download a printable PDF Submitter: Turner, D. D., National Oceanic and Atmospheric Administration Mlawer, E. J., Atmospheric & Environmental Research, Inc. Area of Research: Radiation Processes Working Group(s): Cloud Life Cycle Journal Reference: Turner DD, A Merrelli, D Vimont, and EJ Mlawer. 2012. "Impact of modifying the longwave water vapor continuum absorption model on community Earth system model simulations." Journal of Geophysical Research, 117, D04106, doi:10.1029/2011JD016440. The mean difference profiles (experiment minus control) for clear-sky longwave radiative heating (QRLC); shortwave clear-sky radiative heating (QRSC); the longwave cloud radiative forcing (QRLCF); the precipitation

391

Research Highlight  

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

ARM Program Research Improves Longwave Radiative Transfer Models ARM Program Research Improves Longwave Radiative Transfer Models Submitter: Turner, D. D., National Oceanic and Atmospheric Administration Area of Research: General Circulation and Single Column Models/Parameterizations Working Group(s): Radiative Processes Journal Reference: The QME AERI LBLRTM: A closure experiment for downwelling high spectral resolution infrared radiance. D.D. Turner, D.C. Tobin, S.A. Clough, P.D. Brown, R.G. Ellingson, E.J. Mlawer, R.O. Knuteson, H.E. Revercomb, T.R. Shippert, and W.L. Smith. 2004. Journal of Atmospheric Science, 61, 2657-2675. Top panels: Examples of downwelling infrared radiance observed by the AERI for two different clear sky cases with different amounts of water vapor. Bottom panels: Differences between the AERI observations and calculations

392

An Experimental Investigation of the Thermodynamical Properties of Super-Heated Steam. On the Cooling of Saturated Steam by Free Expansion  

Science Journals Connector (OSTI)

...research-article An Experimental Investigation of the Thermodynamical Properties of Super-Heated Steam. On the Cooling of Saturated Steam by Free Expansion John H. Grindley The Royal Society is collaborating with JSTOR to digitize, preserve...

1900-01-01T23:59:59.000Z

393

E-Print Network 3.0 - approaching thermodynamic property Sample...  

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

for: approaching thermodynamic property Page: << < 1 2 3 4 5 > >> 1 AME 327: Thermodynamics I CATALOG DATA Summary: in engineering thermodynamics. The course uses the...

394

ACARS Aerodynamic (Research Incorporated) Communication and Recording System  

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

ix ix Acrononyms and Abbreviations Acronyms and Abbreviations ACARS Aerodynamic (Research Incorporated) Communication and Recording System ACSYS Arctic Climate System Study AER Atmospheric Environmental Research, Inc. AERI Atmospheric Emitted Radiance Interferometer AFOSR Air Force Office of Scientific Research AGARD Advisory Group for Aerospace Research and Development ALFA AER Local Forecast and Assimilation (model) AMIP Atmospheric Model Intercomparison Project ARCS Atmosphere Radiation and Cloud Stations ARCSS Arctic System Science (NSF) ARCSYM Arctic Regional Climate System Model ARINC Aerodynamic Research Incorporated Communication ARM Atmospheric Radiation Measurement program AS anvil stratus ASTER Atmosphere-Surface Turbulent Exchange Research ASTEX Altantic Stratocumulus Transition EXperiment

395

Vehicle Research Laboratory - FEERC  

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

Vehicle Research Laboratory Vehicle Research Laboratory Expertise The overall FEERC team has been developed to encompass the many disciplines necessary for world-class fuels, engines, and emissions-related research, with experimental, analytical, and modeling capabilities. Staff members specialize in areas including combustion and thermodynamics, emissions measurements, analytical chemistry, catalysis, sensors and diagnostics, dynamometer cell operations, engine controls and control theory. FEERC engineers have many years of experience in vehicle research, chassis laboratory development and operation, and have developed specialized systems and methods for vehicle R&D. Selected Vehicle Research Topics In-use investigation of Lean NOx Traps (LNTs). Vehicle fuel economy features such as lean operation GDI engines,

396

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

397

Appreciating the Role of Thermodynamics in LCA Improvement Analysis via an Application to Titanium Dioxide Nanoparticles  

Science Journals Connector (OSTI)

Appreciating the Role of Thermodynamics in LCA Improvement Analysis via an Application to Titanium Dioxide Nanoparticles ... Most available improvement approaches are highly subjective, and traditional LCA methods often do not account for resources other than fossil fuels. ... Current research policy and strategy documents recommend applying life cycle assessment (LCA) early in research and development (R&D) to guide emerging technologies toward decreased environmental burden. ...

Geoffrey F. Grubb; Bhavik R. Bakshi

2011-03-01T23:59:59.000Z

398

Research Highlight  

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

Preferred States of the Winter Arctic Atmosphere, Surface, and Sub-Surface Preferred States of the Winter Arctic Atmosphere, Surface, and Sub-Surface Download a printable PDF Submitter: Del Genio, A. D., NASA Area of Research: Surface Properties Working Group(s): Cloud Life Cycle Journal Reference: Stramler K, AD Del Genio, and WB Rossow. 2011. "Synoptically driven Arctic winter states." Journal of Climate, 24(6), doi:10.1175/2010JCLI3817.1. SHEBA winter hourly surface net (down - up) longwave radiation flux versus surface temperature. Blue circles indicate times when a combined radar-lidar cloud detection indicated clear skies, and red plus signs indicate times when clouds were detected. Time series of SHEBA winter hourly temperatures at the atmospheric temperature inversion altitude (magenta), surface (black), snow-sea ice

399

Research Highlight  

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

Modification of the Atmospheric Boundary Layer by a Small Island: Modification of the Atmospheric Boundary Layer by a Small Island: Observations from Nauru Submitter: Long, C. N., Pacific Northwest National Laboratory Area of Research: Cloud Distributions/Characterizations Working Group(s): Radiative Processes Journal Reference: Matthews, S., J. M. Hacker, J. Cole, J. Hare, C. N. Long, and R. M. Reynolds, (2007): Modification of the atmospheric boundary layer by a small island: observations from Nauru, MWR, Vol. 135, No. 3, pages 891–905. Figure 1. Illustration of daytime heating producing a thermal internal boundary layer effect over Nauru, which in turn produces cumulous clouds above the boundary layer. Figure 2. Illustration of Nauru heat-island produced by convective rolls forming cloud streets. Figure 3. Satellite images of Nauru on December 13, 2000 showing the cloud

400

Research Highlight  

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

Comparing Global Atmospheric Model Simulations of Tropical Convection Comparing Global Atmospheric Model Simulations of Tropical Convection Download a printable PDF Submitter: Lin, Y., Geophysical Fluid Dynamics Laboratory Area of Research: General Circulation and Single Column Models/Parameterizations Working Group(s): Cloud Life Cycle Journal Reference: N/A Mean profiles of (first column) total precipitation normalized Q1, (second column) convective precipitation normalized convective heating, (third column) stratiform heating, and (fourth column) convective mass flux for the (top) wet, (middle) dry, and (bottom) break period from models and available observational estimates. Dashed lines are fine resolution model results. Note the different x axis scale for the third and fourth columns. An intercomparison of global atmospheric model simulations of tropical

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Research Highlight  

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

First Measurements of Neutral Atmospheric Cluster and 1-2 Nm Particle First Measurements of Neutral Atmospheric Cluster and 1-2 Nm Particle Number Distributions During Nucleation Events Download a printable PDF Submitter: McMurry, P. ., University of Minnesota Area of Research: Aerosol Properties Working Group(s): Aerosol Life Cycle Journal Reference: Jiang J, J Zhao, M Chen, J Scheckman, BJ Williams, FL Eisele, and PH McMurry. 2011. "First measurements of neutral atmospheric cluster and 1-2 nm particle number distributions during nucleation events." Aerosol Science and Technology, 45, doi:10.1080/02786826.2010.546817. Jiang J, M Chen, C Kuang, M Attoui, and PH McMurry. 2011. "Electrical mobility spectrometer using a diethylene glycol condensation particle counter for measurement of aerosol size distributions down to 1 nm."

402

Research Highlight  

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

Dynamics and Atmospheric State on Cloud Vertical Overlap Dynamics and Atmospheric State on Cloud Vertical Overlap Download a printable PDF Submitter: Naud, C. M., Columbia University/NASA Goddard Institute for Space Studies Del Genio, A. D., NASA Mace, G., Utah State University Benson, S., Utah State University Clothiaux, E. E., Pennsylvania State University Kollias, P., McGill University Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Modeling Journal Reference: Naud, C, A Del Genio, GG Mace, S Benson, EE Clothiaux, and P Kollias. "Impact of dynamics and atmospheric state on cloud vertical overlap." Journal of Climate 218: 1758-1770. Mean overlap parameter α as a function of separation: (a,b) at SGP for all winter months of 2002-2004 and for 4 subsets of increasing 500 mb ω such

403

Research Highlight  

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

Indirect Impact of Atmospheric Aerosols on an Ensemble of Deep Convective Indirect Impact of Atmospheric Aerosols on an Ensemble of Deep Convective Clouds Download a printable PDF Submitter: Grabowski, W., NCAR Morrison, H. C., NCAR Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud-Aerosol-Precipitation Interactions Journal Reference: Grabowski WW and H Morrison. 2011. "Indirect impact of atmospheric aerosols in idealized simulations of convective-radiative quasi-equilibrium. Part II: Double-moment microphysics." Journal of Climate, 24, 1897-1912. This paper extends the previous cloud-resolving modeling study concerning the impact of cloud microphysics on convective-radiative quasi-equilibrium (CRQE) over a surface with fixed characteristics and prescribed solar input, both mimicking the mean conditions on Earth. The current study

404

Research Highlight  

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

Splitting the Solar Spectrum: Sometimes Less Is Better Than More Splitting the Solar Spectrum: Sometimes Less Is Better Than More Submitter: Pawlak, D. T., Pennsylvania State University Area of Research: General Circulation and Single Column Models/Parameterizations Working Group(s): Cloud Modeling Journal Reference: Pawlak, DT, EJ Clothiaux, MF Modest, and JNS Cole. 2004. Full-Spectrum Correlated-k Distribution for Shortwave Atmospheric Radiative Transfer. Journal of the Atmospheric Sciences 61: 2588-2601. Of all the physical and dynamical calculations required in numerical weather prediction and climate modeling, radiation calculations consume the most computational time. This is because the radiation transfer physics of the atmosphere involve molecular absorption that occurs in narrowly defined absorption bands of the electromagnetic spectrum. The exact location in the

405

E-Print Network 3.0 - atmospheric turbulence utilizing Sample...  

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

of atmospheric particles; Cloud turbulence... but for the dissipation rate of turbulence energy s800 cm2 sy3 . 12;( )M. Pinsky et al.rAtmospheric Research 49 1998 99... , and...

406

Simple thermodynamic diagrams for real refrigeration systems  

Science Journals Connector (OSTI)

The thermodynamic performance of real irreversible cooling and refrigeration systems (chillers) can be summarized in simple rectangular temperature-entropy diagrams in analogy to classic pedagogical examples for idealized reversible devices. The key to translating complex dissipative losses into this graphical framework is the process average temperature—a factor that can be calculated from nonintrusive experimental measurements for converting entropy production into lost work. An uncomplicated thermodynamic model is used to transform the governing chiller performance equations into an easily-interpreted graph. Examples based upon actual data from commercial work-driven (reciprocating) and heat-driven (absorption) chillers are presented and are used to highlight the predominance of internal dissipation in determining chiller efficiency. With the thermodynamic diagram representation the relative roles of each irreversibility source as well as the reversible and endoreversible limits become transparent.

J. M. Gordon; K. C. Ng; H. T. Chua

1999-01-01T23:59:59.000Z

407

The Rectified Second Law of Thermodynamics  

Science Journals Connector (OSTI)

The general form of the rectified second law is further applied to a broad class of quasi-static irreverisble (QSI) processes, for which all of the thermodynamic functions of both the system and surroundings remain continuously well-defined, thus facilitating excess entropy measurements by integrating exact differential functions along QSI paths. ... It is instructive to recall that the discovery of this profound principle of nature originally emerged from the practical concerns of nineteenth century industrialists who desired to increase the efficiency of steam engines.1 Although the second law of thermodynamics may be stated in a myriad of ways, in the Introduction to his famous paper On the Equilibrium of Heterogeneous Substances2 Gibbs quoted Clausius' remarkably concise statement of the first and second laws of thermodynamics (as translated from German): ...

Dor Ben-Amotz; J. M. Honig

2006-07-14T23:59:59.000Z

408

Towards a 'Thermodynamics' of Active Matter  

E-Print Network [OSTI]

Self-propulsion allows living systems to display unusual collective behavior. Unlike passive systems in thermal equilibrium, active matter systems are not constrained by conventional thermodynamic laws. A question arises however as to what extent, if any, can concepts from classical thermodynamics be applied to nonequilibrium systems like active matter. Here we use the new swim pressure perspective to develop a simple theory for predicting phase separation in active matter. Using purely mechanical arguments we generate a phase diagram with a spinodal and critical point, and define a nonequilibrium chemical potential to interpret the "binodal." We provide a generalization of thermodynamic concepts like the free energy and temperature for nonequilibrium active systems. Our theory agrees with existing simulation data both qualitatively and quantitatively and may provide a framework for understanding and predicting the behavior of nonequilibrium active systems.

Sho C. Takatori; John F. Brady

2014-11-21T23:59:59.000Z

409

Thermodynamics of pairing in mesoscopic systems  

E-Print Network [OSTI]

Using numerical and analytical methods implemented for different models we conduct a systematic study of thermodynamic properties of pairing correlation in mesoscopic nuclear systems. Various quantities are calculated and analyzed using the exact solution of pairing. An in-depth comparison of canonical, grand canonical, and microcanonical ensemble is conducted. The nature of the pairing phase transition in a small system is of a particular interest. We discuss the onset of discontinuity in the thermodynamic variables, fluctuations, and evolution of zeros of the canonical and grand canonical partition functions in the complex plane. The behavior of the Invariant Correlational Entropy is also studied in the transitional region of interest. The change in the character of the phase transition due to the presence of magnetic field is discussed along with studies of superconducting thermodynamics.

Tony Sumaryada; Alexander Volya

2007-06-12T23:59:59.000Z

410

Thermodynamics of Hydrogen Production from Dimethyl Ether Steam Reforming and Hydrolysis  

SciTech Connect (OSTI)

The thermodynamic analyses of producing a hydrogen-rich fuel-cell feed from the process of dimethyl ether (DME) steam reforming were investigated as a function of steam-to-carbon ratio (0-4), temperature (100 C-600 C), pressure (1-5 atm), and product species: acetylene, ethanol, methanol, ethylene, methyl-ethyl ether, formaldehyde, formic acid, acetone, n-propanol, ethane and isopropyl alcohol. Results of the thermodynamic processing of dimethyl ether with steam indicate the complete conversion of dimethyl ether to hydrogen, carbon monoxide and carbon dioxide for temperatures greater than 200 C and steam-to-carbon ratios greater than 1.25 at atmospheric pressure (P = 1 atm). Increasing the operating pressure was observed to shift the equilibrium toward the reactants; increasing the pressure from 1 atm to 5 atm decreased the conversion of dimethyl ether from 99.5% to 76.2%. The order of thermodynamically stable products in decreasing mole fraction was methane, ethane, isopropyl alcohol, acetone, n-propanol, ethylene, ethanol, methyl-ethyl ether and methanol--formaldehyde, formic acid, and acetylene were not observed. The optimal processing conditions for dimethyl ether steam reforming occurred at a steam-to-carbon ratio of 1.5, a pressure of 1 atm, and a temperature of 200 C. Modeling the thermodynamics of dimethyl ether hydrolysis (with methanol as the only product considered), the equilibrium conversion of dimethyl ether is limited. The equilibrium conversion was observed to increase with temperature and steam-to-carbon ratio, resulting in a maximum dimethyl ether conversion of approximately 68% at a steam-to-carbon ratio of 4.5 and a processing temperature of 600 C. Thermodynamically, dimethyl ether processed with steam can produce hydrogen-rich fuel-cell feeds--with hydrogen concentrations exceeding 70%. This substantiates dimethyl ether as a viable source of hydrogen for PEM fuel cells.

T.A. Semelsberger

2004-10-01T23:59:59.000Z

411

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

412

Thermodynamic relations for DNA phase transitions  

E-Print Network [OSTI]

The force induced unzipping transition of a double stranded DNA is considered from a purely thermodynamic point of view. This analysis provides us with a set of relations that can be used to test microscopic theories and experiments. The thermodynamic approach is based on the hypothesis of impenetrability of the force in the zipped state. The melting and the unzipping transitions are considered in the same framework and compared with the existing statistical model results. The analysis is then extended to a possible continuous unzipping transition.

Poulomi Sadhukhan; Somendra M. Bhattacharjee

2014-01-21T23:59:59.000Z

413

Measurement of thermodynamics using gradient flow  

E-Print Network [OSTI]

We analyze bulk thermodynamics and correlation functions of the energy-momentum tensor in pure Yang-Mills gauge theory using the energy-momentum tensor defined by the gradient flow and small flow time expansion. Our results on thermodynamic observables are consistent with those obtained by the conventional integral method. The analysis of the correlation function of total energy supports the energy conservation. It is also addressed that these analyses with gradient flow require less statistics compared with the previous methods. All these results suggest that the energy-momentum tensor can be successfully defined and observed on the lattice with moderate numerical costs with the gradient flow.

Masakiyo Kitazawa; Masayuki Asakawa; Tetsuo Hatsuda; Takumi Iritani; Etsuko Itou; Hiroshi Suzuki

2014-12-15T23:59:59.000Z

414

The thermodynamics of a gravitating vacuum  

E-Print Network [OSTI]

In the present days of modern cosmology it is assumed that the main ingredient to cosmic energy presently is vacuum energy with an energy density $\\epsilon_\\mathrm{vac}$ that is constant over the cosmic evolution. In this paper here we show, however, that this assumption of constant vacuum energy density is unphysical, since it conflicts with the requirements of cosmic thermodynamics. We start from the total vacuum energy including the negatively valued gravitational binding energy and show that cosmic thermodynamics then requires that the cosmic vacuum energy density can only vary with cosmic scale $R=R(t)$ according to $\\epsilon _\\mathrm{vac}\\sim R^{-\

M. Heyl; H. J. Fahr; M. Siewert

2014-12-09T23:59:59.000Z

415

Thermodynamics of nuclei in thermal contact  

Science Journals Connector (OSTI)

The thermodynamic properties of a dinuclear system are studied with the methods of statistical mechanics. A schematic model calculation shows that the excitation-energy transfer proceeds in energy steps of considerable amount which are subject to large fluctuations. As a consequence, thermal averaging is strong enough to assure the application of thermodynamical methods for describing the energy exchange between the two nuclei in contact. In particular, thermal averaging justifies the definition of a nuclear temperature. The division of excitation energy in thermal equilibrium is derived for several analytical descriptions of the level density.

Karl-Heinz Schmidt and Beatriz Jurado

2011-01-28T23:59:59.000Z

416

Fluctuations and the second law of thermodynamics  

E-Print Network [OSTI]

FLUCTUATIONS AND THE SEL'OND LAW OF THERMODYNAMICS A Thesis by JACK BOAZ DENUR Submitted to the Graduate College of Ter. as ARM Uniuersity in part~a& fulfillment of the reouirement for the degree of MASTER OF SCIENCE August 1976 Major... and the Second Law of Thermodynamics. (August 1976) Jack Boaz Denur, Associate of Science, El Centro Junior College; B. S. , University of Texas at Arlington Chairman of Advisory Committee: R. E. Allen We show that the average fluctuation in the Helmholtz...

Denur, Jack Boaz

2012-06-07T23:59:59.000Z

417

A Low Mach Number Model for Moist Atmospheric Flows  

E-Print Network [OSTI]

We introduce a low Mach number model for moist atmospheric flows that accurately incorporates reversible moist processes in flows whose features of interest occur on advective rather than acoustic time scales. Total water is used as a prognostic variable, so that water vapor and liquid water are diagnostically recovered as needed from an exact Clausius--Clapeyron formula for moist thermodynamics. Unlike the pseudo--incompressible formulation, this model allows a general equation of state. Low Mach number models can be computationally more efficient than a fully compressible model, but the low Mach number formulation introduces additional mathematical and computational complexity because of the divergence constraint imposed on the velocity field. Here, latent heat release is accounted for in the source term of the constraint by estimating the rate of phase change based on the time variation of saturated water vapor subject to the thermodynamic equilibrium constraint. We numerically assess the validity of the l...

Duarte, Max; Bell, John B

2014-01-01T23:59:59.000Z

418

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

419

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

420

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

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

The Thermodynamics Laws from The Law of Stable Equilibrium  

Science Journals Connector (OSTI)

The First and Second Laws of Thermodynamics and the Two Property Rule are derived from the Law of Stable Equilibrium. The treatment is simpler ... Haywood (2). It is aimed at thermodynamics courses for engineerin...

P. H. Brazier

1985-01-01T23:59:59.000Z

422

12.480 Thermodynamics for Geoscientists, Spring 2004  

E-Print Network [OSTI]

Principles of thermodynamics are used to infer the physical conditions of formation and modification of igneous and metamorphic rocks. Includes phase equilibria of homogeneous and heterogeneous systems and thermodynamic ...

Grove, Timothy L.

423

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

424

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

425

Thermodynamic Development of Corrosion Rate Modeling in Iron Phosphate Glasses  

SciTech Connect (OSTI)

A two year research program investigated links between the thermodynamic properties of phosphate glasses and their corrosion rates in different solutions. Glasses in the Na{sub 2}O-CaO-P{sub 2}O{sub 5} and Na{sub 2}O-Fe{sub 2}O{sub 3}-PO{sub 5} systems were prepared and characterized. These glasses and then exposed in bulk and powder form to acid (0.1M HCl), basic (0.1M KOH) and neutral (deionized water) solutions at varying exposure times and temperatures. Analysis of the solution and the glass after exposure determined the rate and type of corrosion that occurred. Simultaneously, efforts were made to determine the thermodynamic properties of solid iron phosphate compounds. This included measurement of low Â?temperature (5Â?300 K) heat capacities, measured at Brigham Young University; the attempted use of a Parr calorimeter to measure ambient Â?temperature enthalpies of formation; and attempted measurement of Â?temperature heat capacities. Only the first of the three tasks was successfully accomplished. In lieu of experimental measurement of enthalpies of formation, first-principles calculation of enthalpies of formation was performed at Missouri S&T; these results will be used in subsequent modeling efforts.

Mark Schlesinger; John Vienna; Jim Bresee; Richard Brow

2011-10-31T23:59:59.000Z

426

Research Highlight  

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

Cloud Susceptibility Measures Potential Cloud Sensitivity to First Aerosol Cloud Susceptibility Measures Potential Cloud Sensitivity to First Aerosol Indirect Effect Download a printable PDF Submitter: Oreopoulos, L., NASA Platnick, S., NASA - Goddard Space Flight Center Area of Research: Cloud Distributions/Characterizations Working Group(s): Radiative Processes Journal Reference: Platnick, S, and L Oreopoulos. 2008. "Radiative susceptibility of cloudy atmospheres to droplet number perturbations: 1. Theoretical analysis and examples from MODIS." Journal of Geophysical Research doi:10.1029/2007JD009654, in press. Oreopoulos, L., and S. Platnick. 2008. Radiative susceptibility of cloudy atmospheres to droplet number perturbations: 2. Global analysis from MODIS, J. Geophys. Res., doi:10.1029/2007JD009655, in press. Theoretical calculations with a shortwave broadband radiative transfer

427

Research Highlight  

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

Estimating Fractional Sky Cover from Spectral Measurements Estimating Fractional Sky Cover from Spectral Measurements Download a printable PDF Submitter: Long, C. N., Pacific Northwest National Laboratory Min, Q., State University of New York, Albany Wang, T., State University of New York, Albany Duan, M., Institute of Atmospheric Physics/Chinese Academy of Science Area of Research: Cloud Distributions/Characterizations Working Group(s): Radiative Processes Journal Reference: Min Q, T Wang, CN Long, and M Duan. 2008. "Estimating fractional sky cover from spectral measurements." Journal of Geophysical Research - Atmospheres, 113, D20208, doi:10.1029/2008JD010278. Retrieved and observed cloud fractions and corresponding TSI cloud imagers on 8 July 2005 at Pt. Reyes. Scatterplot of retrieved cloud fraction from spectral ratio method and SW

428

Research Highlight  

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

The Surprisingly Large Contribution of Small Marine Clouds to Cloud The Surprisingly Large Contribution of Small Marine Clouds to Cloud Fraction and Reflectance Download a printable PDF Submitter: Oreopoulos, L., NASA Feingold, G., NOAA - Earth System Research Laboratory Koren, I., Weizmann Institute of Science Remer, L., NASA - GSFC, Laboratory for Atmospheres Area of Research: Clouds with Low Optical [Water] Depths (CLOWD) Working Group(s): Cloud Properties Journal Reference: Koren, I, L Oreopoulos, G Feingold, LA Remer, and O Altaratz. 2008. "How small is a small cloud?" Atmospheric Chemistry and Physics Journal, in press Cloud mask for a sparse cumulus cloud field as inferred by using the same threshold at four different spatial resolutions. The upper-left panel is for the original Landsat resolution and the lower-right panel is for a

429

Research Highlight  

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

ARM Science Applications of AERI Measurements ARM Science Applications of AERI Measurements Submitter: Smith, W. L., NASA - Langley Research Center Area of Research: Radiation Processes Working Group(s): Cloud Modeling Journal Reference: DeSlover, D. H. 1996. Analysis of Visible and Infrared Cirrus Cloud Optical Properties Using High Spectral Resolution Remote Sensing, M.S. Thesis, University of Wisconsin - Madison. Ho, S.-P. 1997. Atmospheric Profiles From Simultaneous Observations of Upwelling and Downwelling Spectral Radiance, Ph.D. Thesis, University of Wisconsin - Madison. Knuteson, R. O., F. A. Best, H. B. Howell, P. Minnett, H. E. Revercomb, W. L. Smith. 1997. "High Spectral Resolution Infrared Observations at the Ocean-Atmosphere Interface in the Tropical Western Pacific using a Marine

430

Research Highlight  

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

TOA Radiation Budget of Convective Core/Stratiform Rain/Anvil Clouds from TOA Radiation Budget of Convective Core/Stratiform Rain/Anvil Clouds from Deep Convection Download a printable PDF Submitter: Feng, Z., Pacific Northwest National Laboratory Dong, X., University of North Dakota Area of Research: Cloud Distributions/Characterizations Working Group(s): Cloud Life Cycle Journal Reference: Feng Z, XQ Dong, BK Xi, C Schumacher, P Minnis, and M Khaiyer. 2011. "Top-of-atmosphere radiation budget of convective core/stratiform rain and anvil clouds from deep convective systems." Journal of Geophysical Research - Atmospheres, 116, D23202, doi:10.1029/2011JD016451. An example of the hybrid classification process. (a) GOES IR temperature, (b) NEXRAD radar reflectivity at 2.5 km MSL, (c) cloud patch segmentation from GOES IR temperature (the color patches are identified as deep

431

The Influence of Chemi-ionization and Recombination Processes on Spectral Line Shapes in Stellar Atmospheres  

E-Print Network [OSTI]

In this work, the chemi-ionization processes in atom- Rydberg atom collisions, as well as the corresponding chemi-recombination processes are considered as factors of influence on the atom exited-state populations in weakly ionized layers of stellar atmospheres. The presented results are related to the photospheres of the Sun and some M red dwarfs as well as weakly ionized layers of DB white dwarfs atmospheres. It has been found that the mentioned chemi ionization/recombination processes dominate over the relevant concurrent electron-atom and electron-ion ionization and recombination process in all parts of considered stellar atmospheres. The obtained results demonstrate the fact that the considered chemi ionization/recombination processes must have a very significant influence on the optical properties of the stellar atmospheres. Thus, it is shown that these processes and their importance for non-local thermodynamic equilibrium (non-LTE) modeling of the solar atmospheres should be investigated further.

Mihajlov, Anatolij A; Sreckovic, Vladimir A; Dimitrijevic, Milan S

2011-01-01T23:59:59.000Z

432

A thermodynamic motivation for dark energy  

E-Print Network [OSTI]

It is argued that the discovery of cosmic acceleration could have been anticipated on thermodynamic grounds, namely, the generalized second law and the approach to equilibrium at large scale factor. Therefore, the existence of dark energy -or equivalently, some modified gravity theory- should have been expected. In general, cosmological models that satisfy the above criteria show compatibility with observational data.

Ninfa Radicella; Diego Pavón

2010-12-02T23:59:59.000Z

433

Thermodynamical identities---a systematic approach  

E-Print Network [OSTI]

We present a systematic approach to thermodynamical identities and illustrate the power of these methods by displaying Mathematica notebooks to deal with a large variety of such identities. In concrete examples these can involve rather tedious, not to way impossible, computations when done by hand.

J. B. Cooper

2011-08-24T23:59:59.000Z

434

Non-equilibrium thermodynamics of gravitational screens  

E-Print Network [OSTI]

We study the Einstein gravity equations projected on a timelike surface, which represents the time evolution of what we call a gravitational screen. We show that such a screen possesses a surface tension and an internal energy, and that the Einstein equations reduce to the thermodynamic equations of a viscous bubble. We also provide a complete dictionary between gravitational and thermodynamical variables. In the non-viscous cases there are three thermodynamic equations which characterise a bubble dynamics: These are the first law, the Marangoni flow equation and the Young-Laplace equation. In all three equations the surface tension plays a central role: In the first law it appears as a work term per unit area, in the Marangoni flow its gradient drives a force, and in the Young-Laplace equation it contributes to a pressure proportional to the surface curvature. The gravity equations appear as a natural generalization of these bubble equations when the bubble itself is viscous and dynamical. In particular, it shows that the mechanism of entropy production for the viscous bubble is mapped onto the production of gravitational waves. We also review the relationship between surface tension and temperature, and discuss the usual black-hole thermodynamics from this point of view.

Laurent Freidel; Yuki Yokokura

2014-05-19T23:59:59.000Z

435

Thermodynamics Teacher and Student Guides (6 Activities)  

Broader source: Energy.gov [DOE]

This is a hands-on laboratory unit exploring the concepts of heat and movement. Teachers set up six laboratory stations that will introduce students to the basic concepts of thermodynamics, including atomic structure, atomic and molecular motion, states of matter, heat transfer, thermal expansion, specific heat, and heats of fusion and vaporization. It also includes a unit exam and teacher demonstrations.

436

Thermodynamics of Energy Production from Biomass  

E-Print Network [OSTI]

Thermodynamics of Energy Production from Biomass Tad W. Patzek 1 and David Pimentel 2 1 Department #12;3 Biomass from Tropical Tree Plantations 14 3.1 Scope of the Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2 Environmental Impacts of Industrial Biomass Production . . . . . . . . . . . . . . . 16 3

Patzek, Tadeusz W.

437

Optimal distillation using thermodynamic geometry Bjarne Andresen  

E-Print Network [OSTI]

Optimal distillation using thermodynamic geometry Bjarne Andresen Ă?rsted Laboratory, University of a distillation column may be improved by permitting heat exchange on every tray rather than only in the reboiler (temperature, pressure, etc.) define successive states in a sequence of equilibria. Fractional distillation [2

Salamon, Peter

438

First law of black Saturn thermodynamics  

SciTech Connect (OSTI)

The physical process version and equilibrium state version of the first law of thermodynamics for a black object consisting of n-dimensional charged stationary axisymmetric black hole surrounded by a black rings, the so-called black Saturn, was derived. The general setting for our derivations is n-dimensional dilaton gravity with p+1 strength form fields.

Rogatko, Marek [Institute of Physics Maria Curie-Sklodowska University 20-031 Lublin, pl. Marii Curie-Sklodowskiej 1 (Poland)

2007-06-15T23:59:59.000Z

439

First law of black Saturn thermodynamics  

Science Journals Connector (OSTI)

The physical process version and equilibrium state version of the first law of thermodynamics for a black object consisting of n-dimensional charged stationary axisymmetric black hole surrounded by a black rings, the so-called black Saturn, was derived. The general setting for our derivations is n-dimensional dilaton gravity with p+1 strength form fields.

Marek Rogatko

2007-06-20T23:59:59.000Z

440

First law of p-brane thermodynamics  

SciTech Connect (OSTI)

We study the physical process version and the equilibrium state version of the first law of thermodynamics for a charged p-brane. The general setting for our investigations is (n+p+1)-dimensional Einstein dilaton gravity with (p+2) strength form fields.

Rogatko, Marek [Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, pl. Marii Curie-Sklodowskiej 1 (Poland)

2009-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

First law of p-brane thermodynamics  

Science Journals Connector (OSTI)

We study the physical process version and the equilibrium state version of the first law of thermodynamics for a charged p-brane. The general setting for our investigations is (n+p+1)-dimensional Einstein dilaton gravity with (p+2) strength form fields.

Marek Rogatko

2009-08-31T23:59:59.000Z

442

QCD thermodynamics with dynamical overlap fermions  

E-Print Network [OSTI]

We study QCD thermodynamics using two flavors of dynamical overlap fermions with quark masses corresponding to a pion mass of 350 MeV. We determine several observables on N_t=6 and 8 lattices. All our runs are performed with fixed global topology. Our results are compared with staggered ones and a nice agreement is found.

S. Borsanyi; Y. Delgado; S. Durr; Z. Fodor; S. D. Katz; S. Krieg; T. Lippert; D. Nogradi; K. K. Szabo

2012-04-18T23:59:59.000Z

443

Thermodynamics of nuclei in thermal contact  

E-Print Network [OSTI]

The behaviour of a di-nuclear system in the regime of strong pairing correlations is studied with the methods of statistical mechanics. It is shown that the thermal averaging is strong enough to assure the application of thermodynamical methods to the energy exchange between the two nuclei in contact. In particular, thermal averaging justifies the definition of a nuclear temperature.

Karl-Heinz Schmidt; Beatriz Jurado

2010-10-05T23:59:59.000Z

444

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

445

A modified LandauDevonshire thermodynamic potential for strontium titanate  

E-Print Network [OSTI]

A modified Landau­Devonshire thermodynamic potential for strontium titanate G. Sheng, Y. L. Li, J Landau­Devonshire thermodynamic potential for strontium titanate G. Sheng,1,a Y. L. Li,2 J. X. Zhang,1,b of the Landau energy coefficients and report a modified thermodynamic potential for bulk strontium titanate

Chen, Long-Qing

446

SYMPOSIUM ON: THE SECOND LAW OF THERMODYNAMICS: STATUS AND CHALLENGES  

E-Print Network [OSTI]

1 SYMPOSIUM ON: THE SECOND LAW OF THERMODYNAMICS: STATUS AND CHALLENGES THE 92ND ANNUAL MEETING efforts at clarification, including this one. The Laws of Thermodynamics have much wider, including, Second Law of Thermodynamics. PACS: 05.90.+m #12;2 INTRODUCTION AND BACKGROUND: Reasoning Open Issues

Kostic, Milivoje M.

447

THE FIRST LAW OF THERMODYNAMICS35116 FIGURE 3-46  

E-Print Network [OSTI]

lIb THE FIRST LAW OF THERMODYNAMICS3·5116 FIGURE 3-46 Energy cannot be created or destroyed; it can. The first law of thermodynamics, also known as the conservation of energy principle, provides a sound basis observa- tions, the first law of thermodynamics states that energy can be neither created nor destroyed

Kammen, Daniel M.

448

Artificial Life, The Second Law of Thermodynamics, and Kolmogorov Complexity  

E-Print Network [OSTI]

Artificial Life, The Second Law of Thermodynamics, and Kolmogorov Complexity John R. Woodward, Amin parasitic behavior. The second law of thermodynamics states that the entropy of an isolated system. In section III we examine entropy and the second law of thermodynamics. In section IV we examine

Woodward, John

449

THE SECOND LAW OF NONEQUILIBRIUM THERMODYNAMICS: HOW FAST TIME FLIES  

E-Print Network [OSTI]

THE SECOND LAW OF NONEQUILIBRIUM THERMODYNAMICS: HOW FAST TIME FLIES PHIL ATTARD School References I. INTRODUCTION The Second Law of Equilibrium Thermodynamics may be stated: The entropy increases for nonequilibrium thermodynamics and statistical mechanics based on such a law written in a form analogous

Attard, Phil

450

Thermodynamics and Structure of Peptide-Aggregates at Membrane Surfaces  

E-Print Network [OSTI]

Thermodynamics and Structure of Peptide- Aggregates at Membrane Surfaces INAUGURALDISSERTATION zur. Introduction 01 1.1 ­ Thermodynamics of Protein Aggregation 01 1.2 ­ Formation of Protein Aggregates 03 1 and P-glycoprotein: Connecting Thermodynamics and Membrane Structure with Functional Activity 23 3

Quake, Stephen R.

451

Concept of time in the general law of thermodynamics as the basis of the thermodynamics of the nonequilibrium state  

Science Journals Connector (OSTI)

A mathematical formulation is proposed for the general law of thermodynamics in the form of relations defining the...(n))=0 associates the thermodynamic time and the potential ? of the nonequilibrium state. Parti...

V. N. Maslov

1989-08-01T23:59:59.000Z

452

Thermodynamics of resonances and blurred particles  

E-Print Network [OSTI]

Exact and approximate expressions for thermodynamic characteristics of heated matter, which consists of particles with finite mass-widths, are constructed. They are expressed in terms of Fermi/Bose distributions and spectral functions, rather than in terms of more complicated combinations between real and imaginary parts of the self-energies of different particle species. Therefore thermodynamically consistent approximate treatment of systems of particles with finite mass-widths can be performed, provided spectral functions of particle species are known. Approximation of the free resonance gas at low densities is studied. Simple ansatz for the energy dependence of the spectral function is suggested that allows to fulfill thermodynamical consistency conditions. On examples it is shown that a simple description of dense systems of interacting particle species can be constructed, provided some species can be treated in the quasiparticle approximation and others as particles with widths. The interaction affects quasiparticle contributions, whereas particles with widths can be treated as free. Example is considered of a hot gas of heavy fermions strongly interacting with light bosons, both species with zero chemical potentials. The density of blurred fermions is dramatically increased for high temperatures compared to the standard Boltzmann value. The system consists of boson quasiparticles (with effective masses) interacting with fermion -- antifermion blurs. In thermodynamical values interaction terms partially compensate each other. Thereby, in case of a very strong coupling between species thermodynamical quantities of the system, like the energy, pressure and entropy, prove to be such as for the quasi-ideal gas mixture of quasi-free fermion blurs and quasi-free bosons.

D. N. Voskresensky

2008-04-10T23:59:59.000Z

453

Atmospheric Mercury Deposition during the Last 270 Years: A  

E-Print Network [OSTI]

Atmospheric Mercury Deposition during the Last 270 Years: A Glacial Ice Core Record of Natural, and U.S. Geological Survey, Wisconsin District Mercury Research Laboratory, Middleton, Wisconsin 53562 Mercury (Hg) contamination of aquatic ecosystems and subsequent methylmercury bioaccumulation

454

Dental Applications of Atmospheric-Pressure Non-Thermal Plasmas  

Science Journals Connector (OSTI)

This chapter presents a summary of selected recent research efforts devoted to the use of low-temperature (or non-thermal) atmospheric-pressure plasmas in various dental applications. Areas of application ... fun...

WeiDong Zhu; Kurt Becker; Jie Pan; Jue Zhang; Jing Fang

2014-01-01T23:59:59.000Z

455

A U. S. Department of Energy User Facility Atmospheric Radiation  

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

Program DOESC-ARMP-07-003 Science and Research Data Products Climate Data for the World A primary objective of the U.S. Department of Energy's Atmospheric Radiation...

456

Enhancing RFID label production with atmospheric plasma treatment  

Science Journals Connector (OSTI)

RFID research and development requires technical expertise of ink and adhesive manufacturers, surface treatment and printing equipment manufacturers, package printers, and electronics firms. In this framework, a strong enhancement in production and quality ... Keywords: RFID labels, atmospheric plasma, labels, logistics

R. A. Wolf; A. Sparavigna; B. Montrucchio

2006-07-01T23:59:59.000Z

457

The Energy Budget of the Polar Atmosphere in MERRA  

Science Journals Connector (OSTI)

Components of the atmospheric energy budget from the Modern-Era Retrospective Analysis for Research and Applications (MERRA) are evaluated in polar regions for the period 1979–2005 and compared with previous estimates, in situ observations, and ...

Richard I. Cullather; Michael G. Bosilovich

2012-01-01T23:59:59.000Z

458

Thermodynamic Prediction of Compositional Phases Confirmed by Transmission Electron Microscopy on Tantalum-Based Alloy Weldments  

SciTech Connect (OSTI)

Tantalum alloys have been used by the U.S. Department of Energy as structural alloys for radioisotope based thermal to electrical power systems since the 1960s. Tantalum alloys are attractive for high temperature structural applications due to their high melting point, excellent formability, good thermal conductivity, good ductility (even at low temperatures), corrosion resistance, and weldability. Tantalum alloys have demonstrated sufficient high-temperature toughness to survive prolonged exposure to the radioisotope power-system working environment. Typically, the fabrication of power systems requires the welding of various components including the structural members made of tantalum alloys. Issues such as thermodynamics, lattice structure, weld pool dynamics, material purity and contamination, and welding atmosphere purity all potentially confound the understanding of the differences between the weldment properties of the different tantalum-based alloys. The objective of this paper is to outline the thermodynamically favorable material phases in tantalum alloys, with and without small amounts of hafnium, during and following solidification, based on the results derived from the FactSage(c) Integrated Thermodynamic Databank. In addition, Transition Electron Microscopy (TEM) data will show for the first time, the changes occurring in the HfC before and after welding, and the data will elucidate the role HfC plays in pinning grain boundaries.

Moddeman, William E.; Birkbeck, Janine C. [BWXT Pantex, Amarillo, Texas 79120-0020 (United States); Barklay, Chadwick D.; Kramer, Daniel P. [University of Dayton Research Institute, Dayton OH 45469-0102 (United States); Miller, Roger G.; Allard, Lawrence F. [Oak Ridge National Laboratory, Oak Ridge, TN 37831-6064 (United States)

2007-01-30T23:59:59.000Z

459

ARM Climate Research Facility  

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

banner banner Home | People | Site Index Atmospheric Radiation Measurement Climate Research Facility US Department of Energy About Science Campaigns Sites Instruments Measurements Data News Publications Education Become a User Recovery Act Mission FAQ Outreach Displays History Organization Participants Facility Statistics Forms Contacts Research Themes Research Highlights Journal Articles Collaborations Atmospheric System Research (ASR) ARM Science Team Meetings Propose a Campaign Submitting Proposals: Guidelines Featured Campaigns Campaign Data List of Campaigns Aerial Facility Eastern North Atlantic Mobile Facilities North Slope of Alaska Southern Great Plains Tropical Western Pacific Location Table Contacts Instrument Datastreams Value-Added Products PI Data Products Field Campaign Data Related Data

460

E-Print Network 3.0 - atmospheric administration national Sample...  

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

national Page: << < 1 2 3 4 5 > >> 1 Madelyn Appelbaum Senior Communications Policy Advisor Summary: Communications Director Office of Oceanic & Atmospheric Research National...

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

E-Print Network 3.0 - atmospheric stability impacts Sample Search...  

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 Source: European Centre for Research and Advanced...

462

E-Print Network 3.0 - atmospheric stability conditions 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 Source: European Centre for Research and Advanced...

463

E-Print Network 3.0 - atmosphere amap-nuuk west Sample Search...  

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

in the Atmosphere AMAP- Nuuk, Westgreenland 2002-2004 NERI Technical Report, No. 547 12;Tom side 12;National... Environmental Research Institute Ministry of the Environment...

464

E-Print Network 3.0 - atmospheric multiple scattering Sample...  

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

in planetary atmospheres. Part II. Sunlight... , so the absorption lines in reflected solar light ... Source: Fridlind, Ann - Earth Science Division, NASA Ames Research Center...

465

E-Print Network 3.0 - atmosphere radiation budget Sample Search...  

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

in the solar constant albedo Changes in atmospheric infrared opacity The "greenhouse effect" Time constants Source: Sherwood, Steven - Climate Change Research Centre,...

466

Research Highlight  

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

ARM Program Achieves Milestone in Global Cloud Properties Research ARM Program Achieves Milestone in Global Cloud Properties Research Submitter: Revercomb, H. E., University of Wisconsin, Madison Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: Knuteson, R.O., Best, F.A., Dedecker, R.G., Feltz, W.F., Revercomb, H.E., and Tobin, D.C., 2004: "10 Years of AERI Data from the DOE ARM Southern Great Plains Site," In Proceedings from the Fourteenth ARM Science Team Meeting, U.S. Department of Energy,Washington, D.C. Figure 1 Figure 2 From the unassuming farmlands of north-central Oklahoma comes a milestone for the global climate research community. March 2004 marked the 10-year anniversary for an instrument that now holds the prestigious distinction of providing the longest set of continuous atmospheric interferometer data

467

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

468

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

469

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

470

Thermodynamics in the Viscous Early Universe  

E-Print Network [OSTI]

Assuming that the matter filling the background geometry in the Early Universe was a free gas and no phase transitions took place, we discuss the thermodynamics of this closed system using classical approaches. We found that essential cosmological quantities, such as the Hubble parameter $H$, the scaling factor $a$ and the curvature parameter $k$, can be derived from this simple model. The results are compatible with the Friedmann-Robertson-Walker model and Einstein field equations. Including finite bulk viscosity coefficient leads to important changes in the cosmological quantities. Accordingly, our picture about evolution of the Universe and its astrophysical consequences seems to be a subject of radical revision. We found that $k$ strongly depends on thermodynamics of the cosmic background matter. The time scale, at which negative curvature might take place, depends on the relation between the matter content and the total energy. Using quantum and statistical approaches, we introduced expressions for $H$ a...

Tawfik, A

2010-01-01T23:59:59.000Z

471

Thermodynamics of Lovelock-Lifshitz black branes  

SciTech Connect (OSTI)

We investigate the thermodynamics of Lovelock-Lifshitz black branes. We begin by introducing the finite action of third order Lovelock gravity in the presence of a massive vector field for a flat boundary, and use it to compute the energy density of these black branes. Using the field equations, we find a conserved quantity along the r coordinate that relates the metric parameters at the horizon and at infinity. Remarkably, though the subleading large-r behavior of Lovelock-Lifshitz black branes differs substantively from their Einsteinian Lifshitz counterparts, we find that the relationship between the energy density, temperature, and entropy density is unchanged from Einsteinian gravity. Using the first law of thermodynamics to obtain the relationship between entropy and temperature, we find that it too is the same as the Einsteinian case, apart from a constant of integration that depends on the Lovelock coefficients.

Dehghani, M. H. [Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1 (Canada); Physics Department and Biruni Observatory, College of Sciences, Shiraz University, Shiraz 71454 (Iran, Islamic Republic of); Mann, R. B. [Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1 (Canada)

2010-09-15T23:59:59.000Z

472

Thermodynamics of free Domain Wall fermions  

E-Print Network [OSTI]

Studying various thermodynamic quantities for the free domain wall fermions for both finite and infinite fifth dimensional extent N_5, we find that the lattice corrections are minimum for $N_T\\geq10$ for both energy density and susceptibility, for its irrelevant parameter M in the range 1.45-1.50. The correction terms are, however, quite large for small lattice sizes of $N_T\\leq8$. We propose modifications of the domain wall operator, as well as the overlap operator, to reduce the finite cut-off effects to within 10% of the continuum results of the thermodynamic quantities for the currently used N_T=6-8 lattices. Incorporating chemical potential, we show that \\mu^2 divergences are absent for a large class of such domain wall fermion actions although the chiral symmetry is broken for $\\mu\

R. V. Gavai; Sayantan Sharma

2008-11-19T23:59:59.000Z

473

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

474

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

475

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

476

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

477

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

478

Research Highlight  

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

Unique Properties of the Arctic Stratiform Cloud-Top Region Unique Properties of the Arctic Stratiform Cloud-Top Region Submitter: Shupe, M., University of Colorado Area of Research: Cloud Processes Working Group(s): Cloud Life Cycle Journal Reference: Sedlar J, MD Shupe, and M Tjernström. 2011. "On the relationship between thermodynamic structure and cloud top, and its climate significance in the Arctic." Journal of Climate, 25(7), doi:10.1175/JCLI-D-11-00186.1. Occurrence frequency of low-level, stratiform cloud cases used in the analysis (black), percentage of these cases where the cloud top was identified to occur within the inversion (CII, gray), and percentage where the cloud top was observed to be capped by the inversion (CCI, white) for the ASCOS, SHEBA, and Barrow locations. The total number of cases analyzed

479

Iodide accumulation provides kelp with an inorganic antioxidant impacting atmospheric chemistry  

Science Journals Connector (OSTI)

...stress and links to atmospheric new particle production . Environ...National Oceanic and Atmospheric Administration...antioxidant impacting atmospheric chemistry...Research Support, Non-U.S. Gov't...TurboMatrix Automated Thermal Desorption...4) to remove plasma. Hereafter, blood...

Frithjof C. Küpper; Lucy J. Carpenter; Gordon B. McFiggans; Carl J. Palmer; Tim J. Waite; Eva-Maria Boneberg; Sonja Woitsch; Markus Weiller; Rafael Abela; Daniel Grolimund; Philippe Potin; Alison Butler; George W. Luther III; Peter M. H. Kroneck; Wolfram Meyer-Klaucke; Martin C. Feiters

2008-01-01T23:59:59.000Z

480

A white paper on Effects of Anthropogenic Pollution on the Atmospheric  

E-Print Network [OSTI]

1 A white paper on Effects of Anthropogenic Pollution on the Atmospheric Chemistry of the Tropical Brazilian Partner Organizations National Institute for Amazonian Research (INPA)1 The Large-Scale Biosphere-Atmosphere by the atmospheric oxidation of trace gases to low volatility compounds (Chen et al. 2009). These products can

Note: This page contains sample records for the topic "research atmospheric thermodynamics" 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

Heterophase liquid states: Thermodynamics, structure, dynamics  

E-Print Network [OSTI]

An overview of theoretical results and experimental data on the thermodynamics, structure and dynamics of the heterophase glass-forming liquids is presented. The theoretical approach is based on the mesoscopic heterophase fluctuations model (HPFM) developed within the framework of the bounded partition function approach. The Fischer cluster phenomenon, glass transition, liquid-liquid transformations, parametric phase diagram, cooperative dynamics and fragility of the glass-forming liquids is considered.

A. S. Bakai

2015-01-12T23:59:59.000Z

482

Laws of thermodynamics and game theory  

E-Print Network [OSTI]

Using a game theory approach and a new extremal problem, Gibbs formula is proved in a most simple and general way for the classical mechanics case. A corresponding conjecture on the asymptotics of the classical entropy is formulated. For the ordinary quantum mechanics case, the third law of thermodynamics is derived. Some results on the number of ground states and residual entropy are obtained rigorously.

Lev Sakhnovich

2011-05-23T23:59:59.000Z

483

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

484

UNIVERSITY CORPORATION FOR ATMOSPHERIC RESEARCH NATIONAL CENTER FOR ATMOSPHERIC RESEARCH UCAR Community Programs  

E-Print Network [OSTI]

Community Programs PO Box 3000, Boulder, CO 80307-3000 RICHARD A. ANTHES UCAR President 303 497-1652 ANTHES communities in Missouri and Alabama, and record flooding along the Mississippi watershed inundated farms to weather and climate events such as hurricanes, tornadoes, forest fires, flooding, heavy snows, and drought

485

Quantum dynamics in the thermodynamic limit  

SciTech Connect (OSTI)

The description of spontaneous symmetry breaking that underlies the connection between classically ordered objects in the thermodynamic limit and their individual quantum-mechanical building blocks is one of the cornerstones of modern condensed-matter theory and has found applications in many different areas of physics. The theory of spontaneous symmetry breaking, however, is inherently an equilibrium theory, which does not address the dynamics of quantum systems in the thermodynamic limit. Here, we will use the example of a particular antiferromagnetic model system to show that the presence of a so-called thin spectrum of collective excitations with vanishing energy - one of the well-known characteristic properties shared by all symmetry-breaking objects - can allow these objects to also spontaneously break time-translation symmetry in the thermodynamic limit. As a result, that limit is found to be able, not only to reduce quantum-mechanical equilibrium averages to their classical counterparts, but also to turn individual-state quantum dynamics into classical physics. In the process, we find that the dynamical description of spontaneous symmetry breaking can also be used to shed some light on the possible origins of Born's rule. We conclude by describing an experiment on a condensate of exciton polaritons which could potentially be used to experimentally test the proposed mechanism.

Wezel, Jasper van [Theory of Condensed Matter, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE (United Kingdom)

2008-08-01T23:59:59.000Z

486

Thermodynamic modeling for organic solid precipitation  

SciTech Connect (OSTI)

A generalized predictive model which is based on thermodynamic principle for solid-liquid phase equilibrium has been developed for organic solid precipitation. The model takes into account the effects of temperature, composition, and activity coefficient on the solubility of wax and asphaltenes in organic solutions. The solid-liquid equilibrium K-value is expressed as a function of the heat of melting, melting point temperature, solubility parameter, and the molar volume of each component in the solution. All these parameters have been correlated with molecular weight. Thus, the model can be applied to crude oil systems. The model has been tested with experimental data for wax formation and asphaltene precipitation. The predicted wax appearance temperature is very close to the measured temperature. The model not only can match the measured asphaltene solubility data but also can be used to predict the solubility of asphaltene in organic solvents or crude oils. The model assumes that asphaltenes are dissolved in oil in a true liquid state, not in colloidal suspension, and the precipitation-dissolution process is reversible by changing thermodynamic conditions. The model is thermodynamically consistent and has no ambiguous assumptions.

Chung, T.H.

1992-12-01T23:59:59.000Z

487

Thermodynamics of a nonionic sponge phase  

Science Journals Connector (OSTI)

Different suggestions for the mechanism governing the narrow stability of the L3 (sponge) phase have led to a series of debates in recent years. There have been several models developed to describe such a mechanism via thermodynamics. To date, experimental data are insufficient to test present theories. In this study, we revisit the sponge phase with two series of thermodynamic data performed on the well-characterized C12E5–n-decane–H2O system. These thermodynamic data sets stem from phase equilibrium and static light scattering experiments designed to link system-specific parameters such as the temperature dependence of the spontaneous curvature Ho and the two bending moduli ? and ?Ż, which have only been loosely connected in earlier experiments. The use of a well-characterized system is important in that it allows usage of molecular descriptors from earlier studies to reduce fit parameters. Another advantage for using this system is that its phase behavior is analogous to a two-component system which, from an experimental standpoint, is more practical to perform accurate measurements and, from a theoretical standpoint, more simple to model. In the present investigation, we use these tools to quantitatively test parameters obtained by different experimental techniques and assumptions inherited in theoretical models designed to interpret them.

T. D. Le; U. Olsson; H. Wennerström; P. Schurtenberger

1999-10-01T23:59:59.000Z

488

Wax phase equilibria: developing a thermodynamic model using a systematic approach  

Science Journals Connector (OSTI)

Reservoir hydrocarbon fluids contain heavy paraffins that may form solid phases of wax at low temperatures. Problems associated with wax formation and deposition are a major concern in production and transportation of hydrocarbon fluids. The industry has directed considerable efforts towards generating reliable experimental data and developing thermodynamic models for estimating the wax phase boundary. The cloud point temperature, i.e. the wax appearance temperature (WAT) is commonly measured in laboratories and traditionally used in developing and/or validating wax models. However, the WAT is not necessarily an equilibrium point, and its value can depend on experimental procedures. Furthermore, when determining the wax phase boundary at pipeline conditions, the common practice is to measure the wax phase boundary at atmospheric pressure, then apply the results to real pipeline pressure conditions. However, neglecting the effect of pressure and associated fluid thermophysical/compositional changes can lead to unreliable results. In this paper, a new thermodynamic model for wax is proposed and validated against wax disappearance temperature (WDT) data for a number of binary and multi-component systems. The required thermodynamic properties of pure n-paraffins are first estimated, and then a new approach for describing wax solids, based on the UNIQUAC equation, is described. Finally, the impact of pressure on wax phase equilibria is addressed. The newly developed model demonstrates good reliability for describing solids behaviour in hydrocarbon systems. Furthermore, the model is capable of predicting the amount of wax precipitated and its composition. The predictions compare well with independent experimental data, demonstrating the reliability of the thermodynamic approach.

Hong-Yan Ji; Bahman Tohidi; Ali Danesh; Adrian C Todd

2004-01-01T23:59:59.000Z

489

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 Oxygen detected in atmosphere of Saturn's moon Dione Scientists and an international research team have announced discovery of molecular oxygen ions in the upper-most atmosphere of Dione. March 3, 2012 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

490

Pascal MARQUET ICPEF. Research scientist at Mto-France. Birth date : 30th of April 1960. CNRM-GAME/GMAP/PROC  

E-Print Network [OSTI]

of the concept of Exergy to atmospheric energetics. The concepts of dry-air and moist-air Available Enthalpy models. 2) Study of moist-air thermodynamics (entropy, enthalpy). 3) Applications of Exergy

Ribes, Aurélien

491

Thermodynamic Branch in the Chemical System Response to External Impact  

E-Print Network [OSTI]

The paper gives an account of a detailed investigation of the thermodynamic branch as a path of the chemical system deviation from its isolated thermodynamic equilibrium under an external impact. For a combination of direct and reverse reactions in the same chemical system, full thermodynamic branch is presented by an S-shaped curve, whose ends asymptotically achieve appropriate initial states, which, in turn, are logistic ends of the opposite reactions. The slope tangents of the steepest parts of the curves, the areas of the maximum rate of the shift growth vs. the external thermodynamic force, occurred to be directly proportional to the force and, simultaneously, linearly proportional to the thermodynamic equivalent of chemical reaction, which is the ratio between the amount in moles of any reaction participant, transformed in an isolated system, along the reaction way from its initial state to thermodynamic equilibrium, to its stoichiometric coefficient. The found linearity is valid for arbitrary combination of the stoichiometric coefficients in a reaction of compound synthesis from chemical elements like aA+bB=AaBb, and confirms the exclusive role of the thermodynamic equivalent of transformation as the chemical system characteristic of robustness and irreversibility. Results of this work allow for quantitative evaluation of the chemical system shift from thermodynamic equilibrium along thermodynamic branch and its rate vs. the shifting force. Such an investigation became possible due to the development of discrete thermodynamics of chemical equilibria.

B. Zilbergleyt

2012-03-20T23:59:59.000Z

492

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

493

in Parallel Supercomputing in Atmospheric Science, eds. GR. Hoff man and T. Kauranne, World Scientific, 1993, 500--513.  

E-Print Network [OSTI]

for Atmospheric Research 3 Abstract This paper is a brief overview of a parallel version of the NCAR Community, Office of Energy Research, U.S. Department of Energy under contract DE­AC05­84OR21400 with Martin Marietta Energy Systems Inc. 2 This research was supported by the Atmospheric and Climate Research Division

494

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.

495

Research Highlight  

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

More Like Shades of Gray: the Effects of Black Carbon in Aerosols More Like Shades of Gray: the Effects of Black Carbon in Aerosols Submitter: McComiskey, A. C., National Oceanic and Atmospheric Administration Area of Research: Aerosol Properties Working Group(s): Aerosol Life Cycle Journal Reference: Cappa CD, TB Onasch, P Massoli, DR Worsnop, TS Bates, ES Cross, P Davidovits, J Hakala, KL Hayden, BT Jobson, KR Kolesar, DA Lack, BM Lerner, SM Li, D Mellon, I Nuaaman, JS Olfert, T Petaja, PK Quinn, C Song, R Subramanian, EJ Williams, and RA Zaveri. 2012. "Radiative absorption enhancements due to the mixing state of atmospheric black carbon." Science, 337(6098), doi:10.1126/science.1223447. Black to the core: Scientists are combining field and laboratory measurements to understand more about the physical properties of aerosols

496

Research Highlight  

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

New Method Simulates 3D Ice Crystal Growth Within Clouds New Method Simulates 3D Ice Crystal Growth Within Clouds Submitter: Bhattacharya, A., Pacific Northwest National Laboratory Area of Research: Radiation Processes Working Group(s): Cloud Life Cycle Journal Reference: Harrington JY, K Sulia, and H Morrison. 2013. "A method for adaptive habit prediction in bulk microphysical models. Part I: theoretical development." Journal of the Atmospheric Sciences, 70(2), doi:10.1175/JAS-D-12-040.1. Harrington JY, K Sulia, and H Morrison. 2013. "A method for adaptive habit prediction in bulk microphysical models. Part II: parcel model corroboration." Journal of the Atmospheric Sciences, 70(2), doi:10.1175/JAS-D-12-0152.1. A close-up of ice crystals. Ever noticed the different shapes of snowflakes sticking on the windowpane

497

Research Highlight  

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

Dust in the Wind... and the Clouds... and the Atmosphere Dust in the Wind... and the Clouds... and the Atmosphere Submitter: Sassen, K., University of Alaska, Fairbanks Area of Research: Aerosol Properties Working Group(s): Aerosol Journal Reference: Sassen, K., P.J. DeMott, J.M. Propsero, and M.R. Poellot, Saharan Dust Storms and Indirect Aerosol Effects on Clouds: CRYSTAL-FACE Results, Geophys. Res. Ltt., 30(12), 1633, doi:10/1029/2003GL017371, 2003. PDL linear depolarization ratio (color scale on top) and relative returned power (in gray scale) of height versus time displays obtained on July 29, 2002, during the CRYSTAL-FACE experiment. Depicted are strong depolarizing upper tropospheric clouds (~10km), aerosols (δ ~.10 to .15) extending up to ~5.5km, and at lower right (scale adjusted to account for signal

498

Research Highlight  

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

First Observation-Based Estimates of Cloud-Free Aerosol Radiative Forcing First Observation-Based Estimates of Cloud-Free Aerosol Radiative Forcing Across China Download a printable PDF Submitter: Li, Z., University of Maryland Area of Research: Aerosol Properties Working Group(s): Aerosol Life Cycle Journal Reference: N/A Mean annual shortwave aerosol radiative forcing (SWARF) averaged across China. Spatial variation of the annual mean SW aerosol radiative forcing. Heavy loading of aerosols in China is widely known, but little is known about their impact on regional radiation budgets, which is often expressed as aerosol radiative forcing (ARF). Depending on their composition, aerosols can absorb a substantial amount of solar radiation, leading to a warming of the atmosphere and cooling of the surface. Many investigations have been made to characterize atmospheric aerosols and their radiative

499

Research Highlight  

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

Scale Shows True Weight of Aerosol Effects on Clouds Scale Shows True Weight of Aerosol Effects on Clouds Download a printable PDF Submitter: McComiskey, A. C., National Oceanic and Atmospheric Administration Area of Research: Aerosol Processes Working Group(s): Aerosol Life Cycle Journal Reference: McComiskey A and G Feingold. 2012. "The scale problem in quantifying aerosol indirect effects." Atmospheric Chemistry and Physics, 12, doi:10.5194/acp-12-1031-2012. Differing values: Values derived from aircraft and surface observations, which represent disaggregated data, differ from those derived from satellite-based data, which represent data aggregated at a range of levels. Currently, many climate change models treat the two types of data the same. Aerosols-tiny airborne particles from sources like pollution or desert

500

Research Highlight  

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

Cloud Phase Determination Using Ground-Based AERI Observations at SHEBA Cloud Phase Determination Using Ground-Based AERI Observations at SHEBA Submitter: Turner, D. D., National Oceanic and Atmospheric Administration Area of Research: General Circulation and Single Column Models/Parameterizations Working Group(s): Cloud Properties Journal Reference: Turner, D.D., S.A. Ackerman, B.A. Baum, H.E. Revercomb, and P. Yang, 2003: "Cloud Phase Determination Using Ground-Based AERI Observations at SHEBA," Journal of Applied Meteorology 42(6):701-715. The SHEBA experiment in Barrow, Alaska used data collected by the ground-based radiation observations from the Atmospheric Emitted Radiance Interferometer (AERI). (Photo Credit: SHEBA Project Office) Key Contributors: S.A. Ackerman, B.A. Baum, H.E. Revercomb, P. Yang, In the frigid environs of the Acrtic, ARM scientists at the North Slope of