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Note: This page contains sample records for the topic "arctic sea ice" from the National Library of EnergyBeta (NLEBeta).
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1

Recent Arctic Sea Ice Variability: Connections to the Arctic Oscillation and the ENSO  

E-Print Network (OSTI)

of regional and global climate through the ice albedo feed- back, insulating effect, deep water formationRecent Arctic Sea Ice Variability: Connections to the Arctic Oscillation and the ENSO Jiping Liu; accepted 20 April 2004; published 13 May 2004. [1] Trends in the satellite-derived Arctic sea ice

2

Characteristics of Arctic Sea-Ice Thickness Variability in GCMs  

Science Journals Connector (OSTI)

Skillful Arctic sea ice forecasts may be possible for lead times of months or even years owing to the persistence of thickness anomalies. In this study sea ice thickness variability is characterized in fully coupled GCMs and sea ice–ocean-only ...

Edward Blanchard-Wrigglesworth; Cecilia M. Bitz

2014-11-01T23:59:59.000Z

3

NAO influence on net sea ice production and exchanges in the Arctic region: a numerical study  

E-Print Network (OSTI)

ice cover suppresses the development of thermal insulation during the ice formation processNAO influence on net sea ice production and exchanges in the Arctic region: a numerical study Aixue The variability of net sea ice production and sea ice exchange between the Arctic and its adjacent seas

Hu, Aixue

4

A model of the threedimensional evolution of Arctic melt ponds on firstyear and multiyear sea ice  

E-Print Network (OSTI)

ice. In the summer the upper layers of sea ice and snow melts producing meltwater that accumulatesA model of the threedimensional evolution of Arctic melt ponds on firstyear and multiyear sea ice F in Arctic melt ponds on the surface of sea ice. An accurate estimate of the fraction of the sea ice surface

Feltham, Daniel

5

Optimization of a Sea Ice Model Using Basinwide Observations of Arctic Sea Ice Thickness, Extent, and Velocity  

E-Print Network (OSTI)

datasets. 1. Introduction Sea ice is important to the climate system because it insulates the cold polarOptimization of a Sea Ice Model Using Basinwide Observations of Arctic Sea Ice Thickness, Extent 2004, in final form 27 June 2005) ABSTRACT A stand-alone sea ice model is tuned and validated using

Feltham, Daniel

6

NAO influence on net sea ice production and exchanges in the Arctic region  

E-Print Network (OSTI)

suppresses the development of thermal insulation during the ice formation process. The North AtlanticNAO influence on net sea ice production and exchanges in the Arctic region Aixue Hu National Center of the net sea ice production and the sea ice exchanges between the Arctic and its adjacent seas are studied

Hu, Aixue

7

Estimating sea ice area flux across the Canadian Arctic Archipelago using enhanced AMSR-E  

E-Print Network (OSTI)

. This produced a net loss of sea ice area of about 122 Ã? 103 km2 or roughly 174 km3 aÃ?1 which is presumedEstimating sea ice area flux across the Canadian Arctic Archipelago using enhanced AMSR-E T. Agnew is used to estimate daily sea ice area fluxes between the Canadian Arctic Archipelago and the Arctic Ocean

Long, David G.

8

Arctic sea ice modeling with the material-point method.  

SciTech Connect

Arctic sea ice plays an important role in global climate by reflecting solar radiation and insulating the ocean from the atmosphere. Due to feedback effects, the Arctic sea ice cover is changing rapidly. To accurately model this change, high-resolution calculations must incorporate: (1) annual cycle of growth and melt due to radiative forcing; (2) mechanical deformation due to surface winds, ocean currents and Coriolis forces; and (3) localized effects of leads and ridges. We have demonstrated a new mathematical algorithm for solving the sea ice governing equations using the material-point method with an elastic-decohesive constitutive model. An initial comparison with the LANL CICE code indicates that the ice edge is sharper using Materials-Point Method (MPM), but that many of the overall features are similar.

Peterson, Kara J.; Bochev, Pavel Blagoveston

2010-04-01T23:59:59.000Z

9

Ising model for melt ponds on Arctic sea ice  

E-Print Network (OSTI)

The albedo of melting Arctic sea ice, a key parameter in climate modeling, is determined by pools of water on the ice surface. Recent observations show an onset of pond complexity at a critical area of about 100 square meters, attended by a transition in pond fractal dimension. To explain this behavior and provide a statistical physics approach to sea ice modeling, we introduce a two dimensional Ising model for pond evolution which incorporates ice-albedo feedback and the underlying thermodynamics. The binary magnetic spin variables in the Ising model correspond to the presence of melt water or ice on the sea ice surface. The model exhibits a second-order phase transition from isolated to clustered melt ponds, with the evolution of pond complexity in the clustered phase consistent with the observations.

Ma, Y -P; Golden, K M

2014-01-01T23:59:59.000Z

10

Arctic sea ice declined rapidly to unprec-edented low extents in the summer of 2007,  

E-Print Network (OSTI)

cooling, ice extent remains far below normal. Understanding Sea Ice Loss Key factors behind this recordArctic sea ice declined rapidly to unprec- edented low extents in the summer of 2007, raising concern that the Arctic may be on the verge of a fundamental transition toward a seasonal ice cover

Clements, Craig

11

A continuum model of melt pond evolution on Arctic sea ice Daniela Flocco1  

E-Print Network (OSTI)

the atmosphere and ocean. In particular, sea ice affects the polar climate by insulating the ocean fromA continuum model of melt pond evolution on Arctic sea ice Daniela Flocco1 and Daniel L. Feltham1 the Northern Hemisphere summer, absorbed solar radiation melts snow and the upper surface of Arctic sea ice

Feltham, Daniel

12

Multiple equilibria and abrupt transitions in Arctic summer sea ice extent  

E-Print Network (OSTI)

, version 3 (CCSM3). The resulting nonlinear equations produce abrupt sea ice transitions resembling thoseMultiple equilibria and abrupt transitions in Arctic summer sea ice extent William J. Merryfield monograph "Arctic Sea Ice Decline", 19 October 2007 Corresponding author address: Dr. William Merryfield

Monahan, Adam Hugh

13

Simulated Arctic atmospheric feedbacks associated with late summer sea ice anomalies  

E-Print Network (OSTI)

Simulated Arctic atmospheric feedbacks associated with late summer sea ice anomalies A. Rinke,1,2 K depend on regional and decadal variations in the coupled atmosphere-ocean-sea ice system. Citation: Rinke to investigate feedbacks between September sea ice anomalies in the Arctic and atmospheric conditions in autumn

Moore, John

14

Assessing the Predictability of the Beaufort Sea Minimum Ice Extent in a Changing Arctic Climate Regime  

E-Print Network (OSTI)

Understanding the climatic drivers of changes in sea ice extent in the Arctic has become increasingly important as record minima in the September sea ice extent continue to be reached. This research therefore addresses the question of which synoptic...

Quirk, Laura Marie

2014-04-25T23:59:59.000Z

15

The Atmospheric Response to Realistic Reduced Summer Arctic Sea Ice Anomalies  

E-Print Network (OSTI)

for the continued ice melt [Polyakov et al., 2005], and recent work shows that heat from the Atlantic layer can91 The Atmospheric Response to Realistic Reduced Summer Arctic Sea Ice Anomalies Uma S. Bhatt,1 and Robert A. Tomas3 The impact of reduced Arctic summer sea ice on the atmosphere is investigated by forcing

Bhatt, Uma

16

Scale Dependence and Localization of the Deformation of Arctic Sea Ice David Marsan  

E-Print Network (OSTI)

, and internal stress gradients, producing spatial gradients in the ice velocity that we refer to as deformationScale Dependence and Localization of the Deformation of Arctic Sea Ice David Marsan Laboratoire de of Arctic sea ice over a 3-day time period is performed for scales of 10 to 1000 km. The deformation field

17

Development, sensitivity analysis, and uncertainty quantification of high-fidelity arctic sea ice models.  

SciTech Connect

Arctic sea ice is an important component of the global climate system and due to feedback effects the Arctic ice cover is changing rapidly. Predictive mathematical models are of paramount importance for accurate estimates of the future ice trajectory. However, the sea ice components of Global Climate Models (GCMs) vary significantly in their prediction of the future state of Arctic sea ice and have generally underestimated the rate of decline in minimum sea ice extent seen over the past thirty years. One of the contributing factors to this variability is the sensitivity of the sea ice to model physical parameters. A new sea ice model that has the potential to improve sea ice predictions incorporates an anisotropic elastic-decohesive rheology and dynamics solved using the material-point method (MPM), which combines Lagrangian particles for advection with a background grid for gradient computations. We evaluate the variability of the Los Alamos National Laboratory CICE code and the MPM sea ice code for a single year simulation of the Arctic basin using consistent ocean and atmospheric forcing. Sensitivities of ice volume, ice area, ice extent, root mean square (RMS) ice speed, central Arctic ice thickness, and central Arctic ice speed with respect to ten different dynamic and thermodynamic parameters are evaluated both individually and in combination using the Design Analysis Kit for Optimization and Terascale Applications (DAKOTA). We find similar responses for the two codes and some interesting seasonal variability in the strength of the parameters on the solution.

Peterson, Kara J.; Bochev, Pavel Blagoveston; Paskaleva, Biliana S.

2010-09-01T23:59:59.000Z

18

Ice Mass Balance Buoys: A tool for measuring and attributing changes in the thickness of the Arctic sea ice cover  

E-Print Network (OSTI)

Ice Mass Balance Buoys: A tool for measuring and attributing changes in the thickness of the Arctic sea ice cover Jacqueline A. Richter-Menge1 , Donald K. Perovich1 , Bruce C. Elder1 , Keran Claffey1 Abstract Recent observational and modeling studies indicate that the Arctic sea ice cover is undergoing

Rigor, Ignatius G.

19

NAO influence on net sea ice production and exchanges in the Arctic region  

E-Print Network (OSTI)

insulation during the ice formation process. The North Atlantic Oscillation (NAO) related atmosphericNAO influence on net sea ice production and exchanges in the Arctic region Aixue Hu, Claes Rooth and Rainer Bleck February 18, 2003 Abstract The variability of the net sea ice production and the sea ice

Hu, Aixue

20

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 50, NO. 9, SEPTEMBER 2012 3317 Multiyear Arctic Sea Ice Classification  

E-Print Network (OSTI)

, QuikSCAT, sea ice. I. INTRODUCTION THE HIGH albedo and insulating properties of sea ice make Arctic Sea Ice Classification Using QuikSCAT Aaron M. Swan and David G. Long, Fellow, IEEE Abstract--Long-term trends in Arctic sea ice are of particular interest in studies of global temperature, climate change

Long, David G.

Note: This page contains sample records for the topic "arctic sea ice" 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

Variations in the age of Arctic sea-ice and summer sea-ice extent Ignatius G. Rigor1,2  

E-Print Network (OSTI)

. On time scales of days to weeks, wind stresses from storms produce ridges of sea-ice and areas of openVariations in the age of Arctic sea-ice and summer sea-ice extent Ignatius G. Rigor1,2 and John M] Three of the past six summers have exhibited record low sea-ice extent on the Arctic Ocean. These minima

Rigor, Ignatius G.

22

Decadal to seasonal variability of Arctic sea ice albedo  

E-Print Network (OSTI)

A controlling factor in the seasonal and climatological evolution of the sea ice cover is its albedo $\\alpha$. Here we analyze Arctic data from the Advanced Very High Resolution Radiometer (AVHRR) Polar Pathfinder and assess the seasonality and variability of broadband albedo from a 23 year daily record. We produce a histogram of daily albedo over ice covered regions in which the principal albedo transitions are seen; high albedo in late winter and spring, the onset of snow melt and melt pond formation in the summer, and fall freeze up. The bimodal late summer distribution demonstrates the combination of the poleward progression of the onset of melt with the coexistence of perennial bare ice with melt ponds and open water, which then merge to a broad peak at $\\alpha \\gtrsim $ 0.5. We find the interannual variability to be dominated by the low end of the $\\alpha$ distribution, highlighting the controlling influence of the ice thickness distribution and large-scale ice edge dynamics. The statistics obtained pro...

Agarwal, S; Wettlaufer, J S

2011-01-01T23:59:59.000Z

23

SHAPE-CONSTRAINED SEGMENTATION APPROACH FOR ARCTIC MULTIYEAR SEA ICE FLOE ANALYSIS  

E-Print Network (OSTI)

for automatic ice floe tracking from Synthetic Aperture Radar or optical remote sensing imagery employ adaptiveSHAPE-CONSTRAINED SEGMENTATION APPROACH FOR ARCTIC MULTIYEAR SEA ICE FLOE ANALYSIS Yuliya Tarabalka Research Association, MD, USA. e-mail: yuliya.tarabalka@inria.fr ABSTRACT The melting of sea ice

Boyer, Edmond

24

GEOPHYSICAL RESEARCH LETTERS, VOL. ???, XXXX, DOI:10.1029/, Projected decline in spring snow depth on Arctic sea ice caused  

E-Print Network (OSTI)

to be a factor in sea ice loss but also with competing effects. Snow accumulation on top of sea ice insulates on Arctic sea ice caused by progressively later autumn open ocean freeze-up this century P.J. Hezel1 , X- tic sea ice in the Coupled Model Intercomparison Project 5 (CMIP5) because of its importance for sea

Bitz, Cecilia

25

Chlorophyll a biomass and growth of sea-ice microalgae along a salinity gradient (southeastern Hudson Bay, Canadian Arctic)  

Science Journals Connector (OSTI)

The biomass of microalgae at the bottom of first-year sea ice, in southeastern Hudson Bay (Canadian Arctic), parallels an inshore-offshore salinity gradient caused by the under-ice plume of ... ice-algal biomass ...

Louis Legendre; Marie-Josée Martineau; Jean-Claude Therriault…

1992-09-01T23:59:59.000Z

26

Atmospheric Circulation and Its Effect on Arctic Sea Ice in CCSM3 Simulations at Medium and High Resolution*  

E-Print Network (OSTI)

the Canadian archipelago, where the T85 winds produce thicker ice than their T42 counterparts. Seasonal forcingAtmospheric Circulation and Its Effect on Arctic Sea Ice in CCSM3 Simulations at Medium and High) ABSTRACT The simulation of Arctic sea ice and surface winds changes significantly when Community Climate

Bitz, Cecilia

27

Arctic ice islands  

SciTech Connect

The development of offshore oil and gas resources in the Arctic waters of Alaska requires offshore structures which successfully resist the lateral forces due to moving, drifting ice. Ice islands are floating, a tabular icebergs, up to 60 meters thick, of solid ice throughout their thickness. The ice islands are thus regarded as the strongest ice features in the Arctic; fixed offshore structures which can directly withstand the impact of ice islands are possible but in some locations may be so expensive as to make oilfield development uneconomic. The resolution of the ice island problem requires two research steps: (1) calculation of the probability of interaction between an ice island and an offshore structure in a given region; and (2) if the probability if sufficiently large, then the study of possible interactions between ice island and structure, to discover mitigative measures to deal with the moving ice island. The ice island research conducted during the 1983-1988 interval, which is summarized in this report, was concerned with the first step. Monte Carlo simulations of ice island generation and movement suggest that ice island lifetimes range from 0 to 70 years, and that 85% of the lifetimes are less then 35 years. The simulation shows a mean value of 18 ice islands present at any time in the Arctic Ocean, with a 90% probability of less than 30 ice islands. At this time, approximately 34 ice islands are known, from observations, to exist in the Arctic Ocean, not including the 10-meter thick class of ice islands. Return interval plots from the simulation show that coastal zones of the Beaufort and Chukchi Seas, already leased for oil development, have ice island recurrences of 10 to 100 years. This implies that the ice island hazard must be considered thoroughly, and appropriate safety measures adopted, when offshore oil production plans are formulated for the Alaskan Arctic offshore. 132 refs., 161 figs., 17 tabs.

Sackinger, W.M.; Jeffries, M.O.; Lu, M.C.; Li, F.C.

1988-01-01T23:59:59.000Z

28

Precipitation Shifts over Western North America as a Result of Declining Arctic Sea Ice Cover: The Coupled System Response  

Science Journals Connector (OSTI)

Changes in Arctic sea ice cover have the potential to impact midlatitude climate. A previous sensitivity study utilizing the National Center for Atmospheric Research’s (NCAR) atmospheric general circulation model [AGCM; Community Climate Model, ...

Jacob O. Sewall

2005-12-01T23:59:59.000Z

29

The development of a signal processing network for a real-time Arctic sea ice classification system  

E-Print Network (OSTI)

THE DEVELOPMENT OF A SIGNAL PROCESSING NETWORK FOR A REAL-TIME ARCTIC SEA ICE CLASSIFICATION SYSTEM A Thesis by WILLIAM DOUGLAS NORDHAUS Submitted to the Graduate College of Texas A)M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE August 1973 Major Subject: Electrical Engineering THE DEVELOPMENT OF A SIGNAL PROCESSING NETWORK FOR A REAL-TIME ARCTIC SEA ICE CLASSIFICATION SYSTEM A Thesis by William Douglas Nordhaus Approved as to style...

Nordhaus, William D

1973-01-01T23:59:59.000Z

30

Modeling the High-Frequency Component of Arctic Sea Ice Drift and Deformation  

Science Journals Connector (OSTI)

Buoy observations of sea ice drift show that sea ice motion and deformation contain substantial high-frequency variability at subdaily timescales. However, numerical simulations of the sea ice dynamics normally do not include processes on such ...

Petra Heil; William D. Hibler III

2002-11-01T23:59:59.000Z

31

Critical Mechanisms for the Formation of Extreme Arctic Sea-Ice Extent in the Summers of 2007 and 1996  

SciTech Connect

A warming Arctic climate is undergoing significant e 21 nvironmental change, most evidenced by the reduction of Arctic sea-ice extent during the summer. In this study, we examine two extreme anomalies of September sea-ice extent in 2007 and 1996, and investigate the impacts of cloud fraction (CF), atmospheric precipitable water vapor (PWV), downwelling longwave flux (DLF), surface air temperature (SAT), pressure and winds on the sea-ice variation in 2007 and 1996 using both satellite-derived sea-ice products and MERRA reanalysis. The area of the Laptev, East Siberian and West Chukchi seas (70-90oN, 90-180oE) has experienced the largest variation in sea-ice extent from year-to-year and defined here as the Area Of Focus (AOF). The record low September sea-ice extent in 2007 was associated with positive anomalies 30 of CF, PWV, DLF, and SAT over the AOF. Persistent anti-cyclone positioned over the Beaufort Sea coupled with low pressure over Eurasia induced easterly zonal and southerly meridional winds. In contrast, negative CF, PWV, DLF and SAT anomalies, as well as opposite wind patterns to those in 2007, characterized the 1996 high September sea-ice extent. Through this study, we hypothesize the following positive feedbacks of clouds, water vapor, radiation and atmospheric variables on the sea-ice retreat during the summer 2007. The record low sea-ice extent during the summer 2007 is initially triggered by the atmospheric circulation anomaly. The southerly winds across the Chukchi and East Siberian seas transport warm, moist air from the north Pacific, which is not only enhancing sea-ice melt across the AOF, but also increasing clouds. The positive cloud feedback results in higher SAT and more sea-ice melt. Therefore, 40 more water vapor could be evaporated from open seas and higher SAT to form more clouds, which will enhance positive cloud feedback. This enhanced positive cloud feedback will then further increase SAT and accelerate the sea-ice retreat during the summer 2007.

Dong, Xiquan; Zib, Benjamin J.; Xi, Baike; Stanfield, Ryan; Deng, Yi; Zhang, Xiangdong; Lin, B.; Long, Charles N.

2014-07-29T23:59:59.000Z

32

Historical Antarctic mean sea ice area, sea ice trends, and winds in CMIP5 simulations  

E-Print Network (OSTI)

In contrast to Arctic sea ice, average Antarctic sea ice area is not retreating but has slowly increased since satellite measurements began in 1979. While most climate models from the Coupled Model Intercomparison Project ...

Mahlstein, Irina

33

AMSR-E Algorithm Theoretical Basis Document: Sea Ice Products  

E-Print Network (OSTI)

the Arctic perennial ice regions, and the ice temperature is produced from an algorithm similar to the Nimbus1 AMSR-E Algorithm Theoretical Basis Document: Sea Ice Products Thorsten Markus and Donald J 20771 1. Overview The AMSR-E sea ice standard level 3 products include sea ice concentration, sea ice

Waliser, Duane E.

34

Floating Glacial Ice Caps in the Arctic Ocean  

Science Journals Connector (OSTI)

...obtained from isotopic studies of the Camp Century ice core. The second is based...obtained from isotopic studies of the Camp Century ice core. The second is based...Arctic Ocean Arctic region benthonic Camp Century Cenozoic cores deep-sea evidence...

Wallace S. Broecker

1975-06-13T23:59:59.000Z

35

Arctic sea-ice decline archived by multicentury annual-resolution record from crustose coralline algal proxy  

Science Journals Connector (OSTI)

...stratification, and deep water mass formation, among other...winter sea ice via wind-driven anomalies of sea-ice velocity, surface vertical...anomalously high due to wind-driven equatorward...are indicated on the map (Methods). Black circle...three accelerator mass spectrometry (AMS...

Jochen Halfar; Walter H. Adey; Andreas Kronz; Steffen Hetzinger; Evan Edinger; William W. Fitzhugh

2013-01-01T23:59:59.000Z

36

Application of a SeaWinds/QuikSCAT sea ice melt algorithm for assessing melt dynamics in the Canadian Arctic Archipelago  

E-Print Network (OSTI)

Application of a SeaWinds/QuikSCAT sea ice melt algorithm for assessing melt dynamics] A remotely sensed sea ice melt algorithm utilizing SeaWinds/QuikSCAT (QuikSCAT) data is developed and applied resolution radiometer Polar Pathfinder (APP-x) data set is used to identify spatially coupled relationships

37

SNOW ON ANTARCTIC SEA ICE Robert A. Massom,1  

E-Print Network (OSTI)

SNOW ON ANTARCTIC SEA ICE Robert A. Massom,1 Hajo Eicken,2 Christian Haas,3 Martin O. Jeffries,2 on Antarctic sea ice plays a complex and highly variable role in air-sea-ice interaction pro- cesses of thicker snow and thin- ner ice in the Antarctic relative to the Arctic (e.g., the importance of flooding

Warren, Stephen

38

Seasonal predictions of ice extent in the Arctic Ocean R. W. Lindsay,1  

E-Print Network (OSTI)

Service and the U. S. National Ice Center) produces summer outlooks of ice conditions for specific regionsSeasonal predictions of ice extent in the Arctic Ocean R. W. Lindsay,1 J. Zhang,1 A. J. Schweiger,1 29 February 2008. [1] How well can the extent of arctic sea ice be predicted for lead periods of up

Zhang, Jinlun

39

Sea Ice Enhancements to Polar WRF* Keith M. Hines1**  

E-Print Network (OSTI)

covering Europe and the Arctic Ocean demonstrate remote impacts of Arctic sea ice thickness on18 midSea Ice Enhancements to Polar WRF* Keith M. Hines1** , David H. Bromwich,1,2 , Lesheng Bai1 model (Polar WRF), a polar-optimized version of2 WRF, is developed by and available to the community

Howat, Ian M.

40

Fractionation of Dissolved Solutes and Chromophoric Dissolved Organic Matter During Experimental Sea Ice Formation.  

E-Print Network (OSTI)

In the past decade there has been an overall decrease in Arctic Ocean sea ice cover. Changes to the ice cover have important consequences for organic carbon cycling, especially over the continental shelves. When sea ice is formed, dissolved organic...

Smith, Stephanie 1990-

2012-04-16T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

Correlation between present-day model simulation of Arctic cloud radiative forcing and sea ice consistent with positive winter convective cloud feedback  

E-Print Network (OSTI)

A positive feedback on winter sea-ice loss, based on warming due to radiative forcing caused by the onset of convective clouds in response to sea-ice loss, has recently been proposed. This feedback has thus far been ...

Emanuel, Kerry Andrew

42

Estimating the Sea Ice Compressive Strength from Satellite-Derived Sea Ice Drift and NCEP Reanalysis Data  

Science Journals Connector (OSTI)

Satellite-derived sea ice drift maps and sea level pressure from reanalysis data are used to infer upper and lower bounds on the large-scale compressive strength of Arctic sea ice. To this end, the two datasets are searched for special situations ...

L-B. Tremblay; M. Hakakian

2006-11-01T23:59:59.000Z

43

The pan-Arctic biodiversity of marine pelagic and sea-ice unicellular eukaryotes: a first-attempt assessment  

Science Journals Connector (OSTI)

Arctic marine unicellular eukaryotes are composed of microalgae and ... . There are approximately 5,000 recognized legitimate marine phytoplankton species and an unknown number of ... . We report a total of 2,106...

Michel Poulin; Niels Daugbjerg; Rolf Gradinger; Ludmila Ilyash…

2011-03-01T23:59:59.000Z

44

Can a Convective Cloud Feedback Help to Eliminate Winter Sea Ice at High CO2 Concentrations?  

E-Print Network (OSTI)

have remote effects on global climate as well. Accurate forecasting of winter sea ice has significantCan a Convective Cloud Feedback Help to Eliminate Winter Sea Ice at High CO2 Concentrations? DORIAN) ABSTRACT Winter sea ice dramatically cools the Arctic climate during the coldest months of the year and may

Tziperman, Eli

45

Modelling the reorientation of sea-ice faults as the wind changes direction  

E-Print Network (OSTI)

in the Ant- arctic. As sea ice reflects up to 80% of incident solar radiation, insulates the ocean fromModelling the reorientation of sea-ice faults as the wind changes direction Alexander V. WILCHINSKY-1290, USA ABSTRACT. A discrete-element model of sea ice is used to study how a 908 change in wind direction

Feltham, Daniel

46

Reducing uncertainty in high-resolution sea ice models.  

SciTech Connect

Arctic sea ice is an important component of the global climate system, reflecting a significant amount of solar radiation, insulating the ocean from the atmosphere and influencing ocean circulation by modifying the salinity of the upper ocean. The thickness and extent of Arctic sea ice have shown a significant decline in recent decades with implications for global climate as well as regional geopolitics. Increasing interest in exploration as well as climate feedback effects make predictive mathematical modeling of sea ice a task of tremendous practical import. Satellite data obtained over the last few decades have provided a wealth of information on sea ice motion and deformation. The data clearly show that ice deformation is focused along narrow linear features and this type of deformation is not well-represented in existing models. To improve sea ice dynamics we have incorporated an anisotropic rheology into the Los Alamos National Laboratory global sea ice model, CICE. Sensitivity analyses were performed using the Design Analysis Kit for Optimization and Terascale Applications (DAKOTA) to determine the impact of material parameters on sea ice response functions. Two material strength parameters that exhibited the most significant impact on responses were further analyzed to evaluate their influence on quantitative comparisons between model output and data. The sensitivity analysis along with ten year model runs indicate that while the anisotropic rheology provides some benefit in velocity predictions, additional improvements are required to make this material model a viable alternative for global sea ice simulations.

Peterson, Kara J.; Bochev, Pavel Blagoveston

2013-07-01T23:59:59.000Z

47

NorthNorth Sea ice and glaciers are melting, permafrost is thawing, tundra  

E-Print Network (OSTI)

], in which rising temperatures produce short- er winters and less extensive snow and ice cover, with ripple#12;NorthNorth in the Sea ice and glaciers are melting, permafrost is thawing, tundra scientists yielding to shrubs--and changes will affect not just the Arctic but the entire planet REDUCTION IN SEA ICE

Sturm, Matthew

48

Intensive Sea Surface Microlayer Investigations of Open Leads in the Pack Ice during Arctic Ocean 2001 Expedition  

Science Journals Connector (OSTI)

3-7 Studies of microlayer properties have been conducted on freshwater lakes, seas, and temperate open oceans. ... The wind factor (Pw) discussed is an approximate measure of the wind power during sampling collection, calculated as Pw = 1/2ld(U)3, where l is the estimated fetch distance (m), d is air density (approximated from air pressure in hPa), and U the average wind speed (m s-1) measured at Z = 36 m. ... Williams et al.12 reported reduction of oceanic surface tension in a comprehensive study of surface characteristics in the Pacific Ocean off the coast of California. ...

Johan C. Knulst; Dena Rosenberger; Brian Thompson; Jussi Paatero

2003-11-01T23:59:59.000Z

49

E-Print Network 3.0 - arctic animals-a review Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

ROTHROCK... and the intensification of the cyclonic circulation in the eastern Arctic Ocean. The response of Arctic sea ice... into the eastern Arctic from the Canada Basin,...

50

Controls on Eurasian coastal sea ice formation, melt onset and decay from ERS scatterometry: regional contrasts and effects of river  

E-Print Network (OSTI)

first-year sea ice (FYI) are observed in the Eurasian Arctic using the C-band (5.3 GHz) European RemoteControls on Eurasian coastal sea ice formation, melt onset and decay from ERS scatterometry and Kolyma rivers. Melt onset of the sea ice surface is associated with abrupt changes in s0 40, with values

Smith, Laurence C.

51

Assessment of sea-ice albedo radiative forcing and feedback over the Northern Hemisphere from 1982 to 2009 using satellite and reanalysis data  

Science Journals Connector (OSTI)

The decreasing surface albedo caused by continously retreating sea ice over Arctic plays a critical role in Arctic warming amplification. However, the quantification of the change in radiative forcing at top of atmosphere (TOA) introduced by the ...

Yunfeng Cao; Shunlin Liang; Xiaona Chen; Tao He

52

On the Link between Arctic Sea Ice Decline and the Freshwater Content of the Beaufort Gyre: Insights from a Simple Process Model  

Science Journals Connector (OSTI)

Recent satellite and hydrographic observations have shown that the rate of freshwater accumulation in the Beaufort Gyre of the Arctic Ocean has accelerated over the past decade. This acceleration has coincided with the dramatic decline observed in ...

Peter E. D. Davis; Camille Lique; Helen L. Johnson

2014-11-01T23:59:59.000Z

53

ARKTOS: An intelligent system for SAR sea ice image classification  

E-Print Network (OSTI)

We present an intelligent system for satellite sea ice image analysis named Advanced Reasoning using Knowledge for T ping Of Sea ice (ARKTOS). ARKTOS performs fully automated analysis of synthetic aperture radar (SAR) sea ice images by mimicking...

Soh, L. K.; Tsatsoulis, Costas; Gineris, D.; Bertoia, C.

2004-01-01T23:59:59.000Z

54

E-Print Network 3.0 - arctic marine oil Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

mammals... the Arctic (Figure 3). The loss of sea ice affects marine access, regional weather, ecosystem changes... spill response and damage assessment. As the Arctic Ocean...

55

E-Print Network 3.0 - arctic vegetation types Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: Dynamic vegetation Figure 3: Evolution of regional arctic models. Geophysical ocean-sea ice... that can be adapted to focus resolution on the Arctic. Stand alone ASM...

56

Ocean and Sea Ice SAF Technical Note  

E-Print Network (OSTI)

Ocean and Sea Ice SAF Technical Note SAF/OSI/CDOP/KNMI/TEC/RP/147 Validation of ASCAT 12.5-km winds The Ocean and Sea Ice Satellite Application Facility (OSI SAF) delivers an operational level 2 wind product produces a level 1 product with 12.5-km WVC spacing that has a resolution of approximately 25 km. Since

Stoffelen, Ad

57

Ocean and Sea Ice SAF Technical Note  

E-Print Network (OSTI)

Ocean and Sea Ice SAF Technical Note SAF/OSI/CDOP2/KNMI/TEC/RP/194 Quality Control of Ku. The OSCAT level 2a data are available in near-real time and OWDP is used at KNMI to produce the Ocean and Sea Ice (OSI) SAF wind product which is made available to users. A beta version of OWDP is also

Stoffelen, Ad

58

The convective desalination of sea ice  

E-Print Network (OSTI)

containing both liquid brine and solid (pure water) ice. Frad is the flux of penetrating solar radiation. Thus the thermal properties of sea ice are composed of those of the solid and liquid phases that make up sea ice. Fixed-salinity models used in older... components of the physical climate system. Evolving in space and time, sea ice has thermal and mechanical properties that must be updated dynamically for a faithful representation within climate models. Such models are vital tools to help people everywhere...

Rees Jones, David

2014-07-01T23:59:59.000Z

59

The Role of Sea Ice in the Fate of Contaminants in the Arctic Ocean:? Plutonium Atom Ratios in the Fram Strait  

Science Journals Connector (OSTI)

Indeed, the largest Sellafield discharges of Pu occurred in the 1970s and were characterized by 240Pu/239Pu close to 0.18, although the ratio increased to 0.21?0.22 in the recent years as a result of an increase in burn up time of the fuel for civil nuclear power production (20, 21). ... In Geological History of the Polar Oceans:? Arctic Versus Antarctic; Bleil, U., Thiede, J., Eds; Kluwer Academic Publishers:? Dordrecht, The Netherlands, 1990; pp 317?335. ... We report thermal ionization mass spectrometry measurements of 239Pu, 240Pu, 241Pu, 242Pu, and 237Np isolated from oceanic, estuarine, and riverine sediments from the Arctic Ocean Basin. ...

Pere Masqué; J. Kirk Cochran; Dierk Hebbeln; David J. Hirschberg; Dirk Dethleff; Amelie Winkler

2003-10-08T23:59:59.000Z

60

J1.15 PARAMETERIZING THE TURBULENT SURFACE FLUXES OVER SUMMER SEA ICE Edgar L Andreas1*  

E-Print Network (OSTI)

of the surface heat budget for that year at several sites around the SHEBA ice camp (Andreas et al. 1999; Persson1 of 9 J1.15 PARAMETERIZING THE TURBULENT SURFACE FLUXES OVER SUMMER SEA ICE Edgar L Andreas1* , P to study the Surface Heat Budget of the Arctic Ocean (SHEBA) lasted for a year (Uttal et al. 2002). Our

Persson, Ola

Note: This page contains sample records for the topic "arctic sea ice" 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

Climate, Ocean and Sea Ice Modeling (COSIM)  

NLE Websites -- All DOE Office Websites (Extended Search)

Earth, Space Sciences » Earth, Space Sciences » Climate, Ocean and Sea Ice Modeling (COSIM) Climate, Ocean and Sea Ice Modeling (COSIM) The COSIM project develops advanced ocean and ice models for evaluating the role of ocean and ice in high-latitude climate change and projecting the impacts of high-latitude change on regions throughout the globe. Get Expertise Phil Jones COSIM Email Matthew Hecht COSIM Email Elizabeth Hunke COSIM Email Mat Maltrud COSIM Email Bill Lipscomb COSIM Email Scott Elliott COSIM Email Todd Ringler COSIM Email We are also developing a set of next-generation ocean and ice models with variable resolution horizontal grids to focus resolution on regions of interest or regions where specific processes (like eddies) need to be resolved. Summary The COSIM project develops advanced ocean and ice models for evaluating the

62

Polar Sea Ice Mapping Using SeaWinds Data Hyrum S. Anderson and David G. Long  

E-Print Network (OSTI)

of Bayes detection to produce sea ice extent maps. Statistical models for sea ice and ocean are represented information is incorpo- rated through the loss terms associated with Bayes risk. Sea ice extent maps producedPolar Sea Ice Mapping Using SeaWinds Data Hyrum S. Anderson and David G. Long Brigham Young

Long, David G.

63

Photoadaptation of high Arctic ice algae  

Science Journals Connector (OSTI)

... of the surface snow cover allowed considerable control over the light conditions of the epontic algae. Algal material was collected from the bottom few centimetres of ice with a SIPRE ... growth in their respective light environments.

Glenn F. Cota

1985-05-16T23:59:59.000Z

64

Greenland Ice Sheet "Sliding" a Small Contributor to Future Sea...  

Office of Science (SC) Website

(ice2sea manuscript no. 121). ElmerIce simulations were performed using high-performance computing resources from Grand quipement National de Calcul Intensif - Centre...

65

Seasonal variation of upwelling in the Alaskan Beaufort Sea: Impact of sea ice cover  

E-Print Network (OSTI)

that lateral ocean heat flux from the shelf to the basin melts a substantial amount of ice in the marginal iceSeasonal variation of upwelling in the Alaskan Beaufort Sea: Impact of sea ice cover Lena M to characterize differences in upwelling near the shelf break in the Alaskan Beaufort Sea due to varying sea ice

Pickart, Robert S.

66

Seasonal variation of upwelling in the Alaskan Beaufort Sea: Impact of sea ice cover  

E-Print Network (OSTI)

ocean heat flux42 from the shelf to the basin melts a substantial amount of ice in the marginal ice Seasonal variation of upwelling in the Alaskan Beaufort Sea: Impact of sea ice cover Lena M the shelfbreak in the Alaskan Beaufort Sea due to3 varying sea-ice conditions. The record is divided into three

Pickart, Robert S.

67

Hydrographic Preconditioning for Seasonal Sea Ice Anomalies in the Labrador Sea  

E-Print Network (OSTI)

This study investigates the hydrographic processes involved in setting the maximum wintertime sea ice (SI) extent in the Labrador Sea and Baffin Bay. The analysis is based on an ocean and sea ice state estimate covering ...

Fenty, Ian

68

An energy-diagnostics intercomparison of coupled ice-ocean Arctic models  

E-Print Network (OSTI)

An energy-diagnostics intercomparison of coupled ice-ocean Arctic models Petteri Uotila a,*, David are estimated based on results from six different coupled ice- ocean models. The components of the kinetic of potential and kinetic energies. The models produce arctic boundary undercurrents controlled by the non

Zhang, Jinlun

69

ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE  

E-Print Network (OSTI)

ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE DURING THE LAST DEGLACIATION Anders E the sources of sea level rise and freshwater dis- charge to the global oceans associated with retreat of ice­10 m sea level rise at 19.0­19.5 ka, sourced largely from Northern Hemisphere ice sheet retreat

Carlson, Anders

70

Ocean and Sea Ice SAF Technical Note  

E-Print Network (OSTI)

Ocean and Sea Ice SAF Technical Note SAF/OSI/CDOP/KNMI/TEC/TN/165 CMOD5.n - the CMOD5 GMF SAF to produce neutral winds rather than real 10m winds. Currently, the CMOD5 Geophysical Model]. KNMI subsequently produced a CMOD5.n Lookup Table and tested the retrieved Maximum Likelihood Estimator

Stoffelen, Ad

71

Rigid pile response to ice plate and current loads  

E-Print Network (OSTI)

, sea ice scouring, earthquake analysis, and geotechnical considerations in Arctic designs. Arctic offshore engineering research suddenly incr eased during the mid-seventies when the oil industry began exploration for oil in the Beaufort Sea..., sea ice scouring, earthquake analysis, and geotechnical considerations in Arctic designs. Arctic offshore engineering research suddenly incr eased during the mid-seventies when the oil industry began exploration for oil in the Beaufort Sea...

Nolte, John George

2012-06-07T23:59:59.000Z

72

Sea ice control of water isotope transport to Antarctica and implications for ice core interpretation  

E-Print Network (OSTI)

associated with diabatic heating. The interior deuterium excess response is more strongly affected by sea ice ice and the local conditions may have remote influences [Jacobs and Comiso, 1997; StammerjohnSea ice control of water isotope transport to Antarctica and implications for ice core

Noone, David

73

INVESTIGATION OF SEASONAL SEA-ICE THICKNESS VARIABILITY IN THE ROSS SEA Beth A. Schellenberg  

E-Print Network (OSTI)

routinely produced weekly ice charts since the 1970's. From the period of 1995 to 2000, classificationINVESTIGATION OF SEASONAL SEA-ICE THICKNESS VARIABILITY IN THE ROSS SEA Beth A. Schellenberg P1.23 1. INTRODUCTION A number of studies suggest a connections between sea-ice variability

Geiger, Cathleen

74

Real-time processing of remote sensor data as applied to Arctic ice classification  

E-Print Network (OSTI)

as an earth observations system [4]; remote sensor measurements (radar measurements) from an environmental situation (the Arctic surface) are processed and analyzed at a real-time rate to yield a usable output data product (ice statistics) which in turn...REAL-TIME PROCESSING OF REMOTE SENSOR DATA AS APPLIED TO ARCTIC ICE CLASSIFICATION A Thesis by JAMES AUSTIN PERMENTER partial ! Submitted to the Graduate College of Texas A)M University in fulfillment of the requirement for the degree...

Permenter, James Austin

1973-01-01T23:59:59.000Z

75

Effects of Changes in Arctic Lake and River Ice Terry Prowse, Knut Alfredsen, Spyros Beltaos, Barrie R. Bonsal,  

E-Print Network (OSTI)

ice in the Arctic are projected to produce a variety of effects on hydrologic, ecological, and socio impacts that are directly produced by changes in freshwater ice. The details and diversityEffects of Changes in Arctic Lake and River Ice Terry Prowse, Knut Alfredsen, Spyros Beltaos

Vincent, Warwick F.

76

A ``triple sea-ice state'' mechanism for the abrupt warming and synchronous ice sheet collapses during Heinrich events  

E-Print Network (OSTI)

the strong sea ice albedo and insulating feedbacks. Such abrupt sea ice changes can also account was trapped at the base of the ice sheet due to the thick and insulating glacier that prevented it fromA ``triple sea-ice state'' mechanism for the abrupt warming and synchronous ice sheet collapses

Tziperman, Eli

77

State estimation of the Labrador Sea with a coupled sea ice-ocean adjoint model  

E-Print Network (OSTI)

Sea ice (SI) and ocean variability in marginal polar and subpolar seas are closely coupled. SI variability in the Labrador Sea is of climatic interest because of its relationship to deep convection/mode water formation, ...

Fenty, Ian Gouverneur

2010-01-01T23:59:59.000Z

78

E-Print Network 3.0 - arctic marine food Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

mammals... the Arctic (Figure 3). The loss of sea ice affects marine access, regional weather, ecosystem changes... . Such a system also includes a marine Distributed...

79

E-Print Network 3.0 - arctic marine sediments Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

mammals... the Arctic (Figure 3). The loss of sea ice affects marine access, regional weather, ecosystem changes... . Such a system also includes a marine Distributed...

80

E-Print Network 3.0 - arctic marine ecosystem Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: the Arctic (Figure 3). The loss of sea ice affects marine access, regional weather, ecosystem changes... to provide reliable predictions of the changes coming to...

Note: This page contains sample records for the topic "arctic sea ice" 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

POLAR SEA-ICE CLASSIFICATION USING ENHANCED RESOLUTION NSCAT DATA  

E-Print Network (OSTI)

POLAR SEA-ICE CLASSIFICATION USING ENHANCED RESOLUTION NSCAT DATA Q. P. Remund and D. G. Long of the scatterometer image reconstruction with filter (SIRF) algorithm. SIRF produces images of A and B where A is U is shown to have high correlation with the NSIDC SSM/I derived multiyear ice maps. INTRODUCTION Polar sea

Long, David G.

82

NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004  

E-Print Network (OSTI)

NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004: Part I. Database of the Barents, Kara and Information Series, Volume 9 NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004: Part I. Database. INTRODUCTION................................................................................. 33 2. HISTORY

83

Coupled Sea Ice–Ocean-State Estimation in the Labrador Sea and Baffin Bay  

E-Print Network (OSTI)

Sea ice variability in the Labrador Sea is of climatic interest because of its relationship to deep convection, mode-water formation, and the North Atlantic atmospheric circulation. Historically, quantifying the relationship ...

Fenty, Ian

84

ARKTOS: An Intelligent System for SAR Sea Ice Image Classification Leen-Kiat Soh1  

E-Print Network (OSTI)

in meteorology and in global climate studies. For example, the thickness of sea ice influences the heat fluxARKTOS: An Intelligent System for SAR Sea Ice Image Classification Leen-Kiat Soh1 , Costas sea ice image analysis named ARKTOS (Advanced Reasoning using Knowledge for Typing Of Sea ice). ARKTOS

Kansas, University of

85

Time varying arctic climate change amplification  

SciTech Connect

During the past 130 years the global mean surface air temperature has risen by about 0.75 K. Due to feedbacks -- including the snow/ice albedo feedback -- the warming in the Arctic is expected to proceed at a faster rate than the global average. Climate model simulations suggest that this Arctic amplification produces warming that is two to three times larger than the global mean. Understanding the Arctic amplification is essential for projections of future Arctic climate including sea ice extent and melting of the Greenland ice sheet. We use the temperature records from the Arctic stations to show that (a) the Arctic amplification is larger at latitudes above 700 N compared to those within 64-70oN belt, and that, surprisingly; (b) the ratio of the Arctic to global rate of temperature change is not constant but varies on the decadal timescale. This time dependence will affect future projections of climate changes in the Arctic.

Chylek, Petr [Los Alamos National Laboratory; Dubey, Manvendra K [Los Alamos National Laboratory; Lesins, Glen [DALLHOUSIE U; Wang, Muyin [NOAA/JISAO

2009-01-01T23:59:59.000Z

86

Iterative Estimationof Antarctic Sea Ice Extent Using SeaWindsData QuinnP. Remund and David G. Long  

E-Print Network (OSTI)

an importantcomponent in global geophysical processes. For example, the insulating nature of sea ice impedes heatIterative Estimationof Antarctic Sea Ice Extent Using SeaWindsData QuinnP. Remund and David G. Long-378-4383,FAX: 801-378-6586 Abstract- Polar sea ice extent is an important input to global climate models

Long, David G.

87

ARM - Lesson Plans: When Floating Ice Melts in the Sea  

NLE Websites -- All DOE Office Websites (Extended Search)

Questions Does the water overflow when ice melts? Do you think that melting icebergs will make the sea level rise? Do you have any reason to support your answer in question (2)...

88

Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise  

E-Print Network (OSTI)

make a large sea?level rise contribu- tion, Geophys. Res.and Antarctic ice sheets to sea level rise E. Rignot, 1,2 I.ice sheets to sea level rise, Geophys. Res. Lett. , 38,

Rignot, E.; Velicogna, I.; van den Broeke, M. R; Monaghan, A.; Lenaerts, J. T. M

2011-01-01T23:59:59.000Z

89

Climate science: Vast costs of Arctic change  

Science Journals Connector (OSTI)

... As the amount of Arctic sea ice declines at an unprecedented rate, the thawing of offshore permafrost releases methane. A 50-gigatonne (Gt) reservoir of methane, stored in the ...

Gail Whiteman; Chris Hope; Peter Wadhams

2013-07-24T23:59:59.000Z

90

A Model-Based Decomposition of the Sea Ice–Atmosphere Feedback over the Barents Sea during Winter  

Science Journals Connector (OSTI)

The feedback between Barents Sea ice and the winter atmosphere was studied in a modeling framework by decomposing it into two sequential boundary forcing experiments. The Community Ice Code (CICE) model was initialized with anomalously high sea ...

Jessica Liptak; Courtenay Strong

2014-04-01T23:59:59.000Z

91

Modeling Coulombic failure of sea ice with leads Alexander V. Wilchinsky1  

E-Print Network (OSTI)

Modeling Coulombic failure of sea ice with leads Alexander V. Wilchinsky1 and Daniel L. Feltham1 ice failure under lowconfinement compression is modeled with a linear Coulombic criterion that can of anisotropy we consider a simplified anisotropic sea ice model where the sea ice thickness depends

Feltham, Daniel

92

The role of sea ice in the temperature-precipitation feedback of glacial cycles  

E-Print Network (OSTI)

precipitation over the ice sheets. The insulating effect of the sea ice on the hydrological cycle is foundThe role of sea ice in the temperature-precipitation feedback of glacial cycles Hezi Gildor · Yosef climate history can shed some light. Sea ice is a key player in the climate system and in the hydrological

Tziperman, Eli

93

The role of sea ice in the temperature-precipitation feedback of glacial cycles  

E-Print Network (OSTI)

to an increase in snow precipitation over the ice sheets. The insulating effect of the sea iceThe role of sea ice in the temperature-precipitation feedback of glacial cycles Hezi Gildor · Yosef unsatisfactory, yet upon which past climate history can shed some light. Sea ice is a key player in the climate

Tziperman, Eli

94

10.1098/rsta.2003.1244 Sea-ice switches and abrupt climate change  

E-Print Network (OSTI)

of sea-ice cover|through its strong cooling ice{albedo feedback, its insulating e®ect on local10.1098/rsta.2003.1244 Sea-ice switches and abrupt climate change By Hezi Gildor1 a n d Eli propose that past abrupt climate changes were probably a result of rapid and extensive variations in sea-ice

Tziperman, Eli

95

Modeled methanesulfonic acid (MSA) deposition in Antarctica and its relationship to sea ice  

E-Print Network (OSTI)

been investigated with the goal of producing a proxy for sea ice cover in past climates [SaigneModeled methanesulfonic acid (MSA) deposition in Antarctica and its relationship to sea ice P. J] Methanesulfonic acid (MSA) has previously been measured in ice cores in Antarctica as a proxy for sea ice extent

Holmes, Christopher D.

96

A model for the consolidation of rafted sea ice , D. L. Feltham2,3  

E-Print Network (OSTI)

. This process is widespread in the North Caspian Sea where multiple rafting produces thick sea ice features floes override one another multiple times to produce thick sea ice features [Babko et al., 2002A model for the consolidation of rafted sea ice E. Bailey1 , D. L. Feltham2,3 , and P. R. Sammonds1

Feltham, Daniel

97

A model for the consolidation of rafted sea ice E. Bailey,1  

E-Print Network (OSTI)

ice. This process is widespread in the north Caspian Sea, where multiple rafting produces thick sea override one another multiple times to produce thick sea ice features [Babko et al., 2002]. This process observed that as many as four layers of ice were rafted in the southeastern Beaufort Sea to produce a total

Feltham, Daniel

98

An Analysis of Past and Future Changes in the Ice Cover of Two High-Arctic Lakes Based on Synthetic Aperture Radar (SAR) and Landsat Imagery  

E-Print Network (OSTI)

and heat energy between a lake and its surroundings (Adams, 1981). In high-arctic lakes, changes in ice climate data are limited, remote sensing of lake-ice conditions can provide valuable insight into climaticAn Analysis of Past and Future Changes in the Ice Cover of Two High-Arctic Lakes Based on Synthetic

Bradley, Raymond S.

99

Relationship between Hadley circulation and sea ice extent in the Bering Sea  

Science Journals Connector (OSTI)

The linkage between Hadley circulation (HC) and sea ice extent...vice versa. In addition, it is further identified that East Asian-North Pacific-North America teleconnection may play an important role in linking ...

BoTao Zhou; HuiJun Wang

2008-02-01T23:59:59.000Z

100

Streamline Regularization for Large Discontinuous Motion of Sea Ice , C. A. Geiger1  

E-Print Network (OSTI)

Streamline Regularization for Large Discontinuous Motion of Sea Ice M. Thomas1 , C. A. Geiger1 , P the sea ice on the po- lar ocean surfaces serve as thermal regulators for the planet. The variable thickness and dynamic nature of the sea ice is intimately connected with the thermal reg- ulation

Geiger, Cathleen

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


101

Sensitivity of sea ice to physical parameterizations in the GISS global climate model  

E-Print Network (OSTI)

absorbed by the polar regions. Second, sea ice has a strong insulating effect on the under- lying oceanSensitivity of sea ice to physical parameterizations in the GISS global climate model Jiping Liu,1 coupled model is used to investigate the sensitivity of sea ice to each of the following parameterizations

102

Abrupt climate shifts in Greenland due to displacements of the sea ice edge  

E-Print Network (OSTI)

by insulating the atmosphere from the substantial heat capacity of the ocean. When sea ice is absent, the oceanAbrupt climate shifts in Greenland due to displacements of the sea ice edge Camille Li,1 David S that a reduction in sea ice extent in the North Atlantic produces a climatic response consistent with abrupt

Schrag, Daniel

103

Can North Atlantic Sea Ice Anomalies Account for DansgaardOeschger Climate Signals?*  

E-Print Network (OSTI)

. The presence of sea ice lowers surface temperature by insulating the atmosphere from the ocean heat reservoirCan North Atlantic Sea Ice Anomalies Account for Dansgaard­Oeschger Climate Signals?* CAMILLE LI 2010) ABSTRACT North Atlantic sea ice anomalies are thought to play an important role in the abrupt

Battisti, David

104

The influence of ocean flow on newly forming sea ice Daniel L. Feltham  

E-Print Network (OSTI)

-precipitation cycle in the remainder of the world's oceans [Aagaard and Carmack, 1994]. Sea ice insulates the oceanThe influence of ocean flow on newly forming sea ice Daniel L. Feltham Centre for Polar Observation sensitive to the growth and decay of sea ice and the interaction between the heat and salt fields

Feltham, Daniel

105

ERDC/CRRELTR-06-16 Propagation of Uncertainties in Sea Ice  

E-Print Network (OSTI)

of the global heat bal- ance. This capability is attributed to the unique location of sea ice at the interface in the polar region has precipitated increased efforts to measure sea ice thickness as an index for global heatERDC/CRRELTR-06-16 Propagation of Uncertainties in Sea Ice Thickness Calculations from Basin

Geiger, Cathleen

106

ASSESSING THE UTILITY OF MODIS FOR MONITORING SNOW AND SEA ICE EXTENT  

E-Print Network (OSTI)

has begun. For the first time daily, global maps of snow cover and sea ice extent are being produced, global maps of snow cover and sea ice extent are being produced in a fully automated fashion from spaceASSESSING THE UTILITY OF MODIS FOR MONITORING SNOW AND SEA ICE EXTENT G. Scharfen, S. Khalsa U

Oldenburg, Carl von Ossietzky Universität

107

Deep-Sea Research II 52 (2005) 32813302 Sediment transport by sea ice in the Chukchi and Beaufort Seas  

E-Print Network (OSTI)

resuspension and subsequent ice entrainment (420 m for the Chukchi Sea). Sediment loads averaged at 128 t km�2 deep for resuspension and entrainment) is at minimum 4 � 106 t in the sampling area and is estimated

Rigor, Ignatius G.

108

Political risks of hydrocarbon deposit development in the Arctic seas of the Russian Federation  

Science Journals Connector (OSTI)

Nowadays the process of Arctic development has a long-term international cooperation character. Economic and geopolitical interests of both arctic and non-arctic countries meet in the region. Apart from resource development issues, there are problems concerning security, sustainable development and some others issues conditioned by climate and geographical characteristics of the region. Strategic analysis of political risks for the Russian Federation is carried out. The analysis reveals that political risks of hydrocarbon deposits development in the RF arctic seas appear as lack of coordination with arctic countries in solving key regional problems, failure to follow international agreements. Such inconsistency may lead to political risks, which results in strained situation in the region.

Y A Bolsunovskaya; G Yu Boyarko; L M Bolsunovskaya

2014-01-01T23:59:59.000Z

109

Holocene dynamics of the Arctic's largest ice shelf  

Science Journals Connector (OSTI)

...24 . 27 Johnsen SF ( 2001 ) Oxygen isotope and paleotemperature records from six Greenland ice-core stations: Camp Century, Dye-3, GRIP, GISP2, Renland and NorthGRIP . J Quat Sci 16 : 299 – 307 . 28 Trees CC Clarke DK Bidigare RR Ondrusek ME Mueller...

Dermot Antoniades; Pierre Francus; Reinhard Pienitz; Guillaume St-Onge; Warwick F. Vincent

2011-01-01T23:59:59.000Z

110

2012 Changing Arctic Ocean 506E/497E -Lecture 5 -Woodgate The Bering Sea/Bering Strait Relationship  

E-Print Network (OSTI)

Atlantic waters) form a cold (halocline) layer, which insulates the ice from the warm Atlantic water waters) form a cold (halocline) layer, which insulates the ice from the warm Atlantic water beneath 20% 50% The role of Pacific waters in the Arctic Implicated in the seasonal melt-back of ice

Washington at Seattle, University of

111

Simulating mixed-phase Arctic stratus clouds: sensitivity to ice initiation mechanisms  

SciTech Connect

The importance of Arctic mixed-phase clouds on radiation and the Arctic climate is well known. However, the development of mixed-phase cloud parameterization for use in large scale models is limited by lack of both related observations and numerical studies using multidimensional models with advanced microphysics that provide the basis for understanding the relative importance of different microphysical processes that take place in mixed-phase clouds. To improve the representation of mixed-phase cloud processes in the GISS GCM we use the GISS single-column model coupled to a bin resolved microphysics (BRM) scheme that was specially designed to simulate mixed-phase clouds and aerosol-cloud interactions. Using this model with the microphysical measurements obtained from the DOE ARM Mixed-Phase Arctic Cloud Experiment (MPACE) campaign in October 2004 at the North Slope of Alaska, we investigate the effect of ice initiation processes and Bergeron-Findeisen process (BFP) on glaciation time and longevity of single-layer stratiform mixed-phase clouds. We focus on observations taken during 9th-10th October, which indicated the presence of a single-layer mixed-phase clouds. We performed several sets of 12-h simulations to examine model sensitivity to different ice initiation mechanisms and evaluate model output (hydrometeors concentrations, contents, effective radii, precipitation fluxes, and radar reflectivity) against measurements from the MPACE Intensive Observing Period. Overall, the model qualitatively simulates ice crystal concentration and hydrometeors content, but it fails to predict quantitatively the effective radii of ice particles and their vertical profiles. In particular, the ice effective radii are overestimated by at least 50%. However, using the same definition as used for observations, the effective radii simulated and that observed were more comparable. We find that for the single-layer stratiform mixed-phase clouds simulated, process of ice phase initiation due to freezing of supercooled water in both saturated and undersaturated (w.r.t. water) environments is as important as primary ice crystal origination from water vapor. We also find that the BFP is a process mainly responsible for the rates of glaciation of simulated clouds. These glaciation rates cannot be adequately represented by a water-ice saturation adjustment scheme that only depends on temperature and liquid and solid hydrometeors contents as is widely used in bulk microphysics schemes and are better represented by processes that also account for supersaturation changes as the hydrometeors grow.

Sednev, Igor; Sednev, I.; Menon, S.; McFarquhar, G.

2008-02-18T23:59:59.000Z

112

Simulating mixed-phase Arctic stratus clouds: Sensitivity to ice initiationmechanisms  

SciTech Connect

The importance of Arctic mixed-phase clouds on radiation and the Arctic climate is well known. However, the development of mixed-phase cloud parameterization for use in large scale models is limited by lack of both related observations and numerical studies using multidimensional models with advanced microphysics that provide the basis for understanding the relative importance of different microphysical processes that take place in mixed-phase clouds. To improve the representation of mixed-phase cloud processes in the GISS GCM we use the GISS single-column model coupled to a bin resolved microphysics (BRM) scheme that was specially designed to simulate mixed-phase clouds and aerosol-cloud interactions. Using this model with the microphysical measurements obtained from the DOE ARM Mixed-Phase Arctic Cloud Experiment (MPACE) campaign in October 2004 at the North Slope of Alaska, we investigate the effect of ice initiation processes and Bergeron-Findeisen process (BFP) on glaciation time and longevity of single-layer stratiform mixed-phase clouds. We focus on observations taken during October 9th-10th, which indicated the presence of a single-layer mixed-phase clouds. We performed several sets of 12-hour simulations to examine model sensitivity to different ice initiation mechanisms and evaluate model output (hydrometeors concentrations, contents, effective radii, precipitation fluxes, and radar reflectivity) against measurements from the MPACE Intensive Observing Period. Overall, the model qualitatively simulates ice crystal concentration and hydrometeors content, but it fails to predict quantitatively the effective radii of ice particles and their vertical profiles. In particular, the ice effective radii are overestimated by at least 50%. However, using the same definition as used for observations, the effective radii simulated and that observed were more comparable. We find that for the single-layer stratiform mixed-phase clouds simulated, process of ice phase initiation due to freezing of supercooled water in both saturated and subsaturated (w.r.t. water) environments is as important as primary ice crystal origination from water vapor. We also find that the BFP is a process mainly responsible for the rates of glaciation of simulated clouds. These glaciation rates cannot be adequately represented by a water-ice saturation adjustment scheme that only depends on temperature and liquid and solid hydrometeors contents as is widely used in bulk microphysics schemes and are better represented by processes that also account for supersaturation changes as the hydrometeors grow.

Sednev, I.; Menon, S.; McFarquhar, G.

2009-04-10T23:59:59.000Z

113

Figure 1. Recurrent modular network architecture Recurrent modular network architecture for sea ice  

E-Print Network (OSTI)

). Classification of sea ice in MIZ is important for navigation in these regions and for accurate evaluation of heatFigure 1. Recurrent modular network architecture Recurrent modular network architecture for sea ice classification in the Marginal Ice Zone using ERS SAR images Andrey V. Bogdanov1a , Marc Toussaint1b , Stein

Toussaint, Marc

114

Response of the Northern Hemisphere sea ice to greenhouse forcing in a global climate model  

E-Print Network (OSTI)

in summer, in part because of the reductions in ice cover and thickness that insulate the winter atmosphereResponse of the Northern Hemisphere sea ice to greenhouse forcing in a global climate model Larissa warming of about 4³C for doubled CO2. Enhanced warming is found at higher latitudes near sea-ice margins

115

NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004  

E-Print Network (OSTI)

NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004: Part I. Database of the Barents, Kara, and Information Service #12;World Data Center for Oceanography, Silver Spring International Ocean Atlas and Information Series, Volume 9 NOAA Atlas NESDIS 58 2004: I

116

Summer and early-fall sea-ice concentration in the Ross Sea: comparison of in situ ASPeCt observations and satellite passive  

E-Print Network (OSTI)

channels and techniques to produce the total sea-ice concentration. Some work has been done to validateSummer and early-fall sea-ice concentration in the Ross Sea: comparison of in situ ASPe-mail: knuthma@clarkson.edu 2 118 West Castle Lane, San Antonio, TX 78213, USA ABSTRACT. Sea-ice conditions were

Texas at San Antonio, University of

117

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 43, NO. 3, MARCH 2005 647 Sea Ice Mapping Method for SeaWinds  

E-Print Network (OSTI)

, polar sea ice is an excellent thermal insulator and physical barrier to the exchange of gases betweenIEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 43, NO. 3, MARCH 2005 647 Sea Ice Mapping Abstract--A sea ice mapping algorithm for SeaWinds is devel- oped that incorporates statistical and spatial

Long, David G.

118

The Role of Oceans and Sea Ice in Abrupt Transitions between Multiple Climate States  

E-Print Network (OSTI)

The coupled climate dynamics underlying large, rapid, and potentially irreversible changes in ice cover are studied. A global atmosphere–ocean–sea ice general circulation model with idealized aquaplanet geometry is forced ...

Rose, Brian E. J.

119

Analysis of Antarctic Sea Ice Thickness: A Newly Created Database for 2000-2009  

E-Print Network (OSTI)

Observations of Antarctic sea ice thickness are sporadic in space and time, hindering knowledge of its variability. A proxy based on stage of development data from the National Ice Center (NIC) weekly operational charts is used to create a high...

Morgan, Benjamin Patrick

2012-10-19T23:59:59.000Z

120

SciTech Connect: Predicting Land-Ice Retreat and Sea-Level Rise...  

NLE Websites -- All DOE Office Websites (Extended Search)

Conference: Predicting Land-Ice Retreat and Sea-Level Rise with the Community Earth System Model Citation Details In-Document Search Title: Predicting Land-Ice Retreat and...

Note: This page contains sample records for the topic "arctic sea ice" 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

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, Smoluchowski Coagulation Models Of Sea Ice Thickness1  

E-Print Network (OSTI)

and insulating properties. Inclusion of a dynamic sea-ice component in General25 Circulation Models (GCMs Of Sea Ice Thickness1 Distribution Dynamics2 D. Godlovitch,1 R. Illner,2 and A. Monahan,1 D. Godlovitch ICE Abstract. Sea ice thickness distributions display a ubiquitous exponential de-3 crease

Illner, Reinhard

122

Dependence of NAO variability on coupling with sea ice Courtenay Strong Gudrun Magnusdottir  

E-Print Network (OSTI)

Dependence of NAO variability on coupling with sea ice Courtenay Strong · Gudrun Magnusdottir N) is shown to depend on its coupling with area-averaged sea ice concentration anomalies whereby positive N tends to produce negative B, which in turn forces negative N. The effects

Magnusdottir, Gudrun

123

ARTICLE IN PRESS Southern Ocean sea ice and radiocarbon ages of  

E-Print Network (OSTI)

ARTICLE IN PRESS Southern Ocean sea ice and radiocarbon ages of glacial bottom waters A. Schmittner of glacial ocean circulation and radiocarbon distribution I show that increased sea ice cover over-day and one glacial, tuned to have similar rates of North Atlantic Deep Water formation are used. Insulation

Schmittner, Andreas

124

Electromagnetic and physical properties of sea ice formed in the presence of wave action  

E-Print Network (OSTI)

Estimating the magnitude of brine flux to the upper ocean requires an ability to assess the dynamics of the formation of sea ice in a region. Brine storage and rate of expulsion is determined by the environmental conditions under which the sea ice...

Onstott, R. G.; Gogineni, Sivaprasad; Gow, A. J.; Grenfell, T. C.; Jezek, K. C.; Perovich, D. K.; Swift, C. T.

1998-09-01T23:59:59.000Z

125

HIGH RESOLUTION MOTION ESTIMATION OF SEA ICE USING AN IMPLICIT QUAD-TREE APPROACH  

E-Print Network (OSTI)

and dynamic nature of sea ice is intimately connected with the thermal regulation of planetary heat transferHIGH RESOLUTION MOTION ESTIMATION OF SEA ICE USING AN IMPLICIT QUAD-TREE APPROACH M. Thomas, C. A data products. Since the motion is extracted from the image data iteratively, the estimated field

Geiger, Cathleen

126

The Transient Atmospheric Circulation Response to North Atlantic SST and Sea Ice Anomalies  

E-Print Network (OSTI)

The Transient Atmospheric Circulation Response to North Atlantic SST and Sea Ice Anomalies CLARA of the wintertime atmospheric circu- lation response to imposed patterns of SST and sea ice extent anomalies may produce different responses to the same SST anomaly depend- ing on their simulation

Hurrell, James

127

Discrete-element model for the interaction between ocean waves and sea ice  

SciTech Connect

We present a discrete element method (DEM) model to simulate the mechanical behavior of sea ice in response to ocean waves. The wave/ice interaction can potentially lead to the fracture and fragmentation of sea ice depending on the wave amplitude and period. The fracture behavior of sea ice is explicitly modeled by a DEM method, where sea ice is modeled by densely packed spherical particles with finite size. These particles are bonded together at their contact points through mechanical bonds that can sustain both tensile & compressive forces and moments. Fracturing can be naturally represented by the sequential breaking of mechanical bonds. For a given amplitude and period of incident ocean wave, the model provides information for the spatial distribution and time evolution of stress and micro-fractures and the fragment size distribution. We demonstrate that the fraction of broken bonds,, increases with increasing wave amplitude. In contrast, the ice fragment size decreases with increasing amplitude.

Xu, Zhijie; Tartakovsky, Alexandre M.; Pan, Wenxiao

2012-01-05T23:59:59.000Z

128

Physical Controls on Ice Variability in the Bering Sea /  

E-Print Network (OSTI)

region. The model also produces less ice near much of thewinds (Figure 3.13c,d) produce more ice growth and more iceThe model produces variations in total ice area anomalies

Li, Linghan

2013-01-01T23:59:59.000Z

129

ERA-40 SST and Sea Ice Concentration Data  

SciTech Connect

The lower boundary condition of sea surface temperature (SST) and sea-ice concentration (sic) is a critical forcing of the lower frequencies in multi-decadal global atmospheric reanalyses such as ERA-40. Partly in response to the ERA-40 project, new SST/sic data sets have been developed that are considerably improved over those available to the first-generation reanalyses. This paper documents the input SST/sic data sets and the processing that created the daily SST/sic specification for the ERA-40 period 1956-2001. The source data are: (1) the monthly mean HadISST data set from the UKMO Hadley Centre for 1956-1981; and (2) the weekly NCEP 2DVAR data for 1982-present. Both data sets are reanalyses of satellite and conventional SST/sic observations. The principal reason for the higher quality of these source data sets is the use of a common consensus sic and a common sic-SST relationship in the sea ice margins. The use of a common sic resulted in a very smooth transition between HadISST and NCEP 2DVAR, despite differences in data assimilation techniques and monthly versus weekly analyses. No special action was required to insure consistency at the transition unlike as was necessary for the AMIP II experiment (Fiorino, 1997). The only special processing was application of the AMIP II mid-month calculation (Taylor et al., 2000) for the interpolation of monthly mean data to daily values. This scheme insures that the monthly mean of the daily-interpolated data is nearly identical to the input monthly mean. Detailed comparisons of the SST and sic during the HadISST-NCEP transition, and other long time series, are given. We also compare the NCEP 2DVAR (circa 2000) to a newer version of the OISST (V2, circa 2001) and demonstrate that the small differences should have no impact on the ERA-40 atmosphere reanalyses.

Fiorino, M

2001-08-27T23:59:59.000Z

130

Dynamics of the sea ice edge in Davis Strait M.P. Heide-Jrgensen a,, H. Stern b  

E-Print Network (OSTI)

on the banks of West Greenland, sea ice produced further north in Baffin Bay was advected to the banks as shownAuthor's personal copy Dynamics of the sea ice edge in Davis Strait M.P. Heide-Jørgensen a,, H October 2006; accepted 27 October 2006 Available online 22 December 2006 Abstract Sea ice concentration

Laidre, Kristin L.

131

Arctic melt ponds and bifurcations in the climate system  

E-Print Network (OSTI)

Understanding how sea ice melts is critical to climate projections. In the Arctic, melt ponds that develop on the surface of sea ice floes during the late spring and summer largely determine their albedo $-$ a key parameter in climate modeling. Here we explore the possibility of a simple sea ice climate model passing through a bifurcation point $-$ an irreversible critical threshold as the system warms, by incorporating geometric information about melt pond evolution. This study is based on a nonlinear phase transition model for melt ponds, and bifurcation analysis of a simple climate model with ice - albedo feedback as the key mechanism driving the system to a potential bifurcation point.

Sudakov, Ivan; Golden, Kenneth M

2014-01-01T23:59:59.000Z

132

Collaborative Research: Towards Advanced Understanding and Predictive Capability of Climate Change in the Arctic using a High-Resolution Regional Arctic Climate System Model  

SciTech Connect

Primary activities are reported in these areas: climate system component studies via one-way coupling experiments; development of the Regional Arctic Climate System Model (RACM); and physical feedback studies focusing on changes in Arctic sea ice using the fully coupled model.

Lettenmaier, Dennis P

2013-04-08T23:59:59.000Z

133

A New Model to Construct Ice Stream Surface Elevation Profiles and Calculate Contributions to Sea-Level Rise  

E-Print Network (OSTI)

to 21st-Century Sea-Level Rise. Science, 321, 1340; DOI:in the Face of Sea-Level Rise: A Hybrid Modeling Approachof ice sheets to sea-level rise. Bibliography Alcamo, J. et

Adachi, Yosuke

2012-01-01T23:59:59.000Z

134

Radionuclides in the Arctic seas from the former Soviet Union: Potential health and ecological risks  

SciTech Connect

The primary goal of the assessment reported here is to evaluate the health and environmental threat to coastal Alaska posed by radioactive-waste dumping in the Arctic and Northwest Pacific Oceans by the FSU. In particular, the FSU discarded 16 nuclear reactors from submarines and an icebreaker in the Kara Sea near the island of Novaya Zemlya, of which 6 contained spent nuclear fuel (SNF); disposed of liquid and solid wastes in the Sea of Japan; lost a {sup 90}Sr-powered radioisotope thermoelectric generator at sea in the Sea of Okhotsk; and disposed of liquid wastes at several sites in the Pacific Ocean, east of the Kamchatka Peninsula. In addition to these known sources in the oceans, the RAIG evaluated FSU waste-disposal practices at inland weapons-development sites that have contaminated major rivers flowing into the Arctic Ocean. The RAIG evaluated these sources for the potential for release to the environment, transport, and impact to Alaskan ecosystems and peoples through a variety of scenarios, including a worst-case total instantaneous and simultaneous release of the sources under investigation. The risk-assessment process described in this report is applicable to and can be used by other circumpolar countries, with the addition of information about specific ecosystems and human life-styles. They can use the ANWAP risk-assessment framework and approach used by ONR to establish potential doses for Alaska, but add their own specific data sets about human and ecological factors. The ANWAP risk assessment addresses the following Russian wastes, media, and receptors: dumped nuclear submarines and icebreaker in Kara Sea--marine pathways; solid reactor parts in Sea of Japan and Pacific Ocean--marine pathways; thermoelectric generator in Sea of Okhotsk--marine pathways; current known aqueous wastes in Mayak reservoirs and Asanov Marshes--riverine to marine pathways; and Alaska as receptor. For these waste and source terms addressed, other pathways, such as atmospheric transport, could be considered under future-funded research efforts for impacts to Alaska. The ANWAP risk assessment does not address the following wastes, media, and receptors: radioactive sources in Alaska (except to add perspective for Russian source term); radioactive wastes associated with Russian naval military operations and decommissioning; Russian production reactor and spent-fuel reprocessing facilities nonaqueous source terms; atmospheric, terrestrial and nonaqueous pathways; and dose calculations for any circumpolar locality other than Alaska. These other, potentially serious sources of radioactivity to the Arctic environment, while outside the scope of the current ANWAP mandate, should be considered for future funding research efforts.

Layton, D W; Edson, R; Varela, M; Napier, B

1999-11-15T23:59:59.000Z

135

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 42, NO. 7, JULY 2004 1433 Automatic Detection and Validity of the Sea-Ice  

E-Print Network (OSTI)

by insulating the ocean from the atmosphere and increasing the surface albedo. Sea-ice Manuscript received Detection and Validity of the Sea-Ice Edge: An Application of Enhanced-Resolution QuikScat/SeaWinds Data Abstract--Sea-ice edge detection is an essential task at the different national ice services to secure

Long, David G.

136

MFV Korenbloem LT 535 sea trials no1: ICES area VIIe  

E-Print Network (OSTI)

MFV Korenbloem LT 535 sea trials no1: ICES area VIIe the results Pete, the Skipper #12;the `new SWFPO #12;discarded fish (all species) reduced by 60% in the Korenbloem new net 0 1000 2000 3000 4000

137

New perspectives on observed and simulated late Antarctic sea ice extent trends using optimal fingerprinting techniques  

Science Journals Connector (OSTI)

Using optimal fingerprinting techniques, we performed a detection analysis to determine whether observed trends in Southern Ocean sea ice extent since 1979 are outside the expected range of natural variability. Consistent with previous studies, we ...

Will Hobbs; Nathaniel L. Bindoff; Marilyn N. Raphael

138

A broad spectral, interdisciplinary investigation of the electromagnetic properties of sea ice  

E-Print Network (OSTI)

in laboratory, field, and modeling studies that spanned the EM spectrum from radio to ultraviolet wavelengths. An interdisciplinary approach that brought together sea ice physicists, remote-sensing experts tin EM measurements), and forward and inverse modelers...

Jezek, K. C.; Perovich, D. K.; Golden, K. M.; Luther, C.; Barber, D. G.; Gogineni, Sivaprasad; Grenfell, T. C.; Jordan, A. K.; Mobley, C. D.; Nghiem, S. V.; Onstott, R. G.

1998-09-01T23:59:59.000Z

139

Oceanic control of the sea ice edge and multiple equilibria in the climate system  

E-Print Network (OSTI)

I study fundamental mechanisms of atmosphere-ocean-sea ice interaction. Hierarchies of idealized models are invoked to argue that multiple equilibria and abrupt change are robust features of the climate system. The main ...

Rose, Brian E. J. (Brian Edward James)

2010-01-01T23:59:59.000Z

140

E-Print Network 3.0 - atmosphere-sea ice-ocean system Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

sphere-sea-ice-ocean... .01.015 12;are included within the latest generation of Earth System Models in order to allow more direct... for Space Studies and Center for Climate...

Note: This page contains sample records for the topic "arctic sea ice" 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

A Fiber Optic Spectrometry System for Measuring Irradiance Distributions in Sea Ice Environments  

Science Journals Connector (OSTI)

A fiber optic–based spectrometry system was developed to enable automated, long-term measurements of spectral irradiance in sea ice environments. This system utilizes a single spectrometer module that measures the irradiance transmitted by ...

Hangzhou Wang; Ying Chen; Hong Song; Samuel R. Laney

2014-12-01T23:59:59.000Z

142

High-Latitude Ocean and Sea Ice Surface Fluxes: Challenges for Climate Research Mark A. Bourassa1  

E-Print Network (OSTI)

, the Wilkins Ice Shelf collapsed equally quickly (Scambos et al. 2009). Ocean heat content is rising rapidlyHigh-Latitude Ocean and Sea Ice Surface Fluxes: Challenges for Climate Research Mark A. Bourassa1 conditions for the measurement and estimation of air­sea and ice fluxes, limiting understanding of related

Gille, Sarah T.

143

High-Latitude Ocean and Sea Ice Surface Fluxes: Challenges for Climate Research1 Mark A. Bourassa1  

E-Print Network (OSTI)

), and in 2008, the Wilkins Ice Shelf51 collapsed equally quickly (Scambos et al. 2009). Ocean heat content1 High-Latitude Ocean and Sea Ice Surface Fluxes: Challenges for Climate Research1 2 Mark A conditions for the measurement and estimation of air­27 sea and ice fluxes, limiting understanding of related

Gille, Sarah T.

144

High-Latitude Ocean and Sea Ice Surface Fluxes: Requirements and Challenges for Climate Mark Bourassa1  

E-Print Network (OSTI)

temperatures, seasonal sea ice, and the remoteness of the regions all conspire to make observations difficult latitudes - the vertical exchanges of heat, momentum and material between the ocean, atmosphere and ice1 High-Latitude Ocean and Sea Ice Surface Fluxes: Requirements and Challenges for Climate Research

Gille, Sarah T.

145

The sensitivity of the Late Saalian (140 ka) and LGM (21 ka) Eurasian ice sheets to sea surface conditions  

E-Print Network (OSTI)

to the climatic cooling effect from the large ice sheet topography. Late Saalian SST are simulated using an AGCM-hemispheric asymmetry caused by the larger ice-albedo feedback, cooling climate. The resulting Late Saalian ice sheetThe sensitivity of the Late Saalian (140 ka) and LGM (21 ka) Eurasian ice sheets to sea surface

Jakobsson, Martin

146

Development of Exhibit on Arctic Climate Change Called The Arctic: A Friend Acting Strangely Exhibition  

SciTech Connect

The exhibition, The Arctic: A Friend Acting Strangely, was developed at the Smithsonian Institution’s National Museum of Natural History (NMNH) as a part of the museum’s Forces of Change exhibit series on global change. It opened to the public in Spring 2006, in conjunction with another Forces of Change exhibit on the Earth’s atmosphere called Change Is in the Air. The exhibit was a 2000 square-foot presentation that explored the forces and consequences of the changing Arctic as documented by scientists and native residents alike. Native peoples of the Arctic have always lived with year-to-year fluctuations in weather and ice conditions. In recent decades, they have witnessed that the climate has become unpredictable, the land and sea unfamiliar. An elder in Arctic Canada recently described the weather as uggianaqtuq —an Inuit word that can suggest strange, unexpected behavior, sometimes described as that of “a friend acting strangely.” Scientists too have been documenting dramatic changes in the Arctic. Air temperatures have warmed over most—though not all—of the Arctic since the 1950s; Arctic precipitation may have increased by as much as 8%; seasonal melting of the Greenland Ice Sheet has increased on average by 16% since 1979; polar-orbiting satellites have measured a 15¬–20% decline in sea ice extent since the 1970s; aircraft reconnaissance and ship observations show a steady decrease in sea ice since the 1950s. In response to this warming, plant distributions have begun to shift and animals are changing their migration routes. Some of these changes may have beneficial effects while others may bring hardship or have costly implications. And, many scientists consider arctic change to be a ‘bell-weather’ for large-scale changes in other regions of the world. The exhibition included text, photos artifacts, hands-on interactives and other exhibitry that illustrated the changes being documented by indigenous people and scientists alike.

Stauffer, Barbara W.

2006-04-01T23:59:59.000Z

147

Tide Model Accuracy in the Amundsen Sea, Antarctica, from InSAR Observations of Ice  

E-Print Network (OSTI)

Tide Model Accuracy in the Amundsen Sea, Antarctica, from InSAR Observations of Ice Shelf Motion Sea Sector of West Antarctica. · Tide model accuracy in this remote region is poorly constrained, yet tide models contribute to simulations of ocean heat transfer, and to the removal of unwanted tidal

148

A preliminary evaluation of the impact of assimilating AVHRR data on sea ice concentration analyses  

Science Journals Connector (OSTI)

In this paper a method to assimilate data from a visual/infrared (VIS/IR) sensor for the purpose of estimating sea ice concentration is investigated. A novel forward model is presented which allows the reflectances and brightness temperatures from the VIS/IR sensor to be assimilated. The VIS/IR data are assimilated in combination with ice concentration retrievals from a passive microwave sensor using 3D variational data assimilation into a 5 km × 5 km grid of sea ice concentrations. Results are compared with those from an experiment which assimilates only the ice concentration retrievals. It is found that the VIS/IR data have a positive impact as ice on the sea ice state through comparison with independent data. The proportion of points correctly identified asice or open water increased in each region studied by including the AVHRR data, with the largest increase being from 0.921 to 0.935. This positive impact is due to the higher resolution of the VIS/IR data as compared with the passive microwave data, that improves the representation of open water in bays and coastal polynyas. There is however, a degradation in the accuracy of the sea ice state in some regions of the analysis from assimilating the VIS/IR data. Possible ways of improving the impact from VIS/IR data are discussed.

K. Andrea Scott; Mark Buehner; Alain Caya; Tom Carrieres

2013-01-01T23:59:59.000Z

149

Contribution to Thomas D. & G. S. Dieckmann (eds.): SEA ICE -AN INTRODUCTION TO ITS PHYSICS, BIOLOGY , CHEMISTRY AND GEOLOGY, Blackwell Science, London, 2003, pp. 22-81  

E-Print Network (OSTI)

1 Contribution to Thomas D. & G. S. Dieckmann (eds.): SEA ICE - AN INTRODUCTION TO ITS PHYSICS to the macroscopic to the regional scale: Growth, microstructure and properties of sea ice1 Hajo Eicken 2 of the importance of sea ice over a wide range of scales in time and space. Considering the degree to which the ice

Eicken, Hajo

150

Sources and sinks of carbon dioxide in the Arctic regions  

SciTech Connect

The data base required to adequately ascertain seasonal source and sink strengths in the arctic regions is difficult to obtain. However, there are now a reasonable quantity of data for this polar region to estimate sources and sinks within the Arctic which may contribute significantly to the annual tropospheric CO/sub 2/ concentration fluctuation. The sea-ice-air and the sea-air interfaces account for most of the contribution to the sources and sinks for carbon dioxide. Although the arctic and subarctic region is small in extent, it certainly is not impervious and ice sealed. Our estimate, based on historical data and current research, indicates that the Arctic, which is about 4% of the earth's surface, is an annual net sink for approx. 10/sup 15/ g CO/sub 2/ accounting for an equivalent of approx. 3% of the annual anthropogenic contribution of CO/sub 2/ to the troposphere.

Gosink, T. A.; Kelley, J. J.

1982-01-01T23:59:59.000Z

151

Designing for effective stationkeeping in ice  

E-Print Network (OSTI)

and intervention vessels for Arctic oil and gas. #12;2. An effective Ice Management system · Ice Management for the CIVArctic vessel. - Comparison with the ice model tests carried out in the Aker Arctic ice tank in May 2011

Nørvåg, Kjetil

152

Predicting Land-Ice Retreat and Sea-Level Rise with the Community Earth System Model  

SciTech Connect

Coastal stakeholders need defensible predictions of 21st century sea-level rise (SLR). IPCC assessments suggest 21st century SLR of {approx}0.5 m under aggressive emission scenarios. Semi-empirical models project SLR of {approx}1 m or more by 2100. Although some sea-level contributions are fairly well constrained by models, others are highly uncertain. Recent studies suggest a potential large contribution ({approx}0.5 m/century) from the marine-based West Antarctic Ice Sheet, linked to changes in Southern Ocean wind stress. To assess the likelihood of fast retreat of marine ice sheets, we need coupled ice-sheet/ocean models that do not yet exist (but are well under way). CESM is uniquely positioned to provide integrated, physics based sea-level predictions.

Lipscomb, William [Los Alamos National Laboratory

2012-06-19T23:59:59.000Z

153

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 52, NO. 4, APRIL 2014 2149 Mitigation of Sea Ice Contamination  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 52, NO. 4, APRIL 2014 2149 Mitigation such as the Oceansat-2 scatterometer. Index Terms--QuikCSAT, remote sensing, scatterometry, sea ice, wind, wind, atmospheric heat flow, ocean currents, and possibly sea ice formation. Satellite scat- terometry enables daily

Long, David G.

154

High latitudes present extreme conditions for the measurement and estimation of airsea and ice fluxes, limiting understanding of related physical processes and  

E-Print Network (OSTI)

High latitudes present extreme conditions for the measurement and estimation of air­sea and ice of the Earth's climate. HigH-LatitudE OcEan and SEa icE SurfacE fLuxES: cHaLLEngES fOr cLimatE rESEarcH by Mark change can manifest itself in astonishing ways. Arctic sea ice extent at the end of the melt season

Renfrew, Ian

155

The Rate-and State-Dependence of Sea Ice Friction Ben Lishman, Peter Sammonds, Daniel Feltham, and Alex Wilchinsky  

E-Print Network (OSTI)

for further work. 2. Experimental programme To produce a quantitative constitutive description of ice frictionPOAC09-66 The Rate- and State- Dependence of Sea Ice Friction Ben Lishman, Peter Sammonds, Daniel Feltham, and Alex Wilchinsky Rock and Ice Physics Laboratory, and Centre for Polar Observation

Feltham, Daniel

156

High-Latitude Ocean and Sea Ice Surface Fluxes: Challenges for Climate Research1 Mark A. Bourassa1  

E-Print Network (OSTI)

), and in 2008, the Wilkins Ice Shelf51 collapsed equally quickly (Scambos et al. 2009). Ocean heat content1 High-Latitude Ocean and Sea Ice Surface Fluxes: Challenges for Climate Research1 2 Mark A-latitude surface fluxes will require close collaboration among meteorologists,33 oceanographers, ice physicists

Gille, Sarah T.

157

Polynyas, Leads in the Southern Ocean -Encyclopedia of the Antarctic The sea ice surrounding Antarctica and covering much of the Southern Ocean is far from  

E-Print Network (OSTI)

Polynyas, Leads in the Southern Ocean - Encyclopedia of the Antarctic The sea ice surrounding with patches of open water and cracks. Larger, persistent areas of open water within the sea ice pack are called polynyas (a word of Russian origin); while linear cracks in the sea ice are called leads

Renfrew, Ian

158

Generated using version 3.0 of the official AMS LATEX template Can North Atlantic sea ice anomalies account for Dansgaard-Oeschger climate signals?  

E-Print Network (OSTI)

of sea ice lowers surface temperature by insulating the atmosphere from the ocean heat reservoirGenerated using version 3.0 of the official AMS LATEX template Can North Atlantic sea ice anomalies. 1 #12;ABSTRACT North Atlantic sea ice anomalies are thought to play an important role in the abrupt

Battisti, David

159

In the Greenland and Norwegian Seas, sea ice advanced farther south and persisted  

E-Print Network (OSTI)

at high latitudes, ice-age conditions were not so different from those of today, with global cooling was that the larger area of snow and ice produced a cooling feedback through increased reflection of solarenergy, which found considerable ice-age cooling off Peru and along the Equator10 . Although the aver- age

Kurapov, Alexander

160

Desalination processes of sea ice revisited Dirk Notz1,2  

E-Print Network (OSTI)

Desalination processes of sea ice revisited Dirk Notz1,2 and M. Grae Worster1 Received 23 April of salt at the advancing front. Citation: Notz, D., and M. G. Worster (2009), Desalination processes of the possible desalination processes individually, reassessing their rela- tive importance for the loss of salt

Worster, M. Grae

Note: This page contains sample records for the topic "arctic sea ice" 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

Estimating the Contribution of Sea Ice Response to Climate Sensitivity in a Climate Model  

Science Journals Connector (OSTI)

The response of sea ice to climate change affects Earth’s radiative properties in ways that contribute to yet more climate change. Here, a configuration of the Community Earth System Model, version 1.0.4 (CESM 1.0.4), with a slab ocean model and a ...

Ken Caldeira; Ivana Cvijanovic

2014-11-01T23:59:59.000Z

162

Influence of the Sea Ice Thickness Distribution on Polar Climate in CCSM3 MARIKA M. HOLLAND  

E-Print Network (OSTI)

heat transport to changing CO2 levels contributes to different high latitude warming simulations and sea ice which amplify climate change and variability. In increasing atmospheric CO2 scenarios Group MS-B216, Los Alamos National Laboratory, Los Alamos, New Mexico JULIE L. SCHRAMM National Center

163

Grounding-line migration in plan-view marine ice-sheet models: results of the ice2sea MISMIP3d intercomparison  

E-Print Network (OSTI)

Grounding-line migration in plan-view marine ice-sheet models: results of the ice2sea MISMIP3d Wegener Institute for Polar and Marine Research, Bremerhaven, Germany 13 Institut fu¨r Mathematik, Freie Universita¨t Berlin, Berlin, Germany 14 Jet Propulsion Laboratory, California Institute of Technology

Huybrechts, Philippe

164

ARM - What About Melting Polar Ice Caps and Sea Levels?  

NLE Websites -- All DOE Office Websites (Extended Search)

probable) and the seaice interface could retreat to the north. This is likely to cause a rise in sea level (probable), but just how much is uncertain. We could make better...

165

Recent Metal Pollution in Agassiz Ice Cap  

Science Journals Connector (OSTI)

This is probably due to the close proximity and similar elevation of the two areas (Agassiz Ice Cap, Canadian Arctic and Camp Century, northwest Greenland), which are likely subjected to the same polluted air masses. ... Figure 3 shows Pb concentrations covering the past 250 years for three different Arctic areas:? Camp Century, northwest Greenland (dashed line, ref 1); Summit, central Greenland (solid line, ref 8); and Agassiz Ice Cap (star symbols, this work). ... Since Camp Century is lower than Summit (1866 vs 3228 m above sea level) and is expected to receive more pollution, the relative position of the two lines is reasonable, the dashed line being higher than the solid one. ...

V. Cheam; G. Lawson; J. Lechner; R. Desrosiers

1998-11-10T23:59:59.000Z

166

Phase-field theory of brine entrapment in sea ice: Short-time frozen microstructures  

E-Print Network (OSTI)

We analyze the early phase of brine entrapment in sea ice, using a phase field model. This model for a first-order phase transition couples non-conserved order parameter kinetics to salt diffusion. The evolution equations are derived from a Landau-Ginzburg order parameter gradient dynamics together with salinity conservation. The numerical solution of model equations by an exponential time differencing scheme describes the time evolution of phase separation between liquid water with high salinity and the ice phase with low salinity. The numerical solution in one and two dimensions indicates the formation of one dominant wavelength which sets the length scale of short-time frozen structures. A stability analysis provides the phase diagram in terms of two Landau parameters. It is distinguished an uniform ice phase, a homogeneous liquid saline water solution and a phase where solidification structures can be formed. The Landau parameters are extracted from the supercooling and superheating as well as the freezing point temperature of water. With the help of realistic parameters the distribution of brine inclusions is calculated and found in agreement with the measured samples. The size of the ice domains separating regions of concentrated seawater depends on salinity and temperature and corresponds to the size of sea ice platelets obtained from a morphological stability analysis for the solidification of salt water.

Silke Thoms; Bernd Kutschan; Klaus Morawetz

2014-05-01T23:59:59.000Z

167

Projected Changes to the Southern Hemisphere Ocean and Sea Ice in the IPCC AR4 Climate Models  

Science Journals Connector (OSTI)

Fidelity and projected changes in the climate models, used for the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4), are assessed with regard to the Southern Hemisphere extratropical ocean and sea ice systems. While ...

Alexander Sen Gupta; Agus Santoso; Andréa S. Taschetto; Caroline C. Ummenhofer; Jessica Trevena; Matthew H. England

2009-06-01T23:59:59.000Z

168

The Relative Importance of Clouds and Sea Ice for the Solar Energy Budget of the Southern Ocean  

Science Journals Connector (OSTI)

The effects of clouds and sea ice on the solar radiation budget are determined for the Southern Ocean around Antarctica between latitudes 50° and 80°S. Distributions of cloud optical depth are used, together with distributions of surface albedo, ...

Melanie F. Fitzpatrick; Stephen G. Warren

2007-03-01T23:59:59.000Z

169

Phase-field theory of brine entrapment in sea ice: Short-time frozen microstructures  

E-Print Network (OSTI)

We analyze the early phase of brine entrapment in sea ice, using a phase field model. This model for a first-order phase transition couples non-conserved order parameter kinetics to salt diffusion. The evolution equations are derived from a Landau-Ginzburg order parameter gradient dynamics together with salinity conservation. The numerical solution of model equations by an exponential time differencing scheme describes the time evolution of phase separation between liquid water with high salinity and the ice phase with low salinity. The numerical solution in one and two dimensions indicates the formation of one dominant wavelength which sets the length scale of short-time frozen structures. A stability analysis provides the phase diagram in terms of two Landau parameters. It is distinguished an uniform ice phase, a homogeneous liquid saline water solution and a phase where solidification structures can be formed. The Landau parameters are extracted from the supercooling and superheating as well as the freezin...

Thoms, Silke; Morawetz, Klaus

2014-01-01T23:59:59.000Z

170

Reducing spread in climate model projections of a September ice-free Arctic  

Science Journals Connector (OSTI)

...15). Relative to the CMIP3, a more diverse set of model types is included in the CMIP5 (i.e., climate/Earth system models with more interactive components such as atmospheric chemistry, aerosols, dynamic vegetation, ice sheets, and...

Jiping Liu; Mirong Song; Radley M. Horton; Yongyun Hu

2013-01-01T23:59:59.000Z

171

Snowball Earth: A thin-ice solution with flowing sea glaciers David Pollard and James F. Kasting  

E-Print Network (OSTI)

optical properties of sea ice and with the equatorward flow of sea glaciers. Here we use a coupled energy processes beyond the scope of zonal mean energy-balance models may significantly affect the solutions and (2 today's value. This is approximately the value of the solar constant predicted at 600 Myr ago [Gough

172

Carbon dioxide in Arctic and subarctic regions  

SciTech Connect

A three year research project was presented that would define the role of the Arctic ocean, sea ice, tundra, taiga, high latitude ponds and lakes and polar anthropogenic activity on the carbon dioxide content of the atmosphere. Due to the large physical and geographical differences between the two polar regions, a comparison of CO/sub 2/ source and sink strengths of the two areas was proposed. Research opportunities during the first year, particularly those aboard the Swedish icebreaker, YMER, provided additional confirmatory data about the natural source and sink strengths for carbon dioxide in the Arctic regions. As a result, the hypothesis that these natural sources and sinks are strong enough to significantly affect global atmospheric carbon dioxide levels is considerably strengthened. Based on the available data we calculate that the whole Arctic region is a net annual sink for about 1.1 x 10/sup 15/ g of CO/sub 2/, or the equivalent of about 5% of the annual anthropogenic input into the atmosphere. For the second year of this research effort, research on the seasonal sources and sinks of CO/sub 2/ in the Arctic will be continued. Particular attention will be paid to the seasonal sea ice zones during the freeze and thaw periods, and the tundra-taiga regions, also during the freeze and thaw periods.

Gosink, T. A.; Kelley, J. J.

1981-03-01T23:59:59.000Z

173

Predictability of the Barents Sea ice in early winter: Remote effects of oceanic and atmospheric thermal conditions from the North Atlantic  

Science Journals Connector (OSTI)

Predictability of sea ice concentrations (SICs) in the Barents Sea in early winter (November–December) is studied using canonical correlation analysis with atmospheric and ocean anomalies from the NCEP Climate Forecast System Reanalysis (NCEP-CFSR)...

Takuya Nakanowatari; Kazutoshi Sato; Jun Inoue

174

Title: Aerodynamic and Scalar Roughness over Snow and Sea Ice In Monin-Obukhov similarity theory, the aerodynamic roughness, z0, is the artificial height  

E-Print Network (OSTI)

Title: Aerodynamic and Scalar Roughness over Snow and Sea Ice Abstract: In Monin-Obukhov similarity theory, the aerodynamic roughness, z0, is the artificial height above the surface at which the wind speed the theory and measurement of the aerodynamic and scalar roughness lengths over snow and sea ice. The data

175

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, Sea Ice Remote Sensing Using AMSR-E 89 GHz Channels  

E-Print Network (OSTI)

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, Sea Ice Remote Sensing Using AMSR progress in sea ice concentration remote sensing by satellite microwave radiometers has been stimulated models, e.g. the heat flux between ocean and atmosphere, especially near coast- lines and in polynyas. (2

Bremen, Universität

176

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 38, NO. 4, JULY 2000 1843 An Iterative Approach to Multisensor Sea Ice  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 38, NO. 4, JULY 2000 1843 An Iterative play a critical role in the global climate, the remote sensing community has had a keen interest in the variability of polar sea ice characteris- tics. Sea ice influences heat transfer between the warmer ocean

Long, David G.

177

Drilling and operational sounds from an oil production island in the ice-covered Beaufort Sea  

Science Journals Connector (OSTI)

Recordings of sounds underwater and in air and of iceborne vibrations were obtained at Northstar Island an artificial gravel island in the Beaufort Sea near Prudhoe Bay (Alaska). The aim was to document the levels characteristics and range dependence of sounds and vibrations produced by drilling and oil production during the winter when the island was surrounded by shore-fast ice. Drilling produced the highest underwater broadband (10–10?000 Hz) levels (maximum=124 dB re: 1 ?Pa at 1 km) and mainly affected 700–1400 Hz frequencies. In contrast drilling did not increase broadband levels in air or ice relative to levels during other island activities. Production did not increase broadband levels for any of the sensors. In all media broadband levels decreased by ?20 dB/tenfold change in distance. Background levels underwater were reached by 9.4 km during drilling and 3–4 km without. In the air and ice background levels were reached 5–10 km and 2–10 km from Northstar respectively depending on the wind but irrespective of drilling. A comparison of the recorded sounds with harbor and ringed seal audiograms showed that Northstar sounds were probably audible to seals at least intermittently out to ?1.5 km in water and ?5 km in air.

Susanna B. Blackwell; Charles R. Greene Jr.; W. John Richardson

2004-01-01T23:59:59.000Z

178

Impact of declining Arctic sea ice on winter snowfall Jiping Liua,b,1  

E-Print Network (OSTI)

, freezing rain, and cold temperature resulted in disruptions in transport, energy supply, and power of Sciences, Beijing, 100029, China; and c Columbia University Center for Climate Systems Research, New York

179

Leveraging scientific credibility about Arctic sea ice trends in a polarized political environment  

Science Journals Connector (OSTI)

...data in a partisan news source. If she...assimilation (2) is a natural response to reports...those cues that drive the individual to siphon...merits of a summer gas tax holiday...the proposed 2008 gas tax holiday and the fact that news reports not only...

Kathleen Hall Jamieson; Bruce W. Hardy

2014-01-01T23:59:59.000Z

180

Examining Sea Ice in the Southern Ocean Using ArcGIS Tracy L. DeLiberty, Cathleen A. Geiger and Mary D. Lemcke  

E-Print Network (OSTI)

. On the contrary, the southern ice cover modeling results produce conflicting responses in global warming scenariosExamining Sea Ice in the Southern Ocean Using ArcGIS Tracy L. DeLiberty, Cathleen A. Geiger at the University of Delaware, the Australian Antarctic Division, the National Ice Center (NIC), Clarkson University

Geiger, Cathleen

Note: This page contains sample records for the topic "arctic sea ice" 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

The rapid disintegration of Arctic sea ice, like the Ward Hunt Ice Shelf in Canada, is a cause for  

E-Print Network (OSTI)

Change (IPCC), after his speech at the third World Climate Conference in Geneva on Monday. The week-long event is being organized by the World Meteorological Organization (WMO), together with Switzerland technical tools for the crucial United Nations World Climate Conference in December in Copenhagen, Denmark

Stocker, Thomas

182

The dependence of ice microphysics on aerosol concentration in arctic mixed-phase stratus clouds during ISDAC and M-PACE  

SciTech Connect

Cloud and aerosol data acquired by the National Research Council of Canada (NRC) Convair-580 aircraft in, above, and below single-layer arctic stratocumulus cloud during the Indirect and Semi-Direct Aerosol Campaign (ISDAC) in April 2008 were used to test three aerosol indirect effects hypothesized to act in mixed-phase clouds: the riming indirect effect, the glaciation indirect effect, and the cold second indirect effect. The data showed a correlation of R= 0.75 between liquid drop number concentration, Nliq, inside cloud and ambient aerosol number concentration NPCASP below cloud. This, combined with increasing liquid water content LWC with height above cloud base and the nearly constant profile of Nliq, suggested that liquid drops were nucleated from aerosol at cloud base. No strong evidence of a riming indirect effect was observed, but a strong correlation of R = 0.69 between ice crystal number concentration Ni and NPCASP above cloud was noted. Increases in ice nuclei (IN) concentration with NPCASP above cloud combined with the subadiabatic LWC profiles suggest possible mixing of IN from cloud top consistent with the glaciation indirect effect. The higher Nice and lower effective radius rel for the more polluted ISDAC cases compared to data collected in cleaner single-layer stratocumulus conditions during the Mixed-Phase Arctic Cloud Experiment is consistent with the operation of the cold second indirect effect. However, more data in a wider variety of meteorological and surface conditions, with greater variations in aerosol forcing, are required to identify the dominant aerosol forcing mechanisms in mixed-phase arctic clouds.

Jackson, Robert C.; McFarquhar, Greg; Korolev, Alexei; Earle, Michael; Liu, Peter S.; Lawson, R. P.; Brooks, Sarah D.; Wolde, Mengistu; Laskin, Alexander; Freer, Matthew

2012-08-14T23:59:59.000Z

183

Refining Estimates of Polar Ice Volumes during the MIS11 Interglacial Using Sea Level Records from South Africa  

Science Journals Connector (OSTI)

Peak eustatic sea level (ESL), or minimum ice volume, during the protracted marine isotope stage 11 (MIS11) interglacial at ~420 ka remains a matter of contention. A recent study of high-stand markers of MIS11 age from the tectonically stable ...

Florence Chen; Sarah Friedman; Charles G. Gertler; James Looney; Nizhoni O’Connell; Katie Sierks; Jerry X. Mitrovica

2014-12-01T23:59:59.000Z

184

Enhancing the resolution of sea ice in long-term global ocean general circulation model (gcm) integrations  

E-Print Network (OSTI)

Open water in sea ice, such as leads and polynyas, plays a crucial role in determining the formation of deep- and bottom-water, as well as their long-term global properties and circulation. Ocean general circulation models (GCMs) designed...

Kim, Joong Tae

2007-09-17T23:59:59.000Z

185

Hydrohalite in cold sea ice: Laboratory observations of single crystals, surface accumulations, and migration rates under a temperature  

E-Print Network (OSTI)

April 2009; published 17 July 2009. [1] When NaCl precipitates out of a saturated solution, it forms it instead precipitates as the dihydrate ``hydrohalite,'' NaCl Á 2H2O. When sea ice is cooled, hydrohalite begins to precipitate within brine inclusions at about �23°C. In this work, hydrohalite crystals

Warren, Stephen

186

E-Print Network 3.0 - arctic climate change Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

- 2 THE NEW ARCTIC Climate change being observed most dramatically... Spill Arctic weather or ice conditions can suddenly change - The inexperienced will certainly...

187

E-Print Network 3.0 - arctic climate system Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

of ecosystems around... and Detect Arctic Climate and Ecosystem Changes 3) Improve Weather and Water Forecasts and Warnings 4... ice conditions. These changes in Arctic ......

188

Arctic Change 2009 Woodgate Wk 4 -Mon Typical Arctic profiles  

E-Print Network (OSTI)

a cold (halocline) layer, which insulates the ice from the warm Atlantic water beneath (Shimada et al -divided into 2 channels by the Diomede Islands - split by the US- Russian border -ice covered from in the Arctic Implicated in the seasonal melt-back of ice In summer, Pacific waters are a source of near

Washington at Seattle, University of

189

Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

Ice Ice Nature Bulletin No. 661-A january 7, 1978 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation ICE There was a time when ice, cut on frozen ponds and lakes, was transported by fast clipper ships from New England to New Orleans where it was worth its weight in gold. Nowadays this cold brittle colorless substance is commonplace everywhere. Few people, however, know that ice is one of the strangest of all solids; and that, because of its unique properties, life on earth is what it is. Those properties are due to the distinctive structure of a molecule of water, formed of three elemental particles or atoms -- two of hydrogen and one of oxygen -- expressed by the familiar symbol, H2O. The three atoms are held together by two chemical bonds expressed by another symbol, H-O-H. Briefly, the unique properties of water, water vapor, and ice arise from that bonding and the arrangement of electron pairs around the oxygen atom.

190

Mendeleev Ridge The Arctic Crossroads  

E-Print Network (OSTI)

halocline" waters, which insulate the ice from the underlying warm Atlantic waters, come from the Arctic, wind, currents and ice motion in the region of the Chukchi Borderland 4. Some of the boundary current heat. Its fate can influence ice thickness. 2. The Pacific waters carry nutrients. The fate

Washington at Seattle, University of

191

Preliminary Geospatial Analysis of Arctic Ocean Hydrocarbon Resources  

SciTech Connect

Ice coverage of the Arctic Ocean is predicted to become thinner and to cover less area with time. The combination of more ice-free waters for exploration and navigation, along with increasing demand for hydrocarbons and improvements in technologies for the discovery and exploitation of new hydrocarbon resources have focused attention on the hydrocarbon potential of the Arctic Basin and its margins. The purpose of this document is to 1) summarize results of a review of published hydrocarbon resources in the Arctic, including both conventional oil and gas and methane hydrates and 2) develop a set of digital maps of the hydrocarbon potential of the Arctic Ocean. These maps can be combined with predictions of ice-free areas to enable estimates of the likely regions and sequence of hydrocarbon production development in the Arctic. In this report, conventional oil and gas resources are explicitly linked with potential gas hydrate resources. This has not been attempted previously and is particularly powerful as the likelihood of gas production from marine gas hydrates increases. Available or planned infrastructure, such as pipelines, combined with the geospatial distribution of hydrocarbons is a very strong determinant of the temporal-spatial development of Arctic hydrocarbon resources. Significant unknowns decrease the certainty of predictions for development of hydrocarbon resources. These include: 1) Areas in the Russian Arctic that are poorly mapped, 2) Disputed ownership: primarily the Lomonosov Ridge, 3) Lack of detailed information on gas hydrate distribution, and 4) Technical risk associated with the ability to extract methane gas from gas hydrates. Logistics may control areas of exploration more than hydrocarbon potential. Accessibility, established ownership, and leasing of exploration blocks may trump quality of source rock, reservoir, and size of target. With this in mind, the main areas that are likely to be explored first are the Bering Strait and Chukchi Sea, in spite of the fact that these areas do not have highest potential for future hydrocarbon reserves. Opportunities for improving the mapping and assessment of Arctic hydrocarbon resources include: 1) Refining hydrocarbon potential on a basin-by-basin basis, 2) Developing more realistic and detailed distribution of gas hydrate, and 3) Assessing the likely future scenarios for development of infrastructure and their interaction with hydrocarbon potential. It would also be useful to develop a more sophisticated approach to merging conventional and gas hydrate resource potential that considers the technical uncertainty associated with exploitation of gas hydrate resources. Taken together, additional work in these areas could significantly improve our understanding of the exploitation of Arctic hydrocarbons as ice-free areas increase in the future.

Long, Philip E.; Wurstner, Signe K.; Sullivan, E. C.; Schaef, Herbert T.; Bradley, Donald J.

2008-10-01T23:59:59.000Z

192

Annual measurement of sea-ice thickness using an upward-looking sonar  

Science Journals Connector (OSTI)

... and the forms the ice takes are of great importance to operators in polar conditions. Offshore ...

Rick Hudson

1990-03-08T23:59:59.000Z

193

The Effect of the Sea Ice Freshwater Flux on Southern Ocean Temperatures in CCSM3: Deep-Ocean Warming and Delayed Surface Warming  

Science Journals Connector (OSTI)

This study explores the role of sea ice freshwater and salt fluxes in modulating twenty-first-century surface warming in the Southern Ocean via analysis of sensitivity experiments in the Community Climate System Model, version 3 (CCSM3). In ...

Clark H. Kirkman IV; Cecilia M. Bitz

2011-05-01T23:59:59.000Z

194

Changes in sea-level associated with modifications on the mass balance of the Greenland and Antartic ice sheets over the 21st century  

E-Print Network (OSTI)

Changes in runoff from Greenland and Antarctica are often cited as one of the major concerns linked to anthropogenic changes in climate. The changes in mass balance, and associated changes in sea-level, of these two ice ...

Bugnion, Véronique.

195

Impact of the Southern ocean winds on sea-ice - ocean interaction and its associated global ocean circulation in a warming world  

E-Print Network (OSTI)

This dissertation discusses a linkage between the Southern Ocean (SO) winds and the global ocean circulation in the framework of a coarse-resolution global ocean general circulation model coupled to a sea-ice model. In addition to reexamination...

Cheon, Woo Geunn

2009-05-15T23:59:59.000Z

196

Ice at the Interface: Atmosphere-Ice-Ocean Boundary Layer Processes and Their Role in Polar Change---Workshop Report  

SciTech Connect

The atmosphere-ocean boundary layer in which sea ice resides includes many complex processes that require a more realistic treatment in GCMs, particularly as models move toward full earth system descriptions. The primary purpose of the workshop was to define and discuss such coupled processes from observational and modeling points of view, including insight from both the Arctic and Antarctic systems. The workshop met each of its overarching goals, including fostering collaboration among experimentalists, theorists and modelers, proposing modeling strategies, and ascertaining data availability and needs. Several scientific themes emerged from the workshop, such as the importance of episodic or extreme events, precipitation, stratification above and below the ice, and the marginal ice zone, whose seasonal Arctic migrations now traverse more territory than in the past.

Hunke, Elizabeth C. [Los Alamos National Laboratory

2012-07-23T23:59:59.000Z

197

E-Print Network 3.0 - arctic springtail megaphorura Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

for Fish Resources of the Arctic Management Area... (Arctic FMP) and Amendment 29 to the Fishery Management Plan for Bering Sea Aleutian Islands King Source: NOAA Marine...

198

A Comparison of Atmospheric Reanalysis Products for the Arctic Ocean and Implications for Uncertainties in Air–Sea Fluxes  

E-Print Network (OSTI)

The uncertainties related to atmospheric fields in the Arctic Ocean from commonly used and recently available reanalysis products are investigated. Fields from the 1) ECMWF Interim Re-Analysis (ERA-Interim), 2) Common ...

Chaudhuri, Ayan H.

199

Subcritical crack growth, initiation, and arrest in columnar freshwater and sea ice.  

E-Print Network (OSTI)

??A study was conducted to determine if slow stable sub-critical crack growth may occur in ice. The Double Torsion fracture toughness geometry was used to… (more)

Parsons, Bruce L.

1989-01-01T23:59:59.000Z

200

Arctic & Antarctic Activity Book  

E-Print Network (OSTI)

hundred animals scattered around Antarctica. 6 #12;Seals are mammals, and they have to breathe air to live seal Lemmings Orca King crab Walrus Arctic tern Ptarmigan Musk Ox Sculpin Cod Brittle star Black fly. Can you help this seal find her breathing hole in the ice sheet? 7 #12;Color Me! Male walruses have

Note: This page contains sample records for the topic "arctic sea ice" 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

Recent contributions of glaciers and ice caps to sea level rise  

Science Journals Connector (OSTI)

... rivers originating in portions of HMA do not reach the sea. Most notable are the Amu ...Darya and Syr ...

Thomas Jacob; John Wahr; W. Tad Pfeffer; Sean Swenson

2012-02-08T23:59:59.000Z

202

E-Print Network 3.0 - arctic ocean expedition Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Arctic will lead to a better understanding of how the Summary: between the U.S. and Russia began with the expedition of the Bering and Chukchi Seas ( Arctic Ocean... . Arctic...

203

Grounding-line migration in plan-view marine ice-sheet models: results of the ice2sea MISMIP3d intercomparison  

E-Print Network (OSTI)

models (SSA, A–HySSA) produce larger ice sheets than modelsplan-view ice-sheet models they produce different results.the Antarctic ice sheet should at least produce grounding-

2013-01-01T23:59:59.000Z

204

In: Lozn et al., Climate of the 21st century: Changes and risks. GEO, Hamburg/Germany, pp. 206-211, The response of polar sea ice to climate variability and change  

E-Print Network (OSTI)

reductions in ice coverage with important consequences for the global heat budget. With global climate models and anthropogenic climate change. While satellite remote sensing can now provide sea-ice data sets of sufficient, reductions in ice extent due to, e.g., perturbations in atmospheric heat transfer into the polar regions

Eicken, Hajo

205

Climate Variability and Temporal Trends of Persistent Organic Pollutants in the Arctic: A Study of Glaucous Gulls  

Science Journals Connector (OSTI)

This study thus suggests that predicted climate change should be considered in assessments of future temporal trends of POPs in Arctic wildlife. ... Climate variation may be measured in a multiude of ways (temperature, wind, precipitation, snowfall, sea ice distribution, glacier melting, etc.). ... The asymmetries in the pressure pattern mean that cool winds sweep east-southeast across eastern Canada, and southwesterly North Atlantic storm tracks bring rain and mild temperatures to northern Europe. ...

Jan O. Bustnes; Geir W. Gabrielsen; Jonathan Verreault

2010-03-18T23:59:59.000Z

206

First observations of the interaction of ocean swell with sea ice using satellite radar altimeter data  

Science Journals Connector (OSTI)

... deeper in the pack (Fig. 2b,c) then imply a continuous reduction in the interrelated height and slope distributions of the ocean (or thin ice) surface as a function ... .

C. G. Rapley

1984-01-12T23:59:59.000Z

207

Unusual narwhal sea ice entrapments and delayed autumn freeze-up trends  

E-Print Network (OSTI)

monoceros) occur when rapid changes in weather and wind conditions create a formation of fast ice in bays alterations include (1) long-term moni- toring of population metrics, life history, or behavior in combination in weather and wind

Laidre, Kristin L.

208

Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project)  

E-Print Network (OSTI)

processes that can produce rapid ice loss, (2) large-scalesimulate the same ice sheet can produce different behaviorss. The Antarctic ice sheet is predicted to produce a greater

2013-01-01T23:59:59.000Z

209

Interglacial High Sea Levels and the Control of Greenland Ice by the Precession of the Equinoxes  

Science Journals Connector (OSTI)

...ages. BROECKER, W.S., SCIENCE 151 : 299 ( 1968 ). DANSGAARD, W, ONE THOUSAND CENTURIES OF CLIMATIC RECORD FROM CAMP CENTURY ON GREENLAND ICE SHEET, SCIENCE 166 : 377 ( 1969 ). EMILIANI, C, CARIBBEAN CORES P6304-8 AND P6304-9 - NEW ANALYSIS...

C. Emiliani

1969-12-19T23:59:59.000Z

210

Parameterization of the Extinction Coefficient in Ice and Mixed-Phase Arctic Clouds during the ISDAC Field Campaign  

SciTech Connect

This report documents the history of attempts to directly measure cloud extinction, the current measurement device known as the Cloud Extinction Probe (CEP), specific problems with direct measurement of extinction coefficient, and the attempts made here to address these problems. Extinction coefficient is one of the fundamental microphysical parameters characterizing bulk properties of clouds. Knowledge of extinction coefficient is of crucial importance for radiative transfer calculations in weather prediction and climate models given that Earth's radiation budget (ERB) is modulated much by clouds. In order for a large-scale model to properly account for ERB and perturbations to it, it must ultimately be able to simulate cloud extinction coefficient well. In turn this requires adequate and simultaneous simulation of profiles of cloud water content and particle habit and size. Similarly, remote inference of cloud properties requires assumptions to be made about cloud phase and associated single-scattering properties, of which extinction coefficient is crucial. Hence, extinction coefficient plays an important role in both application and validation of methods for remote inference of cloud properties from data obtained from both satellite and surface sensors (e.g., Barker et al. 2008). While estimation of extinction coefficient within large-scale models is relatively straightforward for pure water droplets, thanks to Mie theory, mixed-phase and ice clouds still present problems. This is because of the myriad forms and sizes that crystals can achieve, each having their own unique extinction properties. For the foreseeable future, large-scale models will have to be content with diagnostic parametrization of crystal size and type. However, before they are able to provide satisfactory values needed for calculation of radiative transfer, they require the intermediate step of assigning single-scattering properties to particles. The most basic of these is extinction coefficient, yet it is rarely measured directly, and therefore verification of parametrizations is difficult. The obvious solution is to be able to measure microphysical properties and extinction at the same time and for the same volume. This is best done by in situ sampling by instruments mounted on either balloon or aircraft. The latter is the usual route and the one employed here. Yet the problem of actually measuring extinction coefficient directly for arbitrarily complicated particles still remains unsolved.

Korolev, A; Shashkov, A; Barker, H

2012-03-06T23:59:59.000Z

211

Projected state of the Arctic Sea Ice and Permafrost by 2030 Karsten Steinhaeuser, Esther Parish, Alex Sorokine, Auroop R. Ganguly*  

E-Print Network (OSTI)

Parish, Alex Sorokine, Auroop R. Ganguly* Oak Ridge National Laboratory, Oak Ridge, TN 37830 Division Oak Ridge National Laboratory, Oak Ridge, TN, 37830 Email: gangulyar@ornl.gov Phone: 865 Ridge National Laboratory, Oak Ridge, TN 37830 Email: rossb@ornl.gov Phone: 865-576-1034 Background

Minnesota, University of

212

Convective forcing of mercury and ozone in the Arctic boundary layer induced by leads in sea ice  

Science Journals Connector (OSTI)

... m. HYSPLIT trajectories generated with NDAS meteorological data were also checked with trajectories generated from WRF meteorological data to verify paths. Daily satellite images were used for both years to ...

Christopher W. Moore; Daniel Obrist; Alexandra Steffen; Ralf M. Staebler; Thomas A. Douglas; Andreas Richter; Son V. Nghiem

2014-01-15T23:59:59.000Z

213

Ice deformation near SHEBA R. W. Lindsay  

E-Print Network (OSTI)

in the vicinity of the Surface Heat Budget of the Arctic Ocean (SHEBA) ice camp that is suitable for forcing factor for regional heat fluxes, ice growth and melt rates, and ice strength [Maykut, 1982Ice deformation near SHEBA R. W. Lindsay Polar Science Center, University of Washington, Seattle

Lindsay, Ron

214

Glaciers, ice sheets, and sea level: effect of a CO/sub 2/-induced climatic change  

SciTech Connect

The workshop examined the basic questions of how much water has been exchanged between land ice and ocean during the last century, what is happening now, and, given existing climate-modeling prediction, how much exchange can be expected in the next century. In addition, the evidence for exchange was examined and gaps in that evidence were identified. The report includes the 23 presentations made at the workshop, summarizes the workshop discussion, and presents the Committee's findings and recommendations. Separate abstracts have been prepared for the 23 presentations.

none,

1985-09-01T23:59:59.000Z

215

Solar Radiative Heating in First Year Sea Ice M.J. McGuinness 1 , K.A. Landman 2 , H.J. Trodahl 3 , A.E. Pantoja 3  

E-Print Network (OSTI)

Solar Radiative Heating in First Year Sea Ice M.J. McGuinness 1 , K.A. Landman 2 , H.J. Trodahl 3 ice show daily oscillations consistent with heating by solar radiation. We present and solve a heat for solar power absorption based on Monte Carlo scatter­ ing simulations of penetrating photons. We observe

216

The Holocene climate evolution in the high-latitude Southern Hemisphere simulated by a coupled atmosphere-sea ice-ocean-vegetation model  

E-Print Network (OSTI)

CO2 a) b) Sea-ice area -2.0 -1.5 -1.0 -0.5 0.0 0.5 -9000 -8000 -7000 -6000 -5000 -4000 -3000 -2000 concentrations 500 550 600 650 700 750 -9000 -8000 -7000 -6000 -5000 -4000 -3000 -2000 -1000 0 Time [yr] CH4conc -8000 -7000 -6000 -5000 -4000 -3000 -2000 -1000 0 Time [yr] W/m 2 JAN FEBDEC MAR AUG NOV OCTSEP JUL CH4

Renssen, Hans

217

The influence of ice nucleation mode and ice vapor growth on simulation of  

NLE Websites -- All DOE Office Websites (Extended Search)

The influence of ice nucleation mode and ice vapor growth on simulation of The influence of ice nucleation mode and ice vapor growth on simulation of arctic mixed-phase clouds Avramov, Alexander The Pennsylvania State University Category: Modeling Mixed-phase arctic stratus clouds are the predominant cloud type in the Arctic . Perhaps one of the most intriguing of their features is that they tend to have liquid tops that precipitate ice. Despite the fact that this situation is colloidally unstable, these cloud systems are quite long lived - from a few days to over a couple of weeks. Previous studies have suggested that this longevity may be due to a paucity of ice nucleating aerosols (ice nuclei, or IN) in the Arctic. Such studies have shown that small changes in IN concentrations can cause large changes in the amount of liquid water within a mixed-phase stratus deck. We use the Regional

218

COLLABORATIVE RESEARCH: TOWARDS ADVANCED UNDERSTANDING AND PREDICTIVE CAPABILITY OF CLIMATE CHANGE IN THE ARCTIC USING A HIGH-RESOLUTION REGIONAL ARCTIC CLIMATE SYSTEM MODEL  

SciTech Connect

The motivation for this project was to advance the science of climate change and prediction in the Arctic region. Its primary goals were to (i) develop a state-of-the-art Regional Arctic Climate system Model (RACM) including high-resolution atmosphere, land, ocean, sea ice and land hydrology components and (ii) to perform extended numerical experiments using high performance computers to minimize uncertainties and fundamentally improve current predictions of climate change in the northern polar regions. These goals were realized first through evaluation studies of climate system components via one-way coupling experiments. Simulations were then used to examine the effects of advancements in climate component systems on their representation of main physics, time-mean fields and to understand variability signals at scales over many years. As such this research directly addressed some of the major science objectives of the BER Climate Change Research Division (CCRD) regarding the advancement of long-term climate prediction.

Gutowski, William J.

2013-02-07T23:59:59.000Z

219

E-Print Network 3.0 - arctic oil spill Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

have to be prevented in advance ." (FI) "Cruise ships are so large... Spill Arctic weather or ice conditions can suddenly change - The inexperienced will certainly...

220

ARM - Lesson Plans: When Land Ice Melts  

NLE Websites -- All DOE Office Websites (Extended Search)

ice melts? Do you think melting glaciers and other land-based ice masses will make sea level rise? Will it submerge the continents on which the ice used to be? Most of the...

Note: This page contains sample records for the topic "arctic sea ice" 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

A New Model to Construct Ice Stream Surface Elevation Profiles and Calculate Contributions to Sea-Level Rise  

E-Print Network (OSTI)

to produce independent assessments of the state of polar iceproduce these predictions account for thermal expansion, changes in non-polar glaciers and ice

Adachi, Yosuke

2012-01-01T23:59:59.000Z

222

Radiocarbon in particulate matter from the eastern sub-arctic Pacific Ocean; evidence of a source of terrestrial carbon to the deep sea.  

E-Print Network (OSTI)

THE EASTERN SUB-ARCTIC PACIFIC OCEAN: EVIDENCE OF A SOURCEfrom the deep Northeast Pacific Ocean. Due to the largeMap of the North Pacific Ocean (after Favorite, Dodimead &

Druffel, Ellen R M; Honju, Susumu; Griffin, Sheila; Wong, C S

1986-01-01T23:59:59.000Z

223

Extraction of the seabed critical angle using ice cracking noise as a signal source  

Science Journals Connector (OSTI)

A technique is described for measuring the reflection coefficient of the Arctic seabed with a single vertical array of hydrophones. Naturally occurring ice cracks were used as the acoustic sources. This method circumvents the difficulties and expense of introducing artificial sound sources through the thick Arctic pack ice. The measurements were made in April with a 22?element array suspended from the ice in 420 m of water. The range of the source is first determined using the direct arrival and multiple reflections from the seabed and under?ice surface. Then the directivity index is determined using the direct arrival path only. A plot of the reflection coefficient versus grazing angle clearly indicates the value of the critical angle. The sound speed of the sea bottom corresponding to this critical angle agrees well with that measured from a bottom grab sample taken during the field trip. Finally an interesting phenomenon was an anomalous increase of power at a grazing angle of 60°. This is associated with a leaky plate wave radiating at the ice?water interface.

Pierre Zakarauskas; Ronald I. Verrall; Michael V. Greening

1990-01-01T23:59:59.000Z

224

Amundsen Sea sea-ice variability, atmospheric circulation, and spatial variations in snow isotopic composition from new West Antarctic firn cores  

E-Print Network (OSTI)

Recent work has documented dramatic changes in the West Antarctic Ice Sheet (WAIS) over the past 30 years (e.g., mass loss, glacier acceleration, surface warming) due largely to the influence of the marine environment. ...

Criscitiello, Alison Sara

2014-01-01T23:59:59.000Z

225

Methanesulfonate in the Greenland Ice Sheet Project 2 Ice Core  

E-Print Network (OSTI)

sulfate in the Dye 3 and Camp Century Greenland ice cores infor SO4 2- in the Dye 3, Camp Century, MSA to non-sea salt

Saltzman, E. S; Whung, P.-Y.; Mayewski, P. A

1997-01-01T23:59:59.000Z

226

Simulating Arctic Climate Warmth and Icefield Retreat in the  

E-Print Network (OSTI)

, Devon, and Meighen ice caps in the Canadian Arctic, and possibly in Camp Century (northwest Greenland- atures markedly warmer than those in the 20th century and the late Holocene, and it also featured

Ingólfsson, �lafur

227

Ice age paleotopography  

SciTech Connect

A gravitationally self-consistent theory of postglacial relative sea level change is used to infer the variation of surface ice and water cover since the Last Glacial Maximum (LGM). The results show that LGM ice volume was approximately 35 percent lower than suggested by the CLIMAP reconstruction and the maximum heights of the main Laurentian and Fennoscandian ice complexes are inferred to have been commensurately lower with respect to sea level. Use of these Ice Age boundary conditions in atmospheric general circulation models will yield climates that differ significantly from those previously inferred on the basis of the CLIMAP data set.

Peltier, W.R. (Univ. of Toronto, Ontario (Canada))

1994-07-08T23:59:59.000Z

228

A View of Antarctic Ice-Sheet Evolution from Sea-Level and Deep-Sea Isotope Changes During the Late Cretaceous-Cenozoic  

E-Print Network (OSTI)

sheet in the earliest Oligocene (33.55 Ma), but there is physical evidence for glaciation in the Eocene. Though there are inherent limitations in sea-level and deep-sea isotope records, both place constraints on the size and extent of Late Cretaceous...

Miller, K. G.; Wright, J. D.; Katz, M. E.; Browning, J. V.; Cramer, B. S.; Wade, Bridget S.; Mizintseva, S. F.

2008-01-01T23:59:59.000Z

229

Dynamics of Arctic and Sub-Arctic Climate and Atmospheric Circulation: Diagnosis of Mechanisms and Biases Using Data Assimilation  

SciTech Connect

This is the final report for DOE grant DE-FG02-07ER64434 to Eric DeWeaver at the University of Wisconsin-Madison. The overall goal of work performed under this grant is to enhance understanding of simulations of present-day climate and greenhouse gas-induced climate change. Enhanced understanding is desirable 1) as a prerequisite for improving simulations; 2) for assessing the credibility of model simulations and their usefulness as tools for decision support; and 3) as a means to identify robust behaviors which commonly occur over a wide range of models, and may yield insights regarding the dominant physical mechanisms which determine mean climate and produce climate change. A furthe objective is to investigate the use of data assimilation as a means for examining and correcting model biases. Our primary focus is on the Arctic, but the scope of the work was expanded to include the global climate system to the extent that research targets of opportunity present themselves. Research performed under the grant falls into five main research areas: 1) a study of data assimilation using an ensemble filter with the atmospheric circulation model of the National Center for Atmospheric Research, in which both conventional observations and observations of the refraction of radio waves from GPS satellites were used to constrain the atmospheric state of the model; 2) research on the likely future status of polar bears, in which climate model simluations were used to assess the effectiveness of climate change mitigation efforts in preserving the habitat of polar bears, now considered a threatened species under global warming; 3) as assessment of the credibility of Arctic sea ice thickness simulations from climate models; 4) An examination of the persistence and reemergence of Northern Hemisphere sea ice area anomalies in climate model simulations and in observations; 5) An examination of the roles played by changes in net radiation and surface relative humidity in determine the response of the hydrological cycle to global warming.

Eric T. DeWeaver

2010-01-19T23:59:59.000Z

230

Autosub missions beneath Polar Ice: Preparation and Experience  

E-Print Network (OSTI)

Autosub missions beneath Polar Ice: Preparation and Experience Gwyn Griffiths Southampton, May 2004 #12;Autosub Polar Campaigns J 2001 - Krill distribution and sea ice thickness studies in the northern Weddell Sea (Brierley, Fernandes and Brandon). J 2003 - Sea ice thickness, Bellingshausen Sea

Griffiths, Gwyn

231

Wind, sea ice, inertial oscillations and upper ocean mixing in Marguerite Bay, Western Antarctic Peninsula : observations and modeling  

E-Print Network (OSTI)

Two years of moored oceanographic and automatic weather station data which span the winter ice seasons of 2001-2003 within Marguerite Bay on the western Antarctic Peninsula (wAP) shelf were collected as part of the Southern ...

Hyatt, Jason

2006-01-01T23:59:59.000Z

232

Use of Synthetic Aperture Radar (SAR) to Identify and Characterize Overwintering Areas of Fish in Ice-Covered Arctic RIvers: A Demonstration with Broad Whitefish and their Habitats in the Sagavanirktok River, Alaska  

SciTech Connect

In northern climates, locating overwintering fish can be very challenging due to thick ice cover. Areas near the coast of the Beaufort Sea provide valuable overwintering habitat for both resident and anadromous fish species; identifying and understanding their use of overwintering areas is of special interest. Synthetic aperture radar (SAR) imagery from two spaceborne satellites was examined as an alternative to radiotelemetry for identifying anadromous fish overwintering. The presence of water and ice were sampled at 162 sites and fish were sampled at 16 of these sites. From SAR imagery alone, we successfully identified large pools inhabited by overwintering fish in the ice-covered Sagavanirktok River. In addition, the imagery was able to identify all of the larger pools (mean minimum length of 138m (range 15-470 m; SD=131)) of water located by field sampling. The effectiveness of SAR to identify these pools varied from 31% to 100%, depending on imagery polarization, the incidence angle range, and the orbit. Horizontal transmit–vertical receive (HV) polarization appeared best. The accuracy of SAR was also assessed at a finer pixel-by-pixel (30-m x30-m) scale. The best correspondence at this finer scale was obtained with an image having HV polarization. The levels of agreement ranged from 54% to 69%. The presence of broad whitefish (the only anadromous species present) was associated with salinity and pool size (estimated with SAR imagery); fish were more likely to be found in larger pools with low salinity. This research illustrates that SAR imaging has great potential for identifying under-ice overwintering areas of riverine fish. These techniques should allow managers to identify critical overwintering areas with relatively more ease and lower cost than traditional techniques.

Brown, Richard S.; Duguay, Claude R.; Mueller, Robert P.; Moulton, Larry; Doucette, Peter J.; Tagestad, Jerry D.

2010-12-01T23:59:59.000Z

233

Arctic Stratigraphy  

Science Journals Connector (OSTI)

... made in many parts of the Arctic from the previous reconnaissance level of geological knowledge (Norsk Polarinstitutt. Skrifter Nr. 135. By S. H. Buchan, A. Challiner, W ... , W. B. Harland and J. R. Parker. Pp. 92. Oslo : Norsk Polarinstitutt, 1965. 15 kr.). It is the result of work carried out ...

1966-03-05T23:59:59.000Z

234

Draft Genome Sequence of Moritella dasanensis Strain ArB 0140, a Psychrophilic Bacterium Isolated from the Arctic Ocean  

Science Journals Connector (OSTI)

...isolated from the Arctic Ocean, exhibited ice-pitting...organism in the Arctic Ocean. Nucleotide sequence...described in this paper is the first version, AKXQ01000000...Delcher AL , KA Bratke, EC Powers, and SL Salzberg. 2007...isolated from the Arctic ocean. Int. J. Syst. Evol...

Sung Gu Lee; Hye Yeon Koh; Jun Hyuck Lee; Sung-Ho Kang; Hak Jun Kim

2012-10-01T23:59:59.000Z

235

Relationship Between Arctic Clouds and Synoptic-Scale Variability  

NLE Websites -- All DOE Office Websites (Extended Search)

the Alaskan coast (Curry et al. 1996; Intrieri et al. 1999). Cloud cover over the sea-ice typically maximizes in summer, whereas coastal Alaskan cloudiness typically maximizes...

236

A Potential Role for Immersion Freezing in Arctic Mixed-Phase Stratus  

NLE Websites -- All DOE Office Websites (Extended Search)

Potential Role for Immersion Freezing in Arctic Mixed-Phase Stratus Potential Role for Immersion Freezing in Arctic Mixed-Phase Stratus Gijs de Boer, Edwin W. Eloranta, Tempei Hashino, and Gregory J. Tripoli The University of Wisconsin - Madison (1) Introduction Ice formation appears to a dominant factor controlling the lifecycle of Arctic mixed-phase clouds. To date, our understanding of ice formation in these long-lasting cloud structures does not explain the formation of observed ice amounts. Particularly puzzling are observa-

237

What economic support is needed for Arctic offshore wind power?  

Science Journals Connector (OSTI)

Abstract Wind power is increasingly being installed in cold climates and in offshore locations. It is generally recognised that installing wind power to offshore locations is more expensive than onshore. The additional challenges from Arctic conditions with annual sea icing are still poorly known. We reviewed the existing knowledge of offshore wind power costs and developed a calculation model for the economics of offshore wind turbines in Finland, including taxes and sea base rent, to obtain a base case for determining the required tariff support. The model was tested with different production and cost rates to obtain a tariff price, which would make offshore wind power on Finnish territory economically viable for the producer. The main developers of planned offshore projects in Finland were interviewed to obtain a comparison between the created model and industry expectations. The cost of erected turbines was estimated to be 2750 €/kW. With this cost of capacity, it was clear that a higher than the current tariff price (83.5 €/MWh) will be required for offshore developments. Our analysis indicated a price level of about 115 €/MWh to be required. We found that even rather small changes in cost or production rates may lead to excess profits or economic losses and further research and pilot projects are required to define a more reliable tariff level.

Olli Salo; Sanna Syri

2014-01-01T23:59:59.000Z

238

Extraction of the seabed reflectivity function using ice cracking noise as a signal source  

Science Journals Connector (OSTI)

A technique is described for measuring the reflection coefficient of the Arctic seabed with a single vertical array of hydrophones. Naturally occurring icecrackingnoises were used as the acoustic sources. This method circumvents the difficulties and expense of introducing artificial sound sources through the thick Arctic pack ice. The measurements were made in April 1988 with a 22?element array suspended from the ice in 420 m of water. The range of the source is first determined using the direct arrival and multiple reflections from the seabed and underice surface. Then the source directivity is parametrized using the direct arrival path only and extrapolated to reflected path angles. A plot of the reflection coefficient versus grazing angle clearly indicates the value of the critical angle. The sound speed of the sea bottom corresponding to this critical angle agrees well with that measured from a bottom grab sample taken during the field trip. Finally an interesting phenomenon was an anomalous increase of the received pressure level around a grazing angle of 60°. This is associated with a leaky plate wave radiating at the ice–water interface.

Pierre Zakarauskas; Ronald I. Verrall; Michael V. Greening

1993-01-01T23:59:59.000Z

239

Arctic, Antarctic and Alpine Research, Vol. 34, No. 4, 2002, pp. 103-114 Sediment Inclusions in Alaskan Coastal Sea Ice: Spatial Distribution, Interannual  

E-Print Network (OSTI)

with a sediment resuspension model. Sediments occur exclusively as aggregates of clay to fine-silt sized particles of magnitude smaller than 1999 sediment loads. Similarly, the potential for bottom- sediment resuspension was greater in 1999 than in 1998 and 2000 by more than a factor of two. Resuspension potential is controlled

Eicken, Hajo

240

A New Greenland Deep Ice Core  

Science Journals Connector (OSTI)

...isotopic profile with that from camp Century and with a deep-sea foraminifera...deep-sea cores. The redated Camp Century record suggests a dramatic termination...CENTURIES OF CLIMATIC RECORD FROM CAMP CENTURY ON GREENLAND ICE SHEET, SCIENCE...

W. Dansgaard; H. B. Clausen; N. Gundestrup; C. U. Hammer; S. F. Johnsen; P. M. Kristinsdottir; N. Reeh

1982-12-24T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

Arctic Exploration  

Science Journals Connector (OSTI)

... whalers proceed to their fishing-ground, and is known as "the whale-fisher's bight.” In the spring the Polar pack begins to drift to the southward and westward ... the north. "All experience seems to prove,” adds Nordenskiold, "that the polar basin, when not covered with compact, unbroken ice, is filled with closely-packed, unnavigable ...

C. R. MARKHAM

1871-11-30T23:59:59.000Z

242

Time-variable gravity observations of ice sheet mass balance: Precision and limitations of the GRACE satellite data  

E-Print Network (OSTI)

contribution to sea-level rise observed by GRACE withand ice caps to sea level rise, Nature, 482, 514–518. King,ice sheets to sea level rise, Geophys. Res. Lett. , 38,

Velicogna, I.; Wahr, J.

2013-01-01T23:59:59.000Z

243

Good morning, everyone. I'm Martin Jeffries, Principal Editor of the Arctic Report Card and a science advisor to the U.S. Arctic  

E-Print Network (OSTI)

of the University of Virginia, and Dr. Don Perovich of Dartmouth College. They will talk about vegetation and sea to independent peer-review organized by the Arctic Monitoring and Assessment Programme (AMAP) of the Arctic Council. Key highlights from the essays are presented on the front page of the Web site, where you'll also

244

The spatial response function of SeaWinds backscatter measurements  

E-Print Network (OSTI)

regions are used to produce images of the Earth's land and ice surfaces to support climate studies in a wide variety of studies, including ocean wind retrieval, sea-ice mapping and classification, iceberg are also collected over the land and ice areas of the Earth. SeaWinds measurements over these land and ice

Long, David G.

245

Mathematical Modelling and Numerical Simulation of Marine Ecosystems With Applications to Ice Algae.  

E-Print Network (OSTI)

??Sea-ice ecosystem modelling is a novel field of research. In this thesis, the main organism studied is sea-ice algae. A basic introduction to algae and… (more)

Wickramage, Shyamila Iroshi Perera

2013-01-01T23:59:59.000Z

246

FESD Proposal, Type I VOICE: Volcano, Ocean, Ice, and Carbon Experiments  

E-Print Network (OSTI)

in continental ice volume and sea level produce changes in pressure and stress within the crust and mantleFESD Proposal, Type I VOICE: Volcano, Ocean, Ice, and Carbon Experiments Project Manager: Charles during Pleistocene ice ages. We posit that changes in sea level and ice volume drive changes in volcanism

Huybers, Peter

247

A new synthesis program The Impact of Sea-Ice on Bottom-up and Top-down Controls of Crustacean  

E-Print Network (OSTI)

Institute of Ocean Sciences BEST-BSIERP Bering Sea Project bsierp.nprb.org The eastern Bering Sea study region showing the locations of the four long-term biophysical moorings (purple stars), and hydrographic, Deep-Sea Research II Trajectories of three satellite-tracked drifters drogued at 40 m (1990 in green

Rigor, Ignatius G.

248

Meltwater effects on flow of Greenland's ice sheet less severe...  

NLE Websites -- All DOE Office Websites (Extended Search)

severe than feared Meltwater effects on flow of Greenland's ice sheet less severe for sea level rise than earlier feared, scientists say The team found that accelerating ice sheet...

249

The connection between Labrador Sea buoyancy loss, deep western boundary current strength, and Gulf Stream path in an ocean circulation model  

E-Print Network (OSTI)

in the diagnostic sea ice model, and insulation of the ocean, which is less physical with the prognostic sea ice and surface water mass transformation are strongly dependent on the choice of sea ice and salinity restoring boundary condi- tions. Coupling the ocean model to a prognostic sea ice model results in much greater

Jochum, Markus

250

1 Copyright 2014 by ASME Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering  

E-Print Network (OSTI)

, Offshore and Arctic Engineering OMAE2014 June 8-13, 2014, San Francisco, California, USA OMAE2014 and icebergs present significant challenges for the development of arctic and subarctic oil and gas resources in northern regions. Offshore structures and vessels must be designed to withstand interaction with such ice

Bruneau, Steve

251

A Characterization of the Present-Day Arctic Atmosphere in CCSM4  

Science Journals Connector (OSTI)

Simulation of key features of the Arctic atmosphere in the Community Climate System Model, version 4 (CCSM4) is evaluated against observational and reanalysis datasets for the present-day (1981–2005). Surface air temperature, sea level pressure, ...

Gijs de Boer; William Chapman; Jennifer E. Kay; Brian Medeiros; Matthew D. Shupe; Steve Vavrus; John Walsh

2012-04-01T23:59:59.000Z

252

Arctic Energy Office  

NLE Websites -- All DOE Office Websites (Extended Search)

S Strategic Center for Natural Gas & Oil CONTACTS Joel Lindstrom Arctic Energy Office National Energy Technology Laboratory 420 L Street, Suite 305 Anchorage, Alaska 99501...

253

Sandia National Laboratories: Ice-Sheet Simulation Code Matures...  

NLE Websites -- All DOE Office Websites (Extended Search)

and Antarctic Ice Sheets, with particular attention to their contributions to global sea-level rise. Our recent highlight is the successful completion of a controlled mesh...

254

Team advances understanding of the Greenland Ice Sheet's meltwater...  

NLE Websites -- All DOE Office Websites (Extended Search)

for Greenland in the future, but its impact on ice sheet flux and associated sea level rise is uncertain: direct observations of the subglacial drainage system are lacking...

255

Sea Level Rise Media Release  

E-Print Network (OSTI)

Sea Level Rise Media Release Coverage Report 07/06/2009 Melting Ice Could Lead to Massive Waves 06/11/2009 Rising sea levels could see U.S. Atlantic coast cities make hard choices; Where to let Baltimore Chronicle & Sentinel, The 06/08/2009 Rapid rise in sea levels on East Coast predicted Pittsburgh

Hu, Aixue

256

Bedmap2: improved ice bed, surface and thickness datasets for Antarctica  

E-Print Network (OSTI)

of the Potential Sea-Level Rise from a Col- lapse of theof floating ice and sea level rise, Geophys. Res. Lett. ,contribution to sea-level rise (58 m) are simi- lar to those

2013-01-01T23:59:59.000Z

257

Trophic interactions within the Ross Sea continental shelf ecosystem  

Science Journals Connector (OSTI)

...important as sources of iron that fuel surface phytoplankton blooms...sea ice present, cryophilic algae in the Ross Sea are an important...annual, integrated basis ice algae contribute approximately 20...The temporal dynamics of ice algae are quite different compared...

2007-01-01T23:59:59.000Z

258

Ice sheets  

E-Print Network (OSTI)

mitigates recent sea-level rise. Science, 308, 1898-1901J. (2004). Accelerated sea-level rise from West Antarctica.and contributions to sea-level rise: 1992-2002. Journal of

Bentley, Charles G.; Thomas, Robert H.; Velicogna, Isabella

2007-01-01T23:59:59.000Z

259

Arctic energy resources  

SciTech Connect

The Arctic is a vulnerable region with immense resources. These range from the replenishable (tidal energy, hydroelectricity, wood, biomass, fish, game, and geothermal energy) to the non-replenishable (coal, minerals, natural gas, hydrocarbon deposits). But the problems of exploiting such resources without damaging the environment of the Arctic are formidable. In this book all aspects are considered: occurrence of energy resources; the technological and economic aspects of exploration and exploitation; the environmental and social impact of technological development.

Rey, L.

1983-01-01T23:59:59.000Z

260

Climate-derived tensions in Arctic security.  

SciTech Connect

Globally, there is no lack of security threats. Many of them demand priority engagement and there can never be adequate resources to address all threats. In this context, climate is just another aspect of global security and the Arctic just another region. In light of physical and budgetary constraints, new security needs must be integrated and prioritized with existing ones. This discussion approaches the security impacts of climate from that perspective, starting with the broad security picture and establishing how climate may affect it. This method provides a different view from one that starts with climate and projects it, in isolation, as the source of a hypothetical security burden. That said, the Arctic does appear to present high-priority security challenges. Uncertainty in the timing of an ice-free Arctic affects how quickly it will become a security priority. Uncertainty in the emergent extreme and variable weather conditions will determine the difficulty (cost) of maintaining adequate security (order) in the area. The resolution of sovereignty boundaries affects the ability to enforce security measures, and the U.S. will most probably need a military presence to back-up negotiated sovereignty agreements. Without additional global warming, technology already allows the Arctic to become a strategic link in the global supply chain, possibly with northern Russia as its main hub. Additionally, the multinational corporations reaping the economic bounty may affect security tensions more than nation-states themselves. Countries will depend ever more heavily on the global supply chains. China has particular needs to protect its trade flows. In matters of security, nation-state and multinational-corporate interests will become heavily intertwined.

Backus, George A.; Strickland, James Hassler

2008-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

6, 96559722, 2006 Arctic smoke  

E-Print Network (OSTI)

Discussions Arctic smoke ­ record high air pollution levels in the European Arctic due to agricultural fires into the European Arctic and caused the most severe air pollution episodes ever recorded there. This paper confirms that biomass burning (BB) was in-5 deed the source of the observed air pollution, studies the transport

Boyer, Edmond

262

Testing a Coupled Ice-Mixed-Layer Model Under Subarctic Conditions  

Science Journals Connector (OSTI)

A one-dimensional oceanic mixed-layer model has been coupled with a thermodynamic sea ice model in order to study the seasonal cycle of ice-ocean interaction in the subarctic ocean. The ice thickness is assumed constant and only variations of ice ...

Marie-Noëlle Houssais

1988-02-01T23:59:59.000Z

263

A lattice model to simulate ice-structure interaction  

E-Print Network (OSTI)

of the forces exerted by ice sheets on oil rigs is of great interest for designers of offshore structures. Over and offshore structures is of key im- portance in the design of offshore platforms in the Arctic. Unfortunately at drawing some conclusions about the forces exerted on large-scale structures such as oil rigs

Boyer, Edmond

264

CONTENTS Developing Alaskan Arctic  

NLE Websites -- All DOE Office Websites (Extended Search)

Developing Alaskan Arctic Developing Alaskan Arctic Potential ...........................................1 Commentary ...................................2 NETL Develops Strategic Partnership with the Alaska Center for Energy and Power ...8 Deepwater and Ultra-Deepwater Produced Water Discharge ....10 Intelligent Production System for Ultra Deepwater with Short Hop Wireless Power and Wireless Data Transfer .........................................16 Snapshots ......................................19 CONTACTS Roy Long Technology Manager Ultra-Deepwater/Offshore 304-285-4479 roy.long@netl.doe.gov Ray Boswell Technology Manager Natural Gas Technology R&D 412-386-7614 ray.boswell@netl.doe.gov Eric Smistad Technology Manager Oil Technology R&D 281-494-2619 eric.smistad@netl.doe.gov

265

Tracer transport in the Greenland Ice Sheet: constraints on ice cores and glacial history  

Science Journals Connector (OSTI)

The climate history and dynamics of the Greenland Ice Sheet are studied using a coupled model of the depositional provenance and transport of glacier ice, allowing simultaneous prediction of the detailed isotopic stratigraphy of ice cores at all the major Greenland sites. Adopting a novel method for reconstructing the age–depth relationship, we greatly improve the accuracy of semi-Lagrangian tracer tracking schemes and can readily incorporate an age-dependent ice rheology. The larger aim of our study is to impose new constraints on the glacial history of the Greenland Ice Sheet. Leading sources of uncertainty in the climate and dynamic history are encapsulated in a small number of parameters: the temperature and elevation isotopic sensitivities, the glacial–interglacial precipitation contrast and the effective viscosity of ice in the flow law. Comparing predicted and observed ice layering at ice core sites, we establish plausible ranges for the key model parameters, identify climate and dynamic histories that are mutually consistent and recover the past depositional elevation of ice cores to ease interpretation of their climatic records. With the coupled three-dimensional model of ice dynamics and provenance transport we propose a method to place all the ice core records on a common time scale and use discrepancies to adjust the reconstructed climate history. Analysis of simulated GRIP ice layering and borehole temperature profiles confirms that the GRIP record is sensitive to the dynamic as well as to the climatic history, but not enough to strongly limit speculation on the state of the Greenland Ice Sheet during the Eemian. In contrast, our study indicates that the Dye 3 and Camp Century ice cores are extremely sensitive to ice dynamics and greatly constrain Eemian ice sheet reconstructions. We suggest that the maximum Eemian sea-level contribution of the ice sheet was in the range of 3.5–4.5 m.

Nicolas Lhomme; Garry K.C. Clarke; Shawn J. Marshall

2005-01-01T23:59:59.000Z

266

Simulating Arctic Climate Warmth and Icefield Retreat in the Last Interglaciation  

Science Journals Connector (OSTI)

...Meighen ice caps in the Canadian Arctic, and possibly in Camp Century (northwest Greenland), suggest that these drill sites were...marked S; 72.5°N, 37.3°W), and possibly Camp Century (marked C; 77.2°N, 61.1°W), but...

Bette L. Otto-Bliesner; Shawn J. Marshall; Jonathan T. Overpeck; Gifford H. Miller; Aixue Hu; CAPE Last Interglacial Project members

2006-03-24T23:59:59.000Z

267

Distant origins of Arctic black carbon: A Goddard Institute for Space Studies ModelE experiment  

E-Print Network (OSTI)

profile, cloud temperature and amount, the seasonal cycle, and the tropopause level and accelerating polar ice melting. We use the Goddard Institute for Space Studies general circulation model to investigate is generally assumed. Citation: Koch, D., and J. Hansen (2005), Distant origins of Arctic black carbon

268

An update on land-ice modeling in the CESM  

SciTech Connect

Mass loss from land ice, including the Greenland and Antarctic ice sheets as well as smaller glacier and ice caps, is making a large and growing contribution to global sea-level rise. Land ice is only beginning to be incorporated in climate models. The goal of the Land Ice Working Group (LIWG) is to develop improved land-ice models and incorporate them in CESM, in order to provide useful, physically-based sea-level predictions. LJWG efforts to date have led to the inclusion of a dynamic ice-sheet model (the Glimmer Community Ice Sheet Model, or Glimmer-CISM) in the Community Earth System Model (CESM), which was released in June 2010. CESM also includes a new surface-mass-balance scheme for ice sheets in the Community Land Model. Initial modeling efforts are focused on the Greenland ice sheet. Preliminary results are promising. In particular, the simulated surface mass balance for Greenland is in good agreement with observations and regional model results. The current model, however, has significant limitations: The land-ice coupling is one-way; we are using a serial version of Glimmer-CISM with the shallow-ice approximation; and there is no ice-ocean coupling. During the next year we plan to implement two-way coupling (including ice-ocean coupling with a dynamic Antarctic ice sheet) with a parallel , higher-order version of Glimmer-CISM. We will also add parameterizations of small glaciers and ice caps. With these model improvements, CESM will be able to simulate all the major contributors to 21st century global sea-level rise. Results of the first round of simulations should be available in time to be included in the Fifth Assessment Report (ARS) of the Intergovernmental Panel on Climate Change.

Lipscomb, William H [Los Alamos National Laboratory

2011-01-18T23:59:59.000Z

269

Contemporary Sea Level Rise Anny Cazenave and William Llovel  

E-Print Network (OSTI)

Contemporary Sea Level Rise Anny Cazenave and William Llovel Laboratoire d'´etudes en g reserved 1941-1405/10/0115-0145$20.00 Key Words sea level rise, climate change, land ice melt, ocean we report on most recent results on contemporary sea level rise. We first present sea level

Siegel, David A.

270

High Resolution Wind Retrieval from SeaWinds David G. Long  

E-Print Network (OSTI)

proven useful in a variety of land and ice applications and are being operationally used for sea ice monitoring and iceberg tracking. SeaWinds land and ice appli- cations have been aided by the use- surement response, is exploited by reconstruction and resolu- tion enhancement algorithms to produce

Long, David G.

271

ACSD/CRB/CCRM Hindcasting Winds and Waves  

E-Print Network (OSTI)

AND WAVE REANALYSIS OBJECTIVEOBJECTIVE To produce aTo produce a high qualityhigh quality ·· Ice concentration dataIce concentration data ­­ Walsh and Johnson, ArcticWalsh and Johnson, Arctic and Antarctic Sea Ice Data, US Navy/NOAA Iceand Antarctic Sea Ice Data, US Navy/NOAA Ice CenterCenter #12;5 ACSD

272

Ice Fishing  

NLE Websites -- All DOE Office Websites (Extended Search)

Ice Fishing Ice Fishing Nature Bulletin No. 327-A January 11, 1969 Forest Preserve District of Cook County Richard B. Ogilvie, President Roland F. Eisenbeis, Supt. of Conservation ICE FISHING We have a peculiar class of people known as the "Frosty-toed Tribe". As soon as winter comes and the ice permits, they put on all the clothes they own and what they can borrow, pack their automobiles with equipment, and start early in the morning for some inland body of water or a bay along one of the Great Lakes. Usually, two or three go together and they may drive 50 or 100 miles. For hours, even in below zero weather, they huddle around holes cut in the ice, fishing patiently, sustained by hope, hot coffee, and a lot of conversation. Some days a man may catch nothing. Other days he may bring home all the law allows. Sometimes he fishes vainly until almost sundown and then begins to haul them in, all of the same kind and size, as fast as he can re-bait his hook. In the meantime, other anglers have rushed over, cut holes, and are fishing all around him -- usually in vain, because one of the strange things about ice fishing is that, although you may catch fish out of one hole, you may get nothing out of another only a few feet from it, using the same kind of bait at the same depth. There are a lot of hotly contested theories but nobody knows why. After watching and questioning scores of ice fishermen, some of them noted for their prowess, we find that although each has his own secret techniques and favorite spots, good catches seem more a matter of luck than skill. Although they are sluggish and don't fight, fish caught in winter have the firmest flesh and finest flavor. The biggest thrill comes from the skillet.

273

Mantle viscosity and ice-age ice sheet topography  

SciTech Connect

Ice-age paleotopography and mantle viscosity can both be inferred from observations of Earth`s response to the most recent deglaciation event of the current ice age. This procedure requires iterative application of a theoretical model of the global process of glacial isostatic adjustment. Results demonstrate that the iterative inversion procedure converges to a paleotopography that is extremely close to that from the ICE-4G model. The accompanying mantle viscosity profile is furthermore shown to reconcile the requirements of aspherical geoid anomalies related to the mantle convection process, thus resolving a fundamental issue concerning mantle rheology. The combined model also explains postglacial sea level histories for the east cost of the United States. 28 refs., 9 figs.

Peltier, W.R. [Univ. of Toronto, Ontario (Canada)

1996-09-06T23:59:59.000Z

274

Arctic Energy Technology Development Laboratory  

SciTech Connect

The Arctic Energy Technology Development Laboratory was created by the University of Alaska Fairbanks in response to a congressionally mandated funding opportunity through the U.S. Department of Energy (DOE), specifically to encourage research partnerships between the university, the Alaskan energy industry, and the DOE. The enabling legislation permitted research in a broad variety of topics particularly of interest to Alaska, including providing more efficient and economical electrical power generation in rural villages, as well as research in coal, oil, and gas. The contract was managed as a cooperative research agreement, with active project monitoring and management from the DOE. In the eight years of this partnership, approximately 30 projects were funded and completed. These projects, which were selected using an industry panel of Alaskan energy industry engineers and managers, cover a wide range of topics, such as diesel engine efficiency, fuel cells, coal combustion, methane gas hydrates, heavy oil recovery, and water issues associated with ice road construction in the oil fields of the North Slope. Each project was managed as a separate DOE contract, and the final technical report for each completed project is included with this final report. The intent of this process was to address the energy research needs of Alaska and to develop research capability at the university. As such, the intent from the beginning of this process was to encourage development of partnerships and skills that would permit a transition to direct competitive funding opportunities managed from funding sources. This project has succeeded at both the individual project level and at the institutional development level, as many of the researchers at the university are currently submitting proposals to funding agencies, with some success.

Sukumar Bandopadhyay; Charles Chamberlin; Robert Chaney; Gang Chen; Godwin Chukwu; James Clough; Steve Colt; Anthony Covescek; Robert Crosby; Abhijit Dandekar; Paul Decker; Brandon Galloway; Rajive Ganguli; Catherine Hanks; Rich Haut; Kristie Hilton; Larry Hinzman; Gwen Holdman; Kristie Holland; Robert Hunter; Ron Johnson; Thomas Johnson; Doug Kame; Mikhail Kaneveskly; Tristan Kenny; Santanu Khataniar; Abhijeet Kulkami; Peter Lehman; Mary Beth Leigh; Jenn-Tai Liang; Michael Lilly; Chuen-Sen Lin; Paul Martin; Pete McGrail; Dan Miller; Debasmita Misra; Nagendra Nagabhushana; David Ogbe; Amanda Osborne; Antoinette Owen; Sharish Patil; Rocky Reifenstuhl; Doug Reynolds; Eric Robertson; Todd Schaef; Jack Schmid; Yuri Shur; Arion Tussing; Jack Walker; Katey Walter; Shannon Watson; Daniel White; Gregory White; Mark White; Richard Wies; Tom Williams; Dennis Witmer; Craig Wollard; Tao Zhu

2008-12-31T23:59:59.000Z

275

NETL: Arctic Energy Office  

NLE Websites -- All DOE Office Websites (Extended Search)

Facts/Issues Facts/Issues Average South-Central natural gas consumption in 2005 was: 13.9% gas utility 20.0% power generation 54.3% industrial-LNG sales, oil refining, and fertilizer manufacturing 7.2% field operations 4.6% other Due to a lack of natural gas deliverability, the Cook Inlet fertilizer plant terminated operations in May 2008. LNG sales are increasingly curtailed during cold weather due to peak demand shortages. The LNG export license is up for renewal in 2011. Exploration must find new reserves on the order of 500 Bcf, and that will only solve the natural gas shortage until approximately 2019. Challenges Natural gas in the Arctic, until recently, has been largely overlooked. Little is known about the possible breadth of the Arctic storehouse of natural gas apart from the resource associated with the currently producing

276

Arctic Energy Office  

NLE Websites -- All DOE Office Websites (Extended Search)

O O G R A M FAC T S Strategic Center for Natural Gas & Oil CONTACTS Joel Lindstrom Arctic Energy Office National Energy Technology Laboratory 420 L Street, Suite 305 Anchorage, Alaska 99501 907-271-3618 joel.lindstrom@contr.netl.doe.gov Albert B. Yost II Sr. Management Technical Advisor Strategic Center for Natural Gas & Oil National Energy Technology Laboratory 3610 Collins Ferry Road Morgantown, WV 26507-0880 304-285-4479 albert.yost@netl.doe.gov

277

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

278

Using Doppler spectra to separate hydrometeor populations and analyze ice precipitation in multilayered mixed-phase clouds  

SciTech Connect

Multimodality of cloud radar Doppler spectra is used to partition cloud particle phases and to separate distinct ice populations in the radar sample volume, thereby facilitating analysis of individual ice showers in multilayered mixed-phase clouds. A 35-GHz cloud radar located at Barrow, Alaska, during the Mixed-Phase Arctic Cloud Experiment collected the Doppler spectra. Data from a pair of collocated depolarization lidars confirmed the presence of two liquid cloud layers reported in this study. Surprisingly, both of these cloud layers were embedded in ice precipitation yet maintained their liquid. Our spectral separation of the ice precipitation yielded two distinct ice populations: ice initiated within the two liquid cloud layers and ice precipitation formed in higher cloud layers. Comparisons of ice fall velocity versus radar reflectivity relationships derived for distinct showers reveal that a single relationship might not properly represent the ice showers during this period.

Rambukkange, Mahlon P.; Verlinde, J.; Eloranta, E. W.; Flynn, Connor J.; Clothiaux, Eugene E.

2011-01-31T23:59:59.000Z

279

E-Print Network 3.0 - antarctic marine pseudoalteromonas Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

ice -41.40.6 4M2 Pseudoalteromonas antarctica str.. IC 014 -Proteobacteria Arctic... CFB** Arctic sea ice, Japan Trench -41.7 4M6 marine ... Source: Ecole Polytechnique, Centre...

280

The microstructure of polar ice. Part I: Highlights from ice core research  

Science Journals Connector (OSTI)

Abstract Polar ice sheets play a fundamental role in Earth's climate system, by interacting actively and passively with the environment. Active interactions include the creeping flow of ice and its effects on polar geomorphology, global sea level, ocean and atmospheric circulation, and so on. Passive interactions are mainly established by the formation of climate records within the ice, in form of air bubbles, dust particles, salt microinclusions and other derivatives of airborne impurities buried by recurrent snowfalls. For a half-century scientists have been drilling deep ice cores in Antarctica and Greenland for studying such records, which can go back to around a million years. Experience shows, however, that the ice-sheet flow generally disrupts the stratigraphy of the bottom part of deep ice cores, destroying the integrity of the oldest records. For all these reasons glaciologists have been studying the microstructure of polar ice cores for decades, in order to understand the genesis and fate of ice-core climate records, as well as to learn more about the physical properties of polar ice, aiming at better climate-record interpretations and ever more precise models of ice-sheet dynamics. In this Part I we review the main difficulties and advances in deep ice core drilling in Antarctica and Greenland, together with the major contributions of deep ice coring to the research on natural ice microstructures. In particular, we discuss in detail the microstructural findings from Camp Century, Byrd, Dye 3, GRIP, GISP2, NorthGRIP, Vostok, Dome C, EDML, and Dome Fuji, besides commenting also on the earlier results of some pioneering ventures, like the Jungfraujoch Expedition and the Norwegian–British–Swedish Antarctic Expedition, among others. In the companion Part II of this work (Faria et al., 2014), the review proceeds with a survey of the state-of-the-art understanding of natural ice microstructures and some exciting prospects in this field of research.

Sérgio H. Faria; Ilka Weikusat; Nobuhiko Azuma

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

Arctic Research Program Summary for FY2009 Program Goals  

E-Print Network (OSTI)

, and radiation and their impacts on climate variability and change. We have established an observatory in Eureka of sea ice, and impacts of physical change on the marine ecosystem. This work is done through peer future evolution of the marine system in the study region. The modeling effort is lead by NOAA GLERL

282

Linear weakening of the AMOC in response to receding glacial ice sheets in CCSM3  

E-Print Network (OSTI)

North Atlantic; this expanded sea ice insulates the ocean from heat loss and leads to suppressed deepLinear weakening of the AMOC in response to receding glacial ice sheets in CCSM3 Jiang Zhu1 The transient response of the Atlantic Meridional Overturning Circulation (AMOC) to a deglacial ice sheet

Eisenman, Ian

283

Orbital and CO2 forcing of late Paleozoic continental ice sheets Daniel E. Horton,1  

E-Print Network (OSTI)

) produce large changes in late Paleozoic ice volume ($1.3 � 108 km3 ) and sea level ($20 to 245 m). Between cold summer orbit, but still produces significant ice volumes ($8­12 � 107 km3 ). Our results highlightOrbital and CO2 forcing of late Paleozoic continental ice sheets Daniel E. Horton,1 Christopher J

Poulsen, Chris J.

284

U.S. Geological Survery Oil and Gas Resource Assessment of the Russian Arctic  

SciTech Connect

The U.S. Geological Survey (USGS) recently completed a study of undiscovered petroleum resources in the Russian Arctic as a part of its Circum-Arctic Resource Appraisal (CARA), which comprised three broad areas of work: geological mapping, basin analysis, and quantitative assessment. The CARA was a probabilistic, geologically based study that used existing USGS methodology, modified somewhat for the circumstances of the Arctic. New map compilation was used to identify assessment units. The CARA relied heavily on geological analysis and analog modeling, with numerical input consisting of lognormal distributions of sizes and numbers of undiscovered accumulations. Probabilistic results for individual assessment units were statistically aggregated, taking geological dependencies into account. The U.S. Department of Energy (DOE) funds were used to support the purchase of crucial seismic data collected in the Barents Sea, East Siberian Sea, and Chukchi Sea for use by USGS in its assessment of the Russian Arctic. DOE funds were also used to purchase a commercial study, which interpreted seismic data from the northern Kara Sea, and for geographic information system (GIS) support of USGS mapping of geological features, province boundaries, total petroleum systems, and assessment units used in the USGS assessment.

Donald Gautier; Timothy Klett

2008-12-31T23:59:59.000Z

285

U.S. Arctic Research Policy: What do we need to know now?  

E-Print Network (OSTI)

· Involve indigenous communities in decisions · Enhance scientific monitoring and research into local: mitigation, adaptation, Arctic feedbacks, alternative energy, sequestration, Black Carbon Task Force cooperation: ratify Law of the Sea; "safe, secure, reliable" shipping: IMO code/SAR · Involve indigenous

Kuligowski, Bob

286

Multiple Effects of Changes in Arctic Snow Cover Terry V. Callaghan, Margareta Johansson, Ross D. Brown, Pavel Ya. Groisman,  

E-Print Network (OSTI)

.g. water storage and release), thermal regimes (e.g. insulation), vegetation and trace gas fluxes and river ice surfaces for 8­10 months each year. Arctic climate has entered a unique period relative), thermal regimes (e.g. insulation), vegetation and trace gas fluxes (Figure 1). The livelihoods and well

Bradley, Raymond S.

287

E-Print Network 3.0 - anoxic baltic sea Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

for Baltic Sea Research Warnemunde (IOW), Seestrasse 15, D-18119 Warnemunde, Germany... . Dippner, S. Hille et al. Ice Age), the environmental conditions of the central...

288

15 SEPTEMBER 2004 3623B I T Z A N D R O E 2004 American Meteorological Society  

E-Print Network (OSTI)

that trends in the atmosphere or ice circulation are not necessary to produce a relatively high rate for the High Rate of Sea Ice Thinning in the Arctic Ocean C. M. BITZ Polar Science Center, University of sea ice draft show that the ice has thinned in some parts of the Arctic Ocean at a remarkably high

Bitz, Cecilia

289

Clim. Past, 10, 11451163, 2014 www.clim-past.net/10/1145/2014/  

E-Print Network (OSTI)

of sea ice and its representation in climate models, especially in the current context of a decreased Arc-Holocene Arctic sea ice concentration F. Klein1, H. Goosse1, A. Mairesse1, and A. de Vernal2 1Université. The consistency between new quantitative recon- structions of Arctic sea ice concentration based on dinocyst

290

Editorial: Arctic marine biodiversity under change  

Science Journals Connector (OSTI)

Marine biodiversity in the Arctic is changing in response...2011). The Arctic region has become warmer in the past three decades (ACIA 2005), and most global climate models indicate a continued, likely accelerate...

Haakon Hop; Tore Haug; Stig Falk-Petersen

2011-09-01T23:59:59.000Z

291

Red Sea during the Last Glacial Maximum: Implications for sea level reconstruction  

E-Print Network (OSTI)

. Gildor,1 and W. R. Peltier2 Received 13 February 2007; revised 29 July 2007; accepted 30 October 2007 based on the ICE-5G (VM2) model. Citation: Biton, E., H. Gildor, and W. R. Peltier (2008), Red Sea sea level reduction for the LGM interval range between approximately 120 m [Peltier, 2004, 2002

Peltier, W. Richard

292

PALeo-constraints on SEA-level rise (PALSEA) -a PAGES/IMAGES working group  

E-Print Network (OSTI)

PALeo-constraints on SEA-level rise (PALSEA) - a PAGES/IMAGES working group Coordinators: Mark for the reduction in ice sheets and subsequent rise in sea level over the next century are highly uncertain rise. Interglacial sea levels constrain the global sensitivity of sea-level to radiative forcing. Well

Siddall, Mark

293

Mars gets new icing  

Science Journals Connector (OSTI)

... north pole. Here the ice-cap shrinks each summer as a veneer of carbon dioxide burns off, revealing plenty of less volatile water ice beneath. The ice-cap at the ... beneath. The ice-cap at the red planet's south pole is covered with strange pits, called Swiss-cheese features. They have flat bottoms and steep sides; some are ...

Philip Ball

2003-02-14T23:59:59.000Z

294

Modeling Wind-Driven Circulation and Landfast Ice-Edge Processes during Polynya Events in Northern Baffin Bay  

E-Print Network (OSTI)

attached to the ice edge that is generated during strong northerly wind events. Primary production heat polynyas. In the former case, sea ice is continuously advected by winds and/or currents away fromModeling Wind-Driven Circulation and Landfast Ice-Edge Processes during Polynya Events in Northern

295

www.sciencemag.org SCIENCE VOL 302 14 NOVEMBER 2003 1111 Algal Clues to Antarctic Ice Shelf Ages  

E-Print Network (OSTI)

the Perspective by Wolff) present an ice core record of methanesulfonic acid, a species produced by algae livingwww.sciencemag.org SCIENCE VOL 302 14 NOVEMBER 2003 1111 Algal Clues to Antarctic Ice Shelf Ages The naturally high variability of sea ice extent in Antarctica and the short duration of instrumental records

Nori, Franco

296

The ocean's role in polar climate change: asymmetric Arctic and Antarctic responses to greenhouse gas and ozone forcing  

Science Journals Connector (OSTI)

...Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, , 77 Massachusetts Avenue, Cambridge, MA 02139, USA 2 Department...albedo feedback operates in summer when solar radiation is maximal. Where sea ice is...

2014-01-01T23:59:59.000Z

297

A 22-Year Dataset of Surface Longwave Fluxes in the Arctic  

NLE Websites -- All DOE Office Websites (Extended Search)

22-Year Dataset of Surface Longwave Fluxes 22-Year Dataset of Surface Longwave Fluxes in the Arctic J. Francis and J. Secora Institute of Marine and Coastal Sciences Rutgers University New Brunswick, New Jersey Abstract Downwelling longwave fluxes (DLFs) over the Arctic surface have been generated from 22.5 years of radiances and retrievals from the TIROS (television and infrared observation satellite) operational vertical sounder (TOVS). The flux retrieval algorithm has been validated and improved using surface- based radiation and cloud observations from the Atmospheric Radiation Measurement (ARM) North Slope of Alaska (NSA) site in Barrow, Alaska, and from the Surface Heat Balance of the Arctic (SHEBA) field program (1997-98) in the Beaufort Sea. The DLF product is presented on a 100 x

298

Federal Energy Management Program: Greenhouse Gas Basics  

NLE Websites -- All DOE Office Websites (Extended Search)

Basics Basics Federal agencies must understand key terms and management basics to successfully manage greenhouse gas (GHG) emissions. Graphic of the top half of earth depicting current arctic sea ice. A red outline depicts arctic sea ice boundaries in 1979. Current arctic sea ice is shown roughly 50% smaller than the 1979 depiction. Greenhouse gases correlate directly to global warming, which impacts arctic sea ice. This image shows current arctic sea ice formation. The red outline depicts arctic sea ice boundaries in 1979. Greenhouse gases are trace gases in the lower atmosphere that trap heat through a natural process called the "greenhouse effect." This process keeps the planet habitable. International research has linked human activities to a rapid increase in GHG concentrations in the atmosphere, contributing to major shifts in the global climate.

299

PUBLISHED ONLINE: 11 JULY 2010 | DOI: 10.1038/NGEO901 Patterns of Indian Ocean sea-level change in a  

E-Print Network (OSTI)

continental ice1 . However, sea-level rise is not globally uniform1­5 . Regional sea levels can be affected Ocean sea level with climate-model simulations, to identify a distinct spatial pattern of sea-level rise on some coasts and islands in the Indian Ocean. Global mean sea-level rise since the 1950s has been

Fasullo, John

300

ScienceMatters Arctic Ocean  

E-Print Network (OSTI)

into the ocean. The growth of marine algae is highest at the ice edge during the brief summer period when the ice of the marine food web, providing the main source of nourishment for fish and marine mammals. Algae also remove at molecular-level manufacturing as attempts to assemble LEGO pieces while wearing boxing gloves

Pedersen, Tom

Note: This page contains sample records for the topic "arctic sea ice" 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

-density set by salinity -non-linear equation of state  

E-Print Network (OSTI)

COLD - density set by salinity - non-linear equation of state SEA-ICE - forcings - insulator Evaporation-Precipitation - order 2000 km3/yr freshwater Ice Export through the Fram Strait - equivalent Arctic Sea-Ice Climatology http://nsidc.org MINIMUM (September) MAXIMUM (February) #12;Arctic Surface Air

Washington at Seattle, University of

302

Brittle Failure of Ice  

Science Journals Connector (OSTI)

...accompanied by very little global damage (Smith and Schulson...polar marine transits and to global climate (Maykut 1982; Johanessen...and are stabilized against buckling by a potential energy gradient...constructing structures, pipelines for arctic conditions. American...

Erland M. Schulson

303

E-Print Network 3.0 - absorption scale ice Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

99, NO. C12, PAGES 25,281-25,294, DECEMBER 15, 1994 The effect of sea ice on the solar energy budget in the Summary: in the solar energy absorption and partitioning in the entire...

304

Investigation of coastal dynamics of the Antarctic Ice Sheet using sequential Radarsat SAR images  

E-Print Network (OSTI)

Increasing human activities have brought about a global warming trend, and cause global sea level rise. Investigations of variations in coastal margins of Antarctica and in the glacial dynamics of the Antarctic Ice Sheet provide useful diagnostic...

Tang, Sheng-Jung

2009-05-15T23:59:59.000Z

305

Sandia National Laboratories: NASA Ames Research Center in northern...  

NLE Websites -- All DOE Office Websites (Extended Search)

NASA Ames Research Center in northern California Sierra Unmanned Aerial Vehicle to Begin Flights Over Arctic Sea Ice On July 25, 2013, in Climate, Customers & Partners, Global,...

306

E-Print Network 3.0 - astro-venture atmospheric sciences Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

2005. Provided images and input for web site for 5... in wintertime Arctic sea ice. Advisor: Jody W. Deming Masters of Science, Oceanography ... Source: Washington at Seattle,...

307

Information fusion for estimation of summer MIZ ice concentration from SAR imagery  

E-Print Network (OSTI)

In this paper we define the concept of information fusion and show how we used it to estimate summer sea ice concentration in the marginal ice zone (MIZ) from single-channel SAR satellite imagery, We used data about melt stage, wind speed...

Haverkamp, Donna S.; Tsatsoulis, Costas

1999-05-01T23:59:59.000Z

308

Acoustic and seismic measurement of ice processes  

Science Journals Connector (OSTI)

As sea ice responds to environmental forcing it deforms leading to the storage of strain energy. When mechanical failure occurs most of this energy is dissipated through fracturing but a small portion radiates as seismic and acoustic waves. These waves provide useful signals for sensing the failure process in the ice. In a recent ice mechanics experiment conducted north of Prudhoe Bay (SIMI ’94) a large number of ice failure events were observed using geophone and hydrophone arrays. Preliminary results are presented including a large?scale tensile fracture test and naturally occurring sounds near a closing lead. For the artificial fracture the acoustic signals allow determination of cracking rate fracture advance and crack propagation velocities. The overall crack propagation speed is estimated to be of order 50 m?s?1; maximum cracking activities occur prior to peak loading. In the second data set the naturally occurring stick?slip process was observed as two ice sheets moved against each other in a closing lead. A wide range of frequencies can occur simultaneously representing different components of the sliding and slipping mechanisms.

David M. Farmer; Yunbo Xie

1995-01-01T23:59:59.000Z

309

UnderSea Solutions, Inc. Arctic AUV Proposal  

E-Print Network (OSTI)

track. The AUV must be functional in a harsh marine environment, user friendly with respect to data for nose cone Lift points Hull Form The hydrodynamic form of the AUV determines the propulsion energy

Wood, Stephen L.

310

Pliocene palaeoceanography of the Arctic Ocean and subarctic seas  

Science Journals Connector (OSTI)

...America and Eurasia (e.g. Fronval Jansen 1996; Mudelsee Raymo 2005). Since the...strongly discontinuous records (Fronval Jansen 1996; Haug et al. 2005). In the Atlantic...that persisted until ca 3Ma (Fronval Jansen 1996). St. John Krissek (2002) assumed...

2009-01-01T23:59:59.000Z

311

The sea-level conundrum: case studies from palaeo-archives  

E-Print Network (OSTI)

level; climate change; ice sheets. Background The eustatic sea-level (ESL) rise predicted for the 21st., 2005). IPCC Fourth Assessment Report (AR4) projections of 21st-century sea-level rise included attempted to predict sea-level rise over the 21st century using a simple response model which assumes

Törnqvist, Torbjörn E.

312

The microbial fate of carbon in high-latitude seas: Impact of the microbial loop on oceanic uptake of CO{sub 2}  

SciTech Connect

This dissertation examines pelagic microbial processes in high-latitude seas, how they affect regional and global carbon cycling, and how they might respond to hypothesized changes in climate. Critical to these interests is the effect of cold temperature on bacterial activity. Also important is the extent to which marine biological processes in general impact the inorganic carbon cycle. The study area is the Northeast Water (NEW) Polynya, a seasonally-recurrent opening in the permanent ice situated over the northeastern Greenland continental shelf. This work was part of an international, multi-disciplinary research project studying carbon cycling in the coastal Arctic. The first chapter describes a simple model which links a complex marine food web to a simplified ocean and atmosphere. The second chapter investigates the inorganic carbon inventory of the summertime NEW Polynya surface waters to establish the effect of biological processes on the air-sea pCO{sub 2} gradient. The third and fourth chapters use a kinetic approach to examine microbial activities in the NEW Polynya as a function of temperature and dissolved organic substrate concentration, testing the so-called Pomeroy hypothesis that microbial activity is disproportionately reduced at low environmental temperatures owing to increased organic substrate requirements. Together, the suite of data collected on microbial activities, cell size, and grazing pressure suggest how unique survival strategies adopted by an active population of high-latitude bacteria may contribute to, rather than detract from, an efficient biological carbon pump.

Yager, P.L.

1996-12-31T23:59:59.000Z

313

Next-Generation Ecosystem Experiments NGEE Arctic Quarterly Report  

E-Print Network (OSTI)

to improve representation of the Arctic in Earth System Models Topography influences snow cover, thermal

314

E-Print Network 3.0 - arctic sediments svalbard Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: for transporting lead into the Arctic. We collected a large selection of sediment cores from around the Arctic... enters the Arctic Ocean from the Fram Strait, between...

315

E-Print Network 3.0 - arctic european russia Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

12;NOAA Arctic Tiger Team Laura K. Furgione Deputy Assistant Administrator National Weather Service... Evidence of a Changing Arctic NOAA's Evolving Role in the Arctic...

316

E-Print Network 3.0 - arctic energy technology Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

12;NOAA Arctic Tiger Team Laura K. Furgione Deputy Assistant Administrator National Weather Service... Evidence of a Changing Arctic NOAA's Evolving Role in the Arctic...

317

E-Print Network 3.0 - arctic spring site Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

12;NOAA Arctic Tiger Team Laura K. Furgione Deputy Assistant Administrator National Weather Service... Evidence of a Changing Arctic NOAA's Evolving Role in the Arctic...

318

Sea Mammals:  

Office of Legacy Management (LM)

Sea Mammals: Sea Mammals: Resources and Population The nanrine mammal resources nenr Amchitkn Island consist o f sea otters, harbor seals, and Steller sea 1io11s as perntnnent residents, northern fur seals that migrate througla Aleutian passes, and wholes nnd porpoises in the surrouttdiftg seas. Archaeological and historic data on nni~nnl populations indicate that the species present tlten were the same as those present today nnd dentoxstrate tlre contii~ued importawe that sea mammals haue played in tlre island's history. Sen otter observations nnd surueys made front 1935 to 1974 document the recovery of this species Carl E. Abegglen* U. S. Fish and It'ildlife Service, Division of I\'ildlife Research, Anchorage, Alaska from near extinction at the start of the twentieth century.

319

Ice-ocean boundary conditions for coupled models Gavin A. Schmidt  

E-Print Network (OSTI)

that must be simulated in any comprehensive earth system model incorporating ocean, atmosphere, sea ice different groups (a central fo- cus in the ongoing PRogramme for Integrated earth System Modelling (PRISM) and Earth System Modeling Framework (ESMF) projects). This paper addresses developments in coupling at sea

Bitz, Cecilia

320

sea pipeline  

Science Journals Connector (OSTI)

sea pipeline, sealine, marine (pipe)line, undersea (pipe)line, submarine (pipe)line, subsea (pipe)line ? Untermeer(es)(rohr)leitung f

2014-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

Mobile Ice Nucleus Spectrometer  

SciTech Connect

This first year report presents results from a computational fluid dynamics (CFD) study to assess the flow and temperature profiles within the mobile ice nucleus spectrometer.

Kulkarni, Gourihar R.; Kok, G. L.

2012-05-07T23:59:59.000Z

322

Alaskan Ice Road Water Supplies Augmented by Snow Barriers  

NLE Websites -- All DOE Office Websites (Extended Search)

6, 2013 6, 2013 Alaskan Ice Road Water Supplies Augmented by Snow Barriers Washington, D.C. - In a project supported and managed by the Office of Fossil Energy's National Energy Technology Laboratory (NETL), researchers at the University of Alaska Fairbanks have demonstrated that the use of artificial barriers-snow fences-can significantly increase the amount of fresh water supplies in Arctic lakes at a fraction of the cost of bringing in water from nearby lakes. The results promise to enhance environmentally sound development of Alaska's natural resources, lowering the costs of building ice roads used for exploring for oil and natural gas in Alaska. They could also be used to help augment fresh water supplies at remote villages. Researcher Joel Bailey measures the density of the snow in this snow pit to determine the amount of snow in the drift and the water equivalent of the snow drift.

323

Development of a Seismic Snow Streamer and Use of Multi-Offset Reflection for Determining Glacier Ice Properties  

E-Print Network (OSTI)

Glaciers and ice sheets are important to climate research due to their role in controlling worldwide weather and temperature patterns as well as their potential impact in sea level rise. Because of this, scientists are ...

Velez Gonzalez, Jose Antonio

2012-12-31T23:59:59.000Z

324

Springtime Arctic haze contributions of submicron organic particles from European and Asian combustion sources  

E-Print Network (OSTI)

The composition of Arctic aerosol, especially during the springtime Arctic haze, may play an important role in the radiative balance of the Arctic. The contribution of organic components to Arctic haze has only recently ...

Kroll, Jesse

325

Earth'sFuture Sea level rise and its coastal impacts  

E-Print Network (OSTI)

Earth'sFuture Sea level rise and its coastal impacts Anny Cazenave1 and Gonéri Le Cozannet2 1LEGOS and land ice melt in turn are causing sea level to rise. Sea level rise and its impacts on coastal zones and public. In this review paper, we summarize the most up-to-date knowledge about sea level rise and its

Paris-Sud XI, Université de

326

Sea-Level and Climate Change: Should I Sell My Shore House? Kenneth G. Miller,  

E-Print Network (OSTI)

sea-level rise and land subsidence (sinking). We conclude the following: - The rate of global sea-level. - Global sea-level is predicted to rise by >80 cm (2.6 ft) by 2100 due to thermal expansion of seawater and melting of ice sheets. - Sea-level rise on the U.S. East Coast will exceed 1 m (~3 ft) by 2100 due

327

corded in ice cores is not steady; instead it comes in a series of pulses-just what you  

E-Print Network (OSTI)

corded in ice cores is not steady; instead it comes in a series of pulses-just what you would depths of between 500 and 700 meters-just where the ice-age drop in sea level might have decomposed How Many Genes Had to Change to Produce Corn? Recent molecular data suggest that mutations in as few

Doebley, John

328

BLM Arctic Field Office | Open Energy Information  

Open Energy Info (EERE)

vast area covered by the Arctic Field Office includes the 23-million-acre National Petroleum Reserve - Alaska, the largest block of federal land managed by a single agency. The...

329

Data/model integration for vertical mixing in the stable Arctic boundary layer  

SciTech Connect

This is the final report of a short Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). Data on atmospheric trace constituents and the vertical structure of stratus clouds from a 1996 expedition to the central Arctic reveal mechanisms of vertical mixing that have not been observed in mid-latitudes. Time series of the altitude and thickness of summer arctic stratus have been observed using an elastic backscatter lidar aboard an icebreaker. With the ship moored to the pack ice during 14 data collection stations and the lidar staring vertically, the time series represent advected cloud fields. The lidar data reveal a significant amount of vertical undulation in the clouds, strongly suggestive of traveling waves in the buoyantly damped atmosphere that predominates in the high Arctic. Concurrent observations of trace gases associated with the natural sulfur cycle (dimethyl sulfide, SO{sub 2}, NH{sub 3}, H{sub 2}O{sub 2}) and aerosols show evidence of vertical mixing events that coincide with a characteristic signature in the cloud field that may be called dropout or lift out. A segment of a cloud deck appears to be relocated from the otherwise quasicontinuous layer to another altitude a few hundred meters lower or higher. Atmospheric models have been applied to identify the mechanism that cause the dropout phenomenon and connect it dynamically to the surface layer mixing.

Barr, S.; ReVelle, D.O.; Kao, C.Y.J.; Bigg, E.K.

1998-12-31T23:59:59.000Z

330

Fish Smother Under Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

Smother Under Ice Smother Under Ice A BULLETIN FOR THE CHICAGO PUBLIC SCHOOLS DESIGNED FOR INCLUSION IN THE WEEKLY ANNOUNCEMENT SENT OUT FROM THE OFFICE OF SUPT. WILLIAM H. JOHNSON Clayton F. Smith, President Roberts Mann, Superintendent of Conservation February 1, 1945 Nature Bulletin No. 1 FOREST PRESERVE NOTES Grown-ups, who used to kive on a farm or in a small town, are fond of talking about the old-fashioned winters "when I was a boy" and the winters that grandpa used to tell about. Well, one would have to go back a long, long time to find a winter as severe as this one. FISH SMOTHER UNDER ICE Lakes and streams breathe the same as living things. When they are covered with ice and snow they cannot get air and they much hold their breath until the ice thaws. While they are holding their breath the oxygen in the water is gradually used up by the living things sealed up in it -- fish, plants "bugs", snails, and hosts of microscopic life. If the ice lasts long enough, these living things die one after another as each kind reaches the point where it cannot stand any further oxygen starvation. Sometimes temporary relief is given by rains and melting snow that bring fresh, serated water under the ice, but no method of artificial respiration has been found that works. Sometimes, too, when water plants get enough sunlight through clear ice they produce small amounts of oxygen and delay the suffocation of the fish, etc.; but when snow and cloudy ice cuts off the light this does not happen.

331

Long?term variations of ice breaking noise in Antarctica  

Science Journals Connector (OSTI)

Numerous low frequency transient signals arriving from Antarctica have been detected in five?year sea noise recordings in 2002?2006 at the hydroacoustic listening station deployed off Cape Leeuwin in Western Australia as part of the International Monitoring System of the Comprehensive Nuclear?Test?Ban Treaty. The majority of these signals consist of a single arrival of mode 1 which dominates the higher modes and undergoes strong frequency dispersion due to long?range propagation in the polar ocean environment. These signals are believed to be emitted primarily by ice rifting and breaking events on the Antarctic shelf. Several regions along the Antarctic coast associated with certain glaciers and ice tongues were found to persistently be much more active in generatingicenoise than other parts of the Antarctic shelf. An analysis of long?term changes in the frequency of occurrence of ice events showed noticeable seasonal cycles but did not reveal any significant interannual variations against the background of short?term fluctuations. Some of the ice events detected at the Cape Leeuwin station were also identified in sea noise recordings made on autonomous acoustic loggers deployed on the Antarctic shelf which allowed us to investigate characteristics of the acoustic signals from ice events near their origins.

Alexander Gavrilov; Binghui Li

2008-01-01T23:59:59.000Z

332

G. Arfeuille L. A. Mysak L.-B. Tremblay Simulation of the interannual variability of the wind-driven  

E-Print Network (OSTI)

) Reanalysis data is used to produce the year-to- year variations in the sea-ice circulation and thickness. We-driven Arctic sea-ice cover during 1958±1998 Received: 27 January 1999 / Accepted: 8 July 1999 Abstract A thermodynamic-dynamic sea-ice model based on a granular material rheology developed by Tremblay and Mysak

333

Global Temperature in 2011, Trends, and Prospects 18 January 2012  

E-Print Network (OSTI)

resolution. 1 Arctic sea ice insulates the atmosphere from the ocean, allowing the atmosphere to become very cold, as much as tens of degrees below freezing. If warming yields thinner sea ice and areas of open substantially as the sea ice cover thins, even though the ocean (water) temperature changes little

334

The Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

and where Arctic ice is rapidly melting. These changes are felt globally through sea level rise and could possibly lead to abrupt climate changes due to collapse of large ice...

335

Offshore Oil in the Alaskan Arctic  

Science Journals Connector (OSTI)

...artificially thick-ened ice platforms have been used suc-cessfully...over the winter and ice platforms melt during the summer...providing a drill-ing platform has been the construction...necessary, ice-breaking semi-submersibles are a possible solution...

W. F. Weeks; G. Weller

1984-07-27T23:59:59.000Z

336

Offshore Oil in the Alaskan Arctic  

Science Journals Connector (OSTI)

...thick-ened ice platforms have been used...winter and ice platforms melt during the...a drill-ing platform has been the construction...ice-breaking semi-submersibles are a possible...replaced with production systems that are...

W. F. Weeks; G. Weller

1984-07-27T23:59:59.000Z

337

Woodgate, Arctic Ocean Circulation Page 1:13 February 2012 ARCTIC OCEAN CIRCULATION  

E-Print Network (OSTI)

deep) Bering Strait, through which about 0.8Sv (1Sv=106 m3 s-1 ) of water enters the Arctic. Properties: 206-221-3268 Accepted for Nature Education Knowledge Project, May 2012 Welcome to the Arctic Ocean Circle, contains deep (~ 4500m) basins, the slowest spreading ridges in the world, and about 15

Washington at Seattle, University of

338

Ice plug employed on subsea pipeline bend during repair  

SciTech Connect

The first controlled-temperature ice plug in the bend of an offshore gas trunkline has been carried out for Phillips Petroleum Co. Norway on its Norpipe A.S. platform in the German sector of the North Sea. The procedure was part of a subsea valve repair operation. The ice plug was successfully formed offshore and tested to a differential pressure of 1,450 psi. Repair of two valves required only 5 days during which time gas production was operating at close to 50--60% via the platform bypass, says the service company. The paper discusses the procedure.

NONE

1997-12-22T23:59:59.000Z

339

DIFFRACTION STUDIES OF ICE Alexe BOSAK  

E-Print Network (OSTI)

Ic 28o halo observed at least 7 times since 1629 octahedral particles of ice Ic! #12;Cooling downDIFFRACTION STUDIES OF ICE Alexeï BOSAK European Synchrotron Radiation Facility #12;Ice as the mild threat ice Ih the only ice in the crust #12;Ice as the absolute weapon Ice IX : melting point 45.8°C

Titov, Anatoly

340

A Multivariate Baltic Sea Environmental Index Joachim W. Dippner, Georgs Kornilovs,  

E-Print Network (OSTI)

, and pronounced heterogeneity in ecosystem variables. The horizontal salinity gradient is responsible: the Arctic Oscillation index, the salinity between 120 and 200 m in the Gotland Sea, the integrated river by a closed basin circulation (Voss et al. 2005) strong horizontal as well as vertical salinity gradi- ents

Dippner, Joachim W.

Note: This page contains sample records for the topic "arctic sea ice" 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

The Viscosity of Ice  

Science Journals Connector (OSTI)

11 September 1908 research-article The Viscosity of Ice R. M. Deeley The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of...

1908-01-01T23:59:59.000Z

342

Revised estimates of Greenland ice sheet thinning histories based on ice-core records  

Science Journals Connector (OSTI)

Ice core records were recently used to infer elevation changes of the Greenland ice sheet throughout the Holocene. The inferred elevation changes show a significantly greater elevation reduction than those output from numerical models, bringing into question the accuracy of the model-based reconstructions and, to some extent, the estimated elevation histories. A key component of the ice core analysis involved removing the influence of vertical surface motion on the ?18O signal measured from the Agassiz and Renland ice caps. We re-visit the original analysis with the intent to determine if the use of more accurate land uplift curves can account for some of the above noted discrepancy. To improve on the original analysis, we apply a geophysical model of glacial isostatic adjustment calibrated to sea-level records from the Queen Elizabeth Islands and Greenland to calculate the influence of land height changes on the ?18O signal from the two ice cores. This procedure is complicated by the fact that ?18O contained in Agassiz ice is influenced by land height changes distant from the ice cap and so selecting a single location at which to compute the land height signal is not possible. Uncertainty in this selection is further complicated by the possible influence of Innuitian ice during the early Holocene (12–8 ka BP). Our results indicate that a more accurate treatment of the uplift correction leads to elevation histories that are, in general, shifted down relative to the original curves at GRIP, NGRIP, DYE-3 and Camp Century. In addition, compared to the original analysis, the 1-? uncertainty is considerably larger at GRIP and NGRIP. These changes reduce the data-model discrepancy reported by Vinther et al. (2009) at GRIP, NGRIP, DYE-3 and Camp Century. A more accurate treatment of isostasy and surface loading also acts to improve the data-model fits such that the residuals at all four sites for the period 8 ka BP to present are significantly reduced compared to the original analysis. Prior to 8 ka BP, the possible influence of Innuitian ice on the inferred elevation histories prevents a meaningful comparison.

Benoit S. Lecavalier; Glenn A. Milne; Bo M. Vinther; David A. Fisher; Arthur S. Dyke; Matthew J.R. Simpson

2013-01-01T23:59:59.000Z

343

National Strategy for the Arctic Region | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

to provide input on the National Strategy for the Arctic Region 10-year plan to develop renewable energy resources in the Arctic region. DOE supports the goals and activities of...

344

National Strategy for the Arctic Region Stakeholder Outreach...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the Arctic Region Stakeholder Outreach Meeting: Kotzebue November 5, 2014 10:00AM to 12:00PM AKST Kotzebue, Alaska Northwest Arctic Heritage Center 171 3rd Ave. Kotzebue, AK 9975...

345

National Strategy for the Arctic Region Tribal Consultation Session...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

for the Arctic Region Tribal Consultation Session: Kotzebue November 5, 2014 1:30PM to 3:30PM AKST Kotzebue, Alaska Northwest Arctic Heritage Center 171 3rd Ave. Kotzebue, AK 9975...

346

Tuktoyaktuk : responsive strategies for a new Arctic urbanism  

E-Print Network (OSTI)

The Canadian Arctic is facing a set of compounding crises that will drastically impact the future of its coastal frontier. At a time when climate change is having a detrimental impact on the Arctic landscape, Northern ...

Ritchot, Pamela (Pamela Rae)

2011-01-01T23:59:59.000Z

347

ICE Raids: Compounding Production, Contradiction, and Capitalism  

E-Print Network (OSTI)

America: Factories and ICE Raids Produce Citizens Americansubjects. ICE raids (re)produce workers’ contradictoryfactories and ICE raids have come to produce immigrant

Reas, Elizabeth I

2009-01-01T23:59:59.000Z

348

Carbon fixation by phytoplankton in high Arctic lakes: Implications of ...  

Science Journals Connector (OSTI)

ABSTRACT: Photosynthesis vs. irradiance relationships were determined for phytoplankton communities from seven lakes in the Canadian high Arctic, including ...

349

Late pleistocene ice age scenarios based on observational evidence  

SciTech Connect

Ice age scenarios for the last glacial interglacial cycle, based on observations of Boyle and Keigwin concerning the North Atlantic thermohaline circulation and of Barnola et al. concerning atmospheric CO[sub 2] variations derived from the Vostok ice cores, are herein analyzed. Northern Hemisphere continental ice sheets are simulated with an energy balance model (EBM) that is asynchronously coupled to vertically integrated ice sheets models based on the Glen flow law. The EBM includes both a realistic land-sea distribution and temperature-albedo feedback and is driven with orbital variations of effective solar insolation. With the addition of atmospheric CO[sub 2] and ocean heat flux variations, but not in their absence, a complete collapse is obtained for the Eurasian ice sheet but not for the North American ice sheet. We therefore suggest that further feedback mechanisms, perhaps involving more accurate modeling of the dynamics of the mostly marine-based Laurentide complex appears necessary to explain termination I. 96 refs., 12 figs., 2 tabs.

DeBlonde, G. (Canada Center for Remote Sensing, Ottawa, Ontario (Canada)); Peltier, W.R. (Univ. of Toronto, Ontario (Canada))

1993-04-01T23:59:59.000Z

350

NGEE Arctic Webcam Photographs, Barrow Environmental Observatory, Barrow, Alaska  

DOE Data Explorer (OSTI)

The NGEE Arctic Webcam (PTZ Camera) captures two views of seasonal transitions from its generally south-facing position on a tower located at the Barrow Environmental Observatory near Barrow, Alaska. Images are captured every 30 minutes. Historical images are available for download. The camera is operated by the U.S. DOE sponsored Next Generation Ecosystem Experiments - Arctic (NGEE Arctic) project.

Bob Busey; Larry Hinzman

351

Ice cream headache  

NLE Websites -- All DOE Office Websites (Extended Search)

Ice cream headache Ice cream headache Name: fath Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: What causes an "ice cream headache"? Are they dangerous? What would happen if I induced an ice cream headache when I had a regular headache? Replies: This is really a neat question. I am certainly no expert on headaches, but it has a lot to do blood circulation in the sinuses and around and within the brain. Why do some people get them easily and other seem resistant? The cold might restrict blood flow which is the basis for the problem. An Ice cream headache can be turned "on" or "off" by adjusting the rate of consumption, Slurpees work best, so really cold stuff enhances the effect. Are there stages: cold sensation, lingering headache, subsiding headache, warming, etc? Does the cold actually create similar headache "conditions" or does the brain confused cause it cannot directly feel pain? The difference in people is probably due to differences in arteriole branching and general circulation. In my experience smokers get worse headaches than nonsmokers of the same age. Do you find a similar trend? I am trying to stimulate discussion!

352

Ice Heating Up Cold Clouds | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Ice Heating Up Cold Clouds Ice Heating Up Cold Clouds In a heated battle, ice crystals win the competition for cloud water vapor The mighty cloud ice crystal appears deceptively...

353

Arctic Methane, Hydrates, and Global Climate  

NLE Websites -- All DOE Office Websites (Extended Search)

Arctic Methane, Hydrates, and Global Climate Arctic Methane, Hydrates, and Global Climate Speaker(s): Matthew T. Reagan Date: March 17, 2010 - 12:00pm Location: 90-3122 Paleooceanographic evidence has been used to postulate that methane may have had a significant role in regulating past climate. However, the behavior of contemporary permafrost deposits and oceanic methane hydrate deposits subjected to rapid temperature changes, like those now occurring in the arctic and those predicted under future climate change scenarios, has only recently been investigated. A recent expedition to the west coast of Spitsbergen discovered substantial methane gas plumes exiting the seafloor at depths that correspond to the upper limit of the receding gas hydrate stability zone. It has been suggested that these plumes may be the

354

Recent Mid-Scale Research on Using Oil Herding Surfactants to Thicken Oil Slicks in Pack Ice for In-Situ Burning  

Science Journals Connector (OSTI)

A series of burn tests at the scale of 50 m2 with herders and crude oil in a pit containing broken sea ice is planned for ... be presented and the plans for the November burn tests will be discussed.

I. Buist; S. Potter; L. Zabilansky; A. Guarino…

2008-01-01T23:59:59.000Z

355

Natural and anthropogenic radionuclides in the marginal seas of Siberia: implications for the fate and removal of pollutants  

E-Print Network (OSTI)

for the estimation of the residence time of river water entering the Kara Sea. The model-derived scavenging parameters for 114 Th and "OPb clearly indicate particle concentrations, influenced by resuspension, ice melt, and continental runoff, primarily control...

Schwantes, Jon Michael

1996-01-01T23:59:59.000Z

356

GEOPHYSICAL RESEARCH LETTERS, VOL. 24, NO.12, PAGES 1503-1506, JUNE 15, 1997 Spatial variations in the rate of sea level rise caused by  

E-Print Network (OSTI)

in the rate of sea level rise caused by the present-day melting of glaciers and ice sheets Clinton P. Conrad. Becausemostlong duration tide gaugesarein.the northernhemisphere,if the sources of sea level rise are unbalanced between the two hemispheres,estimates of global sea level rise could be in error by 10 to 20%. Individual

Conrad, Clint

357

Process-model Simulations of Cloud Albedo Enhancement by Aerosols in the Arctic  

SciTech Connect

A cloud-resolving model is used to simulate the effectiveness of Arctic marine cloud brightening via injection of cloud condensation nuclei (CCN). An updated cloud microphysical scheme is employed, with prognostic CCN and cloud particle numbers in both liquid and mixed-phase marine low clouds. Injection of CCN into the marine boundary layer can delay the collapse of the boundary layer and increase low-cloud albedo. Because nearly all of the albedo effects are in the liquid phase due to the removal of ice water by snowfall when ice processes are involved, albedo increases are stronger for pure liquid clouds than mixed-phase clouds. Liquid precipitation can be suppressed by CCN injection, whereas ice precipitation (snow) is affected less; thus the effectiveness of brightening mixed-phase clouds is lower than for liquid-only clouds. CCN injection into a clean regime results in a greater albedo increase than injection into a polluted regime, consistent with current knowledge about aerosol-cloud interactions. Unlike previous studies investigating warm clouds, dynamical changes in circulation due to precipitation changes are small.

Kravitz, Benjamin S.; Wang, Hailong; Rasch, Philip J.; Morrison, H.; Solomon, Amy

2014-11-17T23:59:59.000Z

358

Molecules, ices and astronomy  

Science Journals Connector (OSTI)

......research-article Features Molecules, ices and astronomy David A Williams, Wendy A Brown, Stephen...brown@ucl.ac.uk Dept of Physics and Astronomy, University College London, Gower Street...of Chemistry, UCL Dept of Physics and Astronomy, UCL Over the past 40 years, about......

D A Williams; W A Brown; S D Price; J M C Rawlings; S Viti

2007-02-01T23:59:59.000Z

359

ice | proceedings Forensic Engineering  

E-Print Network (OSTI)

ice | proceedings Forensic Engineering Volume 165 Issue FE4 November 2012 Forensic Engineering or economic damage. Research and practice papers are sought on traditional or modern forensic engineering, design and construction. Topics covered also include research and education best practice in forensic

Mottram, Toby

360

Oil exploration ramps up in US Arctic  

Science Journals Connector (OSTI)

... run in US Arctic waters since 2000, and could mark the start of the first offshore commercial drilling in the American north, although it would take another decade to establish ... although it would take another decade to establish production wells. However, many fear that offshore drilling in the challenging conditions of the north, and around sensitive and understudied ecological ...

Nicola Jones

2012-06-26T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

656 VOLUME 14J O U R N A L O F C L I M A T E 2001 American Meteorological Society  

E-Print Network (OSTI)

oscillatory ocean-only mode. The insulating capacity of the variable sea ice has a negligible effect656 VOLUME 14J O U R N A L O F C L I M A T E 2001 American Meteorological Society The Role of Ice The simulated influence of Arctic sea ice on the variability of the North Atlantic climate is discussed

362

+++ CIVIL WAR IN SOUTH SUDAN CLAIMS THOUSANDS OF LIVES +++ NUMBER OF DIVORCES IN IRAN TRIPLES +++ AT LEAST 15 DEAD  

E-Print Network (OSTI)

, the ice insulates the relatively warm water from the much colder air; without this "cap," the ocean would? In the case of the North Pole, at least, whose cover consists entirely of sea ice, it is an essential question reliable records have been available, was the September minimum ­ the expansion of the Arctic Sea ice

363

Formation of high density amorphous ice by decompression of ice VII and ice VIII at 135 K  

E-Print Network (OSTI)

of ice Ih and are found to have very similar structures. By cooling liquid water along the water trans- forms into ice VIII when cooled . With this in mind Klug et al. were able to produce low densityFormation of high density amorphous ice by decompression of ice VII and ice VIII at 135 K Carl Mc

McBride, Carl

364

Image Content Engine (ICE)  

SciTech Connect

The Image Content Engine (ICE) is being developed to provide cueing assistance to human image analysts faced with increasingly large and intractable amounts of image data. The ICE architecture includes user configurable feature extraction pipelines which produce intermediate feature vector and match surface files which can then be accessed by interactive relational queries. Application of the feature extraction algorithms to large collections of images may be extremely time consuming and is launched as a batch job on a Linux cluster. The query interface accesses only the intermediate files and returns candidate hits nearly instantaneously. Queries may be posed for individual objects or collections. The query interface prompts the user for feedback, and applies relevance feedback algorithms to revise the feature vector weighting and focus on relevant search results. Examples of feature extraction and both model-based and search-by-example queries are presented.

Brase, J M

2007-03-26T23:59:59.000Z

365

Hidden force floating ice  

E-Print Network (OSTI)

Because of the segmental specific-heat disparity of the hydrogen bond (O:H-O) and the Coulomb repulsion between oxygen ions, cooling elongates the O:H-O bond at freezing by stretching its containing angle and shortening the H-O bond with an association of larger O:H elongation, which makes ice less dense than water, allowing it to float.

Chang Q. Sun

2015-01-17T23:59:59.000Z

366

E-Print Network 3.0 - arctic pond ecosystems Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

& Permafrost Salinity Vegetation Arctic... Storage Change P + Gin -(Q + ET + Gout) S Rn - G Le + H 12;Arctic Land Water Cycle: key features Source: Houser, Paul R....

367

E-Print Network 3.0 - arctic slope annual Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

& Permafrost Salinity Vegetation Arctic... Storage Change P + Gin -(Q + ET + Gout) S Rn - G Le + H 12;Arctic Land Water Cycle: key features Source: Houser, Paul R....

368

E-Print Network 3.0 - arctic ecosystem final Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

& Permafrost Salinity Vegetation Arctic... Storage Change P + Gin -(Q + ET + Gout) S Rn - G Le + H 12;Arctic Land Water Cycle: key features Source: Houser, Paul R....

369

E-Print Network 3.0 - arctic ocean freshwater Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

8. Forecasting Environmental Resilience of Arctic Freshwater Resources... and persistent ocean currents to feed energy ... Source: Wagner, Diane - Institute of Arctic Biology,...

370

Indirect and Semi-Direct Aerosol Campaign: The Impact of Arctic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Aerosol Campaign: The Impact of Arctic Aerosols on Clouds . Abstract: A comprehensive dataset of microphysical and radiative properties of aerosols and clouds in the arctic...

371

E-Print Network 3.0 - alesund arctic base Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

at these locations. The Arctic, in particular, has seen concentrated aircraft- and ship-based... and Radiation The Arctic Study of Aerosol, Clouds and Radiation (ASTAR)...

372

E-Print Network 3.0 - arctic valley findings Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

measurements Summary: : The results of this research will find use in improving models of weather and climate in the Arctic... PROJECT SUMMARY Cloud properties across the Arctic...

373

E-Print Network 3.0 - arctic cooling silentium Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

12;Abstract The Arctic is melting ...fast. 12;IMPACTS OF A WARMING ARCTIC... 's Greenhouse Effect Thesur face cools by radiating heat energyupward. ... Source: Zender, Charles -...

374

Scottish Landform Example No. 35 Subglacial Landforms of the Tweed Palaeo-Ice  

E-Print Network (OSTI)

EVEREST, TOM BRADWELL & NICK GOLLEDGE British Geological Survey, West Mains Road, Edinburgh EH9 3LA established in the literature, such as the Irish Sea (Knight et al., 1999), Strathmore (Linton, 1959; Merritt et al., 2003), and Moray Firth (Merritt et al., 1995) ice streams. Others are less well established

375

ALUMINUM DISTRIBUTIONSIN THE EURASIAN BASIN OF THE ARCTIC OCEAN  

E-Print Network (OSTI)

ALUMINUM DISTRIBUTIONSIN THE EURASIAN BASIN OF THE ARCTIC OCEAN A THESISSUBMITTEDTO THE GRADUATE Section(1994)cruiseswere analyzed for their aluminum (Al) content; these two data setswere then combined

Luther, Douglas S.

376

Potential Oil Production from the Coastal Plain of the Arctic...  

Gasoline and Diesel Fuel Update (EIA)

Potential Oil Production from the Coastal Plain of the Arctic National Wildlife Refuge: Updated Assessment 2. Analysis Discussion Resource Assessment The USGS most recent...

377

Potential Oil Production from the Coastal Plain of the Arctic...  

U.S. Energy Information Administration (EIA) Indexed Site

Potential Oil Production from the Coastal Plain of the Arctic National Wildlife Refuge: Updated Assessment Executive Summary This Service Report, Potential Oil Production from the...

378

Ice Core Evidence for Extensive Melting of the Greenland Ice Sheet in the Last Interglacial  

Science Journals Connector (OSTI)

...the Canadian Arctic Islands and Camp Century and Dye-3 in Greenland suggests...the Canadian Arctic Islands and Camp Century and Dye-3 in Greenland suggests...the Canadian Arctic Islands and Camp Century and Dye-3 in Greenland suggests...

R. M. Koerner

1989-05-26T23:59:59.000Z

379

California Sea Grant 1 California Sea Grant  

E-Print Network (OSTI)

California Sea Grant 1 California Sea Grant Strategic Plan 2010­2013 #12;2 Strategic Plan 2010­2013 The National Sea Grant College Program, U.S. Department of Commerce, National Oceanic and Atmospheric Administration, supported this publication under NOAA grant number NA08OAR4170669, project number C/P-1 through

Jaffe, Jules

380

Fire and Ice Issue 9  

E-Print Network (OSTI)

£s FIRE AND ICE # 9 IB FIRE ICE #9 A Blake/Avon slash fanzine r Available from: Kathleen Resch POBox 1766 Temple City, CA 91780 Kathleener@aol.com FIRE AND ICE # 9copyright © May, 2005 by Kathleen Resch for the contributors. No reprints... or reproduction without the written permission ofthe author/artist This is an amateur publication and is not p intended to infringe upon the rights ofany holders of"Blake's 7" copyrights. FIRE AND ICE 9 TABLE OF CONTENTS LEAVING ROOM 101 by Nova 2 TOO MANY...

Multiple Contributors

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

Therapeutic Hypothermia: Protective Cooling Using Medical Ice...  

NLE Websites -- All DOE Office Websites (Extended Search)

Therapeutic Hypothermia: Protective Cooling Using Medical Ice Slurry Technology available for licensing: Proprietary method and equipment for making an ice slurry coolant to induce...

382

Methane hydrates: Fire from ice  

Science Journals Connector (OSTI)

... Attempts to compare these methods began last January. Most usable hydrate deposits probably lie offshore, but it is cheaper to begin with those beneath the Arctic. One of the ... As well as abundant hydrates, the site has similar geology and reservoir conditions to many offshore deposits, making it an ideal and accessible testing ground. Those involved say that they ...

David Adam

2002-08-29T23:59:59.000Z

383

Global warming triggers the loss of a key Arctic refugium  

Science Journals Connector (OSTI)

...research-article Research articles 1001 69 60 Global warming triggers the loss of a key Arctic...change that is being driven by global warming. In stark contrast to the amplified...planet's last Arctic refugia from global warming, largely because of the moderating...

2013-01-01T23:59:59.000Z

384

ARM - Measurement - Cloud ice particle  

NLE Websites -- All DOE Office Websites (Extended Search)

ice particle ice particle 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 : Cloud ice particle Particles made of ice found in clouds. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments MET : Surface Meteorological Instrumentation Field Campaign Instruments REPLICATOR : Balloon-borne Ice Crystal Replicator CPI : Cloud Particle Imager CVI-AIR : Counterflow Virtual Impactor LEARJET : Lear Jet PARTIMG : Particle imager UAV-PROTEUS-MICRO : Proteus Cloud Microphysics Instruments

385

E-Print Network 3.0 - arctic fjord sediments Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

sediments Search Powered by Explorit Topic List Advanced Search Sample search results for: arctic fjord sediments...

386

E-Print Network 3.0 - arctic ocean sediments Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

sediments Search Powered by Explorit Topic List Advanced Search Sample search results for: arctic ocean sediments...

387

E-Print Network 3.0 - arctic gas pipeline Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

pipeline Search Powered by Explorit Topic List Advanced Search Sample search results for: arctic gas pipeline...

388

E-Print Network 3.0 - arctic fjord sediment Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

sediment Search Powered by Explorit Topic List Advanced Search Sample search results for: arctic fjord sediment...

389

E-Print Network 3.0 - arctic ocean sediment Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

sediment Search Powered by Explorit Topic List Advanced Search Sample search results for: arctic ocean sediment...

390

North Sea oil: Women not at sea  

Science Journals Connector (OSTI)

... in the North Sea Oil Industry, which claims that the recruitment of skilled personnel for offshore geological work is regulated by managerial chauvinism, and discriminates against women.

Hugh Barnes

1985-01-24T23:59:59.000Z

391

Arctic Lower Troposphere Observed Structure (ALTOS)  

NLE Websites -- All DOE Office Websites (Extended Search)

Lower Troposphere Observed Structure (ALTOS) Lower Troposphere Observed Structure (ALTOS) will raise and lower a heavily instrumented tethered balloon system at regular intervals in the lower 2 kilometers of the atmosphere at Oliktok Point. Data obtained during the ALTOS campaign will provide a statistically significant set of observed in situ cloud properties for validating retrieval algorithms and help scientists reduce the uncertainty in the radiative forcing and heating rates on hourly time scales. The data will also help researchers gain a better understanding of the driving processes that control climate changes and determine the state of the Arctic climate system. Collaborators Science Team: The Pennsylvania State University, Stratton

392

Comment on ``A quantitative framework for interpretation of basal ice facies formed by ice  

E-Print Network (OSTI)

heave would be expected to produce were revealed beneath the Kamb Ice Stream by the pioneering boreholeComment on ``A quantitative framework for interpretation of basal ice facies formed by ice quantitative framework for interpretation of basal ice facies formed by ice accretion over subglacial sediment

Worster, M. Grae

393

Ice coring on Vestfonna Ice Cap Contact person: John Moore (jmoore@ulapland.fi).  

E-Print Network (OSTI)

reach bedrock about 4 tons of ice will need to be flown out to Longyearbyen in insulated boxesIce coring on Vestfonna Ice Cap Contact person: John Moore (jmoore@ulapland.fi). Participants, Polish Academy of Science glowacki@igf.edu.pl Science: Ice cores from the glaciers outside the main ice

Moore, John

394

ORIGINAL PAPER A bacterial ice-binding protein from the Vostok ice core  

E-Print Network (OSTI)

to produce a 54 kDa ice-binding protein (GenBank EU694412) that is similar to ice-binding proteins previously- vival at sub-zero temperatures by producing proteins that bind to and inhibit the growth of ice crystalsORIGINAL PAPER A bacterial ice-binding protein from the Vostok ice core James A. Raymond Ã? Brent C

Christner, Brent C.

395

The Effects of Rotation and Ice Shelf Topography on Frazil-Laden Ice Shelf Water Plumes  

E-Print Network (OSTI)

, Antarctica. In addition, it is found that the model only produces reasonable marine ice formation rates whenThe Effects of Rotation and Ice Shelf Topography on Frazil-Laden Ice Shelf Water Plumes PAUL R of the dynamics and thermodynamics of a plume of meltwater at the base of an ice shelf is presented. Such ice

Feltham, Daniel

396

IceCube Collaboration Governance Document IceCube Collaboration Governance Document  

E-Print Network (OSTI)

IceCube Collaboration Governance Document IceCube Collaboration Governance Document Revision 8.1, November 21, 2014 Page 1 of 20 #12;IceCube Collaboration Governance Document IceCube Collaboration Governance Document Revision 8.1, November 21, 2014 Collaboration Objectives The IceCube Collaboration (the

Saffman, Mark

397

Climatic Ice Core Records from the Tropical Quelccaya Ice Cap  

Science Journals Connector (OSTI)

...DANSGAARD, W, LATE CENOZOIC GLACIA 37 ( 1971 ). DANSGAARD, W, ONE THOUSAND CENTURIES OF CLIMATIC RECORD FROM CAMP CENTURY ON GREENLAND ICE SHEET, SCIENCE 166 : 377 ( 1969 ). DANSGAARD, W, STABLE ISOTOPES IN PRECIPITATION, TELLUS 16...

LONNIE G. THOMPSON; STEFAN HASTENRATH; BENJAMÍN MORALES ARNAO

1979-03-23T23:59:59.000Z

398

Fire and Ice Issue 2  

E-Print Network (OSTI)

. fipl cpn r FLASHPOINT A flame that can't be seen, cloaked in black and silver and disdain, born of anger and of love no longer dared. An ice-encrusted soul, dormant in the aftermath of accusations piled like snow against the heated passions of a man who...^ $$% i&l /P^ \\0 rffej FIRE AND ICE AVAILABLE FROM Kathleen Resch PO Box 1766 Temple City, CA 91780 FIRE AND ICE II TABLE OF CONTENTS COVER by Phoenix FRONTISPIECE by Gayle Feyrer "Flashpoint" by Rachel Duncan 1 PEDESTAL by Thomas 2 "A Damn Fine...

Multiple Contributors

1993-01-01T23:59:59.000Z

399

Fire and Ice Issue 7  

E-Print Network (OSTI)

       ' FIRE and ICE # 7 -p! jP) FIRE AND ICE VII Available from: Kathleen Resch PO Box 1766 Temple City, CA 91780 Kathleener@aol.com © May 2002by Kathleen Reschfor the contributors. No reprints or reproduction without the written... permission of the author/artist. Thisis an amateur publication and is not in tended to infringe upon the rights ofTerryNation, BBC-TV or any others. i - J FIRE AND ICE VI Table of Contents HALF A LOAF by Linda Norman 1 GROUNDHOG LAY by Predatrlx 5 PLAYTIME...

Multiple Contributors

2002-01-01T23:59:59.000Z

400

Ice mechanics and risks to offshore structures  

SciTech Connect

This volume brings together the results of all salient research development in ice engineering, from smaller scale to full size tests on ice strength and ice mechanics which is essential criteria for the design of safe, cost effective structures. Much of the data has been released from confidential industry files and thus allows, for the first time, a full appraisal of the subject. Contents include - Types and Distribution of Ice, Mechanical Properties, Measurements of Ice-Structure Interaction, and Analysis of Ice Failure and Design Ice Loads. This work is completed with a full literary review and subject index.

Sanderson, T.J.O.

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

SEAS Safety Program SEAS SAFETY PROGRAM 2013-2014  

E-Print Network (OSTI)

SEAS Safety Program SEAS SAFETY PROGRAM 2013-2014 Program Structure and Responsibilities Dr. Anas Chalah #12;SEAS Safety Program SEAS Safety Program Structure We have developed a great model of collaboration among · EHSEM · SEAS Safety Program · SEAS Facilities which accounts for the regulatory component

402

SEAS Safety Program SEAS SAFETY PROGRAM 2012-2103  

E-Print Network (OSTI)

SEAS Safety Program SEAS SAFETY PROGRAM 2012-2103 Program Structure and Responsibilities Dr. Anas Chalah #12;SEAS Safety Program SEAS Safety Program Structure We have developed a great model of collaboration among · EHSEM · SEAS Safety Program · SEAS Facilities which accounts for the regulatory component

403

The Rising Sea  

E-Print Network (OSTI)

in the thick of a sea level rise. After reading the evidencepredictive figure for ocean level rise by the turn of thethat a 7-foot (2 m) sea level rise by the year 2100 should

Miller, Ryder W.

2011-01-01T23:59:59.000Z

404

What stiffens sea cucumbers?  

Science Journals Connector (OSTI)

... Oceanography, La Jolla, California, examine the amazing properties of the connective tissues of the humble sea cucumber Cucumaria frondosa. ...

Henry Gee

2000-05-16T23:59:59.000Z

405

An experimental and theoretical study of the ice accretion process during artificial and natural icing conditions  

E-Print Network (OSTI)

Real-time measurements of ice growth during artificial and natural icing conditions were conducted using an ultrasonic pulse-echo technique. This technique allows ice thickness to be measured with an accuracy of ?0.5 mm; ...

Kirby, Mark Samuel

1986-01-01T23:59:59.000Z

406

Climate Drives Sea Change  

Science Journals Connector (OSTI)

...Labrador Sea to the Mid-Atlantic Bight (3–5). This freshening...outflow began to exit the Canadian Basin and enter the Labrador Sea via...Labrador Sea to the Mid-Atlantic Bight. The first pulse of low-salinity...and reached the Mid-Atlantic Bight by 1991. Several years later...

Charles H. Greene; Andrew J. Pershing

2007-02-23T23:59:59.000Z

407

Download  

Science Journals Connector (OSTI)

Natural desalination and equi- librium salinity profile of perennial sea ice. J. Geo- phys. Res. 73: 125 l-l 257. -. 1990. Structure and dynamics of the Arctic Ocean.

1999-12-20T23:59:59.000Z

408

ARM - Facility News Article  

NLE Websites -- All DOE Office Websites (Extended Search)

the lesson plan called "Bringing Climate Change into the Classroom" covers the greenhouse effect, sea ice, adaptation, and climate change in the Arctic. The MyHealthySchool.com...

409

High-Resolution Monitoring of Internal Layers Over the Greenland Ice Sheet P. Kanagaratnam, S.P. Gogineni  

E-Print Network (OSTI)

been attributed to the melting of mountain glaciers among other causes. The mass balance of the glacial ice plays an important role in the rise of the Earth's sea level. A key variable in assessing the mass. Accumulation data are sparse, and there are large uncertainties in existing accumulation rate maps derived from

Kansas, University of

410

Ice Nuclei in Marine Air: Biogenic Particles or Dust?  

SciTech Connect

Ice nuclei impact clouds, but their sources and distribution in the atmosphere are still not well known. Particularly little attention has been paid to IN sources in marine environments, although evidence from field studies suggests that IN populations in remote marine regions may be dominated by primary biogenic particles associated with sea spray. In this exploratory model study, we aim to bring attention to this long-neglected topic and identify promising target regions for future field campaigns. We assess the likely global distribution of marine biogenic ice nuclei using a combination of historical observations, satellite data and model output. By comparing simulated marine biogenic immersion IN distributions and dust immersion IN distributions, we predict strong regional differences in the importance of marine biogenic IN relative to dust IN. Our analysis suggests that marine biogenic IN are most likely to play a dominant role in determining IN concentrations in near-surface-air over the Southern Ocean, so future field campaigns aimed at investigating marine biogenic IN should target that region. Climate related changes in the abundance and emission of biogenic marine IN could affect marine cloud properties, thereby introducing previously unconsidered feedbacks that influence the hydrological cycle and the Earth’s energy balance. Furthermore, marine biogenic IN may be an important aspect to consider in proposals for marine cloud brightening by artificial sea spray production.

Burrows, Susannah M.; Hoose, C.; Poschl, U.; Lawrence, M.

2013-01-11T23:59:59.000Z

411

Nighttime Cloud Detection Over the Arctic Using AVHRR Data  

NLE Websites -- All DOE Office Websites (Extended Search)

Cloud Detection Over the Arctic Cloud Detection Over the Arctic Using AVHRR Data D. A. Spangenberg, D. R. Doelling, and V. Chakrapani Analytical Services & Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Hampton, Virginia T. Uttal National Oceanic and Atmospheric Administration Boulder, Colorado Introduction Clouds play an important role in the Arctic energy budget. The magnitude and significance of the radiative impact of polar clouds, however, are not well known. Polar nocturnal clouds are often warmer or at the same temperature as the background snow surface, complicating cloud detection. Also, these clouds tend to be thin, with lower emittances than clouds occurring during the summer. Using only the infrared (IR) channels of satellite data to characterize cloud amount and distribution in the Arctic is

412

A New Look at the Summer Arctic Frontal Zone  

Science Journals Connector (OSTI)

A notable characteristic of the summertime Arctic is the existence of a narrow band of strong horizontal temperature gradients spanning the coastlines of Siberia, Alaska, and western Canada that extends through a considerable depth of the ...

Alex Crawford; Mark Serreze

413

Intensification of Geostrophic Currents in the Canada Basin, Arctic Ocean  

Science Journals Connector (OSTI)

Continuous sampling of upper-ocean hydrographic data in the Canada Basin from various sources spanning from 2003 through 2011 provides an unprecedented opportunity to observe changes occurring in a major feature of the Arctic Ocean. In a 112-km-...

Miles G. McPhee

2013-05-01T23:59:59.000Z

414

National Strategy for the Arctic Region Stakeholder Outreach Meeting: Kotzebue  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well...

415

National Strategy for the Arctic Region Stakeholder Outreach Meeting: Barrow  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well...

416

National Strategy for the Arctic Region Stakeholder Outreach Meeting: Nome  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well...

417

National Strategy for the Arctic Region Stakeholder Outreach Meeting: Bethel  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well...

418

Transatlantic Policy Options to Address the Rapidly Changing Arctic  

Science Journals Connector (OSTI)

Impacts from rapidly occurring climate change in the Arctic region are creating shifts in economic priorities, especially in the energy, transport, fisheries and tourism sectors. Economic expansion combined with ...

Sandra Cavalieri; R. Andreas Kraemer

2013-01-01T23:59:59.000Z

419

National Strategy for the Arctic Region Tribal Consultation Session: Bethel  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well...

420

National Strategy for the Arctic Tribal Consultation Session: Fairbanks  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well...

Note: This page contains sample records for the topic "arctic sea ice" 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

Mitigation Possibilities in the Energy Sector – An Arctic Perspective  

Science Journals Connector (OSTI)

There are vast utilisable wind energy resources in the Arctic frequently located in ... example in the Mountain areas in Sweden and Norway, and in the Northwest of Russia. Large wind resources are also found in t...

Maria Pettersson

2009-01-01T23:59:59.000Z

422

Past Glacial Activity in the Canadian High Arctic  

Science Journals Connector (OSTI)

...CENTURIES OF CLIMATIC RECORD FROM CAMP CENTURY ON GREENLAND ICE SHEET, SCIENCE...OF TOTAL GAS CONTENT IN ICE AT CAMP CENTURY, NATURE 243 : 283 ( 1973 ). STEHLI...the total gas content from the Camp Century ice core, which suggests that...

J. England; R. S. Bradley

1978-04-21T23:59:59.000Z

423

Ice Energy | Open Energy Information  

Open Energy Info (EERE)

Ice Energy Ice Energy Jump to: navigation, search Logo: Ice Energy Name Ice Energy Address 9351 Eastman Park Drive Place Windsor, Colorado Zip 80550 Sector Renewable energy Product Energy Storage Year founded 2003 Number of employees 51-200 Phone number 970-545-3630 Website http://www.ice-energy.com/ Coordinates 40.4651775°, -104.882° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.4651775,"lon":-104.882,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

424

ARM - Sea Surface and Sea Level  

NLE Websites -- All DOE Office Websites (Extended Search)

at a site over long period of time, typically decades. It is non-periodic tendency of sea level to rise, fall, or remain stationary with time. Typically a trend, technically,...

425

Factors influencing biodiversity and marine animal habitat use in the Bering Sea.  

Science Journals Connector (OSTI)

A combination of active and passive acoustic technology was integrated into NOAA oceanographic moorings at two locations on the eastern Bering Sea shelf. Physical biological and acoustical oceanographic instruments made synoptic measurements of marine mammal presence zooplankton/fish concentrations physical oceanographic processes primary production and sound levels from 2008–2009. Synergistic factors influencing biodiversity and marine animal habitat use were investigated. Observed patterns in the central Bering Sea indicate that ecosystem dynamics and the acoustic environment are strongly driven by sea ice. Marine mammal presence and diversity were tightly coupled to sea ice presence. Bowhead whales and ice seals dominated the acoustic soundscape during the winter and spring whereas geophysical signals dominated during the fall and summer months. Zooplankton abundance was also tightly linked to ice coverage. Time series of acoustic backscattering strength during the winter months indicated that the zooplankton community rapidly responds to short period of open water at a level that equals or exceeds maximum volume backscatter values at other times of the year. Integrated data such as these will be vital in understanding the relationship between marine mammals zooplankton and the physical environment. [Work supported by ONR.

Jennifer L. Miksis?Olds; Jeffrey A. Nystuen

2010-01-01T23:59:59.000Z

426

ICE Solar | Open Energy Information  

Open Energy Info (EERE)

ICE Solar ICE Solar Jump to: navigation, search Name ICE Solar Place Hyderabad, Andhra Pradesh, India Sector Solar Product India-based company focused on solar PV engineering, procurement and construction opportunities. Coordinates 17.6726°, 77.5971° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":17.6726,"lon":77.5971,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

427

Thermal Storage with Ice Harvesting Systems  

E-Print Network (OSTI)

Application of Harvesting Ice Storage Systems. Thermal storage systems are becoming widely accepted techniques for utility load management. This paper discusses the principles of ice harvesting equipment and their application to the multi...

Knebel, D. E.

1986-01-01T23:59:59.000Z

428

LABORATORY INDENTATION TESTS SIMULATING ICE-STRUCTURE INTERACTIONS USING CONE-SHAPED ICE  

E-Print Network (OSTI)

sample protruding from a steel retaining ring (Figure 1). The closing speed and penetration rate test scenario were ice sample type, ice temperature, interaction rate, penetration depth, cone angle cone angle, indentation rate, ice type and temperature, and indenter roughness were varied. All ice

Bruneau, Steve

429

New study details glacier ice loss following ice shelf July 25, 2011  

E-Print Network (OSTI)

and Ted #12;Scambos of the NSIDC produced detailed ice loss maps from 2001 to 2009 for the main tributaryNew study details glacier ice loss following ice shelf collapse July 25, 2011 Contact: Anthony Lane UMBC (410) 455-5793 alane@umbc.edu Katherine Leitzell National Snow and Ice Data Center University

Cambridge, University of

430

Numerical Age Computation of the Antarctic Ice Sheet for Dating Deep Ice Cores  

E-Print Network (OSTI)

Numerical Age Computation of the Antarctic Ice Sheet for Dating Deep Ice Cores Bernd M¨ugge1 for the computation of the age of ice is discussed within the frame of numerical ice sheet modelling. The first method of a numerical diffusion term to stabilize the solution and therefore produces arbitrary results in a near

Calov, Reinhard

431

Gas isotopes in ice reveal a vegetated central Greenland during ice sheet invasion  

E-Print Network (OSTI)

= ) in the silty ice, reaching values as high as 22 mM [Tison et al., 1998]. Ammonium oxalate is produced duringGas isotopes in ice reveal a vegetated central Greenland during ice sheet invasion R. Souchez,1 J prevailing during build-up of the Greenland Ice Sheet (GIS) are not yet established. Here we use results from

Chappellaz, Jérôme

432

The great Arctic oil race begins  

Science Journals Connector (OSTI)

... oil, and up to 30% of its gas — and most of it is offshore. On 17 January, Moe awarded 26 production licences for developed ... . On 17 January, Moe awarded 26 production licences for developed offshore oil areas in the Norwegian and Barents Sea to companies including Statoil, Total, ExxonMobil ...

Quirin Schiermeier

2012-01-31T23:59:59.000Z

433

Fire and Ice Issue 6  

E-Print Network (OSTI)

9#HDIQNV3>IM ".: FIRE AND ICE VI Available from: Kathleen Resch PO Box 1766 Temple City, CA 91780 © October, 2000 by Kathleen Resch for the contributors. No reprints or reproduction without the written permission of the author.../artist. This is an amateur publication and is not intended to infringe upon the rights ofTerry Nation, BBC-TV or any others. FIRE AND ICE VI 1 Table of Contents A DANGEROUS CONCEPT by Nova 1 A FRIEND IN NEED... by Julia Stamford 14 ...IS A FRIEND INDEED by Julia Stamford 19...

Multiple Contributors

2000-01-01T23:59:59.000Z

434

Fire and Ice Issue 3  

E-Print Network (OSTI)

,fpl ^1 FIRE AND ICE Available from: Kathleen Resch PO Box 1766 Temple City,CA 91780 III © May, 1995 by Kathleen Resch for the contributors. No reprints or reproduction without the written permission of the author/artist. This is an amateur... publication and is not intended to infringe upon the rightsof "Blake's 7" copyright holders.. FIRE AND ICE TABLE OF CONTENTS THE GIFT by Pat Terra 1 "innerspace" by Pat Terra 24 WILD, BEAUTIFUL AND DAMNED by Gemini 25 SET THE NIGHT ON FIRE by Riley Cannon 40...

Multiple Contributors

1995-01-01T23:59:59.000Z

435

E-Print Network 3.0 - arctic alaska r4d Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

for: arctic alaska r4d Page: << < 1 2 3 4 5 > >> 1 revised 122010 Alaska Cooperative Fish and Wildlife Research Unit Summary: . 1966. The recreational potential of the Arctic...

436

UPb and geochemical evidence for a Cryogenian magmatic arc in central Novaya Zemlya, Arctic Russia  

E-Print Network (OSTI)

U­Pb and geochemical evidence for a Cryogenian magmatic arc in central Novaya Zemlya, Arctic Russia-0349 Oslo, Norway Introduction The High Arctic of Scandinavia and Russia consists of a collage

Svensen, Henrik

437

An analysis of the carbon balance of the Arctic Basin from 1997 to 2006  

E-Print Network (OSTI)

This study used several model-based tools to analyse the dynamics of the Arctic Basin between 1997 and 2006 as a linked system of land-ocean-atmosphere C exchange. The analysis estimates that terrestrial areas of the Arctic ...

McGUIRE, A. D.

438

E-Print Network 3.0 - arctic freshwater sediments Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

12;2 Holocene sedimentation in the deep Arctic Ocean... prominently in the overall sediment budget of the Arctic Ocean. While a detailed analysis of the processes... with these...

439

E-Print Network 3.0 - arctic tundra vegetation Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

in arctic tundra reduced by long-term nutrient fertilization Michelle C. Mack1... in soil compared with temperate and tropical ecosystems14 . In arctic tundra, as much as 90%...

440

Mechanisms of Decadal Arctic Climate Variability in the Community Climate System Model, Version 2 (CCSM2)  

Science Journals Connector (OSTI)

Several mechanisms have been proposed to explain natural climate variability in the Arctic. These include processes related to the influence of the North Atlantic Oscillation/Arctic Oscillation (NAO/AO), anticyclonic/cyclonic regimes, changes in ...

Hugues Goosse; Marika M. Holland

2005-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

E-Print Network 3.0 - arctic mars analog Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

seal Pup Arctic Barrow Beck et al confirmed... 1 Ringed seal CBD Arctic Deadhorse ARCO; Rugh, D.:NMML; Confirmed-low Fdead pos. shot towed see Source: NOAA Marine Fisheries Review...

442

E-Print Network 3.0 - arctic regions Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

et G... in some Arctic regions in the late 1980s and early 1990s during the decline of industrial activity... of Representatives October 18, 2007 Arctic Climate Effects of Black...

443

E-Print Network 3.0 - arctic food web Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

food web Search Powered by Explorit Topic List Advanced Search Sample search results for: arctic food web Page: << < 1 2 3 4 5 > >> 1 Lesson Plan Arctic Biome Summary: in the...

444

Paleotopography of glacial-age ice sheets  

SciTech Connect

This is technical comment and response to the subject of paleotophography of glacial age ice sheets. The model presented by Peltier reconstructing the paleotopography of glacial age ice sheets has implications for atmospheric general circulation models of ice age climate. In addition, the model suggests that the glacial-age Antarctic Ice Sheet was significantly larger than today`s. The commentor, Edwards, suggests there is a discrepancy between data from Papua New Guinea and the model results.

Edwards, R.L. [Univ. of Minnesota, Minneapolis, MN (United States)

1995-01-27T23:59:59.000Z

445

Coherent radar ice thickness measurements over the Greenland ice sheet  

E-Print Network (OSTI)

systems are designed to use pulse compression techniques and coherent integration to obtain the high sensitivity required to measure the thickness of more than 4 km of cold ice. We used these systems to collect radar data over the interior and margins...

Gogineni, S. Prasad; Tammana, Dilip; Braaten, David A.; Leuschen, C.; Legarsky, J.; Kanagaratnam, P.; Stiles, J.; Allen, C.; Jezek, K.; Akins, T.

2001-12-27T23:59:59.000Z

446

Kay_3034971730_poster.ai  

NLE Websites -- All DOE Office Websites (Extended Search)

radiation anomalies radiation anomalies to the 2007 Arctic sea ice minimum 4. Historical Context for 2007 Loss 5. Implications and Future Work In a warmer world with thinner ice, natural cloud and circulation variability will play an increasingly important role in controlling sea ice extent (Kay et al., GRL). We are currently examining the potential for cloud-circulation-ice feedbacks during the 2007 sea ice loss, monitoring current Arctic ice, cloud, and circulation patterns, and evalu- ating the representation of atmospheric forc- ing on sea ice in NCAR's climate model. Jennifer E. Kay (jenkay@ucar.edu) 1,2 , Tristan L'Ecuyer 2 , Andrew Gettelman 1 , Graeme Stephens 2 , and Chris O'Dell 2 1 National Center for Atmospheric Research, Climate and Global Dynamics 2 Atmospheric Sciences, Colorado State University

447

Ice-Sheet Response to Oceanic Forcing  

Science Journals Connector (OSTI)

...regional-scale ice-ocean simulations suggests that the state-of-Texas...ice shelf’s rapid demise, which would...providing accurate simulation and projection of...observation and modeling indicate that increases...day (38, 39). Rapid melting of ice cliffs...with an emphasis on automated and smart-sensing...

Ian Joughin; Richard B. Alley; David M. Holland

2012-11-30T23:59:59.000Z

448

Inside Sea Salt | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Sea salt particles are emitted into the atmosphere by the action of ocean waves and bubble bursting at the ocean surface. They are ubiquitous in the atmospheric environment....

449

E-Print Network 3.0 - arctic petroleum operators Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Conferences Covered Petroleum Abstracts, HH 101 Summary: PETROLEUM PRODUCTION & EXPLORATION ASSOCIATION LTD. (APPEA) ARCTIC AND MARINE OILSPILL PROGRAM (AMOP... GEOLOGICAL...

450

ORIGINAL PAPER Arctic fisheries catches in Russia, USA, and Canada: baselines  

E-Print Network (OSTI)

ORIGINAL PAPER Arctic fisheries catches in Russia, USA, and Canada: baselines for neglected northern Siberia (Russia), Arctic Alaska (USA), and the Canadian Arctic, extends over seven coastal Large.e., 770,000, 89,000, and 94,000 t by Russia, USA, and Canada, respectively for the same time period

Pauly, Daniel

451

Using Snow Fences to Augument Fresh Water Supplies in Shallow Arctic Lakes  

SciTech Connect

This project was funded by the U.S. Department of Energy, National Energy Technology Laboratory (NETL) to address environmental research questions specifically related to Alaska?s oil and gas natural resources development. The focus of this project was on the environmental issues associated with allocation of water resources for construction of ice roads and ice pads. Earlier NETL projects showed that oil and gas exploration activities in the U.S. Arctic require large amounts of water for ice road and ice pad construction. Traditionally, lakes have been the source of freshwater for this purpose. The distinctive hydrological regime of northern lakes, caused by the presence of ice cover and permafrost, exerts influence on lake water availability in winter. Lakes are covered with ice from October to June, and there is often no water recharge of lakes until snowmelt in early June. After snowmelt, water volumes in the lakes decrease throughout the summer, when water loss due to evaporation is considerably greater than water gained from rainfall. This balance switches in August, when air temperature drops, evaporation decreases, and rain (or snow) is more likely to occur. Some of the summer surface storage deficit in the active layer and surface water bodies (lakes, ponds, wetlands) is recharged during this time. However, if the surface storage deficit is not replenished (for example, precipitation in the fall is low and near?surface soils are dry), lake recharge is directly affected, and water availability for the following winter is reduced. In this study, we used snow fences to augment fresh water supplies in shallow arctic lakes despite unfavorable natural conditions. We implemented snow?control practices to enhance snowdrift accumulation (greater snow water equivalent), which led to increased meltwater production and an extended melting season that resulted in lake recharge despite low precipitation during the years of the experiment. For three years (2009, 2010, and 2011), we selected and monitored two lakes with similar hydrological regimes. Both lakes are located 30 miles south of Prudhoe Bay, Alaska, near Franklin Bluffs. One is an experimental lake, where we installed a snow fence; the other is a control lake, where the natural regime was preserved. The general approach was to compare the hydrologic response of the lake to the snowdrift during the summers of 2010 and 2011 against the ?baseline? conditions in 2009. Highlights of the project included new data on snow transport rates on the Alaska North Slope, an evaluation of the experimental lake?s hydrological response to snowdrift melt, and cost assessment of snowdrift?generated water. High snow transport rates (0.49 kg/s/m) ensured that the snowdrift reached its equilibrium profile by winter's end. Generally, natural snowpack disappeared by the beginning of June in this area. In contrast, snow in the drift lasted through early July, supplying the experimental lake with snowmelt when water in other tundra lakes was decreasing. The experimental lake retained elevated water levels during the entire open?water season. Comparison of lake water volumes during the experiment against the baseline year showed that, by the end of summer, the drift generated by the snow fence had increased lake water volume by at least 21?29%. We estimated water cost at 1.9 cents per gallon during the first year and 0.8 cents per gallon during the second year. This estimate depends on the cost of snow fence construction in remote arctic locations, which we assumed to be at $7.66 per square foot of snow fence frontal area. The snow fence technique was effective in augmenting the supply of lake water during summers 2010 and 2011 despite low rainfall during both summers. Snow fences are a simple, yet an effective, way to replenish tundra lakes with freshwater and increase water availability in winter. This research project was synergetic with the NETL project, "North Slope Decision Support System (NSDSS) for Water Resources Planning and Management." The results

Stuefer, Svetlana

2013-03-31T23:59:59.000Z

452

Medical ice slurry production device  

DOE Patents (OSTI)

The present invention relates to an apparatus for producing sterile ice slurries for medical cooling applications. The apparatus is capable of producing highly loaded slurries suitable for delivery to targeted internal organs of a patient, such as the brain, heart, lungs, stomach, kidneys, pancreas, and others, through medical size diameter tubing. The ice slurry production apparatus includes a slurry production reservoir adapted to contain a volume of a saline solution. A flexible membrane crystallization surface is provided within the slurry production reservoir. The crystallization surface is chilled to a temperature below a freezing point of the saline solution within the reservoir such that ice particles form on the crystallization surface. A deflector in the form of a reciprocating member is provided for periodically distorting the crystallization surface and dislodging the ice particles which form on the crystallization surface. Using reservoir mixing the slurry is conditioned for easy pumping directly out of the production reservoir via medical tubing or delivery through other means such as squeeze bottles, squeeze bags, hypodermic syringes, manual hand delivery, and the like.

Kasza, Kenneth E. (Palos Park, IL); Oras, John (Des Plaines, IL); Son, HyunJin (Naperville, IL)

2008-06-24T23:59:59.000Z

453

Subglacial floods beneath ice sheets  

Science Journals Connector (OSTI)

...depth 100m subject to a geothermal heat flux of 50m2 gives...crude estimate). As well as the present theoretical...Atlantic or to the Gulf of Mexico. One reason for supposing...do not know this very well for a palaeo-ice sheet...and P Gogineni2001High geothermal flow, basal melt, and...

2006-01-01T23:59:59.000Z

454

ARM - Field Campaign - Arctic Winter Water Vapor IOP  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsArctic Winter Water Vapor IOP govCampaignsArctic Winter Water Vapor IOP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Arctic Winter Water Vapor IOP 2004.03.09 - 2004.04.09 Lead Scientist : Ed Westwater Data Availability http://www.etl.noaa.gov/programs/2004/wviop/data will contain quicklooks of all of the data. For data sets, see below. Summary During the IOP, the Ground-based Scanning Radiometer of NOAA/ETL, and the ARM MicroWave Radiometer and Microwave Profiler, yielded excellent data over a range of conditions. In all, angular-scanned and calibrated radiometric data from 22.345 to 380 GHz were taken. The Precipitable Water Vapor varied about an order of magnitude from 1 to 10 mm, and surface temperatures varied from about -10 to -40 deg. Celcius. Vaisala RS90

455

Towards a Characterization of Arctic Mixed-Phase Clouds  

NLE Websites -- All DOE Office Websites (Extended Search)

Towards a Characterization of Arctic Mixed-Phase Clouds Towards a Characterization of Arctic Mixed-Phase Clouds Shupe, Matthew CIRES/NOAA/ETL Kollias, Pavlos Brookhaven National Laboratory Category: Cloud Properties Mixed-phase clouds play a unique role in the Arctic, where the delicate balance of phases in these clouds can have a profound impact on the surface radiation balance and various cloud-atmosphere-radiation-surface feedback processes. A better understanding of these clouds is clearly important and has been a recent objective of the ARM program. To this end, multiple sensors including radar, lidar, and temperature soundings, have been utilized in an automated cloud type classification scheme for clouds observed at the North Slope of Alaska site. The performance of this new algorithm at identifying mixed-phase cloud conditions is compared with an

456

ARM - Publications: Science Team Meeting Documents: An Arctic Springtime  

NLE Websites -- All DOE Office Websites (Extended Search)

An Arctic Springtime Mixed-Phase Cloudy Boundary Layer observed during An Arctic Springtime Mixed-Phase Cloudy Boundary Layer observed during SHEBA Zuidema, Paquita RSMAS/MPO University of Miami Han, Yong NASA Goddard Space Flight Center Intrieri, Janet NOAA/Environmental Technology Laboratory Key, Jeffrey Boston University Lawson, Paul SPEC Inc. Matrosov, Sergey NOAA/Environmental Technology Laboratory Shupe, Matthew CIRES/NOAA/ETL Uttal, Taneil NOAA/Environmental Technology Laboratory The microphysical characteristics, radiative impact, and lifecycle of a long-lived, surface-based mixed-layer, mixed-phase cloud with an average temperature of approximately -20 C are presented and discussed. The cloud was observed during the Surface Heat Budget of the Arctic experiment from May 1 through May 10, 1998. Vertically-resolved properties of the liquid

457

New ice rules for nanoconfined monolayer ice from first principles  

E-Print Network (OSTI)

Understanding the structural tendencies of nanoconfined water is of great interest for nanoscience and biology, where nano/micro-sized objects may be separated by very few layers of water. Here we investigate the properties of ice confined to a quasi-2D monolayer by a featureless, chemically neutral potential, using density-functional theory simulations with a non-local van der Waals density functional. An ab initio random structure search reveals all the energetically competitive monolayer configurations to belong to only two of the previously-identified families, characterized by a square or honeycomb hydrogen-bonding network, respectively. From an in-depth analysis we show that the well-known ice rules for bulk ice need to be revised for the monolayer, with distinct new rules appearing for the two networks. All identified stable phases for both are found to be non-polar (but with a topologically non-trivial texture for the square) and, hence, non-ferroelectric, in contrast to the predictions of empirical f...

Corsetti, Fabiano; Artacho, Emilio

2015-01-01T23:59:59.000Z

458

The Arctic Lower Troposphere Observed Structure (ALTOS) Campaign  

SciTech Connect

The ALTOS campaign focuses on operating a tethered observing system for routine in situ sampling of low-level (< 2 km) Arctic clouds. It has been a long-term hope to fly tethered systems at Barrow, Alaska, but it is clear that the Federal Aviation Administration (FAA) will not permit in-cloud tether systems at Barrow, even if unmanned aerial vehicle (UAV) operations are allowed in the future. We have provided the scientific rationale for long-term, routine in situ measurements of cloud and aerosol properties in the Arctic. The existing restricted air space at Oliktok offers an opportunity to do so.

Verlinde, J

2010-10-18T23:59:59.000Z

459

SEA GRANT PROGRAM SITE VISITS Sea Grant Program Webinar  

E-Print Network (OSTI)

SEA GRANT PROGRAM SITE VISITS Sea Grant Program Webinar May 2014 Sami J. Grimes, NSGO #12;OVERVIEW Sea Grant Evaluation Process Why Site Visits? Results from Previous Site Visit Cycle Overview of How Site Visits are Conducted Site Visit Terms Changes from the Previous Site Visit Cycle Sea Grant

460

Arctic Oil and Natural Gas Potential Philip Budzik U.S. Energy Information Administration  

Gasoline and Diesel Fuel Update (EIA)

Arctic Oil and Natural Gas Potential Arctic Oil and Natural Gas Potential Philip Budzik U.S. Energy Information Administration Office of Integrated Analysis and Forecasting Oil and Gas Division October, 2009 Introduction The Arctic is defined as the Northern hemisphere region located north of the Arctic Circle, the circle of latitude where sunlight is uniquely present or absent for 24 continuous hours on the summer and winter solstices, respectively. The Arctic Circle spans the globe at 66.56° (66°34') north latitude (Figure 1). 1 The Arctic could hold about 22 percent of the world's undiscovered conventional oil and natural gas resources. The prospects for Arctic oil and natural gas production are discussed taking into consideration the nature of the resources, the cost of developing them, and the

Note: This page contains sample records for the topic "arctic sea ice" 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

Co-Editor AMSA 2009 Report Managing Director, Institute of the North  

E-Print Network (OSTI)

~ Intergovernmental Forum AMSA Lead Countries for PAME ~ Canada, Finland & USA AMSA Focus ~ Marine Safety & Marine Executive Summary with Recommendations Introduction Arctic Marine Geography, Climate and Sea Ice History of global weather changes · Oil prices (55-60 to 100-150 USD?) · Major Arctic shipping disasters

Kuligowski, Bob

462

Hydrogen ICE Vehicle Testing Activities  

SciTech Connect

The Advanced Vehicle Testing Activity teamed with Electric Transportation Applications and Arizona Public Service to develop and monitor the operations of the APS Alternative Fuel (Hydrogen) Pilot Plant. The Pilot Plant provides 100% hydrogen, and hydrogen and compressed natural gas (H/CNG)-blended fuels for the evaluation of hydrogen and H/CNG internal combustion engine (ICE) vehicles in controlled and fleet testing environments. Since June 2002, twenty hydrogen and H/CNG vehicles have accumulated 300,000 test miles and 5,700 fueling events. The AVTA is part of the Department of Energy’s FreedomCAR and Vehicle Technologies Program. These testing activities are managed by the Idaho National Laboratory. This paper discusses the Pilot Plant design and monitoring, and hydrogen ICE vehicle testing methods and results.

J. Francfort; D. Karner

2006-04-01T23:59:59.000Z

463

SeaVolt Technologies formerly Sea Power Associates | Open Energy  

Open Energy Info (EERE)

SeaVolt Technologies formerly Sea Power Associates SeaVolt Technologies formerly Sea Power Associates Jump to: navigation, search Name SeaVolt Technologies (formerly Sea Power & Associates) Place San Francisco, California Zip CA 94111 Sector Ocean Product The company's Wave Rider system, which is still in prototype stages, uses buoys and hydraulic pumps to convert the movement of ocean waves into electricity. References SeaVolt Technologies (formerly Sea Power & Associates)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This company is listed in the Marine and Hydrokinetic Technology Database. This article is a stub. You can help OpenEI by expanding it. SeaVolt Technologies (formerly Sea Power & Associates) is a company located in San Francisco, California .

464

FAFCO Ice Storage test report  

SciTech Connect

The Ice Storage Test Facility (ISTF) is designed to test commercial ice storage systems. FAFCO provided a storage tank equipped with coils designed for use with a secondary fluid system. The FAFCO ice storage system was tested over a wide range of operating conditions. Measured system performance during charging showed the ability to freeze the tank fully, storing from 150 to 200 ton-h. However, the charging rate showed significant variations during the latter portion of the charge cycle. During discharge cycles, the storage tank outlet temperature was strongly affected by the discharge rate and tank state of charge. The discharge capacity was dependent upon both the selected discharge rate and maximum allowable tank outlet temperature. Based on these tests, storage tank selection must depend on both charge and discharge conditions. This report describes FAFCO system performance fully under both charging and discharging conditions. While the test results reported here are accurate for the prototype 1990 FAFCO Model 200, currently available FAFCO models incorporate significant design enhancements beyond the Model 200. At least one major modification was instituted as a direct result of the ISTF tests. Such design improvements were one of EPRI`s primary goals in founding the ISTF.

Stovall, T.K.

1993-11-01T23:59:59.000Z

465

Proton Ordering of Cubic Ice Ic: Spectroscopy and Computer Simulations  

E-Print Network (OSTI)

by producing rotational Bjerrum L-defects.1 Ambient-pressure hexagonal ice, ice Ih, shows the lowest produced from ice Ih using hydroxide doping, for example, by freezing a 0.1 M KOH solution. Because ice IhProton Ordering of Cubic Ice Ic: Spectroscopy and Computer Simulations Philipp Geiger, Christoph

Dellago, Christoph

466

Neglecting ice-atmosphere interactions underestimates ice sheet melt in millennial-scale deglaciation simulations  

E-Print Network (OSTI)

produce an interactive coupled integration: Atmospheric dynamics were equilibrated to an initial iceconstant ice albedos. None of these cases is able to produceproduce substantial deglaciation on a realistic timescale is attributed to the use of temporally invariant ice

Pritchard, M. S.; Bush, A. B.; Marshall, S. J.

2008-01-01T23:59:59.000Z

467

Electrolysis of Sea Water  

Science Journals Connector (OSTI)

In implementation of the hydrogen economy, the electrolysis of sea water as the source of hydrogen has been ... . Two options exist for performance of this electrolysis. The first option is to subject the water t...

L. O. Williams

1975-01-01T23:59:59.000Z

468

IceT users' guide and reference.  

SciTech Connect

The Image Composition Engine for Tiles (IceT) is a high-performance sort-last parallel rendering library. In addition to providing accelerated rendering for a standard display, IceT provides the unique ability to generate images for tiled displays. The overall resolution of the display may be several times larger than any viewport that may be rendered by a single machine. This document is an overview of the user interface to IceT.

Moreland, Kenneth D.

2009-06-01T23:59:59.000Z

469

IceT users' guide and reference.  

SciTech Connect

The Image Composition Engine for Tiles (IceT) is a high-performance sort-last parallel rendering library. In addition to providing accelerated rendering for a standard display, IceT provides the unique ability to generate images for tiled displays. The overall resolution of the display may be several times larger than any viewport that may be rendered by a single machine. This document is an overview of the user interface to IceT.

Moreland, Kenneth D.

2011-01-01T23:59:59.000Z

470

Scaling StudieS in arctic SyStem Science  

E-Print Network (OSTI)

Science (jgrebmei@umces.edu) *Lawrence Hamilton, university of new hampshire (lawrence during the april 2006 u.S. fish and Wildlife Service (uSfWS) Walrus Survey (photo by uSfWS/brad benter in 1984 by the arctic research and Policy act (Public law 98-373, July 31, 1984; amended as Public law 101

Wagner, Diane

471

A new way to study the changing Arctic ecosystem  

ScienceCinema (OSTI)

Berkeley Lab scientists Susan Hubbard and Margaret Torn discuss the proposed Next Generation Ecosystem Experiment, which is designed to answer one of the most urgent questions facing researchers today: How will a changing climate impact the Arctic, and how will this in turn impact the planet's climate? More info: http://newscenter.lbl.gov/feature-stories/2011/09/14/alaska-climate-change/

Hubbard, Susan

2013-05-29T23:59:59.000Z

472

National Strategy for the Arctic Region Stakeholder Outreach Meeting: Anchorage  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well as other DOE-related activities in the region. DOE, in conjunction with several other federal agencies, will host seven consultation sessions between October and December 2014.

473

National Strategy for the Arctic Region Tribal Consultation Session: Unalaska  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well as other DOE-related activities in the region. DOE, in conjunction with several other federal agencies, will host seven consultation sessions between October and December 2014.

474

National Strategy for the Arctic Region Tribal Consultation Session: Barrow  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well as other DOE-related activities in the region. DOE, in conjunction with several other federal agencies, will host seven consultation sessions between October and December 2014.

475

National Strategy for the Arctic Region Tribal Consultation Session: Nome  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well as other DOE-related activities in the region. DOE, in conjunction with several other federal agencies, will host seven consultation sessions between October and December 2014.

476

National Strategy for the Arctic Region Tribal Consultation Session: Kotzebue  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well as other DOE-related activities in the region. DOE, in conjunction with several other federal agencies, will host seven consultation sessions between October and December 2014.

477

National Strategy for the Arctic Region Tribal Consultation Session: Anchorage  

Energy.gov (U.S. Department of Energy (DOE))

DOE is seeking input from federally recognized Alaska Native Tribes and Alaska Native corporations on a 10-year implementation plan as part of the National Strategy for the Arctic Region, as well as other DOE-related activities in the region. DOE, in conjunction with several other federal agencies, will host seven consultation sessions between October and December 2014.

478

Viscosity of interfacial water regulates ice nucleation  

SciTech Connect

Ice formation on solid surfaces is an important phenomenon in many fields, such as cloud formation and atmospheric icing, and a key factor for applications in preventing freezing. Here, we report temperature-dependent nucleation rates of ice for hydrophilic and hydrophobic surfaces. The results show that hydrophilic surface presents a lower ice nucleation rate. We develop a strategy to extract the thermodynamic parameters, J{sub 0} and ?, in the context of classical nucleation theory. From the extracted J{sub 0} and ?, we reveal the dominant role played by interfacial water. The results provide an insight into freezing mechanism on solid surfaces.

Li, Kaiyong; Chen, Jing; Zhang, Qiaolan; Zhang, Yifan [Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China) [Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); University of Chinese Academy of Sciences, Beijing 100049 (China); Xu, Shun; Zhou, Xin [School of Physics, University of Chinese Academy of Sciences, Beijing 100049 (China)] [School of Physics, University of Chinese Academy of Sciences, Beijing 100049 (China); Cui, Dapeng; Wang, Jianjun, E-mail: wangj220@iccas.ac.cn; Song, Yanlin [Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)] [Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)

2014-03-10T23:59:59.000Z

479

Relationships between Water Wettability and Ice Adhesion  

E-Print Network (OSTI)

Ice formation and accretion may hinder the operation of many systems critical to national infrastructure, including airplanes, power lines, windmills, ships, and telecommunications equipment. Yet despite the pervasiveness ...

Meuler, Adam J.

480

Ice Formation in Gas-Diffusion Layers  

E-Print Network (OSTI)

porous media does not exist. Once the fundamentals of iceFundamental Issues in Subzero PEMFC Startup and Operation. ” UTC Fuel Cells, DOE

Dursch, Thomas

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "arctic sea ice" 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

City of Eagan ?Civic Ice Arena Renovation  

Energy.gov (U.S. Department of Energy (DOE))

Project objectives: Provide a reliable central ice making and heating system that meets the performance requirements of the owner. Reduce operation and maintenance costs.

482

The last Scandinavian Ice Sheet in northwestern Russia: ice flow patterns and decay dynamics  

E-Print Network (OSTI)

U N C O R R EC TED PR O O F The last Scandinavian Ice Sheet in northwestern Russia: ice flow Sheet in northwestern Russia: ice flow patterns and decay dynamics. Boreas, Vol. 35, pp. xxxÁxxx. Oslo) in northwestern Russia took place after a period of periglacial conditions. Till of the last SIS, Bobrovo till

Ingólfsson, �lafur

483

ARM - Publications: Science Team Meeting Documents  

NLE Websites -- All DOE Office Websites (Extended Search)

The North Slope of Alaska CART and Arctic Change 2002 The North Slope of Alaska CART and Arctic Change 2002 Zak, B.D., Zirzow, J.A., and Einfeld, W., Sandia National Laboratories Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting The North Slope of Alaska/Adjacent Arctic Ocean (NSA/AAO) Cloud and Radiation Testbed (CART), operational since spring of 1998, is maturing just in time for the push to understand the far-reaching changes in the Arctic presently occurring. From the mid 1970s to the mid 1990s, arctic sea ice areal coverage has decreased about 5%, but ice thickness appears to have decreased about 40%. In addition, temperature and salinity patterns in the Arctic Ocean and the associated thermohaline circulation have been affected, as have many other climate-related processes. An Arctic

484

UAV/UAS path planning for ice management information gathering.  

E-Print Network (OSTI)

??The key objective of this work is the proposition of the path planning strategy for unmanned aerial vehicle (UAV) intended for information gathering in Arctic… (more)

Stalmakou, Artsiom

2011-01-01T23:59:59.000Z

485

Hail Ice Damage of Stringer-Stiffened Curved Composite Panels /  

E-Print Network (OSTI)

of projectile SHI. Thus, the ice produces a more large-areaproduce uneven pressure/forces being applied onto the ice

Le, Jacqueline Linh

2013-01-01T23:59:59.000Z

486

SciTech Connect: optimal initial conditions for coupling ice...  

Office of Scientific and Technical Information (OSTI)

Conference: optimal initial conditions for coupling ice sheet models to earth system models Citation Details In-Document Search Title: optimal initial conditions for coupling ice...

487

Effects of ice cover on sediment resuspension and phosphorus ...  

Science Journals Connector (OSTI)

Since ice coverage increased shear resistance, climate-driven absence or shortening of ice-cover would reduce the period for settling of particles and their ...

488

ARM - PI Product - Large Scale Ice Water Path and 3-D Ice Water Content  

NLE Websites -- All DOE Office Websites (Extended Search)

ProductsLarge Scale Ice Water Path and 3-D Ice Water ProductsLarge Scale Ice Water Path and 3-D Ice Water Content Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Large Scale Ice Water Path and 3-D Ice Water Content Site(s) SGP TWP General Description Cloud ice water concentration is one of the most important, yet poorly observed, cloud properties. Developing physical parameterizations used in general circulation models through single-column modeling is one of the key foci of the ARM program. In addition to the vertical profiles of temperature, water vapor and condensed water at the model grids, large-scale horizontal advective tendencies of these variables are also required as forcing terms in the single-column models. Observed horizontal advection of condensed water has not been available because the

489

6, 20592090, 2006 Ice nucleation in  

E-Print Network (OSTI)

intermediate solubility and melting temperatures) nucleated ice at the same temperature as aqueous sulfuric Discussions Ice nucleation in sulfuric acid/organic aerosols: implications for cirrus cloud formation M. R. Beaver1 , M. J. Elrod2 , R. M. Garland1 , and M. A. Tolbert1 1 Department of Chemistry and Biochemistry

Boyer, Edmond

490

Largest Ice-Bank Promotes Load Management  

E-Print Network (OSTI)

California's largest ice-bank storage system is an example of how thermal storage can be applied to both new and existing buildings. At the Union Oil Company in Brea, California, one massive ice-storage system satisfies the air conditioning needs...

Brarmann, G. L.

1983-01-01T23:59:59.000Z

491

Stability of ice-sheet grounding lines  

Science Journals Connector (OSTI)

...81 73 Stability of ice-sheet grounding lines Richard F. Katz 1 * M. Grae Worster 2...ice sheets are sensitive to grounding-line position and variation, characteristics...models. We present a theory for grounding-line dynamics in three spatial dimensions and...

2010-01-01T23:59:59.000Z

492

E-Print Network 3.0 - anti-icing Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Used Unserviceable No de-ice, anti-ice or related 73 - - - Wing tail... De-icing boots - 10 3 0 Wing tail bleed-air anti-ice - 3 0 0 Wing tail electric anti-ice - 2 0...

493

ICE CORE RECORDS | Greenland Stable Isotopes  

Science Journals Connector (OSTI)

Abstract Greenland ice cores contain a wealth of information on past climatic conditions throughout the Northern Hemisphere. A historical perspective on the climatic interpretation of stable isotopes in water and ice is presented in the introduction, while the remainder of the article is devoted to the current interpretation of stable isotope data from Greenland ice cores. The progress in our understanding of stable isotope signals, on timescales from seasons to glacial cycles, is discussed and evaluated through numerous examples from Greenland ice cores. Stable isotope profiles from the Camp Century, Dye-3, GISP2, GRIP, NGRIP, and Renland deep ice cores are emphasized, as they all provide climatic information dating back into the Eemian period.

B.M. Vinther; S.J. Johnsen

2013-01-01T23:59:59.000Z

494

Energy Cost Calculator for Commercial Ice Machines | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ice Machines Ice Machines Energy Cost Calculator for Commercial Ice Machines October 8, 2013 - 2:25pm Addthis Vary capacity size, energy cost, hours of operation, and /or efficiency level. INPUT SECTION Input the following data (if any parameter is missing, calculator will set to default value). Defaults Type of Ice Cube Machine Ice Making Head Self-Contained Remote Condensing Unit Ice Making Head Type of Condenser Air Cooled Water Cooled Air Cooled Ice Harvest Rate (lbs. ice per 24 hrs.) lbs. per 24 hrs. 500 lbs. per 24 hrs. Energy Consumption (per 100 lbs. of ice) kWh 5.5 kWh Quantity of ice machines to be purchased 1 Energy Cost $/kWh 0.06 $/kWh Annual Hours of Operation hrs. 3000 hrs. Calculate Reset OUTPUT SECTION Performance per Ice Cube Machine Your

495

THE STATE OF SEA GRANT 2010  

E-Print Network (OSTI)

THE STATE OF SEA GRANT 2010 Biennial Report to Congress by the National Sea Grant Advisory Board, November 2010 Impacts, challenges and opportunities #12;B The State of Sea Grant 2010: Impacts, Challenges ................................................................................................................................. 5 The Sea Grant Model

496

E-Print Network 3.0 - arctas arctic research Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

and climate. The spring portion of ARCTAS... , and radiative heating in the Arctic. The NASA Langley ... Source: Brookhaven National Laboratory, Environmental Chemistry Division,...

497

E-Print Network 3.0 - arctic microbial ecosystems Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

microbial ecosystems Page: << < 1 2 3 4 5 > >> 1 Microbial ecosystem responses to rapid climate change in the Arctic Summary: COMMENTARY Microbial ecosystem responses to rapid...

498

E-Print Network 3.0 - arctic offshore oil Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

damage assessment. As the Arctic Ocean becomes seasonally passable and tourism, oil and gas... forecasting of ocean storms which have serious potential to threaten marine ......

499

E-Print Network 3.0 - arctic russia sedimentology Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

russia sedimentology Search Powered by Explorit Topic List Advanced Search Sample search results for: arctic russia sedimentology Page: << < 1 2 3 4 5 > >> 1 CURRICULUM VITAE Julie...

500

Biodiversity and phylogeography of Arctic marine fauna: insights from molecular tools  

Science Journals Connector (OSTI)

Incorporation of molecular tools into biodiversity and biogeographic studies can help to address ... among extant populations. Novel discoveries in Arctic marine biodiversity and biogeography are increasing due t...

Sarah Mincks Hardy; Christina M. Carr; Michael Hardman; Dirk Steinke…

2011-03-01T23:59:59.000Z