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Note: This page contains sample records for the topic "north atlantic ocean" from the National Library of EnergyBeta (NLEBeta).
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1

Genetic heterogeneity of Atlantic bluefin tuna caught in the eastern North Atlantic Ocean south of Iceland  

E-Print Network (OSTI)

Genetic heterogeneity of Atlantic bluefin tuna caught in the eastern North Atlantic Ocean south. Genetic heterogeneity of Atlantic bluefin tuna caught in the eastern North Atlantic Ocean south of Iceland. e ICES Journal of Marine Science, 63: 1111e1117. Atlantic bluefin tuna (Thunnus thynnus

Hilton, Eric J.

2

The Arctic Ocean Response to the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

The climatically sensitive zone of the Arctic Ocean lies squarely within the domain of the North Atlantic oscillation (NAO), one of the most robust recurrent modes of atmospheric behavior. However, the specific response of the Arctic to annual ...

R. R. Dickson; T. J. Osborn; J. W. Hurrell; J. Meincke; J. Blindheim; B. Adlandsvik; T. Vinje; G. Alekseev; W. Maslowski

2000-08-01T23:59:59.000Z

3

In a Perfect Ocean: The State of the Fisheries and Ecosystems in the North Atlantic Ocean  

E-Print Network (OSTI)

Review: In a Perfect Ocean: The State of the Fisheriesin the North Atlantic Ocean By Daniel Pauly and Jay MacleanJay Maclean. In a Perfect Ocean: The State of the Fisheries

Miller, Ryder W.

2004-01-01T23:59:59.000Z

4

North Atlantic Decadal Variability: Air–Sea Coupling, Oceanic Memory, and Potential Northern Hemisphere Resonance  

Science Conference Proceedings (OSTI)

In this paper, the causes and mechanisms of North Atlantic decadal variability are explored in a series of coupled ocean–atmosphere simulations. The model captures the major features of the observed North Atlantic decadal variability. The North ...

Lixin Wu; Zhengyu Liu

2005-01-01T23:59:59.000Z

5

Impact of Anomalous Ocean Heat Transport on the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

Coupled atmosphere–ocean dynamics in the North Atlantic is studied by means of a simple model, featuring a baroclinic three-dimensional atmosphere coupled to a slab ocean. Anomalous oceanic heat transport due to wind-driven circulation is ...

Fabio D’Andrea; Arnaud Czaja; John Marshall

2005-12-01T23:59:59.000Z

6

Ocean Gyre Circulation Changes Associated with the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

Observational evidence is presented for interannual to interdecadal variability in the intensity of the North Atlantic gyre circulation related to the atmospheric North Atlantic Oscillation (NAO) patterns. A two-point baroclinic pressure ...

Ruth G. Curry; Michael S. McCartney

2001-12-01T23:59:59.000Z

7

The Role of Ice–Ocean Interactions in the Variability of the North Atlantic Thermohaline Circulation  

Science Conference Proceedings (OSTI)

The simulated influence of Arctic sea ice on the variability of the North Atlantic climate is discussed in the context of a global coupled ice–ocean–atmosphere model. This coupled system incorporates a general circulation ocean model, an ...

Marika M. Holland; Cecilia M. Bitz; Michael Eby; Andrew J. Weaver

2001-03-01T23:59:59.000Z

8

Near-inertial and thermal to atmospheric forcing in the North Atlantic Ocean  

E-Print Network (OSTI)

Observational and modeling techniques are employed to investigate the thermal and inertial upper ocean response to wind and buoyancy forcing in the North Atlantic Ocean. First, the seasonal kinetic energy variability of ...

Silverthorne, Katherine E

2010-01-01T23:59:59.000Z

9

Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean  

Science Conference Proceedings (OSTI)

The response of an atmosphere–ocean general circulation model (AOGCM) to perturbations of freshwater fluxes across the sea surface in the North Atlantic and Southern Ocean is investigated. The purpose of this study is to investigate aspects of ...

Ronald J. Stouffer; Dan Seidov; Bernd J. Haupt

2007-02-01T23:59:59.000Z

10

A Decadal Prediction Case Study: Late Twentieth-Century North Atlantic Ocean Heat Content  

Science Conference Proceedings (OSTI)

An ensemble of initialized decadal prediction (DP) experiments using the Community Climate System Model, version 4 (CCSM4) shows considerable skill at forecasting changes in North Atlantic upper-ocean heat content and surface temperature up to a ...

Stephen Yeager; Alicia Karspeck; Gokhan Danabasoglu; Joe Tribbia; Haiyan Teng

2012-08-01T23:59:59.000Z

11

North Atlantic Winter Climate Regimes: Spatial Asymmetry, Stationarity with Time, and Oceanic Forcing  

Science Conference Proceedings (OSTI)

The observed low-frequency winter atmospheric variability of the North Atlantic–European region and its relationship with global surface oceanic conditions is investigated based on the climate and weather regimes paradigm.

Christophe Cassou; Laurent Terray; James W. Hurrell; Clara Deser

2004-03-01T23:59:59.000Z

12

North Atlantic Interannual Variability in a Coupled Ocean–Atmosphere Model  

Science Conference Proceedings (OSTI)

The primary mode of sea surface temperature variability in the North Atlantic on interannual timescales during winter is examined in a coupled ocean–atmosphere model. The model, developed at die Geophysical Fluid Dynamics Laboratory, is global in ...

Thomas L. Delworth

1996-10-01T23:59:59.000Z

13

Centennial-scale elemental and isotopic variability in the tropical and subtropical North Atlantic Ocean  

E-Print Network (OSTI)

The marine geochemistry of the North Atlantic Ocean varies on decadal to centennial time scales, a consequence of natural and anthropogenic forcing. Surface corals provide a useful geochemical archive to quantify past mixed ...

Reuer, Matthew K. (Matthew Kindt), 1972-

2002-01-01T23:59:59.000Z

14

The Effect of Cold Climate upon North Atlantic Deep Water Formation in a Simple Ocean–Atmosphere Model  

Science Conference Proceedings (OSTI)

The sensitivity of North Atlantic Deep Water formation to variations in mean surface temperature is explored with a meridional-vertical plane ocean model coupled to an energy balance atmosphere. It is found that North Atlantic Deep Water ...

Michael Winton

1997-01-01T23:59:59.000Z

15

Numerical Simulation of the North Atlantic Ocean at 1/10°  

Science Conference Proceedings (OSTI)

In this paper an initial analysis of an 0.1° simulation of the North Atlantic Ocean using a level-coordinate ocean general circulation model forced with realistic winds covering the period 1985–96 is presented. Results are compared to the North ...

Richard D. Smith; Mathew E. Maltrud; Frank O. Bryan; Matthew W. Hecht

2000-07-01T23:59:59.000Z

16

Potential vorticity budgets in the North Atlantic Ocean  

Science Conference Proceedings (OSTI)

This paper focuses on potential vorticity (PV) budgets in the North Atlantic with an emphasis on the wind-driven subtropical gyre. PV is the key dynamical variable of the wind-driven circulation making these budgets are important to understand. PV ...

Bruno Deremble; N. Wienders; W. K. Dewar

17

Rates of Water Mass Formation in the North Atlantic Ocean  

Science Conference Proceedings (OSTI)

North Atlantic air-sea heat and freshwater flux data from several sources are used to estimate the conversion rate of water from one density to another throughout the range of sea surface density. This cross-isopycnal mass flux varies greatly ...

Kevin Speer; Eli Tziperman

1992-01-01T23:59:59.000Z

18

Bailey, D. A., P. B. Rhines, and S. Hkkinen, 2005: Formation and pathways of North Atlantic Deep Water in a coupled ice-ocean model of the Arctic-North Atlantic Oceans. Climate  

E-Print Network (OSTI)

Water in a coupled ice-ocean model of the Arctic-North Atlantic Oceans. Climate Dyn., 25, doi:10.1007/s. P. Shen, World Scientific, Singapore, 360pp. Yeh, S.- W., and B. P. Kirtman, 2005: Pacific decadal

19

The Role of Oceanic Heat Advection in the Evolution of Tropical North and South Atlantic SST Anomalies  

Science Conference Proceedings (OSTI)

The role of horizontal oceanic heat advection in the generation of tropical North and South Atlantic sea surface temperature (SST) anomalies is investigated through an analysis of the oceanic mixed layer heat balance. It is found that SST ...

Gregory R. Foltz; Michael J. McPhaden

2006-12-01T23:59:59.000Z

20

Changes in Temperature and Salinity Tendencies of the Upper Subtropical North Atlantic Ocean at 24.5°N  

Science Conference Proceedings (OSTI)

Strong interest in multidecadal changes in ocean temperature and heat transport has resulted in the occupation of the North Atlantic Ocean hydrographic transect along 24.5°N five times since 1957, more than any other transoceanic section in the ...

Pedro Vélez-Belchí; Alonso Hernández-Guerra; Eugenio Fraile-Nuez; Verónica Benítez-Barrios

2010-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Lagrangian Observations of the Deep Western Boundary Current in the North Atlantic Ocean.  

Science Conference Proceedings (OSTI)

Twenty-six RAFOS floats were deployed in the deep western boundary current (DWBC) of the North Atlantic Ocean between the Grand Banks and Cape Hatteras in 1994–95 and tracked acoustically for up to two years. Half of the floats were launched in ...

Amy S. Bower; Heather D. Hunt

2000-05-01T23:59:59.000Z

22

436 JOURNAL OF CLIMATE VOLUME 20 Climate Response to External Sources of Freshwater: North Atlantic versus the Southern Ocean  

E-Print Network (OSTI)

The response of an atmosphere–ocean general circulation model (AOGCM) to perturbations of freshwater fluxes across the sea surface in the North Atlantic and Southern Ocean is investigated. The purpose of this study is to investigate aspects of the so-called bipolar seesaw where one hemisphere warms and the other cools and vice versa due to changes in the ocean meridional overturning. The experimental design is idealized where 1 Sv (1 Sv ? 10 6 m 3 s ?1) of freshwater is added to the ocean surface for 100 model years and then removed. In one case, the freshwater perturbation is located in the Atlantic Ocean from 50 ° to 70°N. In the second case, it is located south of 60°S in the Southern Ocean. In the case where the North Atlantic surface waters are freshened, the Atlantic thermohaline circulation (THC) and associated northward oceanic heat transport weaken. In the Antarctic surface freshening case, the Atlantic THC is mainly unchanged with a slight weakening toward the end of the integration. This weakening is associated with the spreading of the fresh sea surface anomaly from the Southern Ocean into the rest of the World Ocean. There are two mechanisms that may be responsible for such weakening of the Atlantic THC. First is that the sea surface salinity (SSS) contrast between the North Atlantic and North Pacific is reduced. And, second, when freshwater from the Southern Ocean reaches the high latitudes of the

Ronald J. Stouffer; Dan Seidov; Bernd; J. Haupt

2006-01-01T23:59:59.000Z

23

Stochastic Forcing of Ocean Variability by the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

At middle and high latitudes, the magnitude of stochastic wind stress forcing of the ocean by atmospheric variability on synoptic time scales (i.e., “weather” related variability) is comparable to that of the seasonal cycle. Stochastic forcing ...

Kettyah C. Chhak; Andrew M. Moore; Ralph F. Milliff

2009-01-01T23:59:59.000Z

24

Factors influencing anthropogenic carbon dioxide uptake in the North Atlantic in models of the ocean carbon cycle  

SciTech Connect

The uptake and storage of anthropogenic carbon in the North Atlantic is investigated using different configurations of ocean general circulation/carbon cycle models. We investigate how different representations of the ocean physics in the models, which represent the range of models currently in use, affect the evolution of CO{sub 2} uptake in the North Atlantic. The buffer effect of the ocean carbon system would be expected to reduce ocean CO{sub 2} uptake as the ocean absorbs increasing amounts of CO{sub 2}. We find that the strength of the buffer effect is very dependent on the model ocean state, as it affects both the magnitude and timing of the changes in uptake. The timescale over which uptake of CO{sub 2} in the North Atlantic drops to below preindustrial levels is particularly sensitive to the ocean state which sets the degree of buffering; it is less sensitive to the choice of atmospheric CO{sub 2} forcing scenario. Neglecting physical climate change effects, North Atlantic CO{sub 2} uptake drops below preindustrial levels between 50 and 300 years after stabilisation of atmospheric CO{sub 2} in different model configurations. Storage of anthropogenic carbon in the North Atlantic varies much less among the different model configurations, as differences in ocean transport of dissolved inorganic carbon and uptake of CO{sub 2} compensate each other. This supports the idea that measured inventories of anthropogenic carbon in the real ocean cannot be used to constrain the surface uptake. Including physical climate change effects reduces anthropogenic CO{sub 2} uptake and storage in the North Atlantic further, due to the combined effects of surface warming, increased freshwater input, and a slowdown of the meridional overturning circulation. The timescale over which North Atlantic CO{sub 2} uptake drops to below preindustrial levels is reduced by about one-third, leading to an estimate of this timescale for the real world of about 50 years after the stabilisation of atmospheric CO{sub 2}. In the climate change experiment, a shallowing of the mixed layer depths in the North Atlantic results in a significant reduction in primary production, reducing the potential role for biology in drawing down anthropogenic CO{sub 2}.

Smith, R.S.; Marotzke, J. [Max Planck Institute for Meteorology, Hamburg (Germany)

2008-09-30T23:59:59.000Z

25

An Operational System for Predicting Hurricane-Generated Wind Waves in the North Atlantic Ocean  

Science Conference Proceedings (OSTI)

A new wind–wave prediction model, referred to as the North Atlantic hurricane (NAH) wave model, has been developed at the National Centers for Environmental Prediction (NCEP) to produce forecasts of hurricane-generated waves during the Atlantic ...

Yung Y. Chao; Jose-Henrique G. M. Alves; Hendrik L. Tolman

2005-08-01T23:59:59.000Z

26

Warm-to-Cold Water Conversion in the Northern North Atlantic Ocean  

Science Conference Proceedings (OSTI)

A box Model of warm-to-cold-water conversion in the northern North Atlantic is developed and used to estimate conversion rates, given water mass temperatures, conversion paths and rate of air-sea heat exchange. The northern North Atlantic is ...

M. S. McCartney; L. D. Talley

1984-05-01T23:59:59.000Z

27

Explosive Cyclogenesis over the West-Central North Atlantic Ocean, 1981–84. Part II. Evaluation of LFM Model Performance  

Science Conference Proceedings (OSTI)

A study was made of the performance of the Limited-Area Fine-Mesh (LFM) operational forecasts for cases of explosive cyclogenesis in the west-central North Atlantic Ocean during 1981–84. For 51 instances in which the observed 12-h deepening was ...

Frederick Sanders

1986-11-01T23:59:59.000Z

28

Neutralizing Carbonis Acid in Deep Carbonate Strata Below the North Atlantic Ocean  

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

Road Road P.O. Box 880 Morgantown, WV 26507 304-285-4132 heino.beckert@netl.doe.gov Daniel schrag Principal Investigator Harvard University 20 Oxford Street Cambridge, MA 02138 617-495-7676 schrag@eps.harvard.edu NeutraliziNg CarboNiC aCid iN deep CarboNate Strata below the North atlaNtiC oCeaN Background The eastern seaboard of the United States is the most densely populated region in the country and generates a large fraction of all U.S. anthropogenic carbon dioxide (CO 2 ) emissions. Disposal options for this large volume of CO 2 are limited, and land transport and disposal are difficult due to high population density. From geographical considerations, offshore disposal might seem a reasonable approach. However, a number of technical uncertainties and environmental concerns make

29

Response of a Strongly Eddying Global Ocean to North Atlantic Freshwater Perturbations  

Science Conference Proceedings (OSTI)

The strongly eddying version of the Parallel Ocean Program (POP) is used in two 45-year simulations to investigate the response of the Atlantic Meridional Overturning Circulation (AMOC) to strongly enhanced freshwater input due to Greenland ...

Matthijs den Toom; Henk A. Dijkstra; Wilbert Weijer; Matthew W. Hecht; Mathew E. Maltrud; Erik van Sebille

30

Oceanic Data Analysis Using a General Circulation Model. Part II: A North Atlantic Model  

Science Conference Proceedings (OSTI)

A general circulation model and North Atlantic climatological data of temperature salinity, wind stress, evaporation minus precipitation, and air–sea heat fluxes are used to examine the possibility of solving inverse problems using a full-scale ...

Eli Tziperman; William Carlisle Thacker; Robert Bryan Long; Show-Ming Hwang; Stephen R. Rintoul

1992-12-01T23:59:59.000Z

31

Granger Causality of Coupled Climate Processes: Ocean Feedback on the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

This study uses a Granger causality time series modeling approach to quantitatively diagnose the feedback of daily sea surface temperatures (SSTs) on daily values of the North Atlantic Oscillation (NAO) as simulated by a realistic coupled general ...

Timothy J. Mosedale; David B. Stephenson; Matthew Collins; Terence C. Mills

2006-04-01T23:59:59.000Z

32

Skill in Prediction of Explosive Cyclogenesis over the Western North Atlantic Ocean, 1987/88: A Forecast Checklist and NMC Dynamical Models  

Science Conference Proceedings (OSTI)

Analyses and predictions of explosive cyclogenesis over the western North Atlantic Ocean during the 1987/88 cold season were compared. The analyses were the manual and automated series produced at the National Meteorological Center (NMC). The ...

Frederick Sanders; Eugene P. Auciello

1989-06-01T23:59:59.000Z

33

North Pacific Climate Response to Freshwater Forcing in the Subarctic North Atlantic: Oceanic and Atmospheric Pathways  

Science Conference Proceedings (OSTI)

Sudden changes of the Atlantic meridional overturning circulation (AMOC) are believed to have caused large, abrupt climate changes over many parts of the globe during the last glacial and deglacial period. This study investigates the mechanisms ...

Yuko M. Okumura; Clara Deser; Aixue Hu; Axel Timmermann; Shang-Ping Xie

2009-03-01T23:59:59.000Z

34

Chlorofluorocarbon Constraints on North Atlantic Ventilation  

Science Conference Proceedings (OSTI)

The North Atlantic Ocean vigorously ventilates the ocean interior. Thermocline and deep water masses are exposed to atmospheric contact there and are sequestered in two principal classes: Subtropical Mode Water (STMW: 26.5 ? ?? ? 26.8) and ...

Thomas W. N. Haine; Kelvin J. Richards; Yanli Jia

2003-08-01T23:59:59.000Z

35

Air–Sea Feedback in the North Atlantic and Surface Boundary Conditions for Ocean Models  

Science Conference Proceedings (OSTI)

Extratropical sea surface temperature (SST) and surface turbulent heat flux monthly anomalies in the central and eastern part of the North Atlantic are considered for the period 1952–92 on a 5° × 5° grid. In this region where the mean surface ...

Claude Frankignoul; Arnaud Czaja; Blandine L’Heveder

1998-09-01T23:59:59.000Z

36

Carbon in Atlantic Ocean  

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

in Atlantic Ocean About CARINA NDP-091: CARINA Data Synthesis Project The CARINA Group CARINA Cruise Summary Table and Data CARINA Data Products CARINA Database V1.2 ODV Collection...

37

Annual Cycle of Poleward Heat Transport in the Ocean: Results from High-Resolution Modeling of the North and Equatorial Atlantic  

Science Conference Proceedings (OSTI)

The annual cycle of meridional heat transport in the North and equatorial Atlantic Ocean is studied by means of the high-resolution numerical model that had been developed in recent years as a Community Modeling Effort for the World Ocean ...

Claus W. Böning; Peter Herrmann

1994-01-01T23:59:59.000Z

38

Multidecadal Ocean Temperature and Salinity Variability in the Tropical North Atlantic: Linking with the AMO, AMOC, and Subtropical Cell  

Science Conference Proceedings (OSTI)

The Atlantic multidecadal oscillation (AMO) is characterized by the sea surface warming (cooling) of the entire North Atlantic during its warm (cold) phase. Both observations and most of the phase 5 of the Coupled Model Intercomparison Project (...

Chunzai Wang; Liping Zhang

2013-08-01T23:59:59.000Z

39

Near-Surface Transport Pathways in the North Atlantic Ocean: Looking for Throughput from the Subtropical to the Subpolar Gyre  

Science Conference Proceedings (OSTI)

Motivated by discrepancies between Eulerian transport estimates and the behavior of Lagrangian surface drifters, near-surface transport pathways and processes in the North Atlantic are studied using a combination of data, altimetric surface ...

Irina I. Rypina; Lawrence J. Pratt; M. Susan Lozier

2011-05-01T23:59:59.000Z

40

A Model Comparison: Numerical Simulations of the North and Equatorial Atlantic Oceanic Circulation in Depth and Isopycnic Coordinates  

Science Conference Proceedings (OSTI)

A series of medium-resolution (1°) numerical simulations for the equatorial and North Atlantic basin have been performed with two primitive equation models, one employing depth and the other density as the vertical coordinate. The models have ...

Eric P. Chassignet; Linda T. Smith; Rainer Bleck; Frank O. Bryan

1996-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Early Detection of Changes in the North Atlantic Meridional Overturning Circulation: Implications for the Design of Ocean Observation Systems  

Science Conference Proceedings (OSTI)

Many climate models predict that anthropogenic greenhouse gas emissions may cause a threshold response of the North Atlantic meridional overturning circulation (MOC). These model predictions are, however, uncertain. Reducing this uncertainty can ...

Klaus Keller; Curtis Deutsch; Matthew G. Hall; David F. Bradford

2007-01-01T23:59:59.000Z

42

Explosive Cyclogenesis in the West-Central North Atlantic Ocean, 1981–84. Part I: Composite Structure and Mean Behavior  

Science Conference Proceedings (OSTI)

Tracks and central values of surface low-pressure centre and 500-mb absolute vorticity maxima were gathered from operational analysis for 48 casts of expressive cyclogenesis in the west-central North Atlantic. The cases were stratified into ...

Frederick Sanders

1986-10-01T23:59:59.000Z

43

Geosat Data Assimilation with Application to the Eastern North Atlantic  

Science Conference Proceedings (OSTI)

An attempt is made to determine the three-dimensional ocean circulation from satellite altimeter measurements by assimilating Geosat sea surface height data into an eddy-resolving quasigeostrophic (QG) model of the eastern North Atlantic Ocean. ...

Detlef Stammer

1997-01-01T23:59:59.000Z

44

Evolution of Anthropogenic Pb and Pb isotopes in the deep North Atlantic Ocean and the Indian Ocean  

E-Print Network (OSTI)

Pb and Pb isotopes in the ocean have varied on decadal to centennial time scales due to anthropogenic Pb inputs. Thus, tracing the temporal variation of Pb and Pb isotopes in the ocean provides information on the major ...

Lee, Jong-Mi, Ph. D. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

45

The Annual March of the Heat Budget of the North and Tropical Atlantic Oceans  

Science Conference Proceedings (OSTI)

This paper documents the annual march of the following processes for the 70°N–20°S region of the Atlantic, including the Gulf of Mexico and Caribbean Sea: net surface heat gains (monthly mean time-scale), subsurface heat storage change (bimonthly)...

Peter J. Lamb; Andrew F. Bunker

1982-12-01T23:59:59.000Z

46

Observations of Mesoscale Circulations within Extratropical Cyclones over the North Atlantic Ocean during ERICA  

Science Conference Proceedings (OSTI)

Pseudo-dual-Doppler analyses of two mesoscale circulations (20–40 km in horizontal dimensions) that formed along a warm front within a rapidly deepening extratropical cyclone over the ocean are presented. The circulations were analyzed using ...

Ching-Hwang Liu; Roger M. Wakimoto; Frank Roux

1997-03-01T23:59:59.000Z

47

Constraining a North Atlantic Ocean General Circulation Model with Chlorofluorocarbon Observations  

Science Conference Proceedings (OSTI)

Measurements of anthropogenic tracers such as chlorofluorocarbons and tritium must be quantitatively combined with ocean general circulation models as a component of systematic model development. The authors have developed and tested an inverse ...

S. L. Gray; T. W. N. Haine

2001-05-01T23:59:59.000Z

48

The Relationship between the North Atlantic Jet and Tropical Convection over the Indian and Western Pacific Oceans  

Science Conference Proceedings (OSTI)

Boreal winter jet variability over the North Atlantic is investigated using 40-yr European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-40) data, where the variability is defined by the first EOF of the zonal wind on seven vertical ...

Jiacan Yuan; Steven B. Feldstein; Sukyoung Lee; Benkui Tan

2011-12-01T23:59:59.000Z

49

Upper-Ocean Eddy Transports of Heat, Potential Vorticity, and Volume in the Northeastern North Atlantic—“Vivaldi 1991”  

Science Conference Proceedings (OSTI)

Mesoscale eddies in the northeast North Atlantic were investigated using the SeaSoar towed CTD and ADCP data from the 1991 Vivaldi cruise. These data cover an area of 1700 km × 1500 km between 39° and 54°N and between 35° and 10°W. To maximize ...

H. Leach; S. J. Bowerman; M. E. McCulloch

2002-10-01T23:59:59.000Z

50

The Effect of a Large Freshwater Perturbation on the Glacial North Atlantic Ocean Using a Coupled General Circulation Model  

Science Conference Proceedings (OSTI)

The commonly held view of the conditions in the North Atlantic at the last glacial maximum, based on the interpretation of proxy records, is of large-scale cooling compared to today, limited deep convection, and extensive sea ice, all associated ...

C. D. Hewitt; A. J. Broccoli; M. Crucifix; J. M. Gregory; J. F. B. Mitchell; R. J. Stouffer

2006-09-01T23:59:59.000Z

51

Development and Analysis of the Systematically Merged Atlantic Regional Temperature and Salinity Climatology For Oceanic Heat Content Estimates  

Science Conference Proceedings (OSTI)

An oceanic climatology to calculate upper ocean thermal structure was developed for application year-round in the North Atlantic Ocean basin. The Systematically Merged Atlantic Regional Temperature and Salinity (SMARTS) Climatology is used in a ...

P. C. Meyers; L. K. Shay; J. K. Brewster

52

A Simulation of Bomb Tritium Entry into the Atlantic Ocean  

Science Conference Proceedings (OSTI)

Tritium is used in a model calibration study that is aimed at developing three-dimensional ocean circulation and mixing models for climate and geochemical simulations. The North Atlantic tritium distribution is modeled using a three-dimensional ...

J. L. Sarmiento

1983-10-01T23:59:59.000Z

53

Absolute Transports of Mass and Temperature for the North Atlantic Current– Subpolar Front System  

Science Conference Proceedings (OSTI)

The flow of subtropical waters carried into the northern North Atlantic Ocean by the North Atlantic Current– subpolar front system (NAC–SPF) is an important component of the meridional overturning circulation. These waters become colder and ...

Paula Pérez-Brunius; Tom Rossby; D. Randolph Watts

2004-08-01T23:59:59.000Z

54

NORTH ATLANTIC TUNA EXPLORATIONS  

E-Print Network (OSTI)

Schuck applied the first stamped and numbered hooks to giant bluefin tuna (Thunnus thynnus) slamming past the island of Bimini, they had no way of knowing the impact their modest experiment would have on fisheries science. In the fall of that year, Schuck took a phone call from a Nova Scotia tuna trap owner, learning that the first of the Biminitagged giants with a numbered hook in its jaw had been landed. In his own words, he and Mather went “through the roof ” with astonishment (Shuck, 2000). For nearly 50 years, their simple identification tag was the principal tool of bluefin research, but the migration paths of giant bluefin on the high seas remained shrouded in mystery. The last exploratory U.S. research longline expeditions targeting tunas in the Central North Atlantic were the U.S. Bureau of Commercial Fisheries MV Delaware and

North Atlantic; Molly Lutcavage

1952-01-01T23:59:59.000Z

55

The Western North Atlantic Shelfbreak Current System in Summer  

Science Conference Proceedings (OSTI)

Twelve years of historical hydrographic data, spanning the period 1990–2001, are analyzed to examine the along-stream evolution of the western North Atlantic Ocean shelfbreak front and current, following its path between the west coast of ...

Paula S. Fratantoni; Robert S. Pickart

2007-10-01T23:59:59.000Z

56

Constraining North Atlantic circulation with transient tracer observations  

E-Print Network (OSTI)

The capability of transient tracers to constrain the ocean circulation in the North Atlantic is explored. Study of an idealized tracer shows that inferences of circulation properties from transient state distributions are ...

Li, Xingwen, 1968-

2003-01-01T23:59:59.000Z

57

Eulerian and Lagrangian Velocity Distributions in the North Atlantic  

Science Conference Proceedings (OSTI)

Velocity probability density functions (PDFs) are calculated using data from subsurface current meters in the western North Atlantic Ocean. The PDFs are weakly, but significantly, non-Gaussian. They deviate from normality because of an excess of ...

J. H. LaCasce

2005-12-01T23:59:59.000Z

58

Transport across 48°N in the Atlantic Ocean  

Science Conference Proceedings (OSTI)

Transports across 48°N in the Atlantic Ocean are estimated from five repeat World Ocean Circulation Experiment (WOCE) hydrographic lines collected in this region in 1993–2000, from time-varying air–sea heat and freshwater fluxes north of 48°N, ...

Rick Lumpkin; Kevin G. Speer; K. Peter Koltermann

2008-04-01T23:59:59.000Z

59

Improved Representation of Upper-Ocean Dynamics and Mixed Layer Depths in a Model of the North Atlantic on Switching from Eddy-Permitting to Eddy-Resolving Grid Resolution  

Science Conference Proceedings (OSTI)

Two configurations of a primitive-equation model of the North Atlantic are analyzed with respect to the simulated cycling of energy, mass, and heat in the upper ocean. One model is eddy-permitting (1/3° horizontal resolution), the other one is ...

Andreas Oschlies

2002-08-01T23:59:59.000Z

60

Climate Modulation of North Atlantic Hurricane Tracks  

Science Conference Proceedings (OSTI)

The variability of North Atlantic tropical storm and hurricane tracks, and its relationship to climate variability, is explored. Tracks from the North Atlantic hurricane database for the period 1950–2007 are objectively separated into four groups ...

James P. Kossin; Suzana J. Camargo; Matthew Sitkowski

2010-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

The North Atlantic Subpolar Gyre in Four High-Resolution Models  

Science Conference Proceedings (OSTI)

The authors present the first quantitative comparison between new velocity datasets and high-resolution models in the North Atlantic subpolar gyre [1/10° Parallel Ocean Program model (POPNA10), Miami Isopycnic Coordinate Ocean Model (MICOM), ° ...

A. M. Treguier; S. Theetten; E. P. Chassignet; T. Penduff; R. Smith; L. Talley; J. O. Beismann; C. Böning

2005-05-01T23:59:59.000Z

62

An Isopycnic Model Study of the North Atlantic. Part I: Model Experiment  

Science Conference Proceedings (OSTI)

This paper describes a 30-yr spinup experiment of the North Atlantic Ocean with the Miami isopycnic-coordinate ocean model, which, when compared with previous experiments, possesses improved horizontal resolution, surface forcing functions, and ...

A. L. New; R. Bleck; Y. Jia; R. Marsh; M. Huddleston; S. Barnard

1995-11-01T23:59:59.000Z

63

A Model Analysis of the Behavior of the Mediterranean Water in the North Atlantic  

Science Conference Proceedings (OSTI)

The behavior of the Mediterranean Water in the North Atlantic Ocean sector of a global ocean general circulation model is explored, starting from its entry point at the Strait of Gibraltar. The analysis focuses primarily on one experiment in ...

Yanli Jia; Andrew C. Coward; Beverly A. de Cuevas; David J. Webb; Sybren S. Drijfhout

2007-03-01T23:59:59.000Z

64

North Atlantic Simulations with the Hybrid Coordinate Ocean Model (HYCOM): Impact of the Vertical Coordinate Choice, Reference Pressure, and Thermobaricity  

Science Conference Proceedings (OSTI)

The viability of a generalized (Hybrid) Coordinate Ocean Model (HYCOM), together with the importance of thermobaricity and the choice of reference pressure, is demonstrated by analyzing simulations carried out using the World Ocean Circulation ...

Eric P. Chassignet; Linda T. Smith; George R. Halliwell; Rainer Bleck

2003-12-01T23:59:59.000Z

65

On the Variability of Wind Power Input to the Oceans with a Focus on the Subpolar North Atlantic  

Science Conference Proceedings (OSTI)

Variations in power input to the ocean using a recent global “reanalysis” extending back to 1871 show a strong trend in the net power input since then, a trend dominated by the Southern Ocean region. This trend is interpreted as a spurious result ...

Xiaoming Zhai; Carl Wunsch

2013-06-01T23:59:59.000Z

66

Instability Waves in the Equatorial Atlantic Ocean  

Science Conference Proceedings (OSTI)

Evidence is presented for the generation of planetary waves by barotropic instability within the cyclonic shear region of the Atlantic Ocean's South Equatorial Current (SEC). Immediately following the springtime intensification of the southeast ...

Robert H. Weisberg; Thomas J. Weingartner

1988-11-01T23:59:59.000Z

67

Environmental Radioactivity in the North Atlantic Region.  

E-Print Network (OSTI)

Radioactivity, Monaco Abstract. Measurements of fallout radioactivity in the North Atlantic region including ISLANDS; FOOD CHAINS; GLOBAL FALLOUT GREENLAND; LEAD 210; MAN; MILK; MOLLUSCS; POLONIUM 210; PLANTS

68

On the Sources of North Atlantic Deep Water  

Science Conference Proceedings (OSTI)

Because the volumetric census of deep and bottom water in the North Atlantic Ocean consists of three isolated linear ridges along which heat and salt flow through the main volumetric mode (and point of intersection), it is possible to deduce the ...

James Luyten; Michael McCartney; Henry Stommel; Robert Dickson; Ed Gmitrowicz

1993-08-01T23:59:59.000Z

69

Meso- to Large-Scale Structure of Subducting Water in the Subtropical Gyre of the Eastern North Atlantic Ocean  

Science Conference Proceedings (OSTI)

As part of an observational study of ocean subduction, SeaSoar surveys were carried out following subducting water tagged by bobber floats during their deployment in the spring of 1991 and again in the fall of 1992 and spring of 1993. In the ...

Terrence M. Joyce; James R. Luyten; Alexander Kubryakov; Frank B. Bahr; Julie S. Pallant

1998-01-01T23:59:59.000Z

70

Trends of Variables and Energy Fluxes over the Atlantic Ocean from 1948 to 19721  

Science Conference Proceedings (OSTI)

Regression coefficients have been computed from monthly. seasonal and annual means of eleven meteorological variables and eight energy fluxes by 10° areas over the North and South Atlantic Oceans from January IMS through December 1972. Many ...

Andrew F. Bunker

1980-06-01T23:59:59.000Z

71

Annual Heat Gain of the Tropical Atlantic Computed from Subsurface Ocean Data  

Science Conference Proceedings (OSTI)

Charts are presented which show the seasonal and annual rates of heat gain of the tropical North Atlantic Ocean. These rates have been computed using subsurface oceanographic data and wind-stress data. In these computations the interseasonal ...

David W. Behringer; Henry Stommel

1981-10-01T23:59:59.000Z

72

Book review The balance and conservation of the North Atlantic ecosystems?  

E-Print Network (OSTI)

Book review The balance and conservation of the North Atlantic ecosystems? Daniel Pauly and Jay Ma in the press and the number of recent, thorough, scientific books reviewing the available literature on this topic. The authors of the book In a Perfect Ocean also tackle this hot issue for the North Atlantic

Beaumont, Christopher

73

CARINA (Carbon dioxide in the Atlantic Ocean) Data from CDIAC  

DOE Data Explorer (OSTI)

The idea for CARINA developed at a workshop (CO2 in the northern North Atlantic) that was held at the HANSE-Wissenschaftskolleg (HANSE Institute for Advanced Study) in Delmenhorst, Germany from June 9 to 11, 1999. While the main scientific focus is the North Atlantic, some data from the South Atlantic have been included in the project, along with data from the Arctic Ocean. Data sets go back to 1972, and more than 100 are currently available. The data are also being used in conjunction with other projects and research groups, such as the Atlantic Ocean Carbon Synthesis Group. See the inventory of data at http://store.pangaea.de/Projects/CARBOOCEAN/carina/data_inventory.htm See a detailed table of information on the cruises at http://cdiac.ornl.gov/oceans/CARINA/Carina_table.html and also provides access to data files. The CARBOOCEAN data portal provides a specialized interface for CARINA data, a reference list for historic carbon data, and password protected access to the "Data Underway Warehouse.".

74

Stochastic Forcing of the North Atlantic Wind-Driven Ocean Circulation. Part I: A Diagnostic Analysis of the Ocean Response to Stochastic Forcing  

Science Conference Proceedings (OSTI)

At midlatitudes, the magnitude of stochastic wind stress forcing due to atmospheric weather is comparable to that associated with the seasonal cycle. Stochastic forcing is therefore likely to have a significant influence on the ocean circulation. ...

Kettyah C. Chhak; Andrew M. Moore; Ralph F. Milliff; Grant Branstator; William R. Holland; Michael Fisher

2006-03-01T23:59:59.000Z

75

Climatology of Tropical Cyclogenesis in the North Atlantic (1948–2004)  

Science Conference Proceedings (OSTI)

The threat posed to North America by Atlantic Ocean tropical cyclones (TCs) was highlighted by a series of intense landfalling storms that occurred during the record-setting 2005 hurricane season. However, the ability to understand—and therefore ...

Ron McTaggart-Cowan; Glenn D. Deane; Lance F. Bosart; Christopher A. Davis; Thomas J. Galarneau Jr.

2008-04-01T23:59:59.000Z

76

Seasonal Variability in the Intermediate Waters of the Eastern North Atlantic1  

Science Conference Proceedings (OSTI)

Observational evidence of seasonal variability below the main thermocline in the eastern North Atlantic is described, and a theoretical model of oceanic response to seasonally varying wind stress forcing is constructed to assist in the ...

N. A. Bray

1982-09-01T23:59:59.000Z

77

Eddy-Induced Particle Dispersion in the Near-Surface North Atlantic  

Science Conference Proceedings (OSTI)

This study investigates the anisotropic properties of the eddy-induced material transport in the near-surface North Atlantic from two independent datasets, one simulated from the sea surface height altimetry and one derived from real-ocean surface ...

Irina I. Rypina; Igor Kamenkovich; Pavel Berloff; Lawrence J. Pratt

2012-12-01T23:59:59.000Z

78

Interactions between North Atlantic Clouds and the Large-Scale Environment  

Science Conference Proceedings (OSTI)

This paper addresses the problem of understanding and predicting the presence of clouds and their effects on the atmosphere in the midlatitudes of the North Atlantic Ocean. The European Centre for Medium Range Weather Forecasting initialized ...

Rong-Shyang Sheu; Judith A. Curry

1992-02-01T23:59:59.000Z

79

Observed Decadal North Atlantic Tripole SST Variability. Part I: Weather Noise Forcing and Coupled Response  

Science Conference Proceedings (OSTI)

The mechanisms responsible for the decadal variability of the tripole mode of North Atlantic SST during the latter half of the twentieth century are diagnosed using a new technique. The SST and associated ocean variability are reconstructed by ...

Meizhu Fan; Edwin K. Schneider

2012-01-01T23:59:59.000Z

80

Estimated Decadal Changes in the North Atlantic Meridional Overturning Circulation and Heat Flux 1993–2004  

Science Conference Proceedings (OSTI)

Results from a global 1° model constrained by least squares to a multiplicity of datasets over the interval 1992–2004 are used to describe apparent changes in the North Atlantic Ocean meridional overturning circulation and associated heat fluxes ...

Carl Wunsch; Patrick Heimbach

2006-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Climate Variability of the Intensity of Synoptic Processes in the North Atlantic Midlatitudes  

Science Conference Proceedings (OSTI)

Long-term interannual variations of the intramonthly standard deviations of surface meteorological parameters are studied on the basis of the North Atlantic Ocean Weather Stations (OWSs) dataset. To consider the different scales of short-term ...

Sergey K. Gulev

1997-04-01T23:59:59.000Z

82

Is the North Atlantic in Sverdrup Balance?  

Science Conference Proceedings (OSTI)

Evidence for the widespread assumption that Sverdrup balance describes the dynamics of the North Atlantic subtropical gyre is reviewed critically. If the balance were to hold up to the edge of the Gulf Stream system, then there is a serious ...

Carl Wunsch; Dean Roemmich

1985-12-01T23:59:59.000Z

83

Oceanic Origins of Southwest Tropical Atlantic Biases  

E-Print Network (OSTI)

The SST bias in the tropical Atlantic exists in the early to latest generation of coupled general circulation models. The maximum bias is not on the equator but at 16°S, the cause of which has not been thoroughly studied. Newly released CMIP5 models provide a useful tool to investigate the contributions of different physical processes to the SST bias in this area in the coupled system. We tested three existing mechanisms and found that: 1) there is no significant relationship between the SST bias and surface heat flux bias; 2) deficient coastal upwelling is a contributing but not the sole source of the bias; and 3) the SST bias is correlated with temperature biases in the upstream equatorial region. The Angola-Benguela front is displaced southward by more than 10° in latitude in many CIMP5 models. Due to the huge temperature contrasts on two sides of the front, such a frontal displacement generates a very strong SST bias. The correlation between the SST bias and frontal location error in this region is significant at the 99% level, demonstrating that the SST bias in coupled GCMs is attributable to the models’ inability to reproduce a realistic position of the front and the consequent erroneous advection by the southward Angola current. This is due to both errors in the simulated surface wind field and systematic errors in ocean models. Ocean reanalysis datasets and a high-resolution regional model simulation suffer a similar pattern of SST biases. Although they produce a more realistic ocean circulation than coarser resolution simulations and alleviate some of the severe SST bias near the front, a warm bias overlies on a northward current to the south of the front, which actually comes from the north of the front through a subsurface passage. We identify a strong subsurface temperature bias caused by a too-deep and diffused simulated thermocline along the coast of Angola, originating from the equatorial thermocline, advected by the Angola Current and an undercurrent beneath the Benguela current, and then brought to the surface by the coastal upwelling along the Benguela coast, contributing to the warm SST bias south of the front.

Xu, Zhao

2013-05-01T23:59:59.000Z

84

Are Tropical Cyclones Less Effectively Formed by Easterly Waves in the Western North Pacific than in the North Atlantic?  

Science Conference Proceedings (OSTI)

It has been observed that the percentage of tropical cyclones originating from easterly waves is much higher in the North Atlantic (60%) than in the western North Pacific (10%–20%). This disparity between the two ocean basins exists because the ...

Tsing-Chang Chen; Shih-Yu Wang; Ming-Cheng Yen; Adam J. Clark

2008-11-01T23:59:59.000Z

85

Thermohaline Structure of an Eddy-Resolving North Atlantic Model: The Influence of Boundary Conditions  

Science Conference Proceedings (OSTI)

A T–S volumetric census, with a resolution of 0.2°C and 0.1 psu, for years 20-25 of the World Ocean Circulation Experiment Community Modeling Effort eddy-resolving simulation of the equatorial and North Atlantic Ocean, reveals how the ...

John M. Klinck

1995-06-01T23:59:59.000Z

86

The Recent Increase in North Atlantic Wave Heights  

Science Conference Proceedings (OSTI)

The nature and causes of the recent increase in North Atlantic wave heights are explored by combining a numerical hindcast with a statistical analysis. The numerical hindcast incorporates a 10-yr history (1980–89) of North Atlantic, twice daily ...

Y. Kushnir; V. J. Cardone; J. G. Greenwood; M. A. Cane

1997-08-01T23:59:59.000Z

87

Lagrangian Drifter Dispersion in the Southwestern Atlantic Ocean  

Science Conference Proceedings (OSTI)

In the framework of Monitoring by Ocean Drifters (MONDO) project, a set of Lagrangian drifters were released in proximity of the Brazil Current, the western branch of the subtropical gyre in the South Atlantic Ocean. The experimental strategy of ...

Stefano Berti; Francisco Alves Dos Santos; Guglielmo Lacorata; Angelo Vulpiani

2011-09-01T23:59:59.000Z

88

The Role of North Atlantic Deep Water Formation in an OGCM’s Ventilation and Thermohaline Circulation  

Science Conference Proceedings (OSTI)

Two coarse-resolution model experiments are carried out on an OGCM to examine the effects of North Atlantic Deep Water (NADW) formation on the thermohaline circulation (THC) and ventilation timescales of the abyssal ocean. An idealized age tracer ...

Paul J. Goodman

1998-09-01T23:59:59.000Z

89

Performance of NCEP Regional Wave Models in Predicting Peak Sea States during the 2005 North Atlantic Hurricane Season  

Science Conference Proceedings (OSTI)

Unprecedented numbers of tropical cyclones occurred in the North Atlantic Ocean and the Gulf of Mexico in 2005. This provides a unique opportunity to evaluate the performance of two operational regional wave forecasting models at the National ...

Yung Y. Chao; Hendrik L. Tolman

2010-10-01T23:59:59.000Z

90

Eulerian and Lagrangian Statistics from Surface Drifters and a High-Resolution POP Simulation in the North Atlantic  

Science Conference Proceedings (OSTI)

Eulerian and Lagrangian statistics were calculated from the North Atlantic surface drifter dataset for the years 1993–97 and a high-resolution eddy-resolving configuration of the Los Alamos National Laboratory (LANL) Parallel Ocean Program (POP) ...

Julie L. McClean; Pierre-Marie Poulain; Jimmy W. Pelton; Mathew E. Maltrud

2002-09-01T23:59:59.000Z

91

Effect of Atlantic Meridional Overturning Circulation Changes on Tropical Coupled Ocean-Atmosphere System  

E-Print Network (OSTI)

The objective of this study is to investigate the effect of Atlantic meridional overturning circulation (AMOC) changes on tropical coupled ocean-atmosphere system via oceanic and atmospheric processes. A suite of numerical simulations have been conducted and the results show that both oceanic and atmospheric circulation changes induced by AMOC changes can have a profound impact on tropical sea surface temperature (SST) and sea surface salinity (SSS) conditions, but their dominance varies in different parts of the tropical oceans. The oceanic process has a dominant control on SST and SSS response to AMOC changes in the South Tropical Atlantic, while the atmospheric teleconnection is mainly responsible for SST and SSS changes over the North Tropical Atlantic and Pacific Oceans during the period of reduced AMOC. The finding has significant implication for the interpretation of the paleotemperature reconstructions over the southern Caribbean and the western Tropical Atlantic regions during the Younger Dryas. It suggests that the strong spatial inhomogeneity of the SST change revealed by the proxy records in these regions may be attributed to the competing oceanic and atmospheric processes that dominate the SST response. Similar mechanisms may also explain the reconstructed paleo-salinity change in the tropical Atlantic, which shows a basin-wide increase in SSS during the Younger Dryas, according to recent paleo climate studies. Finally, we show that atmospheric teleconnection induced by the surface cooling of the North Atlantic and the North Pacific in response to a weakened AMOC, is a leading physical mechanism that dictates the behavior of El Nino/Southern Oscillation (ENSO) response to AMOC changes. However, depending on its origin, the atmospheric teleconnection can affect ENSO variability in different ways. The atmospheric process associated with the North Atlantic cooling tends to enhance El Nino occurrence with a deepened mean thermocline depth in the eastern Pacific, whereas the atmospheric process associated with the North Pacific cooling tends to produce more La Nina events with a reduced mean thermocline depth in the eastern Pacific. Preliminary analysis suggests that the change in ENSO characteristics is associated with the change in internal atmospheric variability caused by the surface cooling in the North Atlantic and North Pacific. Complex nature of the underlying dynamics concerning the effect of the AMOC on ENSO calls for further investigation into this problem.

Wan, Xiuquan

2009-08-01T23:59:59.000Z

92

Evaluation of North Atlantic Property Field Simulations at °  

Science Conference Proceedings (OSTI)

One way to measure the skill of an ocean general circulation model is to evaluate its ability to simulate observed property distributions. Pressure, temperature, and salinity distributions generated by a ° Atlantic Ocean general circulation ...

Yi Chao; M. Susan Lozier

2001-11-01T23:59:59.000Z

93

Cosmic-ray latitude surveys in the Atlantic Ocean area  

Science Conference Proceedings (OSTI)

Vertical cutoff rigidities were re-determined for the locations of the stratospheric balloon measurements made during the 22nd Soviet Antarctic Expedition (1975-1976). These cutoff rigidities were determined for the month of each measurement using a method that interpolates between the world grids of trajectory-derived vertical cutoff rigidities calculated for Epoch 1965.0 and Epoch 1980.0. In comparing these values with other calculated using the 1975.0 field models which under-estimated the secular variations, small increases in the vertical cutoff rigidities were noted in the North Atlantic area and small decreases were noted in the South Atlantic, consistent with the secular changes in the world grid of vertical cutoff rigidities. These results emphasize the necessity of determining cutoff rigidity values of the year in which latitude measurements are made if these measurements are in the region of the world (particularly the Atlantic Ocean area) where the cutoff-rigidity values are rapidly changing.

Shea, M.A.; Smart, D.F.; Stozhkov, Y.I.; Svirzhevsky, N.S.; Svirzhevskaya, A.K.

1987-01-01T23:59:59.000Z

94

Advective Time Scales of Agulhas Leakage to the North Atlantic in Surface Drifter Observations and the 3D OFES Model  

Science Conference Proceedings (OSTI)

The advective transit time of temperature–salinity anomalies from the Agulhas region to the regions of deep convection in the North Atlantic Ocean is an important time scale in climate, because it has been linked to variability in the Atlantic ...

Erik van Sebille; Lisa M. Beal; William E. Johns

2011-05-01T23:59:59.000Z

95

RSS Feeds for Specific Tropical Cyclones of the North Atlantic...  

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

RSS Feeds for Specific Tropical Cyclones of the North Atlantic, Caribbean Sea, and Gulf of Mexico (English) Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS...

96

Seasonal Transport Variation in the Western Subtropical North Atlantic: Experiments with an Eddy-resolving Model  

Science Conference Proceedings (OSTI)

A high-resolution model of the wind-driven and thermohaline circulation in the North and equatorial Atlantic Ocean is used to study the structure and variability of the boundary current system at 26°N, including the Florida Current, the Antilles ...

Claus W. Böning; Ralf Döscher; Reinhard G. Budich

1991-09-01T23:59:59.000Z

97

Vertical and Lateral Mixing Processes Deduced from the Mediterranean Water Signature in the North Atlantic  

Science Conference Proceedings (OSTI)

The conservation equations of heat, salt, and mass are combined in such a way that a simple relation is found between the known volume flux of Mediterranean Water entering the North Atlantic Ocean and the effects of lateral and vertical mixing ...

Jan D. Zika; Trevor J. McDougall

2008-01-01T23:59:59.000Z

98

Surface Energy Fluxes of the South Atlantic Ocean  

Science Conference Proceedings (OSTI)

Fluxes of sensible, latent and radiational energy and momentum across the surface of the South Atlantic Ocean have been calculated by substituting ship meteorological observations into bulk aerodynamic and empirical radiation equations. Upper-air ...

Andrew F. Bunker

1988-04-01T23:59:59.000Z

99

The Scientific Beaufort Equivalent Scale: Effects on Wind Statistics and Climatological Air-Sea Flux Estimates in the North Atlantic Ocean  

Science Conference Proceedings (OSTI)

The Beaufort equivalent scale of the World Meteorological Organization (WMO), used for decades to transform marine Beaufort estimates to surface wind speeds over the oceans, contains systematic errors that depend nonlinearly on the wind speed. ...

Hans-Jörg Isemer; Lutz Hasse

1991-08-01T23:59:59.000Z

100

The Relation of Seafloor Voltages to Ocean Transports in North Atlantic Circulation Models: Model Results and Practical Considerations for Transport Monitoring  

Science Conference Proceedings (OSTI)

Motionally induced voltage differences offer one of the few observational methods sensitive to changes in large-scale ocean transports. They present a useful contrast to most oceanographic data by virtue of their natural spatial integration, ...

ÁH. Flosadóttir; J. C. Larsen; J. T. Smith

1997-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Large-Scale SST Variability in the Western North Atlantic Subtropical Convergence Zone during FASINEX. Part II: Upper Ocean Heat Balance and Frontogenesis  

Science Conference Proceedings (OSTI)

We analyzed the influence of wind-deriven horizontal heat advection on the large-scale [O(1000) km wavelength] variability of both the upper-ocean mixed-layer heat content and the subtropical frontal zone (SFZ) within an 11° by 10° domain in the ...

George R. Halliwell Jr.; Peter Cornillon

1990-02-01T23:59:59.000Z

102

Tropical Atlantic Decadal Oscillation and Its Potential Impact on the Equatorial Atmosphere–Ocean Dynamics: A Simple Model Study  

Science Conference Proceedings (OSTI)

Simple coupled atmosphere–ocean models are used to study the potential influence of the tropical Atlantic Ocean decadal oscillation on the equatorial Atlantic atmosphere–ocean dynamics. Perturbing the model tropical Atlantic at the extratropics (...

Sang-Ki Lee; Chunzai Wang

2008-01-01T23:59:59.000Z

103

Climatological Variations in North Atlantic Tropical Cyclone Tracks  

Science Conference Proceedings (OSTI)

This study investigates the relationship between tropical cyclone (TC) tracks and climatological variations in large-scale environmental parameters associated with the TC steering flow. By using the Atlantic Ocean hurricane database for 1950–2010, ...

Angela J. Colbert; Brian J. Soden

2012-01-01T23:59:59.000Z

104

The International Intercomparison Exercise of Underway fCo2 Systems During the R/V Meteor Cruise 36/1 in the North Atlantic Ocean  

SciTech Connect

Measurements of the fugacity of carbon dioxide (fCO2) in surface seawater are an important part of studies of the global carbon cycle and its anthropogenic perturbation. An important step toward the thorough interpretation of the vast amount of available fCO2 data is the establishment of a database system that would make sure measurements more widely available for use in understanding the basin- and global-scale distribution of fCO2 and its influence on the oceanic uptake of anthropogenic CO2. Such an effort, however, is based on knowledge of data sets from different laboratories. Currently, however, there is not much known about this subject.

Koertzinger, Arne; Mintrop, Ludger; Duinker, Jan

1999-03-01T23:59:59.000Z

105

The 1981 ocean tomography experiment: Preliminary results  

Science Conference Proceedings (OSTI)

Preliminary results from a 1981 test ocean acoustic tomography experiment are presented. The system deployed in the southern North Atlantic

The Ocean Tomography Group; R. C. Spindel

1982-01-01T23:59:59.000Z

106

Oceanic Turbulence and Stochastic Models from Subsurface Lagrangian Data for the Northwest Atlantic Ocean  

Science Conference Proceedings (OSTI)

The historical dataset provided by 700-m acoustically tracked floats is analyzed in different regions of the northwestern Atlantic Ocean. The goal is to characterize the main properties of the mesoscale turbulence and to explore Lagrangian ...

Milena Veneziani; Annalisa Griffa; Andy M. Reynolds; Arthur J. Mariano

2004-08-01T23:59:59.000Z

107

Leading Modes of the Upper-Ocean Temperature Interannual Variability along the Equatorial Atlantic Ocean in NCEP GODAS  

Science Conference Proceedings (OSTI)

In this work, the authors analyze the physical mechanisms of interannual variability of the upper-ocean temperature anomaly (OTA) in the equatorial Atlantic Ocean, using ocean reanalysis from the National Centers for Environmental Prediction (NCEP)...

Zeng-Zhen Hu; Arun Kumar; Bohua Huang; Jieshun Zhu

2013-07-01T23:59:59.000Z

108

Climatic Warming of Atlantic Intermediate Waters  

Science Conference Proceedings (OSTI)

Interdecadal temperature variability of the Atlantic Ocean is investigated by differencing hydrographic sections taken from the 1920s through the 1990s. A comprehensive reanalysis of North Atlantic sections and the inclusion of South Atlantic ...

Brian K. Arbic; W. Brechner Owens

2001-10-01T23:59:59.000Z

109

Winter North Atlantic Oscillation Hindcast Skill: 1900–2001  

Science Conference Proceedings (OSTI)

Recent proposed seasonal hindcast skill estimates for the winter North Atlantic Oscillation (NAO) are derived from different lagged predictors, NAO indices, skill assessment periods, and skill validation methodologies. This creates confusion ...

Christopher G. Fletcher; Mark A. Saunders

2006-11-01T23:59:59.000Z

110

The Baroclinic Stability of the Atlantic North Equatorial Current  

Science Conference Proceedings (OSTI)

POLYMODE Array III, Cluster C, was a collection of four current meter moorings that were placed in the Atlantic North Equatorial Current for one year in May 1978. They were designed to look for indications of baroclinic instability such as ...

Thomas Keffer

1983-04-01T23:59:59.000Z

111

North Atlantic Subpolar Gyre Surface Variability (1895–2009)  

Science Conference Proceedings (OSTI)

Surface temperature, salinity, and density are examined in the northeastern part of the North Atlantic subpolar gyre over the last 115 years of measurements. This region presents coherent variability in space but also between different seasons, ...

G. Reverdin

2010-09-01T23:59:59.000Z

112

Surges of Antarctic Bottom Water into the North Atlantic  

Science Conference Proceedings (OSTI)

Current meter records show that Antarctic Bottom Water surges into the western North Atlantic with roughly a sixty-day period. A time-dependent mass budget which incorporates estimated volume fluxes from geostrophic calculations, surges with a ...

John A. Whitehead

1989-06-01T23:59:59.000Z

113

Climatology and Interannual Variability of North Atlantic Hurricane Tracks  

Science Conference Proceedings (OSTI)

The spatial and temporal variability of North Atlantic hurricane tracks and its possible association with the annual hurricane landfall frequency along the U.S. East Coast are studied using principal component analysis (PCA) of hurricane track ...

Lian Xie; Tingzhuang Yan; Leonard J. Pietrafesa; John M. Morrison; Thomas Karl

2005-12-01T23:59:59.000Z

114

The Summer North Atlantic Oscillation Influence on the Eastern Mediterranean  

Science Conference Proceedings (OSTI)

This study highlights an important and previously overlooked summer North Atlantic Oscillation (NAO) influence over the eastern Mediterranean. The featured analysis is based on a synergistic use of reanalysis data, satellite retrievals, and ...

Themis Chronis; Dionysios E. Raitsos; Dimitris Kassis; Athanassios Sarantopoulos

2011-11-01T23:59:59.000Z

115

The North Atlantic Oscillation response to large-scale atmospheric anomalies in the Northeast Pacific  

Science Conference Proceedings (OSTI)

Ingredients in the North Pacific flow influencing Rossby wave breakings in the North Atlantic and the intra-seasonal variations of the North Atlantic Oscillation (NAO) are investigated using both reanalyses data and a three-level quasigeostrophic ...

Marie Drouard; Gwendal Rivière; Philippe Arbogast

116

Ocean–Atmosphere Interactions in the Tropical and Subtropical Atlantic Ocean  

Science Conference Proceedings (OSTI)

A 110-yr simulation is conducted using a specially designed coupled ocean–atmosphere general circulation model that only allows air–sea interaction over the Atlantic Ocean within 30°S–60°N. Since the influence from the Pacific El Niño–Southern ...

Bohua Huang; J. Shukla

2005-06-01T23:59:59.000Z

117

On the circulation of Atlantic Water in the Arctic Ocean  

Science Conference Proceedings (OSTI)

An idealized eddy-resolving numerical model and an analytic three-layer model are used to develop ideas about what controls the circulation of Atlantic Water in the Arctic Ocean. The numerical model is forced with a surface heat flux, uniform ...

Michael A. Spall

118

Precipitation over the Atlantic Ocean, 30°S to 70°N  

Science Conference Proceedings (OSTI)

New estimates of rainfall over the Atlantic Ocean between 30°S to 70°N have been constructed based an a technique that uses the present weather observations taken by ships. Annual and quarterly rainfall maps are presented. Between the equator and ...

Clive E. Dorman; Robert H. Bourke

1981-03-01T23:59:59.000Z

119

Multidecadal Covariability of North Atlantic Sea Surface Temperature, African Dust, Sahel Rainfall, and Atlantic Hurricanes  

Science Conference Proceedings (OSTI)

Most studies of African dust and North Atlantic climate have been limited to the short time period since the satellite era (1980 onward), precluding the examination of their relationship on longer time scales. Here a new dust dataset with the ...

Chunzai Wang; Shenfu Dong; Amato T. Evan; Gregory R. Foltz; Sang-Ki Lee

2012-08-01T23:59:59.000Z

120

Impacts of increasing anthropogenic soluble iron and nitrogen deposition on ocean biogeochemistry  

E-Print Network (OSTI)

and sulfur deposition on ocean acidification and thethe tropical North Atlantic Ocean, J. Geophys. Res. , 105,and iron inputs to the ocean, Global Biogeochem. Cycles, 19,

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Year-round observations of carbon biomass and flux variability in the Southern Ocean  

E-Print Network (OSTI)

carbon flux through the ocean's twilight zone. Science 316,et al. (2005). Anthropogenic ocean acidification over thethe northeastern North Atlantic Ocean. Nature 419, 603-607.

Bishop, James K.B.

2009-01-01T23:59:59.000Z

122

Coupled Ocean–Atmosphere Interaction and Variability in the Tropical Atlantic Ocean with and without an Annual Cycle  

Science Conference Proceedings (OSTI)

Many previous studies point to a connection between the annual cycle and interannual variability in the tropical Atlantic Ocean. To investigate the importance of the annual cycle in the generation of tropical Atlantic variability (TAV) as well as ...

Susan C. Bates

2008-11-01T23:59:59.000Z

123

The Annual Cycle of Meridional Heat Flux in the Atlantic Ocean at 26.5°N  

Science Conference Proceedings (OSTI)

Total meridional heat flux through a zonal oceanic section at 26.5°N in the Atlantic Ocean is computed from hydrographic, direct current and surface wind observations. The oceanic current and temperature fields are decomposed into depth-averaged ...

Robert L. Molinari; Elizabeth Johns; John F. Festa

1990-03-01T23:59:59.000Z

124

Wave Extremes in the North East Atlantic from Ensemble Forecasts  

Science Conference Proceedings (OSTI)

A method for estimating return values from ensembles of forecasts at advanced lead times is presented. Return values of significant wave height in the North-East Atlantic, the Norwegian Sea and the North Sea are computed from archived +240-h ...

Øyvind Breivik; Ole Johan Aarnes; Jean-Raymond Bidlot; Ana Carrasco; Øyvind Saetra

125

THE FOOD OF SKIPJACK AND YELLOWFIN TUNAS IN THE ATLANTIC OCEAN1  

E-Print Network (OSTI)

THE FOOD OF SKIPJACK AND YELLOWFIN TUNAS IN THE ATLANTIC OCEAN1 BY ALEXANDER DRAGOVICH, FISHERY Samples were examined from the stomachs of 1,060 skipjack tuna and 611 yellowfin tuna captured by live and yellowfin tunas in the Atlantic Ocean is part of an investigation of the ecology of Atlantic tunas carried

126

A Standard Analytic Curve of Potential Temperature versus Salinity for the Western North Atlantic  

Science Conference Proceedings (OSTI)

An algorithm is described for computing salinity as a continuous function of potential temperature for the western North Atlantic. The algorithm uses historical data compiled by Worthington and Melcalf (1961) for the deep western North Atlantic, ...

L. Armi; N. A. Bray

1982-04-01T23:59:59.000Z

127

Contrasting Response of the Eastern and Western North Atlantic Circulation to an Episodic Climate Event  

Science Conference Proceedings (OSTI)

Regional observational studies in the North Atlantic have noted significant hydrographical shifts in 1997–98 because of the episodic drop in the North Atlantic oscillation (NAO) during 1996. Investigation using a basin-scale model finds that, ...

Ayan H. Chaudhuri; Avijit Gangopadhyay; James J. Bisagni

2011-09-01T23:59:59.000Z

128

Oscillatory Climate Modes in the Eastern Mediterranean and Their Synchronization with the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

Oscillatory climatic modes over the North Atlantic, Ethiopian Plateau, and eastern Mediterranean were examined in instrumental and proxy records from these regions. Aside from the well-known North Atlantic Oscillation (NAO) index and the Nile ...

Yizhak Feliks; Michael Ghil; Andrew W. Robertson

2010-08-01T23:59:59.000Z

129

Mean and Variability of the Tropical Atlantic Ocean in the CCSM4  

Science Conference Proceedings (OSTI)

This study analyzes important aspects of the tropical Atlantic Ocean from simulations of the fourth version of the Community Climate System Model (CCSM4): the mean sea surface temperature (SST) and wind stress, the Atlantic warm pools, the ...

Ernesto Muñoz; Wilbert Weijer; Semyon A. Grodsky; Susan C. Bates; Ilana Wainer

2012-07-01T23:59:59.000Z

130

North Atlantic Hurricanes Contributed by African Easterly Waves North and South of the African Easterly Jet  

Science Conference Proceedings (OSTI)

A majority of tropical cyclones in the North Atlantic develop from African easterly waves (AEWs), which originate along both the southern and northern flanks of the midtropospheric African easterly jet (AEWS and AEWn, respectively). The purpose ...

Tsing-Chang Chen; Shih-Yu Wang; Adam J. Clark

2008-12-01T23:59:59.000Z

131

Inferring the Subduction Rate and Period over the North Atlantic  

Science Conference Proceedings (OSTI)

The annual rate at which mixed-layer fluid is transferred into the permanent thermocline—that is, the annual subduction rate Sann and the effective subduction period eff—is inferred from climatological data in the North Atlantic. From its ...

John C. Marshall; Richard G. Williams; A. J. George Nurser

1993-07-01T23:59:59.000Z

132

Estimated Seasonal Cycle of North Atlantic Eighteen Degree Water Volume  

Science Conference Proceedings (OSTI)

The seasonal cycle in the volume and formation rate of Eighteen Degree Water (EDW) in the North Atlantic is quantified over the 3-yr period from 2004 to 2006. The EDW layer is defined as all waters that have a temperature between 17° and 19°C. ...

Gaël Forget; Guillaume Maze; Martha Buckley; John Marshall

2011-02-01T23:59:59.000Z

133

A Tritium Box Model of the North Atlantic Thermocline  

Science Conference Proceedings (OSTI)

A box model of 1972 tritium observations on isopycnal surface in the main thermocline of the North Atlantic subtropical gyre is used to estimate the time scales and volume of exchange of the thermocline with respect to surface waters. The flux of ...

J. L. Sarmiento

1983-07-01T23:59:59.000Z

134

The Asymmetry of Western Boundary Currents in the Upper Atlantic Ocean  

Science Conference Proceedings (OSTI)

Observations of upper-ocean western boundary current (WBC) transports reveal asymmetries between the Northern and the Southern Hemispheres of the Atlantic Ocean. To find out what mechanism might cause these asymmetries the linearized steady-state ...

Reiner Onken

1994-05-01T23:59:59.000Z

135

Atlantic Ocean circulation at the last glacial maximum : inferences from data and models  

E-Print Network (OSTI)

This thesis focuses on ocean circulation and atmospheric forcing in the Atlantic Ocean at the Last Glacial Maximum (LGM, 18-21 thousand years before present). Relative to the pre-industrial climate, LGM atmospheric CO? ...

Dail, Holly Janine

2012-01-01T23:59:59.000Z

136

Interannual Variability in the Eastern Subtropical North Pacific Ocean  

Science Conference Proceedings (OSTI)

Interannual variability in the eastern subtropical North Pacific Ocean is investigated using the Naval Research Laboratory Layered Ocean Model (NLOM). Emphasis is placed on examining the nature of westward propagating Rossby waves and their ...

Alan P. Leonardi; Steven L. Morey; James J. O'Brien

2002-06-01T23:59:59.000Z

137

Lagrangian drifter dispersion in the southwestern Atlantic Ocean  

E-Print Network (OSTI)

In the framework of Monitoring by Ocean Drifters (MONDO) Project, a set of Lagrangian drifters were released in proximity of the Brazil Current, the western branch of the Subtropical Gyre in the South Atlantic Ocean. The experimental strategy of deploying part of the buoys in clusters offers the opportunity to examine relative dispersion on a wide range of scales. Adopting a dynamical systems approach, we focus our attention on scale-dependent indicators, like the finite-scale Lyapunov exponent (FSLE) and the finite-scale (mean square) relative velocity (FSRV) between two drifters as function of their separation, and compare them with classic time-dependent statistical quantities like the mean square relative displacement between two drifters and the effective diffusivity as functions of the time lag from the release. We find that, dependently on the given observable, the quasigeostrophic turbulence scenario is overall compatible with our data analysis, with discrepancies from the expected behavior of 2D turbulent trajectories likely to be ascribed to the non stationary and non homogeneous characteristics of the flow, as well as to possible ageostrophic effects. Submesoscale features of O(1) km are considered to play a role, to some extent, in determining the properties of relative dispersion as well as the shape of the energy spectrum. We present, also, numerical simulations of an OGCM of the South Atlantic, and discuss the comparison between experimental and model data about mesoscale dispersion.

Stefano Berti; Francisco Alves Dos Santos; Guglielmo Lacorata; Angelo Vulpiani

2011-10-17T23:59:59.000Z

138

Estimation of Meridional Heat Flux in the North Atlantic by Inverse Methods  

Science Conference Proceedings (OSTI)

Hydrographic sections spanning the Atlantic Ocean at 24, 36 and 48°N are used to make an estimate of meridional heat flux in the ocean. An inverse method provides reference level velocities for geostrophic calculations, consistent with ...

Dean Roemmich

1980-12-01T23:59:59.000Z

139

Mesoscale Structure of Precipitation Bands in a North Atlantic Winter Storm  

Science Conference Proceedings (OSTI)

The present study discusses the meso- and microscale structures of Precipitation regions within a midlatitude winter storm over the North Atlantic, observed during the Experiment on Rapidly Intensifying Cyclones over the Atlantic. Two wide ...

G. B. Raga; R. E. Stewart; J. W. Strapp

1994-09-01T23:59:59.000Z

140

Forced and Internal Twentieth-Century SST Trends in the North Atlantic  

Science Conference Proceedings (OSTI)

In recent years, two alarming trends in North Atlantic climate have been noted: an increase in the intensity and frequency of Atlantic hurricanes and a rapid decrease in Greenland ice sheet volume. Both of these phenomena occurred while a ...

Mingfang Ting; Yochanan Kushnir; Richard Seager; Cuihua Li

2009-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Tropical Oceanic Response to Extratropical Thermal Forcing in a Coupled Climate Model: A Comparison between the Atlantic and Pacific Oceans  

Science Conference Proceedings (OSTI)

The tropical oceanic response to the extratropical thermal forcing is quantitatively estimated in a coupled climate model. This work focuses on comparison of the responses between the tropical Atlantic and Pacific. Under the same extratropical ...

Haijun Yang; Lu Wang

2011-08-01T23:59:59.000Z

142

Warming of the North Pacific Ocean: Local Air–Sea Coupling and Remote Climatic Impacts  

Science Conference Proceedings (OSTI)

In this paper, global climatic response to the North Pacific oceanic warming is investigated in a series of coupled ocean–atmosphere modeling experiments. In the model, an idealized heating is imposed over the North Pacific Ocean, while the ocean ...

Lixin Wu; Chun Li

2007-06-01T23:59:59.000Z

143

The Lagrangian View of South Atlantic Interocean Exchange in a Global Ocean Model Compared with Inverse Model Results  

Science Conference Proceedings (OSTI)

Data from a global ocean general circulation model (OCCAM) has been used to investigate the interocean exchange of thermocline and intermediate waters in the South Atlantic Ocean. To resolve the pathways between different ocean basins a ...

J. Donners; S. S. Drijfhout

2004-05-01T23:59:59.000Z

144

Multiyear Observations of the Tropical Atlantic Atmosphere: Multidisciplinary Applications of the NOAA Aerosols and Ocean Science Expeditions  

Science Conference Proceedings (OSTI)

This paper gives an overview of a unique set of ship-based atmospheric data acquired over the tropical Atlantic Ocean during boreal spring and summer as part of ongoing National Oceanic and Atmospheric Administration (NOAA) Aerosols and Ocean Science ...

Nicholas R. Nalli; Everette Joseph; Vernon R. Morris; Christopher D. Barnet; Walter W. Wolf; Daniel Wolfe; Peter J. Minnett; Malgorzata Szczodrak; Miguel A. Izaguirre; Rick Lumpkin; Hua Xie; Alexander Smirnov; Thomas S. King; Jennifer Wei

2011-06-01T23:59:59.000Z

145

Atlantic Bluefin Tuna (Thunnus thynnus) Feeding Ecology and Potential Ecosystem Effects During Winter in North Carolina.  

E-Print Network (OSTI)

??Atlantic bluefin tuna (Thunnus thynnus) occupy North Carolina waters during winter months. Their potential impact on prey populations during this time has largely been unexplored.… (more)

Butler, Christopher Matthew

2007-01-01T23:59:59.000Z

146

Characteristics of the Atlantic Storm-Track Eddy Activity and Its Relation with the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

This study focuses on feedbacks of the high-frequency eddy activity onto the quasi-stationary circulation, particularly with regard to the North Atlantic Oscillation (NAO). The methodology consists of analyzing NCEP–NCAR reanalysis data and ...

G. Rivière; I. Orlanski

2007-02-01T23:59:59.000Z

147

An Intercomparison of a Bryan-Cox-Type Ocean Model and an Isopycnic Ocean Model. Part II: The Subtropical Gyre and Meridional Heat Transport  

Science Conference Proceedings (OSTI)

In a companion paper, two ocean general circulation models were implemented in order to simulate and intercompare the main features of the North Atlantic circulation: the Atlantic Isopycnic Model (AIM) and the Hadley Centre Bryan-Cox-type ocean ...

Robert Marsh; Adrian L. New; Malcolm J. Roberts; Richard A. Wood

1996-08-01T23:59:59.000Z

148

Sources of the Equatorial Undercurrent in the Atlantic in a High-Resolution Ocean Model  

Science Conference Proceedings (OSTI)

The ventilation of the Equatorial Undercurrent (EUC) in the Atlantic is investigated using data from a high-resolution ocean model. Overturning streamfunctions, subduction patterns, and pathways are determined from Eulerian and Lagrangian mean ...

Wilco Hazeleger; Pedro de Vries; Yann Friocourt

2003-04-01T23:59:59.000Z

149

The Impact of Horizontal Resolution on the Tropical Heat Budget in an Atlantic Ocean Model  

Science Conference Proceedings (OSTI)

An ocean general circulation model (OGCM) of the tropical Atlantic is coupled to an advective atmospheric boundary layer model. This configuration is used to investigate the hypothesis that resolving tropical instability waves (TIWs) in OGCMs ...

Markus Jochum; Raghu Murtugudde; Raffaele Ferrari; Paola Malanotte-Rizzoli

2005-03-01T23:59:59.000Z

150

Continuous, Array-Based Estimates of Atlantic Ocean Heat Transport at 26.5°N  

Science Conference Proceedings (OSTI)

Continuous estimates of the oceanic meridional heat transport in the Atlantic are derived from the Rapid Climate Change–Meridional Overturning Circulation (MOC) and Heatflux Array (RAPID–MOCHA) observing system deployed along 26.5°N, for the ...

W. E. Johns; M. O. Baringer; L. M. Beal; S. A. Cunningham; T. Kanzow; H. L. Bryden; J. J. M. Hirschi; J. Marotzke; C. S. Meinen; B. Shaw; R. Curry

2011-05-01T23:59:59.000Z

151

The Role of Ocean Dynamics in the Interaction between the Atlantic Meridional and Equatorial Modes  

Science Conference Proceedings (OSTI)

This study examines a mechanism of the interaction between the tropical Atlantic meridional and equatorial modes. To derive robust heat content (HC) variability, the ensemble-mean HC anomalies (HCA) of six state-of-the-art global ocean reanalyses ...

Jieshun Zhu; Bohua Huang; Zhaohua Wu

2012-05-01T23:59:59.000Z

152

An Eclectic Atlantic Ocean Circulation Model. Part I: The Meridional Flux of Heat  

Science Conference Proceedings (OSTI)

A model of the Atlantic has been formulated that combines ordinary quasi-geostrophic constraints (based upon the dynamic method and Ekman layer) with a great variety of additional information available about the time-average ocean circulation. ...

Carl Wunsch

1984-11-01T23:59:59.000Z

153

Direct Observations of the Mean Circulation at 48°N in the Atlantic Ocean  

Science Conference Proceedings (OSTI)

Eulerian velocity measurements carried out along 48°N in the Atlantic Ocean Provide averaged velocities with definite large-scale structure. This warrants an analysis of these mean velocity vectors within the framework of steady and large-scale ...

Michel Arhan; Alain Colin De Verdiere; Herlé Mercier

1989-02-01T23:59:59.000Z

154

Structural Characteristics of Deep Convective Systems over Tropical Africa and the Atlantic Ocean  

Science Conference Proceedings (OSTI)

The structural properties of convective cloud clusters of tropical Africa and the Atlantic Ocean are studied using six summers of Meteosat satellite data in the atmospheric infrared window. A cluster at a given brightness temperature threshold is ...

L. A. Toledo Machado; M. Desbois; J-Ph Duvel

1992-03-01T23:59:59.000Z

155

Spatial Inhomogeneities and the Spectral Behavior of Atmospheric Aerosol Optical Depth over the Atlantic Ocean  

Science Conference Proceedings (OSTI)

In this paper the results of investigations into atmospheric aerosol optical depth (AOD) over the Atlantic Ocean are discussed. The data were collected during five shipboard expeditions that took place between 1989 and 1996. Measurements were ...

Sergey M. Sakerin; Dmitry M. Kabanov

2002-02-01T23:59:59.000Z

156

Effect of Atlantic Meridional Overturning Circulation Changes on Tropical Atlantic Sea Surface Temperature Variability: A 2½-Layer Reduced-Gravity Ocean Model Study  

Science Conference Proceedings (OSTI)

Previous coupled climate model simulations reveal that a dipole-like SST pattern with cooler (warmer) temperature over the north (south) tropical Atlantic emerges in response to a slowdown of the Atlantic meridional overturning circulation (AMOC)...

Caihong Wen; Ping Chang; Ramalingam Saravanan

2010-01-01T23:59:59.000Z

157

The Influence of Surface Forcings on Prediction of the North Atlantic Oscillation Regime of Winter 2010/11  

Science Conference Proceedings (OSTI)

December 2010 was unusual both in the strength of the negative North Atlantic Oscillation (NAO) intense atmospheric blocking and the associated record-breaking low temperatures over much of northern Europe. The negative North Atlantic Oscillation ...

Anna Maidens; Alberto Arribas; Adam A. Scaife; Craig MacLachlan; Drew Peterson; Jeff Knight

2013-11-01T23:59:59.000Z

158

Summer Sea Surface Temperature Conditions in the North Atlantic and Their Impact upon the Atmospheric Circulation in Early Winter  

Science Conference Proceedings (OSTI)

The origin of the so-called summer North Atlantic “Horseshoe” (HS) sea surface temperature (SST) mode of variability, which is statistically linked to the next winter's North Atlantic Oscillation (NAO), is investigated from data and experiments ...

Christophe Cassou; Clara Deser; Laurent Terray; James W. Hurrell; Marie Drévillon

2004-09-01T23:59:59.000Z

159

The Influence of Surface Forcings on Prediction of the North Atlantic Oscillation Regime of Winter 2010-11.  

Science Conference Proceedings (OSTI)

December 2010 was unusual both in the strength of the negative North Atlantic Oscillation (NAO), intense atmospheric blocking and associated record-breaking low temperatures over much of Northern Europe. The negative North Atlantic oscillation for ...

Anna Maidens; Alberto Arribas; Adam A. Scaife; Craig MacLachlan; Drew Peterson; Jeff Knight

160

The North Atlantic Oscillation and greenhouse-gas forcing Svetlana I. Kuzmina,1  

E-Print Network (OSTI)

The North Atlantic Oscillation and greenhouse-gas forcing Svetlana I. Kuzmina,1 Lennart Bengtsson,2 in greenhouse-gas concentrations. Citation: Kuzmina, S. I., L. Bengtsson, O. M. Johannessen, H. Drange, L. P. Bobylev, and M. W. Miles (2005), The North Atlantic Oscillation and greenhouse-gas forcing, Geophys. Res

Drange, Helge

Note: This page contains sample records for the topic "north atlantic ocean" 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

Can North Atlantic Sea Ice Anomalies Account for Dansgaard–Oeschger Climate Signals?  

Science Conference Proceedings (OSTI)

North Atlantic sea ice anomalies are thought to play an important role in the abrupt Dansgaard–Oeschger (D–O) cycles of the last glacial period. This model study investigates the impacts of changes in North Atlantic sea ice extent in glacial ...

Camille Li; David S. Battisti; Cecilia M. Bitz

2010-10-01T23:59:59.000Z

162

Persistent Circulation Regimes and Preferred Regime Transitions in the North Atlantic  

Science Conference Proceedings (OSTI)

The persistent regime behavior of the eddy-driven jet stream over the North Atlantic is investigated. The North Atlantic jet stream variability is characterized by the latitude of the maximum lower tropospheric wind speed of the 40-yr ECMWF Re-...

Christian Franzke; Tim Woollings; Olivia Martius

2011-12-01T23:59:59.000Z

163

Decadal Variability of Two Oceans and an Atmosphere  

Science Conference Proceedings (OSTI)

A model of the midlatitude, large-scale interaction between the upper ocean and the troposphere is used to illustrate possible mechanisms of connection between the decadal variability in the North Atlantic and in the North Pacific. The two ocean ...

Blanca Gallego; Paola Cessi

2001-07-01T23:59:59.000Z

164

Velocity Probability Density Functions for Oceanic Floats  

Science Conference Proceedings (OSTI)

Probability density functions (PDFs) of daily velocities from subsurface floats deployed in the North Atlantic and equatorial Atlantic Oceans are examined. In general, the PDFs are approximately Gaussian for small velocities, but with significant ...

Annalisa Bracco; J. H. LaCasce; Antonello Provenzale

2000-03-01T23:59:59.000Z

165

A Reanalysis of the 1921–30 Atlantic Hurricane Database  

Science Conference Proceedings (OSTI)

A reanalysis of the Atlantic basin tropical storm and hurricane database (“best track”) for the period from 1921 to 1930 has been completed. This reassessment of the main archive for tropical cyclones of the North Atlantic Ocean, Caribbean Sea, ...

Christopher W. Landsea; Steve Feuer; Andrew Hagen; David A. Glenn; Jamese Sims; Ramon Perez; Michael Chenoweth; Nicholas Anderson

2012-02-01T23:59:59.000Z

166

Ocean Model Diagnosis of Low-Frequency Climate Variability in the South Atlantic Region  

Science Conference Proceedings (OSTI)

South Atlantic Ocean variability is investigated by means of an ocean general circulation model (ORCA2), forced with the NCEP–NCAR reanalyses for the 1948–99 period. A rotated EOF analysis of the mixed layer temperature suggests a breakdown of ...

Frank Colberg; C. J. C. Reason

2007-03-01T23:59:59.000Z

167

Did an Open Panama Isthmus Correspond to an Invasion of Pacific Water into the Atlantic?  

Science Conference Proceedings (OSTI)

Recent general circulation simulations suggest that, prior to the closure of the Panama Isthmus (the narrow strip of land connecting North and South America), low-salinity Pacific Ocean water invaded the Atlantic Ocean via the gap between North ...

Doron Nof; Stephen Van Gorder

2003-07-01T23:59:59.000Z

168

North Atlantic modeling of low-frequency variability in mode water formation  

E-Print Network (OSTI)

The generation of interannual and near-decadal variability in the formation of mode waters in the western North Atlantic is investigated in the realistic framework of an isopycnic coordinate ocean model forced with atmospheric data from 1946 to 1988. At Bermuda, the model reproduces quite well the observed potential vorticity and isopycnal depth anomalies associated with the subtropical mode water (STMW). Heat storage and preconditioning of the convective activity are found to be the important factors for the generation of STMW variability, with persistence of cold (warm) conditions, associated with anomalous heat loss (gain) over the western subtropics, being more significant for the generation of the simulated variability than are strong anomalous events in isolated years. In the Labrador Sea, the model captures the phase and order of magnitude of the observed near-decadal variability in the convective activity, if not its maximum amplitude. The simulated potential vorticity anomali...

Afonso M. Paiva; Eric P. Chassignet

2001-01-01T23:59:59.000Z

169

Leading Tropical Modes Associated with Interannual and Multidecadal Fluctuations in North Atlantic Hurricane Activity  

Science Conference Proceedings (OSTI)

Interannual and multidecadal extremes in Atlantic hurricane activity are shown to result from a coherent and interrelated set of atmospheric and oceanic conditions associated with three leading modes of climate variability in the Tropics. All ...

Gerald D. Bell; Muthuvel Chelliah

2006-02-01T23:59:59.000Z

170

On the Relationship between North Atlantic Sea Surface Temperatures and U.S. Hurricane Landfall Risk  

Science Conference Proceedings (OSTI)

In the recent literature, considerable attention has been paid to the relationship between climate signals and tropical cyclone activity. Much of the research has focused on Atlantic Ocean basin activity while less attention has been given to ...

Peter S. Dailey; Gerhard Zuba; Greta Ljung; Ioana M. Dima; Jayanta Guin

2009-01-01T23:59:59.000Z

171

New Insights into North European and North Atlantic Surface Pressure Variability, Storminess, and Related Climatic Change since 1830  

Science Conference Proceedings (OSTI)

The authors present initial results of a new pan-European and international storminess since 1800 as interpreted from European and North Atlantic barometric pressure variability (SENABAR) project. This first stage analyzes results of a new daily ...

Edward Hanna; John Cappelen; Rob Allan; Trausti Jónsson; Frank Le Blancq; Tim Lillington; Kieran Hickey

2008-12-01T23:59:59.000Z

172

RSS Feeds for Specific Tropical Cyclones of the North Atlantic, Caribbean  

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

RSS Feeds for Specific Tropical Cyclones of the North Atlantic, Caribbean RSS Feeds for Specific Tropical Cyclones of the North Atlantic, Caribbean Sea, and Gulf of Mexico (English) Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS COLLABORATE ABOUT Agriculture You are here Data.gov » Communities » Agriculture » Data RSS Feeds for Specific Tropical Cyclones of the North Atlantic, Caribbean Sea, and Gulf of Mexico (English) Dataset Summary Description The National Weather Service (NWS) National Hurricane Center uses regularly updated RSS feeds to disseminate North Atlantic, Caribbean Sea, and Gulf of Mexcio tropical cyclone and marine forecasts. Tags {hurricanes,"tropical cyclones",warning,watch," forecast",discussion,outlooks,"",marine,temperature," Atlantic","Caribbean Sea","Gulf of Mexico. "}

173

Surveying the Upper Ocean with the Ocean Surveyor: A New Phased Array Doppler Current Profiler  

Science Conference Proceedings (OSTI)

A new shipboard current profiler, a 75-kHz ocean surveyor, was operationally used during two research cruises in the tropical Atlantic and the subpolar North Atlantic, respectively. Here, a report is presented on the first experience with this ...

Jürgen Fischer; Peter Brandt; Marcus Dengler; Mario Müller; Darryl Symonds

2003-05-01T23:59:59.000Z

174

Classifying North Atlantic Tropical Cyclone Tracks by Mass Moments*  

E-Print Network (OSTI)

A new method for classifying tropical cyclones or similar features is introduced. The cyclone track is considered as an open spatial curve, with the wind speed or power information along the curve considered to be a mass attribute. The first and second moments of the resulting object are computed and then used to classify the historical tracks using standard clustering algorithms. Mass moments allow the whole track shape, length, and location to be incorporated into the clustering methodology. Tropical cyclones in the North Atlantic basin are clustered with K-means by mass moments, producing an optimum of six clusters with differing genesis locations, track shapes, intensities, life spans, landfalls, seasonal patterns, and trends. Even variables that are not directly clustered show distinct separation between clusters. A trend analysis confirms recent conclusions of increasing tropical cyclones in the basin over the past two decades. However, the trends vary across clusters. 1.

Yochanan Kushnir; Suzana; J. Camargo

2008-01-01T23:59:59.000Z

175

Does Net E ? P Set a Preference for North Atlantic Sinking?  

Science Conference Proceedings (OSTI)

The present-day global meridional overturning circulation (MOC) with formation of North Atlantic Deep Water (NADW) and the absence of a deep-water formation in the North Pacific is often considered to be caused by the fact that the North Pacific ...

Selma E. Huisman; Henk A. Dijkstra; A. S. von der Heydt; W. P. M. de Ruijter

2012-11-01T23:59:59.000Z

176

Multidecadal Covariability of North Atlantic Sea Surface Temperature, African Dust, Sahel Rainfall, and Atlantic Hurricanes  

E-Print Network (OSTI)

, and Atlantic Hurricanes CHUNZAI WANG NOAA/Atlantic Oceanographic and Meteorological Laboratory, Miami, Florida for Marine and Atmospheric Studies, University of Miami, Miami, Florida AMATO T. EVAN Department/Atlantic Oceanographic and Meteorological Laboratory, Miami, Florida SANG-KI LEE NOAA/Atlantic Oceanographic

Lee, Sang-ki

177

Eulerian Measurements of the North Atlantic Deep Water Deep Western Boundary Current at 18°S  

Science Conference Proceedings (OSTI)

An 18-month time series of moored current meter observations near 18°S in the Atlantic is used to study the deep western boundary current (DWBC) of North Atlantic Deep Water (NADW). This flow is taken to extend from about the shelf break seaward ...

Georges L. Weatherly; Yoo Yin Kim; Evgeny A. Kontar

2000-05-01T23:59:59.000Z

178

Variations in Apparent Mixing Efficiency in the North Atlantic Central Water  

Science Conference Proceedings (OSTI)

Microstructure data from the North Atlantic Tracer Release Experiment (NATRE) are presented, providing detailed profiles of the thermal variance ? in the upper 360 m of the Canary Basin for the fall and spring seasons. The Osborn–Cox model is ...

Barry Ruddick; David Walsh; Neil Oakey

1997-12-01T23:59:59.000Z

179

Climate–Carbon Cycle Model Response to Freshwater Discharge into the North Atlantic  

Science Conference Proceedings (OSTI)

The response of a coupled climate–carbon cycle model to discharge of freshwater into the North Atlantic is investigated with regard to cold reversals caused by meltwater from northern continental ice sheets such as the Younger Dryas during the ...

Atsushi Obata

2007-12-01T23:59:59.000Z

180

Modeling the Surface Heat Flux Response to Long-Lived SST Anomalies in the North Atlantic  

Science Conference Proceedings (OSTI)

An atmospheric general circulation model (AGCM), a simplified atmospheric model (SAM) of surface heat flux, and various idealized analytic models have been used to investigate the atmospheric response over the North Atlantic to SST anomalies ...

S. B. Power; R. Kleeman; R. A. Colman; B. J. McAvaney

1995-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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 Basic Ingredients of the North Atlantic Storm Track. Part II: Sea Surface Temperatures  

Science Conference Proceedings (OSTI)

The impact of North Atlantic SST patterns on the storm track is investigated using a hierarchy of GCM simulations using idealized (aquaplanet) and “semirealistic” boundary conditions in the atmospheric component (HadAM3) of the third climate ...

David James Brayshaw; Brian Hoskins; Michael Blackburn

2011-08-01T23:59:59.000Z

182

Response of the North Atlantic Thermohaline Circulation and Ventilation to Increasing Carbon Dioxide in CCSM3  

Science Conference Proceedings (OSTI)

The response of the North Atlantic thermohaline circulation to idealized climate forcing of 1% per year compound increase in CO2 is examined in three configurations of the Community Climate System Model version 3 that differ in their component ...

Frank O. Bryan; Gokhan Danabasoglu; Norikazu Nakashiki; Yoshikatsu Yoshida; Dong-Hoon Kim; Junichi Tsutsui; Scott C. Doney

2006-06-01T23:59:59.000Z

183

Shallow Pycnoclines and Mode Water Subduction in the Eastern North Atlantic  

Science Conference Proceedings (OSTI)

A Lagrangian one-dimensional model is used to study the subduction of Subpolar Mode Water in the eastern North Atlantic and to analyze recently observed hydrological features related to this process. Considering a southward moving column of mode ...

Jérôme Paillet; Michel Arhan

1996-01-01T23:59:59.000Z

184

Observational Analyses of North Atlantic Tropical Cyclones from NOAA Polar-Orbiting Satellite Microwave Data  

Science Conference Proceedings (OSTI)

Passive microwave observations from the current NOAA series of polar-orbiting satellites of a large sample of North Atlantic tropical cyclones are qualitatively and quantitatively analyzed. Microwave observations can penetrate the cloud cover ...

Christopher S. Velden

1989-01-01T23:59:59.000Z

185

Rewriting the Climatology of the Tropical North Atlantic and Caribbean Sea Atmosphere  

Science Conference Proceedings (OSTI)

The Jordan mean tropical sounding has provided a benchmark reference for representing the climatology of the tropical North Atlantic and Caribbean Sea atmosphere for over 50 years. However, recent observations and studies have suggested that ...

Jason P. Dunion

2011-02-01T23:59:59.000Z

186

Accuracy of Atlantic and Eastern North Pacific Tropical Cyclone Intensity Forecast Guidance  

Science Conference Proceedings (OSTI)

Five statistical and dynamical tropical cyclone intensity guidance techniques available at the National Hurricane Center (NHC) during the 2003 and 2004 Atlantic and eastern North Pacific seasons were evaluated within three intensity phases: (I) ...

Russell L. Elsberry; Tara D. B. Lambert; Mark A. Boothe

2007-08-01T23:59:59.000Z

187

Properties of Rossby Waves in the North Atlantic Estimated from Satellite Data  

Science Conference Proceedings (OSTI)

This study uses satellite observations of sea surface height (SSH) to detect westward-propagating anomalies, presumably baroclinic Rossby waves, in the North Atlantic and to estimate their period, wavelength, amplitude, and phase speed. Detection ...

Vladimir Osychny; Peter Cornillon

2004-01-01T23:59:59.000Z

188

Recent Variability of the North Atlantic Thermohaline Circulation Inferred from Surface Heat and Freshwater Fluxes  

Science Conference Proceedings (OSTI)

An annual-mean surface-forced component of the North Atlantic thermohaline circulation (THC) in density space, ?surf(?,?), is diagnosed from observed surface heat and freshwater fluxes. The climatological mean of ?surf over 1980–97 indicates ...

Robert Marsh

2000-09-01T23:59:59.000Z

189

Composite Analysis of North Atlantic Extratropical Cyclones in NCEP–NCAR Reanalysis Data  

Science Conference Proceedings (OSTI)

Composite analysis of North Atlantic midlatitudinal winter cyclones is performed using NCEP–NCAR reanalysis data for the 60-yr period from 1948 to 2007. The composites were developed using an advanced methodology involving the coordinate transform ...

Irina Rudeva; Sergey K. Gulev

2011-05-01T23:59:59.000Z

190

Oscillatory Climate Modes in the Indian Monsoon, North Atlantic and Tropical Pacific  

Science Conference Proceedings (OSTI)

This paper explores the three-way interactions between the Indian monsoon, the North Atlantic and the Tropical Pacific. Four climate records were analyzed: the monsoon rainfall in two Indian regions, the Southern Oscillation Index for the Tropical ...

Yizhak Feliks; Andreas Groth; Andrew W. Robertson; Michael Ghil

191

Observed Feedback between Winter Sea Ice and the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

Feedback between the North Atlantic Oscillation (NAO) and winter sea ice variability is detected and quantified using approximately 30 years of observations, a vector autoregressive model (VAR), and testable definitions of Granger causality and ...

Courtenay Strong; Gudrun Magnusdottir; Hal Stern

2009-11-01T23:59:59.000Z

192

On the Midlatitude Circulation in a High-Resolution Model of the North Atlantic  

Science Conference Proceedings (OSTI)

This paper describes, and establishes the dynamical mechanisms responsible for, the large-scale, time-mean, midlatitude circulation in a high-resolution model of the North Atlantic basin. The model solution is compared with recently proposed ...

Frank O. Bryan; Claus W. Böning; William R. Holland

1995-03-01T23:59:59.000Z

193

ENSO Suppression due to Weakening of the North Atlantic Thermohaline Circulation  

Science Conference Proceedings (OSTI)

Changes of the North Atlantic thermohaline circulation (THC) excite wave patterns that readjust the thermocline globally. This paper examines the impact of a freshwater-induced THC shutdown on the depth of the Pacific thermocline and its ...

A. Timmermann; S-I. An; U. Krebs; H. Goosse

2005-08-01T23:59:59.000Z

194

Seasonal Climate Trends, the North Atlantic Oscillation, and Salamander Abundance in the Southern Appalachian Mountain Region  

Science Conference Proceedings (OSTI)

The North Atlantic Oscillation (NAO) is a large-scale climate teleconnection that coincides with worldwide changes in weather. Its impacts have been documented at large scales, particularly in Europe, but not as much at regional scales. ...

Robert J. Warren II; Mark A. Bradford

2010-08-01T23:59:59.000Z

195

North Atlantic SSTs as a link between wintertime NAO and the following spring climate  

Science Conference Proceedings (OSTI)

In this paper we explore a potential seasonally-lagged impact of wintertime North Atlantic Oscillation (NAO) on the subsequent spring climate over European region. Supported by the observational indication of the wintertime NAO – spring climate ...

Ivana Herceg-Buli?; Fred Kucharski

196

Space and Time Scales of Mesoscale Motions in the Eastern North Atlantic  

Science Conference Proceedings (OSTI)

The Tourbillon experiment carried out in 1979–80 over the Porcupine Abyssal Plain in the eastern North Atlantic is the fist experiment providing data that allow an efficient description of the spatial structure of the mesoscale low-frequency ...

Herlé Mercier; Alain Colin De Verdiére

1985-02-01T23:59:59.000Z

197

Projected Increases in North Atlantic Tropical Cyclone Intensity from CMIP5 Models  

Science Conference Proceedings (OSTI)

Tropical cyclones—particularly intense ones—are a hazard to life and property, so an assessment of the changes in North Atlantic tropical cyclone intensity has important socioeconomic implications. In this study, the authors focus on the ...

Gabriele Villarini; Gabriel A. Vecchi

2013-05-01T23:59:59.000Z

198

The Ability of CMIP5 Models to Simulate North Atlantic Extratropical Cyclones  

Science Conference Proceedings (OSTI)

The ability of the climate models participating in phase 5 of the Coupled Model Intercomparison Project (CMIP5) to simulate North Atlantic extratropical cyclones in winter [December–February (DJF)] and summer [June–August (JJA)] is investigated in ...

Giuseppe Zappa; Len C. Shaffrey; Kevin I. Hodges

2013-08-01T23:59:59.000Z

199

North Atlantic Oscillation Influence on Precipitation Variability around the Southeast African Convergence Zone  

Science Conference Proceedings (OSTI)

The relationship between the North Atlantic oscillation (NAO) and austral summer (December–February) rainfall variability over southeastern Africa is described. Thirty-one stations in 0°–16°S and 25°–40°E have statistically significant ...

Maurice J. McHugh; Jeffrey C. Rogers

2001-09-01T23:59:59.000Z

200

Seasonal-to-Decadal Predictability and Prediction of North American Climate—The Atlantic Influence  

Science Conference Proceedings (OSTI)

The question of the impact of the Atlantic on North American (NA) seasonal prediction skill and predictability is examined. Basic material is collected from the literature, a review of seasonal forecast procedures in Canada and the United States, ...

H. M. Van den Dool; Peitao Peng; Åke Johansson; Muthuvel Chelliah; Amir Shabbar; Suranjana Saha

2006-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Extreme Cold Winter Temperatures in Europe under the Influence of North Atlantic Atmospheric Blocking  

Science Conference Proceedings (OSTI)

North Atlantic atmospheric blocking conditions explain part of the winter climate variability in Europe, being associated with anomalous cold winter temperatures. In this study, the generalized extreme value (GEV) distribution is fitted to monthly ...

Jana Sillmann; Mischa Croci-Maspoli; Malaak Kallache; Richard W. Katz

2011-11-01T23:59:59.000Z

202

The Importance of Lateral Diffusion for the Ventilation of the Lower Thermocline in the Subtropical North Atlantic  

Science Conference Proceedings (OSTI)

An analysis of the physical mechanisms contributing to the ventilation of the lower subtropical thermocline (26.5 < ?? < 27.3) of the North Atlantic is presented. Examination of the surface forcing suggests that this density range in the Atlantic ...

Paul E. Robbins; James F. Price; W. Brechner Owens; William J. Jenkins

2000-01-01T23:59:59.000Z

203

Two Decades of the Atlantic Meridional Overturning Circulation: Anatomy, Variations, Extremes, Prediction, and Overcoming Its Limitations  

Science Conference Proceedings (OSTI)

The zonally integrated meridional volume transport in the North Atlantic [Atlantic meridional overturning circulation (AMOC)] is described in a 19-yr-long ocean-state estimate, one consistent with a diverse global dataset. Apart from a weak ...

Carl Wunsch; Patrick Heimbach

2013-09-01T23:59:59.000Z

204

The Atlantic Multidecadal Oscillation Inferred from the Forced Climate Response in Coupled General Circulation Models  

Science Conference Proceedings (OSTI)

Instrumental sea surface temperature records in the North Atlantic Ocean are characterized by large multidecadal variability known as the Atlantic multidecadal oscillation (AMO). The lack of strong oscillatory forcing of the climate system at ...

Jeff R. Knight

2009-04-01T23:59:59.000Z

205

Annual Cycle of Subsurface Thermal Structure in the Tropical Atlantic Ocean  

Science Conference Proceedings (OSTI)

The subsurface thermal structure in the tropical Atlantic Ocean (30°N–20°S, East of 80°W) is studied on the basis of an extensive data bank of subsurface soundings. Calendar monthly maps are presented showing mixed layer depth, base of ...

Stefan Hastenrath; Jacques Merle

1987-09-01T23:59:59.000Z

206

Dynamical Reconstruction of Upper-ocean Conditions in the Last Glacial Maximum Atlantic  

Science Conference Proceedings (OSTI)

Proxies indicate that the Last Glacial Maximum (LGM) Atlantic Ocean was marked by increased meridional and zonal near-sea-surface temperature gradients relative to today. Using a least-squares fit of a full general circulation and sea-ice model to ...

Holly Dail; Carl Wunsch

207

Navy Coastal Ocean Model (NCOM), South Atlantic Bight | Data...  

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

first-generation global system, a progression of planned ocean analysis and forecast systems delivered for Navy operations at the Naval Oceanographic Office (NAVOCEANO)....

208

Distribution of thiols in the northwest Atlantic Ocean.  

E-Print Network (OSTI)

??Thiol substances can form stable complexes with metals (especially copper and mercury) in the surface ocean that can impact cycling and bioavailability of those elements.… (more)

Kading, Tristan

2013-01-01T23:59:59.000Z

209

Contemporary population structure and historical demography of sailfish (Istiophorus platypterus) in the Atlantic Ocean  

E-Print Network (OSTI)

The Atlantic sailfish (Istiophorus platypterus) is considered over-fished in U.S. waters. Furthermore, preliminary analyses of abundance indicate that a decline in biomass has occurred. While seminal studies have provided useful baseline data about intra- and inter-oceanic variation within sailfish, such studies may have underestimated the amount of genetic variability as a result of small sample sizes and the poor resolution of restriction fragment length polymorphism data. We used 263 base pairs from the hypervariable mitochondrial control region and fragment polymorphisms from five microsatellite loci to assess the contemporary population structure between eastern (n = 30) and western (n = 192) Atlantic sailfish stocks. We failed to reject the hypothesis of panmixia in Atlantic sailfish; however, higher levels of genetic variation were observed within the eastern Atlantic sailfish, and the nature of this difference needs to be investigated further. Having found no evidence of transatlantic differentiation, we pooled the Atlantic samples (n = 222) and compared them to a sample from the eastern Pacific (n = 22) and rejected the null hypothesis, concluding that sailfish from separate ocean basins do not share a common gene pool. We also found evidence of a recent sudden expansion of Clade I (the ubiquitous clade found in both Atlantic and Pacific Oceans) sailfish into the Atlantic that appears to have occurred between 164000 and 351000 years ago, coinciding with interglacial periods during the Pleistocene. This study also presents the first evidence of a recent sudden expansion of sailfish into the eastern Pacific, roughly 85400 to 173000 years ago, following a period when cooling in the eastern Pacific would have restricted the sailfish range to the warmer waters of the western Indo-Pacific. We emphasize that sailfish from this region of the Pacific are phenotypically distinct from those in the rest of the species' range and encourage further studies in order to determine if the eastern Pacific sailfish population should be managed as a separate stock.

Bangma, Jessica

2006-08-01T23:59:59.000Z

210

Variability of the Winter Wind Waves and Swell in the North Atlantic and North Pacific as Revealed by the Voluntary Observing Ship Data  

Science Conference Proceedings (OSTI)

This paper analyses secular changes and interannual variability in the wind wave, swell, and significant wave height (SWH) characteristics over the North Atlantic and North Pacific on the basis of wind wave climatology derived from the visual ...

Sergey K. Gulev; Vika Grigorieva

2006-11-01T23:59:59.000Z

211

Coordinated Abrupt Weakening of the Eurasian and North African Monsoons in the 1960s and Links to Extratropical North Atlantic Cooling  

Science Conference Proceedings (OSTI)

Previous modeling and paleoclimate studies have suggested that cooling originating from the extratropical North Atlantic can abruptly weaken the Eurasian and North African monsoons. The climatic signature includes a widespread cooling over the ...

Y. Liu; J. C. H. Chiang

2012-05-01T23:59:59.000Z

212

Distribution of thiols in the northwest Atlantic Ocean  

E-Print Network (OSTI)

Thiol substances can form stable complexes with metals (especially copper and mercury) in the surface ocean that can impact cycling and bioavailability of those elements. In this study, I present seven concentration profiles ...

Kading, Tristan James

2013-01-01T23:59:59.000Z

213

Predictors of Tropical Cyclone Numbers and Extreme Hurricane Intensities over the North Atlantic Using Generalized Additive and Linear Models  

Science Conference Proceedings (OSTI)

Fluctuations of the annual number of tropical cyclones over the North Atlantic and of the energy dissipated by the most intense hurricane of a season are related to a variety of predictors [global temperature, SST and detrended SST, North ...

Olivier Mestre; Stéphane Hallegatte

2009-02-01T23:59:59.000Z

214

A Reanalysis of the 1944–53 Atlantic Hurricane Seasons—The First Decade of Aircraft Reconnaissance  

Science Conference Proceedings (OSTI)

The main historical archive of all tropical storms, subtropical storms, and hurricanes in the North Atlantic Ocean, Caribbean Sea, and Gulf of Mexico from 1851 to the present is known as the Atlantic hurricane database (HURDAT), which is the ...

Andrew B. Hagen; Donna Strahan-Sakoskie; Christopher Luckett

2012-07-01T23:59:59.000Z

215

On Estimates of Historical North Atlantic Tropical Cyclone Activity  

Science Conference Proceedings (OSTI)

In this study, an estimate of the expected number of Atlantic tropical cyclones (TCs) that were missed by the observing system in the presatellite era (between 1878 and 1965) is developed. The significance of trends in both number and duration ...

Gabriel A. Vecchi; Thomas R. Knutson

2008-07-01T23:59:59.000Z

216

Multidecadal Variability in North Atlantic Tropical Cyclone Activity  

Science Conference Proceedings (OSTI)

Recent increases in Atlantic basin tropical cyclone activity since 1995 and the associated destructive U.S. landfall events in 2004 and 2005 have generated considerable interest into why there has been such a sharp upturn. Natural variability, ...

Philip J. Klotzbach; William M. Gray

2008-08-01T23:59:59.000Z

217

Convection over Tropical Africa and the Atlantic Ocean during Northern Summer. Part I: Interannual and Diurnal Variations  

Science Conference Proceedings (OSTI)

Some aspects of the interannual and the diurnal variations of the convection over the tropical Africa and the Atlantic Ocean are derived using Meteosat data. The study is based on four summer months (June, July, August and September) of three ...

Jean Philippe Duvel

1989-12-01T23:59:59.000Z

218

The Diurnal Variation of Atlantic Ocean Tropical Cyclone aoud DistributionInferred from Geostationary Satellite Infrared Measurements  

Science Conference Proceedings (OSTI)

Satellite-measured equivalent blackbody temperatures of Atlantic Ocean tropical cyclones are used to describe the associated convection and cloud patterns. Average equivalent blackbody temperatures were developed from 538 geostationary satellite ...

Joseph Steranka; Edward B. Rodgers; R. Cecil Gentry

1984-11-01T23:59:59.000Z

219

Annual and Interannual Variation of the Freshwater Budget in the Tropical Atlantic Ocean and the Caribbean Sea  

Science Conference Proceedings (OSTI)

Annual and interannual variations of the moisture and freshwater budgets are examined in the tropical Atlantic Ocean and the Caribbean Sea. The seasonal moisture budget (E–P) is calculated by estimating precipitation from 11 years of outgoing ...

Jung-Moon Yoo; James A. Carton

1990-06-01T23:59:59.000Z

220

Evolution of the Lorenz Energy Cycle in the Intertropical Convergence Zone in the South American Sector of the Atlantic Ocean  

Science Conference Proceedings (OSTI)

The intertropical convergence zone (ITCZ) in the South American sector of the Atlantic Ocean is identified using outgoing longwave radiation (OLR) data in order to investigate the evolution of the Lorenz energy cycle in the region dominated by ...

Ligia A. Da Silva; Prakki Satyamurty

2013-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Decadal Predictability of the Atlantic Ocean in a Coupled GCM: Forecast Skill and Optimal Perturbations Using Linear Inverse Modeling  

Science Conference Proceedings (OSTI)

The decadal predictability of three-dimensional Atlantic Ocean anomalies is examined in a coupled global climate model [the third climate configuration of the Met Office Unified Model (HadCM3)] using a linear inverse modeling (LIM) approach. It ...

Ed Hawkins; Rowan Sutton

2009-07-01T23:59:59.000Z

222

A Zonally Averaged Ocean Model for the Thermohaline Circulation. Part II: Interocean Circulation in the Pacific-Atlantic Basin System  

Science Conference Proceedings (OSTI)

The zonally averaged, latitude-depth ocean model, developed in Part I, is extended to a two-basin system representing the Atlantic and Pacific. Steady states are calculated under two different surface boundary conditions to study a possible ...

Thomas F. Stocker; Daniel G. Wright

1991-12-01T23:59:59.000Z

223

SOFAR Float Observations of an Intermediate-Depth Eastern Boundary Current and Mesoscale Variability in the Eastern Tropical Atlantic Ocean  

Science Conference Proceedings (OSTI)

Two neutrally buoyant SOFAR floats vigorously looped and meandered at depths of 950–1150 m in the eastern tropical Atlantic Ocean. The float trajectories illustrate a poleward flow along the tropical eastern boundary and significant intermediate-...

David M. Fratantoni; Philip L. Richardson

1999-06-01T23:59:59.000Z

224

Variability of the Tropical Atlantic Ocean Simulated by a General Circulation Model with Two Different Mixed-Layer Physics  

Science Conference Proceedings (OSTI)

The embedment of a 1.5 turbulence closure model in an ocean general circulation model of the equatorial Atlantic is presented. The eddy viscosity and diffusivity involved in the vertical mixing are defined as the product of a characteristic ...

Bruno Blanke; Pascale Delecluse

1993-07-01T23:59:59.000Z

225

North Atlantic geoid high, volcanism and glaciations Eugenio Carminati1,2  

E-Print Network (OSTI)

a regional geoid high. The upper mantle, being pumped from the deep mantle and rising to a few km shallower underlies the youngest (part of the Atlantic Ocean. This portion of the northern on various grounds [e.g., Foulger and Anderson, 2005]: the persistence of magmatism on the westerly moving

Doglioni, Carlo

226

The Increasing Wave Height in the North Atlantic Ocean  

Science Conference Proceedings (OSTI)

There are indications that the mean significant wave height at Seven Stones Light Vessel has increased in the period 1960–85. This is of considerable interest for the design of offshore structures and for coastal defense. In this note, the ...

E. Bouws; D. Jannink; G. J. Komen

1996-10-01T23:59:59.000Z

227

Heat and Mass Budgets of the Warm Upper Layer of the Tropical Atlantic Ocean in 1979–99  

Science Conference Proceedings (OSTI)

The mass and heat budgets of the warm upper-ocean layer are investigated in the equatorial Atlantic using in situ observations during the period 1979–99, which encompassed a series of warm events in the equatorial Atlantic. The warm water layer ...

F. Vauclair; Y. du Penhoat; G. Reverdin

2004-04-01T23:59:59.000Z

228

Fast Northward Energy Transfer in the Atlantic due to Agulhas Rings  

Science Conference Proceedings (OSTI)

The adiabatic transit time of wave energy radiated by an Agulhas ring released in the South Atlantic Ocean to the North Atlantic Ocean is investigated in a two-layer ocean model. Of particular interest is the arrival time of baroclinic energy in ...

Erik van Sebille; Peter Jan van Leeuwen

2007-09-01T23:59:59.000Z

229

The Adequacy of Observing Systems in Monitoring the Atlantic Meridional Overturning Circulation and North Atlantic Climate  

Science Conference Proceedings (OSTI)

The Atlantic meridional overturning circulation (AMOC) has an important influence on climate, and yet adequate observations of this circulation are lacking. Here, the authors assess the adequacy of past and current widely deployed routine ...

S. Zhang; A. Rosati; T. Delworth

2010-10-01T23:59:59.000Z

230

Seasonal Influences on Coupled Ocean–Atmosphere Variability in the Tropical Atlantic Ocean  

Science Conference Proceedings (OSTI)

Numerous studies and observational analyses point to a connection between the annual cycle and tropical Atlantic variability, specifically the influence of the seasons. Although a previous study has shown that the annual cycle is not necessary ...

Susan C. Bates

2010-02-01T23:59:59.000Z

231

Linearity of the Atmospheric Response to North Atlantic SST and Sea Ice Anomalies  

Science Conference Proceedings (OSTI)

The observations of the ocean–atmosphere–sea ice have recently revealed that the oceanic surfaces can have a subtle but significant impact on the atmospheric long-term fluctuations. Low-frequency variations and long-term trends of the North ...

Sébastien Conil; Laurent Z-X. Li

2005-06-01T23:59:59.000Z

232

North Atlantic Potential Vorticity and Its Relation to the General Circulation  

Science Conference Proceedings (OSTI)

Maps and sections of the large-scale North Atlantic potential vorticity q are presented. Here q is fd?/dz, where f is the Coriolis frequency, ? the potential density and z the vertical coordinate. They bear on the general circulation, and on ...

Scott McDowell; Peter Rhines; Thomas Keffer

1982-12-01T23:59:59.000Z

233

Impact of Freshwater Release in the North Atlantic under Different Climate Conditions in an OAGCM  

Science Conference Proceedings (OSTI)

The response of climate to freshwater input in the North Atlantic (NA) has raised a lot of concern about the issue of climate stability since the discovery of abrupt coolings during the last glacial period. Such coolings have usually been related ...

Didier Swingedouw; Juliette Mignot; Pascale Braconnot; Eloi Mosquet; Masa Kageyama; Ramdane Alkama

2009-12-01T23:59:59.000Z

234

The Relative Importance of Northern Overflow and Subpolar Deep Convection for the North Atlantic Thermohaline Circulation  

Science Conference Proceedings (OSTI)

The relative importance of the formation of different North Atlantic Deep Water masses on the meridional overturning is examined with a non-eddy-resolving version of the CME model. In contrast to a frequently held belief, convective deep-water ...

Ralf Döscher; René Redler

1997-09-01T23:59:59.000Z

235

SOFAR Floats Reveal Midlatitude Intermediate North Atlantic General Circulation. Part II: An Eulerian Statistical View  

Science Conference Proceedings (OSTI)

Part I of this paper has given a descriptive view of the trajectories of 26 SOFAR floats drifting near 700-m depth in the central North Atlantic during the mid-1980s, as part of the TOPOGULF experiment. Here an Eulerian analysis of the 53.4 ...

Michel Ollitrault; Alain Colin de Verdière

2002-07-01T23:59:59.000Z

236

Quantifying the Role of Mixed Layer Entrainment for Water Mass Transformation in the North Atlantic  

Science Conference Proceedings (OSTI)

Forcing by wind stress and air–sea buoyancy flux climatologies between ?t = 23.5 and 26.5 results in differing water mass transformations in the North Atlantic, reflecting the opposing tendencies of wind stress and air–sea fluxes. This difference ...

Amit Tandon; Konstantin Zahariev

2001-04-01T23:59:59.000Z

237

Absolute Geostrophic Velocity Determination from Historical Hydrographic Data in the Western North Atlantic  

Science Conference Proceedings (OSTI)

Beta-spiral calculations are presented using averaged western North Atlantic hydrographic data from the period 1914–73. Profiles of long-term mean geostrophic flow relative to ISM db along 70°W from 26 to 32°N are shown. Absolute reference ...

Eric J. Lindstrom; David W. Behringer; Bruce A. Taft; Curtis C. Ebbesmeyer

1980-07-01T23:59:59.000Z

238

An Empirical Eigenfunction Analysis of Sea Surface Temperatures in the Western North Atlantic  

Science Conference Proceedings (OSTI)

The empirical orthogonal function decomposition is used to analyze time records of AVHRR sea surfacetemperature observations of the western North Atlantic from 32.9° to 43.6°N, 62.7° to 76.3°W. A manuallydeclouded dataset covering the spring of ...

Richard Everson; Peter Cornillon; Lawrence Sirovich; Andrew Webber

1997-03-01T23:59:59.000Z

239

Vertical Eddy Energy Fluxes in the North Atlantic Subtropical and Subpolar Gyres  

Science Conference Proceedings (OSTI)

Eddy energy generation and energy fluxes are examined in a realistic eddy-resolving model of the North Atlantic. Over 80% of the wind energy input is found to be released by the generation of eddies through baroclinic instability. The eddy energy ...

Xiaoming Zhai; David P. Marshall

2013-01-01T23:59:59.000Z

240

Error Budget of Inverse Box Models: The North Atlantic  

Science Conference Proceedings (OSTI)

Linear inverse box models based on hydrographic data are widely used to estimate the ocean circulation and associated transports of heat and of other important quantities. The inverse method permits calculation of a circulation that is consistent ...

Alexandre Ganachaud

2003-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Simulation of North Atlantic Low-Frequency SST Variability  

Science Conference Proceedings (OSTI)

The role of atmospheric circulation anomalies in generating midlatitude sea surface temperature (SST) variability is investigated by means of ocean general circulation model (OGCM) experiments, in which observed winds are prescribed during the ...

Ute Luksch

1996-09-01T23:59:59.000Z

242

Characteristics of Landfalling Atmospheric Rivers Inferred from Satellite Observations over the Eastern North Pacific Ocean  

Science Conference Proceedings (OSTI)

Narrow elongated regions of moisture transport known as atmospheric rivers (ARs), which affect the West Coast of North America, were simultaneously observed over the eastern North Pacific Ocean by the polar orbiting CloudSat and Aqua satellites. ...

Sergey Y. Matrosov

243

An Observational Estimate of Volume and Freshwater Flux Leaving the Arctic Ocean through Nares Strait  

Science Conference Proceedings (OSTI)

The Arctic Ocean is an important link in the global hydrological cycle, storing freshwater and releasing it to the North Atlantic Ocean in a variable fashion as pack ice and freshened seawater. An unknown fraction of this return flow passes ...

Andreas Münchow; Humfrey Melling; Kelly K. Falkner

2006-11-01T23:59:59.000Z

244

Inverse Analysis Adjustment of the SOC Air–Sea Flux Climatology Using Ocean Heat Transport Constraints  

Science Conference Proceedings (OSTI)

Results are presented from a linear inverse analysis of the Southampton Oceanography Centre (SOC) air–sea flux climatology using 10 hydrographic ocean heat transport constraints distributed throughout the Atlantic and North Pacific Oceans. A ...

Jeremy P. Grist; Simon A. Josey

2003-10-01T23:59:59.000Z

245

An Investigation of Explosively Deepening Oceanic Cyclones  

Science Conference Proceedings (OSTI)

The explosively deepening oceanic cyclone or “bomb,” one which has central pressure falls of 12 mb (12 h)?1 or greater, has been studied using composites constructed from North Atlantic and Pacific weather ship rawinsonde data during the period ...

Eric Rogers; Lance F. Bosart

1986-04-01T23:59:59.000Z

246

Are the Winters 2010 and 2012 Archetypes Exhibiting Extreme Opposite Behavior of the North Atlantic Jet Stream?  

Science Conference Proceedings (OSTI)

The atmospheric circulation over the North Atlantic–European sector experienced exceptional but highly contrasting conditions in the recent 2010 and 2012 winters (November–March, with the year dated by the relevant January). Evidence is given for ...

João A. Santos; Tim Woollings; Joaquim G. Pinto

2013-10-01T23:59:59.000Z

247

The Basic Ingredients of the North Atlantic Storm Track. Part I: Land–Sea Contrast and Orography  

Science Conference Proceedings (OSTI)

Understanding and predicting changes in storm tracks over longer time scales is a challenging problem, particularly in the North Atlantic. This is due in part to the complex range of forcings (land–sea contrast, orography, sea surface ...

David James Brayshaw; Brian Hoskins; Michael Blackburn

2009-09-01T23:59:59.000Z

248

Are the winters 2010 and 2012 archetypes exhibiting extreme opposite behavior of the North Atlantic jet stream?  

Science Conference Proceedings (OSTI)

The atmospheric circulation over the North Atlantic-European sector experienced exceptional but highly contrasting conditions in the recent 2010 and 2012 winters (November-March; with the year dated by the relevant January). Evidence is given for ...

João A. Santos; Tim Woollings; Joaquim G. Pinto

249

Deep-Water Formation and Meridional Overturning in a High-Resolution Model of the North Atlantic  

Science Conference Proceedings (OSTI)

The authors use different versions of the model of the wind- and thermohaline-driven circulation in the North and Equatorial Atlantic developed under the WOCE Community Modeling Effort to investigate the mean flow pattern and deep-water formation ...

Claus W. Böning; Frank O. Bryan; William R. Holland; Ralf Döscher

1996-07-01T23:59:59.000Z

250

The North Atlantic Circulation in the Early 1980s-An Estimate from Inversion of a Finite-Difference Model  

Science Conference Proceedings (OSTI)

A finite-difference model of the North Atlantic is constructed for the purpose Of making an estimate of the circulation through an inverse calculation. The database is eclectic, and includes hydrography, oxygen, nutrients current meter and float ...

Françoise Martel; Carl Wunsch

1993-05-01T23:59:59.000Z

251

Anisotropic Material Transport by Eddies and Eddy-Driven Currents in a Model of the North Atlantic  

Science Conference Proceedings (OSTI)

This study analyzes anisotropic properties of the material transport by eddies and eddy-driven zonal jets in a general circulation model of the North Atlantic through the analysis of Lagrangian particle trajectories. Spreading rates—defined here ...

Igor Kamenkovich; Pavel Berloff; Joseph Pedlosky

2009-12-01T23:59:59.000Z

252

A Relationship of Isentropic Back Trajectories with Observed Wind Direction and Synoptic Type in the North Atlantic  

Science Conference Proceedings (OSTI)

A spring season sample of isentropic back trajectories for the North Atlantic region is presented. The sample data, derived from select time periods during four spring seasons, are used to investigate the relationship of three-dimensional ...

Philip L. Haagenson; Paul D. Sperry

1989-01-01T23:59:59.000Z

253

Seasonal and Low-Frequency Variability of the Meridional Heat Flux at 36°N in the North Atlantic  

Science Conference Proceedings (OSTI)

Historical hydrographic sections are used to investigate the seasonal and interannual variability in the meridional heat flux at 36°N in the North Atlantic. The data consist of ten transatlantic sections and sections from four sectors, which ...

Olga T. Sato; T. Rossby

2000-03-01T23:59:59.000Z

254

The Role of the North Atlantic Oscillation in Shaping Regional-Scale Peak Seasonal Precipitation across the Indian Subcontinent  

Science Conference Proceedings (OSTI)

The present study focuses on the impact of the North Atlantic Oscillation (NAO) in shaping the regional-level precipitation during the peak months of the two main rainy seasons over the Indian subcontinent. Monthly precipitation data from 1871 to ...

Shouraseni Sen Roy

2011-01-01T23:59:59.000Z

255

A Multimodel Assessment of Future Projections of North Atlantic and European Extratropical Cyclones in the CMIP5 Climate Models  

Science Conference Proceedings (OSTI)

The response of North Atlantic and European extratropical cyclones to climate change is investigated in the climate models participating in phase 5 of the Coupled Model Intercomparison Project (CMIP5). In contrast to previous multimodel studies, a ...

Giuseppe Zappa; Len C. Shaffrey; Kevin I. Hodges; Phil G. Sansom; David B. Stephenson

2013-08-01T23:59:59.000Z

256

The Structure, Dynamics, and Origin of a Small-Scale Lens of Water in the Western North Atlantic Thermocline  

Science Conference Proceedings (OSTI)

A small-scale, isolated, anticyclonically rotating lens of water was observed in the western North Atlantic thermocline during the POLYMODE Local Dynamics Experiment. Using a combination of SOFAR float, hydrographic, nutrient, and moored current ...

Stephen C. Riser; W. Brechner Owens; H. Thomas Rossby; Curtis C. Ebbesmeyer

1986-03-01T23:59:59.000Z

257

Synoptic Composites of the Extratropical Transition Life Cycle of North Atlantic Tropical Cyclones: Factors Determining Posttransition Evolution  

Science Conference Proceedings (OSTI)

A 34-member ensemble-mean trajectory through the cyclone phase space (CPS) is calculated using Navy Operational Global Atmospheric Prediction System (NOGAPS) analyses for North Atlantic tropical cyclones (TCs) undergoing extratropical transition (...

Robert E. Hart; Jenni L. Evans; Clark Evans

2006-02-01T23:59:59.000Z

258

Moored Observations of Western Boundary Current Variability and Thermohaline Circulation at 26.5° in the Subtropical North Atlantic  

Science Conference Proceedings (OSTI)

A 5.8-year time series of moored current meter observations is used with hydrographic section data, CME model results, and gridded wind fields over the North Atlantic to describe the mean structure and variability of circulation and volume ...

Thomas N. Lee; William E. Johns; Rainer J. Zantopp; Eve R. Fillenbaum

1996-06-01T23:59:59.000Z

259

North Atlantic Power Dissipation Index (PDI) and Accumulated Cyclone Energy (ACE): Statistical Modeling and Sensitivity to Sea Surface Temperature Changes  

Science Conference Proceedings (OSTI)

This study focuses on the statistical modeling of the power dissipation index (PDI) and accumulated cyclone energy (ACE) for the North Atlantic basin over the period 1949–2008, which are metrics routinely used to assess tropical storm activity, ...

Gabriele Villarini; Gabriel A. Vecchi

2012-01-01T23:59:59.000Z

260

A Preoperational Scheme for Calculating Sea Surface Height by Bernoulli Inverse of Argo Float Data in the North Atlantic  

Science Conference Proceedings (OSTI)

A preoperational scheme has been implemented to calculate sea surface height fields at 7-day intervals over the North Atlantic. Input data from Argo floats is downloaded and processed in near–real time. The solution method is by Bernoulli ...

Steven G. Alderson; Peter D. Killworth

2005-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Daily Mean Sea Level Pressure Reconstructions for the European–North Atlantic Region for the Period 1850–2003  

Science Conference Proceedings (OSTI)

The development of a daily historical European–North Atlantic mean sea level pressure dataset (EMSLP) for 1850–2003 on a 5° latitude by longitude grid is described. This product was produced using 86 continental and island stations distributed ...

T. J. Ansell; P. D. Jones; R. J. Allan; D. Lister; D. E. Parker; M. Brunet; A. Moberg; J. Jacobeit; P. Brohan; N. A. Rayner; E. Aguilar; H. Alexandersson; M. Barriendos; T. Brandsma; N. J. Cox; P. M. Della-Marta; A. Drebs; D. Founda; F. Gerstengarbe; K. Hickey; T. Jónsson; J. Luterbacher; Ø. Nordli; H. Oesterle; M. Petrakis; A. Philipp; M. J. Rodwell; O. Saladie; J. Sigro; V. Slonosky; L. Srnec; V. Swail; A. M. García-Suárez; H. Tuomenvirta; X. Wang; H. Wanner; P. Werner; D. Wheeler; E. Xoplaki

2006-06-01T23:59:59.000Z

262

Ocean Model Diagnosis of Interannual Coevolving SST Variability in the South Indian and South Atlantic Oceans  

Science Conference Proceedings (OSTI)

A global ocean model (ORCA2) forced with 50 yr of NCEP–NCAR reanalysis winds and heat fluxes has been used to investigate the evolution and forcing of interannual dipolelike sea surface temperature (SST) variability in the South Indian and South ...

J. C. Hermes; C. J. C. Reason

2005-08-01T23:59:59.000Z

263

On the changes in number and intensity of North Atlantic tropical cyclones  

E-Print Network (OSTI)

Bayesian statistical models were developed for the number of tropical cyclones and the rate at which these cyclones became hurricanes in the North Atlantic. We find that, controlling for the cold tongue index and the North Atlantic oscillation index, there is high probability that the number of cyclones has increased in the past thirty years; but the rate at which these storms become hurricanes appears to be constant. We also investigate storm intensity by measuring the distribution of individual storm lifetime in days, storm track length, and Emanuel's power dissiptation index. We find little evidence that the distribution of individual storm intensity is changing through time. Any increase in cumulative yearly storm intensity and potential destructiveness, therefore, is due to the increasing number of storms and not due to any increase in the intensity of individual storms.

Briggs, W M

2007-01-01T23:59:59.000Z

264

The Ventilation of the World's Oceans: Maps of the Potential vorticity Field  

Science Conference Proceedings (OSTI)

Maps of potential vorticity (q) within four different density layers are presented for the North and South Atlantic, North and South Pacific, and Indian Oceans. Potential vorticity is evaluated as (f/?)??0/?z, a prescription that is valid for ...

Thomas Keffer

1985-05-01T23:59:59.000Z

265

Model projections of the changes in atmospheric circulation and surface climate over North America, North Atlantic and Europe in the 21st century  

Science Conference Proceedings (OSTI)

The impacts of climate change on the North America-North Atlantic-Europe sector are studied using a coupled general circulation model (CM3) and a high-resolution atmosphere-only model (HiRAM), both developed at the Geophysical Fluid Dynamics ...

Ngar-Cheung Lau; Jeffrey J. Ploshay

266

Diagnosing the Annual Cycle of the Equatorial Undercurrent in the Atlantic Ocean from a General Circulation Model  

Science Conference Proceedings (OSTI)

Ten-year-long output series from a general circulation model forced by daily realistic winds are used to analyze the annual cycle of the Equatorial Undercurrent (EUC) in the Atlantic Ocean. Two well-defined transport maxima are found: One, ...

M. Arhan; A. M. Treguier; B. Bourlès; S. Michel

2006-08-01T23:59:59.000Z

267

A Comparison of Measured and Wind-derived Ekman Transport at 11°N in the Atlantic Ocean  

Science Conference Proceedings (OSTI)

A comparison of measured and wind-derived ageostrophic transport is presented from a zonal transect spanning the Atlantic Ocean along 11°N. The transport per unit depth shows a striking surface maximum that decays to nearly zero at a depth of ...

T. K. Chereskin; D. Roemmich

1991-06-01T23:59:59.000Z

268

Improving Latent and Sensible Heat Flux Estimates for the Atlantic Ocean (1988–99) by a Synthesis Approach  

Science Conference Proceedings (OSTI)

A new daily latent and sensible flux product developed at the Woods Hole Oceanographic Institution (WHOI) with 1° × 1° resolution for the Atlantic Ocean (65°S–65°N) for the period from 1988 to 1999 was presented. The flux product was developed by ...

Lisan Yu; Robert A. Weller; Bomin Sun

2004-01-01T23:59:59.000Z

269

Generation of Annual-Period Rossby Waves in the South Atlantic Ocean by the Wind Stress Curl  

Science Conference Proceedings (OSTI)

The properties of first-mode annual-period baroclinic Rossby waves generated by the observed wind stress curl in a numerical model of the South Atlantic and Southwest Indian oceans are presented. The forcing wind field for the area 15°–51°S, 45°W–...

Christopher J. C. Reason; Lawrence A. Mysak; Patrick F. Cummins

1987-11-01T23:59:59.000Z

270

Role of Rossby Waves in the Remote Effects of the North Indian Ocean Tropical Disturbances  

Science Conference Proceedings (OSTI)

Remote effects due to the tropical disturbances in the north Indian Ocean are investigated by analyzing long-lasting (?5 days) tropical disturbances, which reached at least the strength of tropical storms. The present analysis is carried out for ...

J. V. Ratnam; S. K. Behera; Y. Masumoto; T. Yamagata

2012-11-01T23:59:59.000Z

271

A Reanalysis of the 1911–20 Atlantic Hurricane Database  

Science Conference Proceedings (OSTI)

A reanalysis of the Atlantic basin tropical storm and hurricane database (“best track”) for the period of 1911–20 has been completed. This reassessment of the main archive for tropical cyclones of the North Atlantic Ocean, Caribbean Sea, and Gulf ...

Christopher W. Landsea; David A. Glenn; William Bredemeyer; Michael Chenoweth; Ryan Ellis; John Gamache; Lyle Hufstetler; Cary Mock; Ramon Perez; Ricardo Prieto; Jorge Sánchez-Sesma; Donna Thomas; Lenworth Woolcock

2008-05-01T23:59:59.000Z

272

The Global Conveyor Belt from a Southern Ocean Perspective  

Science Conference Proceedings (OSTI)

Recent studies have proposed the Southern Ocean as the site of large water-mass transformations; other studies propose that this basin is among the main drivers for North Atlantic Deep Water (NADW) circulation. A modeling contribution toward ...

Daniele Iudicone; Sabrina Speich; Gurvan Madec; Bruno Blanke

2008-07-01T23:59:59.000Z

273

Historical Evaluation and Future Prediction of Eastern North American and Western Atlantic Extratropical Cyclones in the CMIP5 Models during the Cool Season  

Science Conference Proceedings (OSTI)

Extratropical cyclone track density, genesis frequency, deepening rate, and maximum intensity distributions over eastern North America and the western North Atlantic were analyzed for 15 models from phase 5 of the Coupled Model Intercomparison ...

Brian A. Colle; Zhenhai Zhang; Kelly A. Lombardo; Edmund Chang; Ping Liu; Minghua Zhang

2013-09-01T23:59:59.000Z

274

Characteristics of Winter Precipitation Variation over Northern Central Eurasia and Their Connections to Sea Surface Temperatures over the Atlantic and Pacific Oceans  

Science Conference Proceedings (OSTI)

This study reveals spatial and temporal characteristics of precipitation variability and their teleconnections to sea surface temperatures (SSTs) over the Atlantic and Pacific Oceans by analyzing 68 yr of recent precipitation records over the ...

Hengchun Ye

2001-07-01T23:59:59.000Z

275

The Southern Oscillation in Surface Circulation and Climate over the Tropical Atlantic, Eastern Pacific, and Indian Oceans as Captured by Cluster Analysis  

Science Conference Proceedings (OSTI)

Clusters of sea level pressure (SLP), surface wind, cloudiness, and sea surface temperature (SST) in the domain of the tropical Atlantic, eastern Pacific, and Indian Oceans are introduced and discussed in terms of general circulation and climate. ...

Klaus Wolter

1987-04-01T23:59:59.000Z

276

Mean and Variability of the WHOI Daily Latent and Sensible Heat Fluxes at In Situ Flux Measurement Sites in the Atlantic Ocean  

Science Conference Proceedings (OSTI)

Daily latent and sensible heat fluxes for the Atlantic Ocean from 1988 to 1999 with 1° × 1° resolution have been recently developed at Woods Hole Oceanographic Institution (WHOI) by using a variational object analysis approach. The present study ...

Lisan Yu; Robert A. Weller; Bomin Sun

2004-06-01T23:59:59.000Z

277

Seasonal and Long-Term Atmospheric Responses to Reemerging North Pacific Ocean Variability: A Combined Dynamical and Statistical Assessment  

Science Conference Proceedings (OSTI)

The atmospheric response to a North Pacific subsurface oceanic temperature anomaly is studied in a coupled ocean–atmosphere general circulation model using a combined dynamical and statistical approach, with the focus on the evolution at seasonal ...

Zhengyu Liu; Yun Liu; Lixin Wu; R. Jacob

2007-03-01T23:59:59.000Z

278

Freshwater and Heat Changes in the North and South Pacific Oceans between the 1960s and 1985–94  

Science Conference Proceedings (OSTI)

Comparisons of hydrographic conditions in the North and South Pacific Oceans in the 1960s and 1985–94 have been made along five World Ocean Circulation Experiment sections. Below the seasonal mixed layer, statistically significant temporal ...

Annie P. S. Wong; Nathaniel L. Bindoff; John A. Church

2001-04-01T23:59:59.000Z

279

Effect of ocean mesoscale variability on the mean state of tropical Atlantic climate  

E-Print Network (OSTI)

J. J. Antonov, 2002: World Ocean Atlas 2001: Objectiveand variability in tropical ocean regions. Clim. Dynm. , 18,air-sea fluxes for Tropical Ocean Global Atmosphere Coupled-

Seo, H; Jochum, M; Murtugudde, R; Miller, A J

2006-01-01T23:59:59.000Z

280

The Evolution and Demise of North Brazil Current Rings  

Science Conference Proceedings (OSTI)

Subsurface float and surface drifter observations illustrate the structure, evolution, and eventual demise of 10 North Brazil Current (NBC) rings as they approached and collided with the Lesser Antilles in the western tropical Atlantic Ocean. ...

David M. Fratantoni; Philip L. Richardson

2006-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Heat Transport into the North Atlantic Ocean North of 32°N Latitude  

Science Conference Proceedings (OSTI)

Direct velocity and temperature measurements obtained on a bimonthly basis from September 1980 to May 1983 in the Gulf Stream at 73°W longitude were used in combination with historical hydrographic and current meter data across the remainder of ...

Thomas A. Rago; H. Thomas Rossby

1987-07-01T23:59:59.000Z

282

The Leading, Interdecadal Eigenmode of the Atlantic Meridional Overturning Circulation in a Realistic Ocean Model  

Science Conference Proceedings (OSTI)

Variations in the strength of the Atlantic meridional overturning circulation (AMOC) are a major potential source of decadal and longer climate variability in the Atlantic. This study analyzes continuous integrations of tangent linear and adjoint ...

Florian Sévellec; Alexey V. Fedorov

2013-04-01T23:59:59.000Z

283

A Well-Verified, Multiproxy Reconstruction of the Winter North Atlantic Oscillation Index since a.d. 1400  

Science Conference Proceedings (OSTI)

A new, well-verified, multiproxy reconstruction of the winter North Atlantic Oscillation (NAO) index is described that can be used to examine the variability of the NAO prior to twentieth century greenhouse forcing. It covers the period a.d. 1400–...

Edward R. Cook; Rosanne D. D'Arrigo; Michael E. Mann

2002-07-01T23:59:59.000Z

284

Ventilation of the Deep Western Boundary Current and Abyssal Western North Atlantic: Estimates from Tritium and 3He Distributions  

Science Conference Proceedings (OSTI)

The tritium and excess 3He data from the 1981 TTO/NAS program are used to study the time scales for the ventilation of the deep western basin by recently formed North Atlantic Deep Water (NADW). The large-scale distributions of tritium and 3He in ...

Scott C. Doney; William J. Jenkins

1994-03-01T23:59:59.000Z

285

Future Change of North Atlantic Tropical Cyclone Tracks: Projection by a 20-km-Mesh Global Atmospheric Model  

Science Conference Proceedings (OSTI)

Possible future change in tropical cyclone (TC) activity over the North Atlantic (NA) was investigated by comparison of 25-yr simulations of the present-day climate and future change under the A1B emission scenario using a 20-km-mesh ...

Hiroyuki Murakami; Bin Wang

2010-05-01T23:59:59.000Z

286

Long-Term Variability of Daily North Atlantic–European Pressure Patterns since 1850 Classified by Simulated Annealing Clustering  

Science Conference Proceedings (OSTI)

Reconstructed daily mean sea level pressure patterns of the North Atlantic–European region are classified for the period 1850 to 2003 to explore long-term changes of the atmospheric circulation and its impact on long-term temperature variability ...

A. Philipp; P. M. Della-Marta; J. Jacobeit; D. R. Fereday; P. D. Jones; A. Moberg; H. Wanner

2007-08-01T23:59:59.000Z

287

Vocalization characteristics of North Atlantic right whale surface active groups in the calving habitat, southeastern United States  

Science Conference Proceedings (OSTI)

Passive acoustic surveys were conducted to assess the vocal behavior of North Atlantic right whales (Eubalaena glacialis) in the designated critical calving habitat along the shallow coastal waters of southeastern United States. Underwater vocalizations were recorded using autonomous buoys deployed in close proximity to surface active groups (SAGs). Nine main vocalization types were identified with manual inspection of spectrograms

Vasilis Trygonis; Edmund Gerstein; Stephen McCulloch

2013-01-01T23:59:59.000Z

288

Diagnoses of an Eddy-Resolving Atlantic Ocean Model Simulation in the Vicinity of the Gulf Stream. Part I: Potential Vorticity  

Science Conference Proceedings (OSTI)

Output of an eddy-resolving model of the North Atlantic is diagnosed in the vicinity of the Gulf Stream (GS), using quasigeostrophic potential vorticity (QGPV), Ertel’s potential vorticity (PV), and particle trajectories. Time series of QGPV show ...

Mototaka Nakamura; Yi Chao

2001-02-01T23:59:59.000Z

289

Satellite Classifications of Atlantic Tropical and Subtropical Cyclones: A Review of Eight Years of Classifications at Miami  

Science Conference Proceedings (OSTI)

Estimates of the locations and maximum sustained wind speeds of all tropical and subtropical cyclones in the North Atlantic Ocean, the Caribbean Sea and the Gulf of Mexico have been made at Miami since 1971 using satellite techniques developed by ...

D. C. Gaby; J. B. Lushine; B. M. Mayfield; S. C. Pearce; F. E. Torres

1980-05-01T23:59:59.000Z

290

Compensation for the NADW Outflow in a Global Ocean General Circulation Model  

Science Conference Proceedings (OSTI)

Recent observational study on the compensation for the North Atlantic Deep Water (NADW) outflow suggested that the compensation flow loops into the south Indian Ocean, whereby the compensating water gains heat and salt before returning to the ...

Wenju Cai; Richard J. Greatbatch

1995-02-01T23:59:59.000Z

291

Can Isopycnal Mixing Control the Stability of the Thermohaline Circulation in Ocean Climate Models?  

Science Conference Proceedings (OSTI)

Convective overturning arising from static instability during winter is thought to play a crucial role in the formation of North Atlantic Deep Water (NADW). In ocean general circulation models (OGCMs), a strong reduction in convective penetration ...

Willem P. Sijp; Michael Bates; Matthew H. England

2006-11-01T23:59:59.000Z

292

Tide Gage Response to Tsunamis. Part II: Other Oceans and Smaller Seas  

Science Conference Proceedings (OSTI)

Extending previous work in the North Pacific, tsunami response was examined in the Atlantic and Indian oceans, and in three smaller seas, with the objective of exploring scale effects.

W. G. Van Dorn

1987-09-01T23:59:59.000Z

293

Effects of the Westerly Wind Stress over the Southern Ocean on the Meridional Overturning  

Science Conference Proceedings (OSTI)

Numerical experiments were conducted to clarify the processes through which the Southern Ocean wind affects the meridional overturning (NA cell) associated with North Atlantic Deep Water production. These were based on idealized single- and twin-...

Mikitoshi Hirabara; Hiroshi Ishizaki; Ichiro Ishikawa

2007-08-01T23:59:59.000Z

294

A Model of the Zonally Averaged Stratification and Overturning in the Southern Ocean  

Science Conference Proceedings (OSTI)

The ocean area south of the Antarctic Circumpolar Current (ACC) frontal system is a region of major watermass modification. Influx of North Atlantic Deep Water (NADW), small-scale mixing, eddy transport and diffusion, as well as the fluxes of ...

Dirk Olbers; Martin Visbeck

2005-07-01T23:59:59.000Z

295

Heat Exchange Between Ocean and Atmosphere in the Eastern North Pacific for 1961-71  

E-Print Network (OSTI)

Heat Exchange Between Ocean and Atmosphere in the Eastern North Pacific for 1961-71 N. E. CLARK, L of total heat exchange and departuresfroma long-term mean; 2)long-term monthly mean valuesof the total heat exchange, incom- ing solar radiation, effectiveback radiation, and evaporative and sensible heat transfer

296

Modeling of North Pacific Climate Variability Forced by Oceanic Heat Flux Anomalies  

Science Conference Proceedings (OSTI)

Potential predictability of low-frequency climate changes in the North Pacific depends on two main factors. The first is the sensitivity of the atmosphere to ocean-induced anomalies at the sea surface in midlatitudes. The second is the degree of ...

Elena Yulaeva; Niklas Schneider; David W. Pierce; Tim P. Barnett

2001-10-01T23:59:59.000Z

297

Geostrophic Circulation in the Tropical North Pacific Ocean Based on Argo Profiles  

Science Conference Proceedings (OSTI)

Absolute geostrophic currents in the North Pacific Ocean are calculated from the newly gridded Argo Profiling float data using the P-vector method for the period of 2004 through 2011. The zonal geostrophic currents based on the Argo profile data ...

Dongliang Yuan; Zhichun Zhang; Peter C. Chu; William K. Dewar

298

The Effects of North Atlantic SST and Sea Ice Anomalies on the Winter Circulation in CCM3. Part I: Main Features and Storm Track Characteristics of the Response  

Science Conference Proceedings (OSTI)

Observed multidecadal trends in extratropical atmospheric flow, such as the positive trend in the North Atlantic Oscillation (NAO) index, may be attributable to a number of causes. This study addresses the question of whether the atmospheric ...

Gudrun Magnusdottir; Clara Deser; R. Saravanan

2004-03-01T23:59:59.000Z

299

Monthly Mean Wind Stress and Sverdrup Transports in the North Atlantic: A Comparison of the Hellerman–Rosenstein and Isemer–Hasse Climatologies  

Science Conference Proceedings (OSTI)

The monthly mean wind stress climatology of Hellerman and Rosenstein (HR) is compared with the climatology of Isemer and Hasse (IH), which represents a version of the Bunker atlas (BU) for the North Atlantic based on revised parameterizations. ...

Claus W. Böning; Ralf Döscher; Hans-Jörg Isemer

1991-02-01T23:59:59.000Z

300

Meridional Transport of Eddy Sensible Heat in Winters Marked by Extremes of the North Atlantic Oscillation, 1948/49–1979/80  

Science Conference Proceedings (OSTI)

Composite patterns of eddy sensible heat transport at 700 mb on the Northern Hemisphere are derived for winters [December, January, February (DJF)] marked by extremes of the North Atlantic Oscillation (NAO) occurring in the 1948/49–1979/80 ...

Andrew M. Carleton

1988-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Life Cycle Study of a Diabatic Rossby Wave as a Precursor to Rapid Cyclogenesis in the North Atlantic—Dynamics and Forecast Performance  

Science Conference Proceedings (OSTI)

The life cycle of a North Atlantic cyclone in December 2005 that included a rapid propagation phase as a diabatic Rossby wave (DRW) is investigated by means of operational analyses and deterministic forecasts from the ECMWF. A quasigeostrophic ...

Maxi Boettcher; Heini Wernli

2011-06-01T23:59:59.000Z

302

The Effects of North Atlantic SST and Sea Ice Anomalies on the Winter Circulation in CCM3. Part II: Direct and Indirect Components of the Response  

Science Conference Proceedings (OSTI)

The wintertime atmospheric circulation responses to observed patterns of North Atlantic sea surface temperature and sea ice cover trends in recent decades are studied by means of experiments with an atmospheric general circulation model. Here the ...

Clara Deser; Gudrun Magnusdottir; R. Saravanan; Adam Phillips

2004-03-01T23:59:59.000Z

303

Implications of Both Statistical Equilibrium and Global Warming Simulations with CCSM3. Part II: On the Multidecadal Variability in the North Atlantic Basin  

Science Conference Proceedings (OSTI)

The nature of the multidecadal variability in the North Atlantic basin is investigated through detailed analysis of multicentury integrations performed using the low-resolution version of the Community Climate System Model, version 3 (CCSM3), a ...

Marc d’Orgeville; W. Richard Peltier

2009-10-01T23:59:59.000Z

304

A multi-model assessment of future projections of North Atlantic and European extratropical cyclones in the CMIP5 climate models  

Science Conference Proceedings (OSTI)

The response of North Atlantic and European extratropical cyclones to climate change is investigated in the climate models participating in CMIP5 (Fifth Coupled Model Intercomparison Project). In contrast to previous multi–model studies, a feature ...

Giuseppe Zappa; Len C. Shaffrey; Kevin I. Hodges; Phil G. Sansom; David B. Stephenson

305

Potential Impacts of the Saharan Air Layer on Numerical Model Forecasts of North Atlantic Tropical Cyclogenesis  

Science Conference Proceedings (OSTI)

Tropical cyclones have devastating impacts on countries across large parts of the globe, including the Atlantic basin. Thus, forecasting of the genesis of Atlantic tropical cyclones is important, but this problem remains a challenge for ...

Aaron S. Pratt; Jenni L. Evans

2009-04-01T23:59:59.000Z

306

On the Contrast between the Seasonal Cycles of the Equatorial Atlantic and Pacific Oceans  

Science Conference Proceedings (OSTI)

Although the winds on the equator at 28°W in the Atlantic and 140°W in the Pacific have similar seasonal variations, the current fluctuations have pronounced differences. In the Pacific the maximum speed of the Equatorial Undercurrent, attained ...

S. G. H. Philander; Yi Chao

1991-09-01T23:59:59.000Z

307

Seasonal Cycle of the Mixed Layer Heat Budget in the Northeastern Tropical Atlantic Ocean  

Science Conference Proceedings (OSTI)

The seasonal cycle of the mixed layer heat budget in the northeastern tropical Atlantic (0°–25°N, 18°–28°W) is quantified using in situ and satellite measurements together with atmospheric reanalysis products. This region is characterized by ...

Gregory R. Foltz; Claudia Schmid; Rick Lumpkin

2013-10-01T23:59:59.000Z

308

A Numerical Study of the Circulation of the Bering Sea Basin and Exchange with the North Pacific Ocean  

Science Conference Proceedings (OSTI)

A limited-area, primitive equation, three-layer hydrodynamic model, with realistic coastlines and bathymetry and ?° resolution, is used to investigate the circulation of the Bering Sea basin and the adjacent North pacific ocean. The westward ...

James E. Overland; Michael C. Spillane; Harley E. Hurlburt; Alan J. Wallcraft

1994-04-01T23:59:59.000Z

309

6+ years of acoustic thermometry in the North Pacific Ocean: A cycle of the Pacific decadal oscillation  

Science Conference Proceedings (OSTI)

Acoust. measurements of basin?averaged temperatures have been made in the North Pacific over the last 8 years. The acoustic observations give integral measurements of ocean temperature with the averaging needed to detect weak

2004-01-01T23:59:59.000Z

310

A Basinwide Estimate of Vertical Mixing in the Upper Pycnocline: Spreading of Bomb Tritium in the North Pacific Ocean  

Science Conference Proceedings (OSTI)

The vertical diffusivity KV in the upper half-kilometer of the North Pacific subtropical pycnocline is estimated from observations of the spreading rate of anthropogenic tritium. The calculation is based on approximately 300 ocean tritium ...

Dan E. Kelley; Kim A. Van Scoy

1999-08-01T23:59:59.000Z

311

Some Large-Scale Characteristics Associated with Tropical Cyclone Development in the North Indian Ocean during FGGE  

Science Conference Proceedings (OSTI)

This paper discusses the meteorological conditions associated with tropical cyclone formation in the north Indian Ocean during the 1979 FGGE year. Seven developing systems are composited together using FUGE Ill-b analyses to show the common ...

Cheng-Shang Lee; Roger Edson; William M. Gray

1989-02-01T23:59:59.000Z

312

The Climatology of Cyclones and Anticyclones over North America and Surrounding Ocean Environs for January and July, 1950–77  

Science Conference Proceedings (OSTI)

The climatology. of cyclones and anticyclones is studied using a 2° latitude/longitude grid spanning North America and surrounding ocean environs for January and July 1950–77. In addition to determining total area statistics, areas distributions ...

K. M. Zishka; P. J. Smith

1980-04-01T23:59:59.000Z

313

A Joint Statistical and Dynamical Assessment of Atmospheric Response to North Pacific Oceanic Variability in CCSM3  

Science Conference Proceedings (OSTI)

Atmospheric response to North Pacific oceanic variability is assessed in Community Climate System Model, version 3 (CCSM3) using two statistical methods and one dynamical method. All methods identify an equivalent barotropic low response to a ...

Yafang Zhong; Zhengyu Liu

2008-11-01T23:59:59.000Z

314

A Description of COADS Surface Meteorological Fields and the Implied Sverdrup Transports for the Atlantic Ocean from 30°S to 60°N  

Science Conference Proceedings (OSTI)

Using COADS data spanning 1947–1988, we describe the regional nature of the Atlantic Ocean wind-driven circulation between 30°8 and 60°N and its annual and interannual variability. The Sverdrup streamfunction defines the circulation gyres. Our ...

Dennis A. Mayer; Robert H. Weisberg

1993-10-01T23:59:59.000Z

315

Nitrogen fixation and nitrogenase (nifH) expression in tropical waters of the eastern north atlantic.  

SciTech Connect

Expression of nifH in 28 surface water samples collected during fall 2007 from six stations in the vicinity of the Cape Verde Islands (north-east Atlantic) was examined using reverse transcription-polymerase chain reaction (RT-PCR)-based clone libraries and quantitative RT-PCR (RT-qPCR) analysis of seven diazotrophic phylotypes. Biological nitrogen fixation (BNF) rates and nutrient concentrations were determined for these stations, which were selected based on a range in surface chlorophyll concentrations to target a gradient of primary productivity. BNF rates greater than 6 nmolN I{sup -1} h{sup -1} were measured at two of the near-shore stations where high concentrations of Fe and PO{sub 4}{sup 3-} were also measured. Six hundred and five nifH transcripts were amplified by RT-PCR, of which 76% are described by six operational taxonomic units, including Trichodesmium and the uncultivated UCYN-A, and four non-cyanobacterial diazotrophs that clustered with uncultivated Proteobacteria. Although all five cyanobacterial phylotypes quantified in RT-qPCR assays were detected at different stations in this study, UCYN-A contributed most significantly to the pool of nifH transcripts in both coastal and oligotrophic waters. A comparison of results from RT-PCR clone libraries and RT-qPCR indicated that a {gamma}-proteobacterial phylotype was preferentially amplified in clone libraries, which underscores the need to use caution interpreting clone-library-based nifH studies, especially when considering the importance of uncultivated proteobacterial diazotrophs.

Turk, K. A.; Rees, A. P.; Zehr, J. P.; Pereira, N.; Swift, P.; Shelley, R.; Lohan, M.; Woodward, E. M. S.; Gilbert, J. (CLS-CI); (Department of Ocean Sciences, University of California Santa Cruz); (Plymouth Marine Laboratory, Prospect Place); (NERC Centre for Ecology and Hydrology); (University of Plymouth, Drake Circus); (Department of Ecology and Evolution, University of Chicago)

2011-01-01T23:59:59.000Z

316

A REVISED CONCEPTUAL MODEL OF THE TROPICAL MARINE BOUNDARY LAYER. PART I: STATISTICAL CHARACTERIZATION OF THE VARIABILITY INHERENT IN THE WINTERTIME TRADE WIND REGIME OVER THE WESTERN TROPICAL ATLANTIC  

Science Conference Proceedings (OSTI)

This paper investigates wintertime tropical marine boundary layer (TMBL) statistical characteristics over the western North Atlantic using the complete set of island-launched soundings from the Rain in Cumulus over the Ocean (RICO) Experiment. The ...

Jennifer L. Davison; Robert M. Rauber; Larry Di Girolamo; Margaret A. LeMone

317

A Revised Conceptual Model of the Tropical Marine Boundary Layer. Part I: Statistical Characterization of the Variability Inherent in the Wintertime Trade Wind Regime over the Western Tropical Atlantic  

Science Conference Proceedings (OSTI)

This paper investigates wintertime tropical marine boundary layer (TMBL) statistical characteristics over the western North Atlantic using the complete set of island-launched soundings from the Rain in Cumulus over the Ocean (RICO) experiment. The ...

Jennifer L. Davison; Robert M. Rauber; Larry Di Girolamo; Margaret A. LeMone

2013-10-01T23:59:59.000Z

318

The Meridional Oceanic Transports of Heat and Nutrients in the South Atlantic  

Science Conference Proceedings (OSTI)

Meridional transports of mass, heat, nutrients, and carbon across coast-to-coast WOCE and pre-WOCE sections between 11°S and 45°S in the South Atlantic are calculated using an inverse model. Usually salt preservation is used as a condition in the ...

Jürgen Holfort; Gerold Siedler

2001-01-01T23:59:59.000Z

319

Transequatorial Flow of Antarctic Bottom Water in the Western Atlantic Ocean: Abyssal Geostrophy at the Equator  

Science Conference Proceedings (OSTI)

In its general northward flow along the western trough of the Atlantic, Antarctic Bottom Water (AABW) must pass over several sills separating the various abyssal basins. At the equator, the western trough is deformed by major east-west offsets of ...

M. S. McCartney; R. A. Curry

1993-06-01T23:59:59.000Z

320

Diagnosing Natural Variability of North Atlantic Water Masses in HadCM3  

Science Conference Proceedings (OSTI)

A study of thermally driven water mass transformations over 100 yr in the ocean component of the Third Hadley Centre Coupled Ocean–Atmosphere General Circulation Model (HadCM3) is presented. The processes of surface-forced transformations, ...

Keith Haines; Chris Old

2005-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

The Subinertial Momentum Balance of the North Atlantic Subtropical Convergence Zone  

Science Conference Proceedings (OSTI)

The upper-ocean to forcing by pressure gradients and wind stress is examined using observations from the Frontal Air–Sea Interaction Experiment. A moored way acquired time series of winds. upper-ocean currents, temperatures, and salinities ...

Craig M. Lee; Charles C. Eriksen

1996-09-01T23:59:59.000Z

322

North Pacific Mesoscale Coupled Air-Ocean Simulations Compared with Observations  

SciTech Connect

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

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

2013-04-11T23:59:59.000Z

323

Application of Oceanic Heat Content Estimation to Operational Forecasting of Recent Atlantic Category 5 Hurricanes  

Science Conference Proceedings (OSTI)

Research investigating the importance of the subsurface ocean structure on tropical cyclone intensity change has been ongoing for several decades. While the emergence of altimetry-derived sea height observations from satellites dates back to the ...

Michelle Mainelli; Mark DeMaria; Lynn K. Shay; Gustavo Goni

2008-02-01T23:59:59.000Z

324

Helium and lead isotope geochemistry of oceanic volcanic rocks from the East Pacific and South Atlantic  

E-Print Network (OSTI)

The isotopic evolution of helium and lead in the Earth is coupled by virtue of their common radioactive parents uranium and thorium. The isotopic signatures in oceanic volcanic rocks provide constraints on the temporal ...

Graham, David W. (David William)

1987-01-01T23:59:59.000Z

325

An Adjoint Ocean Model Using Finite Elements: An Application to the South Atlantic  

Science Conference Proceedings (OSTI)

A new inverse model to study the large-scale ocean circulation and its associated heat and freshwater budget is developed. The model relies on traditional assumptions of mass, heat, and salt conservation. A three-dimensional velocity field that ...

Uwe Dobrindt; Jens Schröter

2003-03-01T23:59:59.000Z

326

Observed local and remote influences of vegetation on the atmosphere across North America using a model-validated statistical technique that first excludes oceanic forcings  

Science Conference Proceedings (OSTI)

The observed local and non-local influences of vegetation on the atmosphere across North America are quantified after first removing the ocean’s impact. The interaction between vegetation and the atmosphere is dominated by forcing from the ...

Fuyao Wang; Michael Notaro; Zhengyu Liu; Guangshan Chen

327

Variations in North American Summer Precipitation Driven by the Atlantic Multidecadal Oscillation  

Science Conference Proceedings (OSTI)

Understanding the development and variation of the atmospheric circulation regimes driven by the Atlantic multidecadal oscillation (AMO) is essential because these circulations interact with other forcings on decadal and interannual time scales. ...

Qi Hu; Song Feng; Robert J. Oglesby

2011-11-01T23:59:59.000Z

328

Assessing the Skill of Operational Atlantic Seasonal Tropical Cyclone Forecasts  

Science Conference Proceedings (OSTI)

Since 1984, W. Gray of Colorado State University and a team of researchers have been issuing seasonal tropical cyclone forecasts for the North Atlantic Ocean. Prior to this, little work had been done in the area of long-term tropical cyclone ...

Brian F. Owens; Christopher W. Landsea

2003-02-01T23:59:59.000Z

329

Abrupt climate change in the Atlantic Ocean during the last 20,000 years : insights from multi-element analysis of benthic and planktic foraminifera and coupled OA-GCM  

E-Print Network (OSTI)

Minor and trace element records of planktic and benthic foraminifera from Atlantic sediment cores, as well as output from a coupled OAGCM, were used to investigate the magnitude and distribution of the oceanic response to ...

Came, Rosemarie Evangeline

2005-01-01T23:59:59.000Z

330

Relative Contributions of the Indian Ocean and Local SST Anomalies to the Maintenance of the Western North Pacific Anomalous Anticyclone during the El Niño Decaying Summer  

Science Conference Proceedings (OSTI)

To investigate the relative role of the cold SST anomaly (SSTA) in the western North Pacific (WNP) or Indian Ocean basin mode (IOBM) in maintaining an anomalous anticyclone over the western North Pacific (WNPAC) during the El Niño decaying summer,...

Bo Wu; Tim Li; Tianjun Zhou

2010-06-01T23:59:59.000Z

331

Atlantic Hurricane Season of 1984  

Science Conference Proceedings (OSTI)

A summary of the 1984 Atlantic hurricane season is given. Twelve tropical cyclones and one subtropical cyclone were tracked in the North Atlantic–Caribbean–Gulf of Mexico region. Diana was a landfalling hurricane on the North Carolina coast and ...

Miles B. Lawrence; Gilbert B. Clark

1985-07-01T23:59:59.000Z

332

An Example of North Atlantic Deep-Ocean Swell Impacting Ascension and St. Helena Islands in the Central South Atlantic  

Science Conference Proceedings (OSTI)

During 1999, the dataloggers of the pressure transducer–based tide gauges at Ascension and St. Helena Islands were upgraded in order to enable the monitoring of wave conditions in addition to the measurement of still water levels. Within a few ...

J. M. Vassie; P. L. Woodworth; M. W. Holt

2004-07-01T23:59:59.000Z

333

NOAA/WEST COAST AND ALASKA TSUNAMI WARNING CENTER ATLANTIC OCEAN RESPONSE CRITERIA  

E-Print Network (OSTI)

ocean conveyor belt Puerto Rico Dry Season Puerto Rico Wet Season Calentamiento Global en Puerto Rico climatologist, Jim Hansen) · Real cost of Nuclear energy ­ versus cost of clean energy like solar or windWh) Factura de AEE: Agua #12;9 Puerto Rico Dry Season Puerto Rico Wet Season Global Warming in Puerto Rico

ten Brink, Uri S.

334

Winter convection transports Atlantic Water heat to the surface layer in the eastern Arctic Ocean.  

Science Conference Proceedings (OSTI)

A one year (2009–2010) record of temperature and salinity profiles from Ice Tethered Profiler (ITP) buoys in the Eurasian Basin (EB) of the Arctic Ocean is used to quantify the flux of heat from the upper pycnocline to the surface mixed layer. The ...

Igor V. Polyakov; Andrey V. Pnyushkov; Robert Rember; Laurie Padman; Eddy C. Carmack; Jennifer M. Jackson

335

Winter Convection Transports Atlantic Water Heat to the Surface Layer in the Eastern Arctic Ocean  

Science Conference Proceedings (OSTI)

A 1-yr (2009/10) record of temperature and salinity profiles from Ice-Tethered Profiler (ITP) buoys in the Eurasian Basin (EB) of the Arctic Ocean is used to quantify the flux of heat from the upper pycnocline to the surface mixed layer. The upper ...

Igor V. Polyakov; Andrey V. Pnyushkov; Robert Rember; Laurie Padman; Eddy C. Carmack; Jennifer M. Jackson

2013-10-01T23:59:59.000Z

336

Acoustic shadow-zone arrivals at long range in the North Pacific Ocean  

E-Print Network (OSTI)

range in the ocean References . . . . . . . . . . . . . . .III Effects of upper ocean processes on at 500- and 1000-kmJune through November from the World Ocean Atlas Database (

Van Uffelen, Lora J.

2009-01-01T23:59:59.000Z

337

North Central","West North Central","South Atlantic","East South Central","West South Central","Mountain","Pacific"  

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

2007" 2007" "Table A3. Census Region and Division, Number of Buildings for All Buildings (Including Malls), 2003" ,"Number of Buildings (thousand)" ,"All Buildings","Northeast",,"Midwest",,"South",,,"West" ,,"New England","Middle Atlantic","East North Central","West North Central","South Atlantic","East South Central","West South Central","Mountain","Pacific" "All Buildings ................",4859,252,509,728,577,926,360,587,316,603 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",2586,134,240,372,356,474,217,294,166,333 "5,001 to 10,000 ..............",948,49,106,128,100,200,59,127,62,117

338

Climatology and Interannual Variability in the Intensity of Synoptic-Scale Processes in the North Atlantic from the NCEP–NCAR Reanalysis Data  

Science Conference Proceedings (OSTI)

North Atlantic synoptic-scale processes are analyzed by bandpassing 6-hourly NCEP–NCAR reanalysis data (1958–98) for several synoptic ranges corresponding to ultrahigh-frequency variability (0.5–2 days), synoptic-scale variability (2–6 days), ...

Sergey K. Gulev; Thomas Jung; Eberhard Ruprecht

2002-04-01T23:59:59.000Z

339

Atlantic NAD 83 SLA Baseline Points | Data.gov  

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

SLA Baseline Points Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov Communities Ocean Data Atlantic NAD 83 SLA Baseline...

340

Atlantic NAD 83 OCS Planning Areas | Data.gov  

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

OCS Planning Areas Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov Communities Ocean Data Atlantic NAD 83 OCS Planning...

Note: This page contains sample records for the topic "north atlantic ocean" 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

Atlantic NAD83 Submerged Lands Act Boundary | Data.gov  

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

NAD83 Submerged Lands Act Boundary Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov Communities Ocean Data Atlantic...

342

Atlantic NAD 83 OCS Blocks | Data.gov  

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

OCS Blocks Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov Communities Ocean Data Atlantic NAD 83 OCS Blocks Dataset...

343

Atlantic NAD 83 Continental Shelf Boundary (CSB) | Data.gov  

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

Continental Shelf Boundary (CSB) Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov Communities Ocean Data Atlantic NAD 83...

344

Atlantic NAD 83 SLA Baseline Tangents | Data.gov  

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

SLA Baseline Tangents Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov Communities Ocean Data Atlantic NAD 83 SLA...

345

Decadal Changes in Water Mass Characteristics at 24°N in the Subtropical North Atlantic Ocean  

Science Conference Proceedings (OSTI)

Three transatlantic hydrographic sections across 24°N through the center of the subtropical gyre are analyzed for evidence of decadal changes in water mass characteristics. In the main thermocline, there has been a steady increase in salinity ...

Harry L. Bryden; Michael J. Griffiths; Alicia M. Lavin; Robert C. Millard; Gregorio Parrilla; William M. Smethie

1996-12-01T23:59:59.000Z

346

Large-Scale Vertical and Horizontal Circulation in the North Atlantic Ocean  

Science Conference Proceedings (OSTI)

Observations of large-scale hydrography, air–sea forcing, and regional circulation from numerous studies are combined by inverse methods to determine the basin-scale circulation, average diapycnal mixing, and adjustments to air–sea forcing of the ...

Rick Lumpkin; Kevin Speer

2003-09-01T23:59:59.000Z

347

Faunal biogeography, community structure, and genetic connectivity of North Atlantic seamounts  

E-Print Network (OSTI)

The mechanisms of faunal dispersal across ocean basins are key unknowns toward understanding of the modern biogeography and biodiversity of deep-sea fauna. Seamounts are considered to play a defining role in faunal evolution, ...

Cho, Walter W

2008-01-01T23:59:59.000Z

348

The Atmospheric Circulation over the North Atlantic as Induced by the SST Field  

Science Conference Proceedings (OSTI)

Spectral analyses of the sea surface temperature (SST) in the Simple Ocean Data Analysis (SODA) reanalysis for the past half-century identify prominent and statistically significant interannual oscillations in two regions along the Gulf Stream ...

Yizhak Feliks; Michael Ghil; Andrew W. Robertson

2011-01-01T23:59:59.000Z

349

Seasonal to Decadal Prediction of Southern African Climate and Its Links with Variability of the Atlantic Ocean  

Science Conference Proceedings (OSTI)

A review of the interannual to interdecadal variability of the southern African region and its links with the Atlantic is given. Emphasis is placed on modes such as the Benguela Niño that develop within the Atlantic and may have some ...

C. J. C. Reason; W. Landman; W. Tennant

2006-07-01T23:59:59.000Z

350

Variation of the North American Summer Monsoon Regimes and the Atlantic Multidecadal Oscillation  

Science Conference Proceedings (OSTI)

The North American summer monsoon holds the key to understanding warm season rainfall variations in the region from northern Mexico to the Southwest and the central United States. Studies of the monsoon have pictured mosaic submonsoonal regions ...

Qi Hu; Song Feng

2008-06-01T23:59:59.000Z

351

Summer rainfall and wheat grain quality: Relationships with the North Atlantic Oscillation  

E-Print Network (OSTI)

import of North American wheat prohibitively expensive for milling into the majority of bread flour to inform the wheat industry about the quality of raw mate- rial available for milling and baking. Thus

Stephenson, David B.

352

The Atlantic Climate Change Program  

Science Conference Proceedings (OSTI)

The Atlantic Climate Change Program (ACCP) is a component of NOAA's Climate and Global Change Program. ACCP is directed at determining the role of the thermohaline circulation of the Atlantic Ocean on global atmospheric climate. Efforts and ...

Robert L. Molinari; David Battisti; Kirk Bryan; John Walsh

1994-07-01T23:59:59.000Z

353

Public works for water and power development and energy research appropriations for fiscal year 1978. Part 2. Corps of Engineers: Chief of Engineers and Director of Civil Works; New England Division; North Atlantic Division; North Pacific Division; Ohio River Division; South Atlantic Division. Hearins before a Committee on Appropriations, United States Senate, Ninety-Fifth Congress, H. R. 7553  

SciTech Connect

The Subcommittee of the Committee on Appropriations met on February 25, 1977, to consider the budget requests of the Army Corps of Engineers for the South Atlantic Division and the Ohio River Division and the Ohio River Division. On February 28, 1977, New England and North Atlantic Divisions presented statements. On March 2, 1977, statements were heard from representatives of the North Pacific Division. On March 8, 1977, extensive statements on the overall operation of the Corps of Engineers were given by Lt. Gen. J.W. Morris, Chief of Engineers and Maj. Gen. Ernest Graves, Director of Civil Works. (MCW)

1977-01-01T23:59:59.000Z

354

Finescale Structure of the T–S Relation in the Eastern North Atlantic  

Science Conference Proceedings (OSTI)

Distributions of temperature (T) and salinity (S) and their relationship in the oceans are the result of a balance between T–S variability generated at the surface by air–sea fluxes and its removal by molecular dissipation. In this paper the role ...

R. Ferrari; K. L. Polzin

2005-08-01T23:59:59.000Z

355

High-Resolution Satellite Surface Latent Heat Fluxes in North Atlantic Hurricanes  

Science Conference Proceedings (OSTI)

This study presents a new high-resolution satellite-derived ocean surface flux product, XSeaFlux, which is evaluated for its potential use in hurricane studies. The XSeaFlux employs new satellite datasets using improved retrieval methods, and uses ...

Jiping Liu; Judith A. Curry; Carol Anne Clayson; Mark A. Bourassa

2011-09-01T23:59:59.000Z

356

Circulation and Deep-Water Export at the Western Exit of the Subpolar North Atlantic  

Science Conference Proceedings (OSTI)

The current system east of the Grand Banks was intensely observed by World Ocean Circulation Experiment (WOCE) array ACM-6 during 1993–95 with eight moorings, reaching about 500 km out from the shelf edge and covering the water column from about ...

Friedrich A. Schott; Rainer Zantopp; Lothar Stramma; Marcus Dengler; Jürgen Fischer; Mathieu Wibaux

2004-04-01T23:59:59.000Z

357

Impact of Labrador Sea Convection on the North Atlantic Meridional Overturning Circulation  

Science Conference Proceedings (OSTI)

The overturning and horizontal circulations of the Labrador Sea are deduced from a composite vertical section across the basin. The data come from the late-spring/early-summer occupations of the World Ocean Circulation Experiment (WOCE) AR7W line,...

Robert S. Pickart; Michael A. Spall

2007-09-01T23:59:59.000Z

358

1138 JOURNAL OF CLIMATE VOLUME 24 Observational Evidence for Oceanic Controls on Hurricane Intensity  

E-Print Network (OSTI)

The influence of oceanic changes on tropical cyclone activity is investigated using observational estimates of sea surface temperature (SST), air–sea fluxes, and ocean subsurface thermal structure during the period 1998– 2007. SST conditions are examined before, during, and after the passage of tropical cyclones, through Lagrangian composites along cyclone tracks across all ocean basins, with particular focus on the North Atlantic. The influence of translation speed is explored by separating tropical cyclones according to the translation

Ian D. Lloyd; Gabriel A. Vecchi

2010-01-01T23:59:59.000Z

359

Tomographic Maps of the Ocean Mesoscale. Part 1: Pure Acoustics  

Science Conference Proceedings (OSTI)

A field test of ocean acoustic tomography was conducted in 1981 for a two month period in a 300 km square at 26°N, 70°W in the North Atlantic (just south of the MODE region). Nine acoustic deep-sea moorings with sea floor transponders for ...

B. Cornuelle; C. Wunsch; D. Behringer; T. Birdsall; M. Brown; R. Heinmiller; R. Knox; K. Metzger; W. Munk; J. Spiesberger; R. Spindel; D. Webb; P. Worcester

1985-02-01T23:59:59.000Z

360

Interannual Variability in the Thermodynamics of Subduction over the North Atlantic  

Science Conference Proceedings (OSTI)

Subduction requires a buoyancy input into the mixed layer, which over the gyre scale can either be achieved by an atmospheric input or a wind-induced Ekman redistribution of buoyancy. The buoyancy budget for subduction is diagnosed over the North ...

Alison J. McLaren; Richard G. Williams

2001-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

The Dynamics of the ENSO–Atlantic Hurricane Teleconnection: ENSO-Related Changes to the North African–Asian Jet Affect Atlantic Basin Tropical Cyclogenesis  

Science Conference Proceedings (OSTI)

The nature of the teleconnection linking ENSO variability with Atlantic basin tropical storm formation is investigated. Solutions of the linearized barotropic vorticity equation forced with August–October El Niño event divergence produce upper-...

Jeffrey Shaman; Steven K. Esbensen; Eric D. Maloney

2009-05-01T23:59:59.000Z

362

Clouds, Aerosols and Precipitation in the Marine Boundary Layer (CAP-MBL) AMF Deployment Graciosa Island, Azores, NE Atlantic Ocean May 2009-December 2010  

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

the Marine Boundary Layer (CAP-MBL) Graciosa Island, Azores, NE Atlantic Ocean May 2009-December 2010 Rob Wood, University of Washington CAP-MBL Proposal Team AMF Deployment Team Thanks to Mark Miller: AMF Site Scientist Kim Nitschke: AMF Site Manager Importance of Low-Clouds for Climate Imperative that we understand the processes controlling the formation, maintenance and dissipation of low clouds in order to improve their representation in climate models. Which clouds matter for climate sensitivity? Climate Feedbacks Model Intercomparison Project (CFMIP) 12 slab ocean models 2xCO 2 - control Correlation of global mean CRF with local values Mark Webb, Hadley Center 90 N 45 N 0 45 S 90S 0 90 E 180 90 W 0

363

Ecological evaluation of proposed dredged material from Wilmington Harbor and Military Ocean Terminal, Sunny Point, North Carolina  

SciTech Connect

This report is intended to provide information required to address potential ecological effects of the proposed disposal of Wilmington Harbor and Military Ocean Terminal, Sunny Point (MOTSU), North Carolina, sediments in the ocean. The report is divided into five sections. Section 1.0 is the introduction containing a brief overview of the study and the study objectives. Section 2.0 describes the methods and materials used for sample collection, processing, toxicological and bioaccumulation testing, physical/chemical analysis of sediments and tissues, data analysis, and quality assurance procedures. Section 3.0 presents the results of field collections, sediment chemistry, toxicological testing, and tissue chemistry resulting from bioaccumulation exposures. Section 4.0 presents a discussion of the results and summary conclusions concerning the acceptability of the Wilmington Harbor and MOTSU dredged material for ocean disposal. Section 5.0 lists the literature cited in support of this document. A series of appendixes contain detailed data listings.

Ward, J.A.; Pinza, M.R.; Barrows, M.E.; Word, J.Q. [Battelle/Marine Sciences Lab., Sequim, WA (US)

1993-07-01T23:59:59.000Z

364

North Central","West North Central","South Atlantic","East South Central","West South Central","Mountain","Pacific"  

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

A4. Census Region and Division, Floorspace for All Buildings (Including Malls), 2003" A4. Census Region and Division, Floorspace for All Buildings (Including Malls), 2003" ,"Total Floorspace (million square feet)" ,"All Buildings","Northeast",,"Midwest",,"South",,,"West" ,,"New England","Middle Atlantic","East North Central","West North Central","South Atlantic","East South Central","West South Central","Mountain","Pacific" "All Buildings ................",71658,3452,10543,12424,5680,13999,3719,9022,4207,8613 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6922,383,676,986,922,1283,547,788,466,871 "5,001 to 10,000 ..............",7033,369,800,939,738,1468,420,957,465,878

365

Seasonal Variation of Baroclinic Geostrophic Heat Transport: Is It Resolved by Existing Climatologies of the Atlantic Ocean?  

Science Conference Proceedings (OSTI)

Seasonal cycles of baroclinic geostrophic heat transport are systematically computed between 30°S and 40°N in the Atlantic from several hydrographic climatologies. The intercomparison of the cycles reveals very significant differences in both ...

S. Wacongne; L. Crosnier

2002-01-01T23:59:59.000Z

366

Relationships between Precipitation Anomalies in Uruguay and Southern Brazil and Sea Surface Temperature in the Pacific and Atlantic Oceans  

Science Conference Proceedings (OSTI)

This study focuses on precipitation in Uruguay and the Brazilian state of Rio Grande do Sul, which extend along the Atlantic coast of southern South America. The present paper has two principal goals: 1) to describe the annual cycle of ...

Alvaro F. Diaz; Caarem D. Studzinski; Carlos R. Mechoso

1998-02-01T23:59:59.000Z

367

Vertical Structure of the Seasonal Cycle in the Central Equatorial Atlantic Ocean: XBT Sections from 1980 to 1988  

Science Conference Proceedings (OSTI)

A set of temperature profiles from expendable bathythermographs collected from 1980 to April 1988 along two ship routes transecting the equatorial Atlantic from 11°N to 11°S is analyzed to inter the vertical structure of the annual variability of ...

G. Reverdin; P. Rual; Y. Du Penhoat; Y. Gouriou

1991-02-01T23:59:59.000Z

368

The South Atlantic Current  

Science Conference Proceedings (OSTI)

In this paper we use the historical hydrographic data base for the South Atlantic Ocean to investigate (i) the hydrographic boundary between the subtropical gyre and the Antarctic Circumpolar Current (ACC), the Sub-tropical Front (STF), and (ii) ...

Lothar Stramma; Ray G. Peterson

1990-06-01T23:59:59.000Z

369

EOS, TRANSACTIONS, AMERICAN GEOPHYSICAL UNION Counting Atlantic Tropical  

E-Print Network (OSTI)

Climate variability and any resulting change in the characteristics of tropical cyclones (tropical storms, subtropical storms, and hurricanes) have become topics of great interest and research within the past 2 years [International Workshop on Tropical Cyclones, 2006]. An emerging focus is how the frequency of tropical cyclones has changed over time and whether any changes could be linked to anthropogenic global warming. The Atlantic is the one tropical cyclone basin that has quantitative records back to the midnineteenth century for the whole basin (i.e., North Atlantic Ocean, Caribbean Sea, and Gulf of Mexico) [Jarvinen et al., 1984; Landsea et al.,

Cyclones Back To

2007-01-01T23:59:59.000Z

370

Neutralizing Carbonic Acid in Deep Carbonate Strata below the North Atlantic  

DOE Green Energy (OSTI)

Carbon dioxide injection into deep sea sediments below 2700 m water depth and a few hundred meters to fifteen hundred meters deep in the sediment column may provide permanent geologic storage by gravitational trapping. At high pressures and low temperatures common in deep sea sediments a few hundred meters below sea floor, CO{sub 2} will be in its liquid phase and will be denser than the overlying pore fluid. The lower density of the pore fluid provides a cap to the denser CO{sub 2} and ensures gravitational trapping in the short term. The overall storage capacity for CO{sub 2} in such deep sea formations below the ocean floor is primarily determined by the permeability, and will vary with seafloor depth, geothermal gradient, porosity, and pore water salinity. Furthermore, the dissemination of the injected CO{sub 2} in the sediments and potential chemical reactions between CO{sub 2}, pore fluid and sediments will define its fate in the storage reservoir. The main objectives of our research was to evaluate the potential for sub-seabed CO{sub 2} storage in deep sea sediments using a range of approaches including experiments, permeability analysis, and modeling. Over the course of the three-year award, our results support an important role for sub-seabed storage in a diverse portfolio of carbons sequestration options. Our analysis has shown the feasibility of this type of storage, and also emphasizes that escape or leakage from such sites would be negligible. The most difficult challenge is to overcome the low permeability of typical deep-sea sediments, and a variety of approaches are suggested for future research.

Klaus Lackner; Charles Harvey; Bruce Watson

2008-01-14T23:59:59.000Z

371

Interannual and Decadal Changes in Equatorial Wind Stress in the Atlantic, Indian, and Pacific Oceans and the Eastern Ocean Coastal Response  

Science Conference Proceedings (OSTI)

Recently, Clarke and Lebedev showed that ?, the low-frequency eastward equatorial wind stress zonally averaged along the equator, can, in the case of the Pacific Ocean winds, be linearly estimated by ?p, the surface atmospheric pressure ...

Allan J. Clarke; Anna Lebedev

1997-07-01T23:59:59.000Z

372

Trends of Atlantic Wave Extremes as Simulated in a 40-Yr Wave Hindcast Using Kinematically Reanalyzed Wind Fields  

Science Conference Proceedings (OSTI)

In this study, seasonal extremes of wave height in the North Atlantic are analyzed. The analysis is based on a 40-yr (1958–97) numerical wave hindcast using an intensive kinematic reanalysis of wind fields. Changes in the ocean wave extremes are ...

Xiaolan L. Wang; Val R. Swail

2002-05-01T23:59:59.000Z

373

Free and Forced Variability of the Tropical Atlantic Ocean: Role of the Wind–Evaporation–Sea Surface Temperature Feedback  

Science Conference Proceedings (OSTI)

The role of the wind–evaporation–sea surface temperature (WES) feedback in the low-frequency natural variability of the tropical Atlantic is studied using an atmospheric global climate model—the NCAR Community Climate Model, version 3 (CCM3)—...

Salil Mahajan; R. Saravanan; Ping Chang

2010-11-01T23:59:59.000Z

374

The Atlantic Stratocumulus Transition Experiment—ASTEX  

Science Conference Proceedings (OSTI)

The Atlantic Stratocumulus Experiment (ASTEX) was conducted over the northeast Atlantic Ocean during June 1992 with substantial international collaboration. The main goal of ASTEX was to study the climatologically important transition between ...

Bruce A. Albrecht; Christopher S. Bretherton; Doug Johnson; Wayne H. Scubert; A. Shelby Frisch

1995-06-01T23:59:59.000Z

375

Topographic Sensitivity Studies with a Bryan–Cox-Type Ocean Model  

Science Conference Proceedings (OSTI)

This paper describes a series of four experiments, each run for 10 years at 1° × 1° resolution on a North Atlantic domain, designed to illuminate the sensitivity of a Bryan–Cox-type ocean model to changes in the representation of the ridges that ...

M. J. Roberts; R. A. Wood

1997-05-01T23:59:59.000Z

376

New Altimetric Estimates of Mode-1 M2 Internal Tides in the Central North Pacific Ocean  

Science Conference Proceedings (OSTI)

New estimates of mode-1 M2 internal tide energy flux are computed from an extended Ocean Topography Experiment (TOPEX)/Poseidon (T/P) altimeter dataset that includes both the original and tandem tracks, improving spatial resolution over previous ...

Zhongxiang Zhao; Matthew H. Alford

2009-07-01T23:59:59.000Z

377

VERTIGO (VERtical Transport In the Global Ocean): A study of particle sources and flux attenuation in the North Pacific  

E-Print Network (OSTI)

organic carbon fluxes in the ocean based on the quantitativetraps for estimating upper ocean particle fluxes. Journal ofZ. , 2004. Southern Ocean Iron Enrichment Experiment (

Buesseler, K.O.

2008-01-01T23:59:59.000Z

378

- NORTH ATLANTIC TREATY ORGANIZATION  

E-Print Network (OSTI)

According to its Charter, the mission of AGARD is to bring together the leading personalities of the NATO nations in the

Volume I (french

1997-01-01T23:59:59.000Z

379

North Brazil Current Ring Generation and Evolution Observed with SeaWiFS  

Science Conference Proceedings (OSTI)

The earth's largest oceanic rings are formed by the retroflecting North Brazil Current (NBC) near 8°N in the western tropical Atlantic. The NBC flows northward across the equator and past the mouth of the Amazon River entraining river-influenced ...

David M. Fratantoni; Deborah A. Glickson

2002-03-01T23:59:59.000Z

380

Role of Low Clouds in Summertime Atmosphere–Ocean Interactions over the North Pacific  

Science Conference Proceedings (OSTI)

The summer-to-summer variability of the areal extent of marine stratiform cloudiness (MSC; stratus, stratocumulus, and fog) over the North Pacific is examined for the period of record 1952–92 using a dataset based on surface observations. ...

Joel R. Norris; Yuan Zhang; John M. Wallace

1998-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Radiometric Validation of ERS-1 Along-Track Scanning Radiometer Average Sea Surface Temperature in the Atlantic Ocean  

Science Conference Proceedings (OSTI)

The ERS-1 along-track scanning radiometer (ATSR) provides a half-degree latitude by half-degree longitude average sea surface temperature (ASST) measurement representative of the thermal skin layer of the ocean that is intended for use in global ...

Craig J. Donlon; Ian S. Robinson

1998-06-01T23:59:59.000Z

382

Water Mass Export from Drake Passage to the Atlantic, Indian, and Pacific Oceans: A Lagrangian Model Analysis  

Science Conference Proceedings (OSTI)

The northward export of intermediate water from Drake Passage is investigated in two global ocean general circulation models (GCMs) by means of quantitative particle tracing diagnostics. This study shows that a total of about 23 Sv (Sv ? 106 m3?s?...

Yann Friocourt; Sybren Drijfhout; Bruno Blanke; Sabrina Speich

2005-07-01T23:59:59.000Z

383

References Cited in “Ocean, Reflections on a Century of Exploration” (University of California Press, 2009)  

E-Print Network (OSTI)

Borgese, E.M. (editor) 1992, Ocean Frontiers. Explorationsradiocarbon in the Atlantic Ocean. J. Geophys. Res. 65 (a),1961, Geochemistry and physics of ocean circulation. In: M.

Berger, W H

2011-01-01T23:59:59.000Z

384

Evolution of the Arctic Ocean Salinity, 2007–08: Contrast between the Canadian and the Eurasian Basins  

Science Conference Proceedings (OSTI)

The authors investigate the variability of salinity in the Arctic Ocean and in the Nordic and Labrador Seas over recent years to see how the freshwater balance in the Arctic and the exchanges with the North Atlantic have been affected by the ...

Camille Lique; Gilles Garric; Anne-Marie Treguier; Bernard Barnier; Nicolas Ferry; Charles-Emmanuel Testut; Fanny Girard-Ardhuin

2011-03-01T23:59:59.000Z

385

Atlantic Dominance of the Meridional Overturning Circulation  

Science Conference Proceedings (OSTI)

North Atlantic (NA) deep-water formation and the resulting Atlantic meridional overturning cell is generally regarded as the primary feature of the global overturning circulation and is believed to be a result of the geometry of the continents. ...

A. M. de Boer; J. R. Toggweiler; D. M. Sigman

2008-02-01T23:59:59.000Z

386

Interannual Variability of the Kuroshio Frontal Structure along Its Western Boundary in the North Pacific Ocean Associated with the 1982 ENSO Event  

Science Conference Proceedings (OSTI)

The vertically averaged temperature (Tav) over the upper 200 m of ocean in the western boundary of the North Pacific is used to detect changes in the strength and path of the Kuroshio Front along the western boundary from Luzon (18°N) to Honshu (...

Youhai He; Warren B. White

1987-09-01T23:59:59.000Z

387

Salinity-driven Thermocline Transients in a Wind- and Thermohaline-forced Isopycnic Coordinate Model of the North Atlantic  

Science Conference Proceedings (OSTI)

An isopycnic-coordinate oceanic circulation model formulated with the aim of simulating thermodynamically and mechanically driven flow in realistic basins is presented. Special emphasis is placed on the handling of diabatic surface processes and ...

Rainer Bleck; Claes Rooth; Dingming Hu; Linda T. Smith

1992-12-01T23:59:59.000Z

388

Links between Tropical Cyclone Activity and Madden–Julian Oscillation Phase in the North Atlantic and Northeast Pacific Basins  

Science Conference Proceedings (OSTI)

The leading intraseasonal mode of atmospheric and oceanic variability, the Madden–Julian oscillation (MJO), influences tropical and extratropical sea level pressure, temperature, divergent and rotational wind components, moisture, and deep ...

Bradford S. Barrett; Lance M. Leslie

2009-02-01T23:59:59.000Z

389

Dynamical forecast experiments with a baroclinic quasigeostrophic open ocean model  

Science Conference Proceedings (OSTI)

We report here on a series of numerical forecast experiments using a baroclinic quasigeostropic open ocean model. A simulation has been carried out to produce a model data set consisting of values of streamfunction and potential vorticity in four dimensions. This data set exhibits quasiturbulent characteristics similar to those of the mesoscale eddy field in the North Western Atlantic. The simulation has been carried out for several model years over many independent synoptic realizations.

Robert N. Miller; Allan R. Robinson

1984-01-01T23:59:59.000Z

390

Arctic ocean long-term acoustic monitoring : ambient noise, environmental correlates, and transients north of Barrow, Alaska  

E-Print Network (OSTI)

Ambient Noise in the Arctic Ocean,” J. Acoust. Soc. Am. Vol.for sound speed in the oceans,” J. Acoust. Soc. Am. Vol. 70,Pritchard, R. S. , “Arctic Ocean Background Noise Caused by

Roth, Ethan H.

2008-01-01T23:59:59.000Z

391

El Nino north - Nino effects in the eastern subarctic Pacific ocean  

SciTech Connect

This book represents the proceedings of a meeting on El Nino effects in the eastern subarctic Pacific, held on 12-13 September 1984 at the Pacific Marine Environmental Laboratory, Seattle, Washington. The papers of the first day focused on the physical environment; the second day was devoted to examining the biological response. These papers show how an El Nino event such as that of 1982-1983 can perturb the ocean and its biota far from the equator and provide some insight into the research required if the environmental effects and their biological consequences are to be successfully predicted.

Wooster, W.S.; Fluharty, D.L. (eds.)

1985-01-01T23:59:59.000Z

392

Explosive East Coast Cyclogenesis over the West-Central North Atlantic Ocean: A Composite Study Derived from ECMWF Operational Analyses  

Science Conference Proceedings (OSTI)

This paper describes the observational aspects of explosive East Coast cyclogenesis using composites constructed from the daily global analyses generated and archived by the European Center for Medium Range Weather Forecasts (ECMWF). An ...

John Manobianco

1989-11-01T23:59:59.000Z

393

Observations of the Boundary Current System at 26.5°N in the Subtropical North Atlantic Ocean  

Science Conference Proceedings (OSTI)

Five current meter moorings and four horizontal electric field records spanning June 1990–February 1992 are used to describe the mean structure and variability of the vertically averaged velocity field and volume transport extending 425 km east ...

Alan D. Chave; Douglas S. Luther; Jean H. Filloux

1997-09-01T23:59:59.000Z

394

A Multidisciplinary Investigation of the Intermediate Depths of the Atlantic Ocean: AAIW delta^13C Variability During the Younger Dryas and Lithoherms in the Straits of Florida  

E-Print Network (OSTI)

A transect of cores ranging from 798 m to 1585 m water depth in the South Atlantic Ocean document the relative intermediate water mass nutrient geometry and stable isotopic variability of AAIW during the Younger Dryas cooling event. The data reveal concurrent delta^13 C and delta^18 O excursions of 0.59 ppt and 0.37 ppt within the core of Antarctic Intermediate Water (AAIW) centered at 11,381 calendar years before present based on radiometric age control. A portion of the delta^1 3C variability (0.22 ppt) can be explained by a shift in thermodynamic equilibrium concurrent with a drop in temperature of 1.8°C at the locus of AAIW formation. The remaining 0.37 ppt increase in delta^13 C most likely resulted from increased wind velocities, and a greater coupling between the ocean and the atmosphere at the locus of AAIW formation (increased efficiency of the thermodynamic process). Deepwater coral mounds are aggregates of corals, other organisms, their skeletal remains, and sediments that occur on the seafloor of the world’s oceans. In the Straits of Florida, these features have been referred to as lithoherms. We use digital, side-scan sonar data collected from the submarine NR-1 from an 10.9 km^2 area at ~650 m water depth to characterize quantitatively aspects of the morphology of 216. Their lengths, widths, heights, areas, orientations and concentration on the seafloor have been determined. Analysis indicates that the outlines of relatively small to medium sized lithoherms can be effectively described with a piriform function. This shape is less applicable to the largest lithoherms because they are aggregates of smaller lithoherms. Nearly all of the lithoherms studied have axes parallel to the northward flowing Florida Current, and the heads of 80 percent of these features face into the current. The shape and orientation of the lithoherms, and evidence of megaripples and scouring in the sonar data suggest that these features are formed by a unidirectional current. Following an extensive investigation of over 200 lithoherms via side-scan sonar imagery and direct observation, we have developed a qualitative model for the formation of the lithoherm type of deep-water coral mounds in the Straits of Florida. Lithoherm formation can be characterized by four main stages of development: nucleating, juvenile, mature singular, and fused. Fused lithoherms can form via transverse and/or longitudinal accretion, however, transverse accretion at the head of the mound is likely the most efficient mechanism. A comparison of lithoherm spatial relationship to local bathymetry agrees with previous observations of deep-water coral mound formations along the levied margins of density flow scour channels.

Brookshire, Brian

2010-12-01T23:59:59.000Z

395

VERTIGO (VERtical Transport In the Global Ocean): A study of particle sources and flux attenuation in the North Pacific  

E-Print Network (OSTI)

Research II, this volume. Volk, T. , Hoffert, M.I. , 1985.the ocean’s “biological pump” (Volk and Hoffert, 1985). This

Buesseler, K.O.

2008-01-01T23:59:59.000Z

396

Low-Frequency Variability in Shallow-Water Models of the Wind-Driven Ocean Circulation. Part II: Time-Dependent Solutions  

Science Conference Proceedings (OSTI)

The time-dependent wind-driven ocean circulation is investigated for both a rectangular and a North Atlantic–shaped basin. Multiple steady states in a 2½-layer shallow-water model and their dependence on various parameters and other model ...

Eric Simonnet; Michael Ghil; Kayo Ide; Roger Temam; Shouhong Wang

2003-04-01T23:59:59.000Z

397

A Parallel Ocean Model With Adaptive Mesh Refinement Capability For Global Ocean Prediction  

DOE Green Energy (OSTI)

An ocean model with adaptive mesh refinement (AMR) capability is presented for simulating ocean circulation on decade time scales. The model closely resembles the LLNL ocean general circulation model with some components incorporated from other well known ocean models when appropriate. Spatial components are discretized using finite differences on a staggered grid where tracer and pressure variables are defined at cell centers and velocities at cell vertices (B-grid). Horizontal motion is modeled explicitly with leapfrog and Euler forward-backward time integration, and vertical motion is modeled semi-implicitly. New AMR strategies are presented for horizontal refinement on a B-grid, leapfrog time integration, and time integration of coupled systems with unequal time steps. These AMR capabilities are added to the LLNL software package SAMRAI (Structured Adaptive Mesh Refinement Application Infrastructure) and validated with standard benchmark tests. The ocean model is built on top of the amended SAMRAI library. The resulting model has the capability to dynamically increase resolution in localized areas of the domain. Limited basin tests are conducted using various refinement criteria and produce convergence trends in the model solution as refinement is increased. Carbon sequestration simulations are performed on decade time scales in domains the size of the North Atlantic and the global ocean. A suggestion is given for refinement criteria in such simulations. AMR predicts maximum pH changes and increases in CO{sub 2} concentration near the injection sites that are virtually unattainable with a uniform high resolution due to extremely long run times. Fine scale details near the injection sites are achieved by AMR with shorter run times than the finest uniform resolution tested despite the need for enhanced parallel performance. The North Atlantic simulations show a reduction in passive tracer errors when AMR is applied instead of a uniform coarse resolution. No dramatic or persistent signs of error growth in the passive tracer outgassing or the ocean circulation are observed to result from AMR.

Herrnstein, A

2005-09-08T23:59:59.000Z

398

Have Aerosols Caused the Observed Atlantic Multidecadal Variability?  

E-Print Network (OSTI)

Identifying the prime drivers of the twentieth-century multidecadal variability in the Atlantic Ocean is crucial for predicting how the Atlantic will evolve in the coming decades and the resulting broad impacts on weather ...

Zhang, Rong

399

Have Aerosols Caused the Observed Atlantic Multidecadal Variability?  

Science Conference Proceedings (OSTI)

Identifying the prime drivers of the twentieth-century multidecadal variability in the Atlantic Ocean is crucial for predicting how the Atlantic will evolve in the coming decades and the resulting broad impacts on weather and precipitation ...

Rong Zhang; Thomas L. Delworth; Rowan Sutton; Daniel L. R. Hodson; Keith W. Dixon; Isaac M. Held; Yochanan Kushnir; John Marshall; Yi Ming; Rym Msadek; Jon Robson; Anthony J. Rosati; MingFang Ting; Gabriel A. Vecchi

2013-04-01T23:59:59.000Z

400

Impact of Interbasin Exchange on the Atlantic Overturning Circulation  

Science Conference Proceedings (OSTI)

The thermohaline exchange between the Atlantic and the Southern Ocean is analyzed, using a dataset based on WOCE hydrographic data. It is shown that the salt and heat transports brought about by the South Atlantic subtropical gyre play an ...

Wilbert Weijer; Wilhelmus P. M. de Ruijter; Henk A. Dijkstra; Peter Jan van Leeuwen

1999-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Atlantic Hurricane Season of 1987  

Science Conference Proceedings (OSTI)

The general overview of the 1987 hurricane season in the North Atlantic is presented together with detailed accounts of all named storms. In addition, an unnamed tropical storm and a tropical depression that required watches and/or warnings on ...

Robert A. Case; Harold P. Gerrish

1988-04-01T23:59:59.000Z

402

Upper-Ocean Thermal Structure and the Western North Pacific Category 5 Typhoons. Part II: Dependence on Translation Speed  

Science Conference Proceedings (OSTI)

Using new in situ ocean subsurface observations from the Argo floats, best-track typhoon data from the U.S. Joint Typhoon Warning Center, an ocean mixed layer model, and other supporting datasets, this work systematically explores the ...

I-I. Lin; Iam-Fei Pun; Chun-Chieh Wu

2009-11-01T23:59:59.000Z

403

The ENSO Teleconnection to the Tropical Atlantic Ocean: Contributions of the Remote and Local SSTs to Rainfall Variability in the Tropical Americas  

Science Conference Proceedings (OSTI)

Recent developments in Tropical Atlantic Variability (TAV) identify the El Niño–Southern Oscillation (ENSO) as one of the leading factors in the interannual climate variability of the basin. An ENSO event results in Tropic-wide anomalies in the ...

Alessandra Giannini; John C. H. Chiang; Mark A. Cane; Yochanan Kushnir; Richard Seager

2001-12-01T23:59:59.000Z

404

Atlantic Hurricanes in the Second Half of the Nineteenth Century  

Science Conference Proceedings (OSTI)

A historical revision of Atlantic tropical cyclones for the period 1851–90 is presented. This work was undertaken with the aim of improving knowledge of the tropical storms and hurricanes in the North Atlantic basin, which occurred during the ...

José Fernández-Partagás; Henry F. Diaz

1996-12-01T23:59:59.000Z

405

A Tropical Cyclone Genesis Parameter for the Tropical Atlantic  

Science Conference Proceedings (OSTI)

A parameter to evaluate the potential for tropical cyclone formation (genesis) in the North Atlantic between Africa and the Caribbean islands is developed. Climatologically, this region is the source of about 40% of the Atlantic basin tropical ...

Mark DeMaria; John A. Knaff; Bernadette H. Connell

2001-04-01T23:59:59.000Z

406

Tropical Atlantic Biases in CCSM4  

Science Conference Proceedings (OSTI)

This paper focuses on diagnosing biases in the seasonal climate of the tropical Atlantic in the twentieth-century simulation of the Community Climate System Model, version 4 (CCSM4). The biases appear in both atmospheric and oceanic components. ...

Semyon A. Grodsky; James A. Carton; Sumant Nigam; Yuko M. Okumura

2012-06-01T23:59:59.000Z

407

On the Nature and Causes of Large-Scale Thermal Variability in the Central North Pacific Ocean  

Science Conference Proceedings (OSTI)

Long-range Naval aircraft using AXBT's obtained meridional temperature sections from the central Pacific Ocean along 158 and 170°W between 30 and 50°N at approximately monthly intervals between November 1974 and April 1977 (29 months). Analyses ...

T. P. Barnett

1981-07-01T23:59:59.000Z

408

Western South Atlantic holocene and glacial deepwater hydrography derived from benthic foraminiferal Cd/Ca and stable carbon isotope data  

E-Print Network (OSTI)

Today, deep waters produced in the North Atlantic are exported through the western South Atlantic. Antarctic intermediate water (AAIW) also enters the Atlantic in this region. Circumpolar deep water (CDW) fills the depths ...

Horowitz, Michael (Michael Joshua), 1962-

1999-01-01T23:59:59.000Z

409

Variability at Intermediate Depths at the Equator in the Atlantic Ocean in 2000–06: Annual Cycle, Equatorial Deep Jets, and Intraseasonal Meridional Velocity Fluctuations  

Science Conference Proceedings (OSTI)

Time series of high vertical resolution current meter measurements between 600-m and 1800-m depths on the equator in the Atlantic were obtained at two locations, 10° and 23°W. The measurements have a time span of almost 7 years (2000–06) and ...

Lucia Bunge; Christine Provost; Bach Lien Hua; Annie Kartavtseff

2008-08-01T23:59:59.000Z

410

Data-Based Meridional Overturning Streamfunctions for the Global Ocean  

Science Conference Proceedings (OSTI)

The meridional overturning circulation for the Atlantic, Pacific, and Indian Oceans is computed from absolute geostrophic velocity estimates based on hydrographic data and from climatological Ekman transports. The Atlantic overturn includes the ...

Lynne D. Talley; Joseph L. Reid; Paul E. Robbins

2003-10-01T23:59:59.000Z

411

Oceanic Trace Gases Numeric Data Packages from the Carbon Dioxide Information Analysis Center (CDIAC)  

DOE Data Explorer (OSTI)

CDIAC products include numeric data packages, publications, trend data, atlases, models, etc. and can be searched for by subject area, keywords, authors, product numbers, time periods, collection sites, spatial references, etc. Most data sets or packages, many with numerous data files, are free to download from CDIAC's ftp area. CDIAC lists the following numeric data packages under the broad heading of Oceanic Trace Gases: Carbon Dioxide, Hydrographic, and Chemical Data Obtained during the R/V Ronald H. Brown Repeat Hydrography Cruise in the Atlantic Ocean: CLIVAR CO2 Section A16S_2005 ( 01/11/05 - 022405) • Determination of Carbon Dioxide, Hydrographic, and Chemical Parameters during the R/V Nathaniel B. Palmer Cruise in the Southern Indian Ocean (WOCE Section S04I, 050396 - 070496) • Inorganic Carbon, Nutrient, and Oxygen Data from the R/V Ronald H. Brown Repeat Hydrography Cruise in the Atlantic Ocean: CLIVAR CO2 Section A16N_2003a (060403 – 081103) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Maurice Ewing Cruise in the Atlantic Ocean (WOCE Section A17, 010494 - 032194) • Global Ocean Data Analysis Project GLODAP: Results and Data • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Knorr Cruises in the North Atlantic Ocean on WOCE Sections AR24 (1102 – 120596) and A24, A20, and A22 (053097 – 090397) • Carbon Dioxide, Hydrographic and Chemical Data Obtained During the Nine R/V Knorr Cruises Comprising the Indian Ocean CO2 Survey (WOCE Sections I8SI9S, I9N, I8NI5E, I3, I5WI4, I7N, I1, I10, and I2; 120 194 – 012296) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Meteor Cruise 28/1 in the South Atlantic Ocean (WOCE Section A8, 032994 - 051294) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Knorr Cruise 138-3, -4, and -5 in the South Pacific Ocean (WOCE Sections P6E, P6C, and P6W, 050292 - 073092) • Global Distribution of Total Inorganic Carbon and Total Alkalinity below the deepest winter mixed layer depths • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V John V. Vickers Cruise in the Pacific Ocean (WOCE Section P13, NOAA CGC92 Cruise, 080492 – 102192) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Hesperides Cruise in the Atlantic Ocean (WOCE Section A5, 071492 - 081592) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Thomas G. Thompson Cruise in the Pacific Ocean (WOCE Section P10, 100593 – 111093) • The International Intercomparison Exercise of Underway fCO2 Systems during the R/V Meteor Cruise 36/1 in the North Atlantic Ocean • Carbon Dioxide, Hydrographic, and Chemical Data Obtained during the R/V Meteor Cruise 22/5 in the South Atlantic Ocean (WOCE Section A10, Dec. 1992-Jan, 1993) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained in the South Pacific Ocean (WOCE Sections P16A/P17A, P17E/P19S, and P19C, R/V Knorr , Oct. 1992-April 1993) • Surface Water and Atmospheric Underway Carbon Data Obtained During the World Ocean Circulation Experiment Indian Ocean Survey Cruises (R/V Knorr, Dec. 1994 – Jan, 1996) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Akademik Ioffe Cruise in the South Pacific Ocean (WOCE Section S4P, Feb.-April 1992) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Thomas Washington Cruise TUNES-1 in the Equatorial Pacific Ocean (WOCE section P17C) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Thomas Washington Cruise TUNES-3 in the Equatorial Pacific Ocean (WOCE section P16C) • Carbon-14 Measurements in Surface Water CO2 from the Atlantic, Indian and Pacific Oceans, 1965-1994 • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During R/V Meteor Cruise 18/1 in the North Atlantic Ocean (WOCE Section A1E) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained in the Central South Pacific Ocean (WOCE Sections P17S and P16S) during the TUNES-2 Expedition of the R

412

Barotropic and Baroclinic Tides in the Central North Pacific Ocean Determined from Long-Range Reciprocal Acoustic Transmissions  

Science Conference Proceedings (OSTI)

Travel times of reciprocal 1000-km range acoustic transmissions, determined from the 1987 Reciprocal Tomography Experiment, are used to study barotropic tidal currents and a large-scale, coherent baroclinic tide in the central North Pacific ...

Brian D. Dushaw; Bruce M. Howe; Bruce D. Cornuelle; Peter F. Worcester; Douglas S. Luther

1995-04-01T23:59:59.000Z

413

Ocean Frontal Effects on the Vertical Development of Clouds over the Western North Pacific: In Situ and Satellite Observations  

Science Conference Proceedings (OSTI)

A suite of shipboard and satellite observations are analyzed and synthesized to investigate the three-dimensional structure of clouds and influences from sea surface temperature fronts over the western North Pacific. Sharp transitions are ...

Hiroki Tokinaga; Youichi Tanimoto; Shang-Ping Xie; Takeaki Sampe; Hiroyuki Tomita; Hiroshi Ichikawa

2009-08-01T23:59:59.000Z

414

Ocean | Data.gov  

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

Ocean Ocean Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean Welcome to our COMMUNITY This is the National Ocean Council's portal for data, information, and decision tools to support people engaged in regional marine planning for the future use of the ocean, our coasts, and the Great Lakes. Our goal is to enhance discovery of and access to data and information for planners, stakeholders, and the public. Please visit our Feedback page to tell us what would make the site most useful to you as we expand our content. Start Here! Previous Pause Next PacIOOS - Pacific Islands Voyager PacIOOS - Pacific Islands Voyager View More West Coast Governors Alliance - Regional Data Framework West Coast Governors Alliance - Regional Data Framework View More Mid-Atlantic Ocean Data Portal

415

South Atlantic Variability Arising from Air–Sea Coupling: Local Mechanisms and Tropical–Subtropical Interactions  

Science Conference Proceedings (OSTI)

Interannual variability in the southern and equatorial Atlantic is investigated using an atmospheric general circulation model (AGCM) coupled to a slab ocean model (SOM) in the Atlantic in order to isolate features of air–sea interactions ...

Sylwia Trzaska; Andrew W. Robertson; John D. Farrara; Carlos R. Mechoso

2007-07-01T23:59:59.000Z

416

Atlantic Bluefin Tuna (Thunnus thynnus) Population Dynamics  

E-Print Network (OSTI)

Atlantic Bluefin Tuna (Thunnus thynnus) Population Dynamics Delineated by Organochlorine Tracers R bluefin tuna (ABFT) are highly valued and heavily exploited, and critical uncertainties regarding. Hereweshowthatorganochlorinepesticidesandpolychlorinated biphenyls (PCBs) can be used as tracers of bluefin tuna foraging grounds in the North Atlantic

Hilton, Eric J.

417

Mid-Atlantic Wind - Overcoming the Challenges  

SciTech Connect

This study, supported by the US Department of Energy, Wind Powering America Program, Maryland Department of Natural Resources and Chesapeake Bay Foundation, analyzed barriers to wind energy development in the Mid-Atlantic region along with options for overcoming or mitigating them. The Mid-Atlantic States including Delaware, Maryland, North Carolina and Virginia, have excellent wind energy potential and growing demand for electricity, but only two utility-scale projects have been installed to date. Reasons for this apathetic development of wind resources were analyzed and quantified for four markets. Specific applications are: 1) Appalachian mountain ridgeline sites, 2) on coastal plains and peninsulas, 3) at shallow water sites in Delaware and Chesapeake Bays, Albemarle and Pamlico Sounds, and 4) at deeper water sites off the Atlantic coast. Each market has distinctly different opportunities and barriers. The primary barriers to wind development described in this report can be grouped into four categories; state policy and regulatory issues, wind resource technical uncertainty, economic viability, and public interest in environmental issues. The properties of these typologies are not mutually independent and do interact. The report concluded that there are no insurmountable barriers to land-based wind energy projects and they could be economically viable today. Likewise potential sites in sheltered shallow waters in regional bay and sounds have been largely overlooked but could be viable currently. Offshore ocean-based applications face higher costs and technical and wind resource uncertainties. The ongoing research and development program, revision of state incentive policies, additional wind measurement efforts, transmission system expansion, environmental baseline studies and outreach to private developers and stakeholders are needed to reduce barriers to wind energy development.

Daniel F. Ancona III; Kathryn E. George; Richard P. Bowers; Dr. Lynn Sparling; Bruce Buckheit; Daniel LoBue

2012-05-31T23:59:59.000Z

418

Mid-Atlantic Wind - Overcoming the Challenges  

SciTech Connect

This study, supported by the US Department of Energy, Wind Powering America Program, Maryland Department of Natural Resources and Chesapeake Bay Foundation, analyzed barriers to wind energy development in the Mid-Atlantic region along with options for overcoming or mitigating them. The Mid-Atlantic States including Delaware, Maryland, North Carolina and Virginia, have excellent wind energy potential and growing demand for electricity, but only two utility-scale projects have been installed to date. Reasons for this apathetic development of wind resources were analyzed and quantified for four markets. Specific applications are: 1) Appalachian mountain ridgeline sites, 2) on coastal plains and peninsulas, 3) at shallow water sites in Delaware and Chesapeake Bays, Albemarle and Pamlico Sounds, and 4) at deeper water sites off the Atlantic coast. Each market has distinctly different opportunities and barriers. The primary barriers to wind development described in this report can be grouped into four categories; state policy and regulatory issues, wind resource technical uncertainty, economic viability, and public interest in environmental issues. The properties of these typologies are not mutually independent and do interact. The report concluded that there are no insurmountable barriers to land-based wind energy projects and they could be economically viable today. Likewise potential sites in sheltered shallow waters in regional bay and sounds have been largely overlooked but could be viable currently. Offshore ocean-based applications face higher costs and technical and wind resource uncertainties. The ongoing research and development program, revision of state incentive policies, additional wind measurement efforts, transmission system expansion, environmental baseline studies and outreach to private developers and stakeholders are needed to reduce barriers to wind energy development.

Daniel F. Ancona III; Kathryn E. George; Lynn Sparling; Bruce C. Buckheit; Daniel LoBue; and Richard P. Bowers

2012-06-29T23:59:59.000Z

419

Marine Fisheries On the cover: Atlantic salmon  

E-Print Network (OSTI)

on Cod, North Sea Oil-Fish Reports, and Wave Power for Boats? 27 NMFS Scientific Reports, Managing Whales, PRC Fisheries, Marine Safety, Aquatic Plants, Atlantic Squid Areas and Trawl Hangs, Eel Culture

420

Atlantic Subtropical Storms. Part II: Climatology  

Science Conference Proceedings (OSTI)

A 45-yr climatology of subtropical cyclones (ST) for the North Atlantic is presented and analyzed. The STs pose a warm-season forecasting problem for subtropical locations such as Bermuda and the southern United States because of the potentially ...

Mark P. Guishard; Jenni L. Evans; Robert E. Hart

2009-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Numerical performance prediction for FAU's first generation ocean current turbine.  

E-Print Network (OSTI)

??This thesis presents the analytically predicted position, motion, attitude, power output and forces on Florida Atlantic University's (FAU) first generation ocean current turbine for a… (more)

Vanrietvelde, Nicolas.

2009-01-01T23:59:59.000Z

422

Numerical performance prediction for FAU's first generation ocean current turbine.  

E-Print Network (OSTI)

?? This thesis presents the analytically predicted position, motion, attitude, power output and forces on Florida Atlantic University's (FAU) first generation ocean current turbine for… (more)

Vanrietvelde, Nicolas

2010-01-01T23:59:59.000Z

423

Review of science issues, deployment strategy, and status for the ARM north slope of Alaska-Adjacent Arctic Ocean climate research site  

SciTech Connect

Recent climate modeling results point to the Arctic as a region that is particularly sensitive to global climate change. The Arctic warming predicted by the models to result from the expected doubling of atmospheric carbon dioxide is two to three times the predicted mean global warming, and considerably greater than the warming predicted for the Antarctic. The North Slope of Alaska-Adjacent Arctic Ocean (NSA-AAO) Cloud and Radiation Testbed (CART) site of the Atmospheric Radiation Measurement (ARM) Program is designed to collect data on temperature-ice-albedo and water vapor-cloud-radiation feedbacks, which are believed to be important to the predicted enhanced warming in the Arctic. The most important scientific issues of Arctic, as well as global, significance to be addressed at the NSA-AAO CART site are discussed, and a brief overview of the current approach toward, and status of, site development is provided. ARM radiometric and remote sensing instrumentation is already deployed and taking data in the perennial Arctic ice pack as part of the SHEBA (Surface Heat Budget of the Arctic ocean) experiment. In parallel with ARM`s participation in SHEBA, the NSA-AAO facility near Barrow was formally dedicated on 1 July 1997 and began routine data collection early in 1998. This schedule permits the US Department of Energy`s ARM Program, NASA`s Arctic Cloud program, and the SHEBA program (funded primarily by the National Science Foundation and the Office of Naval Research) to be mutually supportive. In addition, location of the NSA-AAO Barrow facility on National Oceanic and Atmospheric Administration land immediately adjacent to its Climate Monitoring and Diagnostic Laboratory Barrow Observatory includes NOAA in this major interagency Arctic collaboration.

Stamnes, K. [Univ. of Alaska, Fairbanks, AK (United States). Geophysical Inst.; Ellingson, R.G. [Univ. of Maryland, College Park, MD (United States). Dept. of Meteorology; Curry, J.A. [Univ. of Colorado, Boulder, CO (United States). Dept. of Aerospace and Engineering Sciences; Walsh, J.E. [Univ. of Illinois, Urbana, IL (United States). Dept. of Atmospheric Sciences; Zak, B.D. [Sandia National Labs., Albuquerque, NM (United States)

1999-01-01T23:59:59.000Z

424

Improved global bathymetry, global sea floor roughness, and deep ocean mixing  

E-Print Network (OSTI)

General Bathymetric Chart of the Oceans (GEBCO) Hom. http://Chart of the Arctic Ocean (IBCAO). http://www.ngdc.noaa.gov/in the South Atlantic ocean, Tectonophysics, 210, 235-253.

Becker, Joseph Jeffrey

2008-01-01T23:59:59.000Z

425

Improved Global Bathymetry, Global Sea Floor Roughness, and Deep Ocean Mixing  

E-Print Network (OSTI)

General Bathymetric Chart of the Oceans (GEBCO) Hom. http://Chart of the Arctic Ocean (IBCAO). http://www.ngdc.noaa.gov/in the South Atlantic ocean, Tectonophysics, 210, 235-253.

Becker, Joseph J

2008-01-01T23:59:59.000Z

426

A Coupled Hydrodynamic–Bottom Boundary Layer Model of Storm and Tidal Flow in the Middle Atlantic Bight of North America  

Science Conference Proceedings (OSTI)

The effects of increased friction and tides on circulation in the Middle Atlantic Bight (MAB) during the SWADE storm of 25–28 October 1990 have been investigated using a three-dimensional hydrodynamic model coupled to a bottom boundary layer ...

Timothy R. Keen; Scott M. Glenn

1995-03-01T23:59:59.000Z

427

Transport of Freshwater by the Oceans  

Science Conference Proceedings (OSTI)

The global distribution of freshwater transport in the ocean is presented, based on an integration point at Bering Strait, which connects the Pacific and Atlantic oceans via the Artic Ocean. Through Bering Strait, 0.8 × 106 m3 s?1 of relatively ...

Susan E. Wijffels; Raymond W. Schmitt; Harry L. Bryden; Anders Stigebrandt

1992-02-01T23:59:59.000Z

428

The Golden Gate Textile Barrier: Preserving California Bay of San Francisco from a Rising North Pacific Ocean  

E-Print Network (OSTI)

Climate change in California may require construction of a barrier separating the Pacific Ocean from San Francisco Bay and the Sacramento River-San Joaquin River Delta simply because Southern California is remarkably dependent on freshwater exported from the Delta. We offer a new kind of salt barrier, a macroproject built of impermeable textile materials stretched across the Golden Gate beneath the famous bridge. We anticipate it might eventually substitute for a recently proposed San Francisco In-Stream Tidal Power Plant harnessing a 1.7 m tide at the Bay entrance if future climate conditions Statewide is conducive. First-glance physics underpin our macroproject.

Richart B. Cathcart; Alexander A. Bolonkin

2007-02-04T23:59:59.000Z

429

Links between Rossby Wave Breaking and the North Atlantic Oscillation–Arctic Oscillation in Present-Day and Last Glacial Maximum Climate Simulations  

Science Conference Proceedings (OSTI)

Upper-tropospheric Rossby wave–breaking processes are examined in coupled ocean–atmosphere simulations of the Last Glacial Maximum (LGM) and of the modern era. LGM statistics of the Northern Hemisphere in winter, computed from the Paleoclimate ...

Gwendal Rivière; Alexandre Laîné; Guillaume Lapeyre; David Salas-Mélia; Masa Kageyama

2010-06-01T23:59:59.000Z

430

Basinwide Integrated Volume Transports in an Eddy-Filled Ocean  

Science Conference Proceedings (OSTI)

The temporal evolution of the strength of the Atlantic Meridional Overturning Circulation (AMOC) in the subtropical North Atlantic is affected by both remotely forced, basin-scale meridionally coherent, climate-relevant transport anomalies, such ...

T. Kanzow; H. L. Johnson; D. P. Marshall; S. A. Cunningham; J. J.-M. Hirschi; A. Mujahid; H. L. Bryden; W. E. Johns

2009-12-01T23:59:59.000Z

431

Effect of Atlantic Meridional Overturning Circulation on Tropical Atlantic Variability: A Regional Coupled Model Study  

Science Conference Proceedings (OSTI)

A simplified coupled ocean–atmosphere model, where an atmospheric general circulation model (AGCM) is fully coupled to a 2½-layer reduced-gravity ocean model (RGO) over the tropical Atlantic basin, is presented in the context of studying the role ...

Caihong Wen; Ping Chang; Ramalingam Saravanan

2011-07-01T23:59:59.000Z

432

VERTIGO (VERtical Transport In the Global Ocean): A study of particle sources and flux attenuation in the North Pacific  

SciTech Connect

The VERtical Transport In the Global Ocean (VERTIGO) study examined particle sources and fluxes through the ocean's 'twilight zone' (defined here as depths below the euphotic zone to 1000 m). Interdisciplinary process studies were conducted at contrasting sites off Hawaii (ALOHA) and in the NW Pacific (K2) during 3 week occupations in 2004 and 2005, respectively. We examine in this overview paper the contrasting physical, chemical and biological settings and how these conditions impact the source characteristics of the sinking material and the transport efficiency through the twilight zone. A major finding in VERTIGO is the considerably lower transfer efficiency (T{sub eff}) of particulate organic carbon (POC), POC flux 500/150 m, at ALOHA (20%) vs. K2 (50%). This efficiency is higher in the diatom-dominated setting at K2 where silica-rich particles dominate the flux at the end of a diatom bloom, and where zooplankton and their pellets are larger. At K2, the drawdown of macronutrients is used to assess export and suggests that shallow remineralization above our 150 m trap is significant, especially for N relative to Si. We explore here also surface export ratios (POC flux/primary production) and possible reasons why this ratio is higher at K2, especially during the first trap deployment. When we compare the 500 m fluxes to deep moored traps, both sites lose about half of the sinking POC by >4000 m, but this comparison is limited in that fluxes at depth may have both a local and distant component. Certainly, the greatest difference in particle flux attenuation is in the mesopelagic, and we highlight other VERTIGO papers that provide a more detailed examination of the particle sources, flux and processes that attenuate the flux of sinking particles. Ultimately, we contend that at least three types of processes need to be considered: heterotrophic degradation of sinking particles, zooplankton migration and surface feeding, and lateral sources of suspended and sinking materials. We have evidence that all of these processes impacted the net attenuation of particle flux vs. depth measured in VERTIGO and would therefore need to be considered and quantified in order to understand the magnitude and efficiency of the ocean's biological pump.

Buesseler, K.O.; Trull, T.W.; Steinberg, D.K.; Silver, M.W.; Siegel, D.A.; Saitoh, S.-I.; Lamborg, C.H.; Lam, P.J.; Karl, D.M.; Jiao, N.Z.; Honda, M.C.; Elskens, M.; Dehairs, F.; Brown, S.L.; Boyd, P.W.; Bishop, J.K.B.; Bidigare, R.R.

2008-06-10T23:59:59.000Z

433

North American tropical cyclone landfall and SST: a statistical model study  

Science Conference Proceedings (OSTI)

A statistical-stochastic model of the complete lifecycle of North Atlantic (NA) tropical cyclones (TCs) is used to examine the relationship between climate and landfall rates along the North-American Atlantic and Gulf coasts. The model draws on ...

Timothy Hall; Emmi Yonekura

434

East North Central Pa  

Gasoline and Diesel Fuel Update (EIA)

East East North Central Pa cif ic Contiguous Mountain West North Central West South Central Pacific Noncontiguous East South Central Sout h At lant ic Middle Atlantic New England 35. Average Price of Natural Gas Delivered to Consumers by Census Division, 1995-1996 (Dollars per Thousand Cubic Feet) Table Census Division Residential Commercial 1995 1996 1995 1996 New England ........................................................... 9.06 9.03 6.78 6.96 Middle Atlantic ......................................................... 7.75 8.00 6.04 6.57 East North Central ................................................... 5.05 5.44 4.57 4.94 West North Central .................................................. 4.97 5.54 4.08 4.71 South Atlantic........................................................... 6.89 7.50 5.33 6.14 East South Central...................................................

435

Prediction of Tropical Atlantic Sea Surface Temperatures Using Linear Inverse Modeling  

Science Conference Proceedings (OSTI)

The predictability of tropical Atlantic sea surface temperature on seasonal to interannual timescales by linear inverse modeling is quantified. The authors find that predictability of Caribbean Sea and north tropical Atlantic sea surface ...

Cécile Penland; Ludmila Matrosova

1998-03-01T23:59:59.000Z

436

Local Coupled Equatorial Variability versus Remote ENSO Forcing in an Intermediate Coupled Model of the Tropical Atlantic  

Science Conference Proceedings (OSTI)

The relative roles played by the remote El Niño–Southern Oscillation (ENSO) forcing and the local air–sea interactions in the tropical Atlantic are investigated using an intermediate coupled model (ICM) of the tropical Atlantic. The oceanic ...

Serena Illig; Boris Dewitte

2006-10-01T23:59:59.000Z

437

Optimal excitation of interannual atlantic meridional overturning circulation variability  

E-Print Network (OSTI)

The optimal excitation of Atlantic meridional overturning circulation (MOC) anomalies is investigated in an ocean general circulation model with an idealized configuration. The optimal three-dimensional spatial structure ...

Zanna, Laure

438

A Pilot Research Moored Array in the Tropical Atlantic (PIRATA)  

Science Conference Proceedings (OSTI)

The tropical Atlantic Ocean is characterized by a large seasonal cycle around which there are climatically significant interannual and decadal timescale variations. The most pronounced of these interannual variations are equatorial warm events, ...

Jacques Servain; Antonio J. Busalacchi; Michael J. McPhaden; Antonio D. Moura; Gilles Reverdin; Marcio Vianna; Stephen E. Zebiak

1998-10-01T23:59:59.000Z

439

Equatorial Atlantic Velocity and Temperature Observations: February–November 1981  

Science Conference Proceedings (OSTI)

Upper ocean velocity and temperature measurements were obtained in the central equatorial Atlantic using surface moored current meters from February to November 1981. Distinct seasonal variations were observed in the zonal momentum and ...

R. H. Weisberg

1985-05-01T23:59:59.000Z

440

Deep Convective System Evolution over Africa and the Tropical Atlantic  

Science Conference Proceedings (OSTI)

In the tropical African and neighboring Atlantic region there is a strong contrast in the properties of deep convection between land and ocean. Here, satellite radar observations are used to produce a composite picture of the life cycle of ...

Joanna M. Futyan; Anthony D. Del Genio

2007-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

A Nonlinear Response of Sahel Rainfall to Atlantic Warming  

Science Conference Proceedings (OSTI)

The response over West Africa to uniform warming of the Atlantic Ocean is analyzed using idealized simulations with a regional climate model. With warming of 1 and 1.5 K, rainfall rates increase by 30%–50% over most of West Africa. With Atlantic ...

Naresh Neupane; Kerry H. Cook

2013-09-01T23:59:59.000Z

442

A nonlinear response of Sahel rainfall to Atlantic warming  

Science Conference Proceedings (OSTI)

The response over West Africa to uniform warming of the Atlantic Ocean is analyzed using idealized simulations with a regional climate model. With warming of 1 K and 1.5 K, rainfall rates increase by 30-50% over most of West Africa. With Atlantic ...

Naresh Neupane; Kerry H. Cook

443

Molecular diversity and adaptations of microorganisms from the deep ocean  

E-Print Network (OSTI)

in the North Pacific ocean. ISME J. 3:1374-1386. DeLong, E.microbial assemblages in the ocean's interior. Science 311:J. 4:159-170. Schlitzer, R. 2010. Ocean Data View. [http://

Eloe, Emiley Ansley

2011-01-01T23:59:59.000Z

444

Europe's Defense Policy and NATO's Strategic Concept A new Atlantic partnership for the 21st century ?  

E-Print Network (OSTI)

Organization NC0 noncommissioned officer NPT Non-Proliferation Treaty OCS Officer Candidate School OPD independently targetable reentry vehicle MIT Massachusetts Institute of Technology NATO North Atlantic Treaty

445

Dynamics of global ocean heat transport variability  

E-Print Network (OSTI)

A state-of-the-art, high-resolution ocean general circulation model is used to estimate the time-dependent global ocean heat transport and investigate its dynamics. The north-south heat transport is the prime manifestation ...

Jayne, Steven Robert

1999-01-01T23:59:59.000Z

446

Electrically Active Convection in Tropical Easterly Waves and Implications for Tropical Cyclogenesis in the Atlantic and East Pacific  

Science Conference Proceedings (OSTI)

In this study, the authors investigated the characteristics of tropical easterly wave convection and the possible implications of convective structure on tropical cyclogenesis and intensification over the Atlantic Ocean and the east Pacific Ocean. ...

Kenneth D. Leppert II; Walter A. Petersen; Daniel J. Cecil

2013-02-01T23:59:59.000Z

447

Long-Term Predictions of Global Climate Using the Ocean Conveyor  

SciTech Connect

Many have attributed the Great Ocean Conveyor as a major driver of global climate change over millennia as well as a possible explanation for shorter (multidecadal) oscillations. The conveyor is thought to have a cycle time on the order of 1000 years, however recent research has suggested that it is much faster than previously believed (about 100 years). A faster conveyor leads to the possibility of the conveyor's role in even shorter oscillations such as the El Nino/Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO). The conveyor is primarily density driven. In this study the salty outflow of the Red Sea is used to predict its behavior ten years into the future. A successful model could lead to a long-term prediction (ten years) of El Ninos, Atlantic hurricane season intensity, as well as global temperature and precipitation patterns.

Ray, P.; Wilson, J.R.

2003-01-01T23:59:59.000Z

448

North Carolina's 6th congressional district: Energy Resources...  

Open Energy Info (EERE)

North Carolina. Registered Energy Companies in North Carolina's 6th congressional district Outer Banks Ocean Energy Corporation RF Micro Devices RF Micro Devices Inc RFMD Soleil...

449

Two stable equilibria of the Atlantic Subpolar Gyre  

Science Conference Proceedings (OSTI)

The cyclonic circulation of the Atlantic subpolar gyre is a key mechanism for North Atlantic climate variability on a wide range of time scales. It is generally accepted that it is driven by both cyclonic winds and buoyancy forcing, yet the ...

Andreas Born; Thomas F. Stocker

450

Wave Extremes in the Northeast Atlantic from Ensemble Forecasts  

Science Conference Proceedings (OSTI)

A method for estimating return values from ensembles of forecasts at advanced lead times is presented. Return values of significant wave height in the northeast Atlantic, the Norwegian Sea, and the North Sea are computed from archived +240-h ...

Øyvind Breivik; Ole Johan Aarnes; Jean-Raymond Bidlot; Ana Carrasco; Øyvind Saetra

2013-10-01T23:59:59.000Z

451

Biodiversity and connectivity in peripheral populations of corals of the South and Eastern Atlantic  

E-Print Network (OSTI)

Fortaleza Belize Panama Puerto Rico Bermuda São Tomé b-Panamá, Belize and Puerto Rico) and the North Atlantic (Belize, Panamá and Puerto Rico), one site in the North

Nunes, Flávia

2009-01-01T23:59:59.000Z

452

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 of the conventional linkage that begins with northward Ekman transport and extends to the North Atlantic (NA) overturning, the author investigates a new linkage that begins with the Southern Hemisphere (SH) sea-ice – ocean interaction perturbed by the anomalous SO winds and extends to the SH overturning, the response of the NA overturning, and the long-term baroclinic adjustment of the Antarctic Circumpolar Current (ACC). How the above two linkages will interact with each other in a warming world is also investigated. An interactive momentum flux forcing, allowing for the strength of momentum flux between atmosphere and sea ice to vary in response to the simulated sea-ice conditions, enhances wind-driven ice divergence to increase the fraction of leads and polynyas, which increases dense water formation, and thus intensifies convection. Within three experimental frameworks, this increased dense water consistently increases the Antarctic Bottom Water formation, which directly intensifies the SH overturning and indirectly weakens the NA overturning. As a result of the hemispheric change in overturning circulations, the meridional density gradient across the ACC appears to increase, ultimately increasing the baroclinic part of the ACC via an enhanced thermal wind shear. Subsequently, impacts of the poleward shifted and intensified SH subpolar westerly winds (SWWs) on the global ocean circulation are investigated in phases. When the SWWs are only shifted poleward, the effect of the anomalous winds is transmitted to the northern NA, decreasing both the NA overturning and the North Atlantic Deep Water (NADW) outflow. However, when the SWWs are shifted poleward and intensified, this effect is cut off by the intensified Deacon cell overturning, and is not transmitted to the northern NA, and instead increases the NADW outflow substantially. To sum up, with respect to the SO winds perturbed by the global warming, the SH overturning cell and the NADW outflow increase, leading to an increase in the volume transport of the ACC.

Cheon, Woo Geunn

2008-08-01T23:59:59.000Z

453

Analyses of Nuclear ldhA Gene and mtDNA Control Region Sequences of Atlantic Northern Bluen Tuna  

E-Print Network (OSTI)

Analyses of Nuclear ldhA Gene and mtDNA Control Region Sequences of Atlantic Northern Blue®n Tuna: There has been considerable debate about whether the Atlantic northern blue®n tuna exist as a single®n tuna from the Mediterranean Sea and the northwestern Atlantic Ocean. Pairwise comparisons of multiple

Ely, Bert

454

Atlantic bluefin tuna (Thunnus thyn-nus thynnus) is a highly migratory  

E-Print Network (OSTI)

118 Atlantic bluefin tuna (Thunnus thyn- nus thynnus) is a highly migratory pelagic species encountered south of 20°N since the 1960s. Two blue- fin tuna breeding sites are known in the North Atlantic for bluefin tuna along the North American and European coasts, and to a lesser degree in the high seas

455

Temperature Inversions in the Subarctic North Pacific  

Science Conference Proceedings (OSTI)

Hydrographic data from the World Ocean Database 2001 and Argo profiling floats were analyzed to study temperature inversions in the subarctic North Pacific Ocean. The frequency distribution of temperature inversions [F(t-inv)] at a resolution of ...

Hiromichi Ueno; Ichiro Yasuda

2005-12-01T23:59:59.000Z

456

Ocean Heat Uptake in Eddying and Non-Eddying Ocean Circulation Models in a Warming Climate  

Science Conference Proceedings (OSTI)

Ocean heat uptake is explored with non-eddying (2°), eddy-permitting (0.25°), and eddy-resolving (0.125°) ocean circulation models in a domain representing the Atlantic basin connected to a southern circumpolar channel with a flat bottom. The ...

Yu Zhang; Geoffrey K. Vallis

2013-10-01T23:59:59.000Z

457

Ocean heat uptake in eddying and non-eddying ocean circulation models in a warming climate  

Science Conference Proceedings (OSTI)

Ocean heat uptake is explored with non-eddying (2°), eddy-permitting (0.25°) and eddy-resolving (0.125°) ocean circulation models in a domain representing the Atlantic basin connected to a southern circumpolar channel with flat bottom. The model ...

Yu Zhang; Geoffrey K. Vallis

458

Methods for the Reconstruction of Vertical Profiles from Surface Data: Multivariate Analyses, Residual GEM, and Variable Temporal Signals in the North Pacific Ocean  

Science Conference Proceedings (OSTI)

Different methods for the extrapolation of vertical profiles from sea surface measurements have been tested on 14 yr of conductivity–temperature–depth (CTD) data collected within the Hawaii Ocean Time-series (HOT) program at A Long-Term ...

Bruno Buongiorno Nardelli; Rosalia Santoleri

2005-11-01T23:59:59.000Z

459

Inter-annual Tropospheric Aerosol Variability in Late Twentieth Century and its Impact on Tropical Atlantic and West African Climate by Direct and Semi-direct Effects  

Science Conference Proceedings (OSTI)

A new high-resolution (0.9$^{\\circ}$x1.25$^{\\circ}$ in the horizontal) global tropospheric aerosol dataset with monthly resolution is generated using the finite-volume configuration of Community Atmosphere Model (CAM4) coupled to a bulk aerosol model and forced with recent estimates of surface emissions for the latter part of twentieth century. The surface emissions dataset is constructed from Coupled Model Inter-comparison Project (CMIP5) decadal-resolution surface emissions dataset to include REanalysis of TROpospheric chemical composition (RETRO) wildfire monthly emissions dataset. Experiments forced with the new tropospheric aerosol dataset and conducted using the spectral configuration of CAM4 with a T85 truncation (1.4$^{\\circ}$x1.4$^{\\circ}$) with prescribed twentieth century observed sea surface temperature, sea-ice and greenhouse gases reveal that variations in tropospheric aerosol levels can induce significant regional climate variability on the inter-annual timescales. Regression analyses over tropical Atlantic and Africa reveal that increasing dust aerosols can cool the North African landmass and shift convection southwards from West Africa into the Gulf of Guinea in the spring season in the simulations. Further, we find that increasing carbonaceous aerosols emanating from the southwestern African savannas can cool the region significantly and increase the marine stratocumulus cloud cover over the southeast tropical Atlantic ocean by aerosol-induced diabatic heating of the free troposphere above the low clouds. Experiments conducted with CAM4 coupled to a slab ocean model suggest that present day aerosols can shift the ITCZ southwards over the tropical Atlantic and can reduce the ocean mixed layer temperature beneath the increased marine stratocumulus clouds in the southeastern tropical Atlantic.

Evans, Katherine J [ORNL; Hack, James J [ORNL; Truesdale, John [National Center for Atmospheric Research (NCAR); Mahajan, Salil [ORNL; Lamarque, J-F [University Center for Atmospheric Research

2012-01-01T23:59:59.000Z

460

BOTTLENOSE DOLPHIN (Tursiops truncatus): Northern Gulf of Mexico Oceanic Stock  

E-Print Network (OSTI)

Thirty-eight stocks have been provisionally identified for Gulf of Mexico bottlenose dolphins (Waring et al. 2001). Gulf of Mexico inshore habitat has been separated into 33 bay, sound and estuarine stocks. Three northern Gulf of Mexico coastal stocks include nearshore waters from the shore to the 20 m isobath. The continental shelf stock encompasses waters from 20 to 200 m deep. The Gulf of Mexico oceanic stock encompasses the waters from the 200 m isobath to the seaward extent of the U.S. Exclusive Economic Zone (EEZ; Figure 1). Both “coastal/nearshore ” and “offshore ” ecotypes of bottlenose dolphins (Hersh and Duffield 1990) occur in the Gulf of Mexico (LeDuc and Curry 1998). The offshore and nearshore ecotypes are genetically distinct using both mitochondrial and nuclear markers (Hoelzel et al. 1998). In the northwestern Atlantic, Torres et al. (2003) found a statistically significant break in the distribution of the ecotypes at 34 km from shore. The offshore ecotype was found exclusively seaward of 34 km and in waters deeper than 34 m. Within 7.5 km of shore, all animals were of the coastal ecotype. If the distribution of ecotypes found by Torres et al. (2003) is similar in the northern Gulf of Mexico, the oceanic stock consists of the offshore ecoptype. Based on research currently being conducted on bottlenose dolphins in the Gulf of Mexico, as well as the western North Atlantic Ocean, the structure of these stocks is uncertain, but appears to be complex. The multi-disciplinary research programs conducted over the last two decades (e.g., Wells 1994) are beginning to shed light on stock structures of bottlenose dolphins, though additional analyses are needed before stock structures can be elaborated on in the Gulf of Mexico. As research is completed, it may be necessary to revise all the stocks of bottlenose dolphins in the Gulf of Mexico. POPULATION SIZE Estimates of abundance were derived through the application of distance sampling

Stock Definition; Geographic Range

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

The Balanced Dynamical Nature of a Rapidly Intensifying Oceanic Cyclone  

Science Conference Proceedings (OSTI)

Aided with a numerical simulation, the authors diagnose the synoptic-scale evolution of an intense extratropical cyclone over the western Atlantic Ocean from the perspective of balanced dynamics using potential vorticity inversion techniques. The ...

Christopher A. Davis; Evelyn Donall Grell; M. A. Shapiro

1996-01-01T23:59:59.000Z

462

A multi-model study of sea surface temperature and sub-surface density fingerprints of the Atlantic meridional overturning circulation  

Science Conference Proceedings (OSTI)

The Atlantic meridional overturning circulation (AMOC) is an important component of the North Atlantic climate system. Here, we use simulations from ten coupled climate models to calculate patterns of sea surface temperature (SST) and sub-surface ...

Christopher D. Roberts; Freya K. Garry; Laura C. Jackson

463

Eastward Flow through the Mid-Atlantic Ridge at 11°N and Its Influence on the Abyss of the Eastern Basin  

Science Conference Proceedings (OSTI)

The dilute Antarctic Bottom Water of the North Atlantic eastern trough is supplied from the western trough through fractures in the Mid-Atlantic Ridge. In particular, the influence on eastern trough property distributions of flow through the ...

M. S. McCartney; S. L. Bennett; M. E. Woodgate-Jones

1991-08-01T23:59:59.000Z

464

Dominant Anomaly Patterns in the Near-Surface Baroclinicity and Accompanying Anomalies in the Atmosphere and Oceans. Part II: North Pacific Basin  

Science Conference Proceedings (OSTI)

Variability in the monthly-mean flow and storm track in the North Pacific basin is examined with a focus on the near-surface baroclinicity. Dominant patterns of anomalous near-surface baroclinicity found from empirical orthogonal function (EOF) ...

Mototaka Nakamura; Shozo Yamane

2010-12-01T23:59:59.000Z

465

The Role of Oceanic Heat Transport and Wind Stress Forcing in Abrupt Millennial-Scale Climate Transitions  

Science Conference Proceedings (OSTI)

The last glacial period was punctuated by rapid climate shifts, known as Dansgaard–Oeschger events, with strong imprint in the North Atlantic sector suggesting that they were linked with the Atlantic meridional overturning circulation. Here an ...

Olivier Arzel; Alain Colin de Verdière; Matthew H. England

2010-05-01T23:59:59.000Z

466

Comparison of COADS Release 1a Winds with Instrumental Measurements in the Northwest Atlantic  

Science Conference Proceedings (OSTI)

The reliability of the Comprehensive Ocean–Atmosphere Dataset (COADS) Release 1a 2° monthly winds is tested by comparing it with instrumental measurements in the northwest Atlantic from 1981 to 1991. The instrumental dataset contains anemometer ...

Sergey K. Gulev

1999-01-01T23:59:59.000Z

467

Global Teleconnections in Response to a Shutdown of the Atlantic Meridional Overturning Circulation  

Science Conference Proceedings (OSTI)

The global response to a shutdown of the Atlantic meridional overturning circulation (AMOC) is investigated by conducting a water-hosing experiment with a coupled ocean–atmosphere general circulation model. In the model, the addition of ...

Lixin Wu; Chun Li; Chunxue Yang; Shang-Ping Xie

2008-06-01T23:59:59.000Z

468

Atlantic to Mediterranean Sea Level Difference Driven by Winds near Gibraltar Strait  

Science Conference Proceedings (OSTI)

Observations and numerical simulations show that winds near Gibraltar Strait cause an Atlantic Ocean to Mediterranean Sea sea level difference of 20 cm peak to peak with a 3-cm standard deviation for periods of days to years. Theoretical ...

Dimitris Menemenlis; Ichiro Fukumori; Tong Lee

2007-02-01T23:59:59.000Z

469

Intrinsic Nonlinearity and Spectral Structure of Internal Tides at an Idealized Mid-Atlantic Bight Shelfbreak  

Science Conference Proceedings (OSTI)

To quantify dynamical aspects of internal tide generation at the Mid-Atlantic Bight shelfbreak, this study employs an idealized ocean model initialized by climatological summertime stratification and forced by monochromatic barotropic tidal ...

Weifeng G. Zhang; Timothy F. Duda

470

Coupled Variability and Predictability in a Stochastic Climate Model of the Tropical Atlantic  

Science Conference Proceedings (OSTI)

The coupled variability and predictability of the tropical Atlantic ocean–atmosphere system were analyzed within the framework of a linear stochastic climate model. Despite the existence of a meridional dipole as the leading mode, tropical ...

Faming Wang; Ping Chang

2008-12-01T23:59:59.000Z

471

Seasonal Variability of the Atlantic Meridional Overturning Circulation at 26.5°N  

Science Conference Proceedings (OSTI)

The Atlantic meridional overturning circulation (AMOC) makes the strongest oceanic contribution to the meridional redistribution of heat. Here, an observation-based, 48-month-long time series of the vertical structure and strength of the AMOC at ...

T. Kanzow; S. A. Cunningham; W. E. Johns; J. J-M. Hirschi; J. Marotzke; M. O. Baringer; C. S. Meinen; M. P. Chidichimo; C. Atkinson; L. M. Beal; H. L. Bryden; J. Collins

2010-11-01T23:59:59.000Z

472

Assimilation of Temperature Profiles in a General Circulation Model of the Tropical Atlantic  

Science Conference Proceedings (OSTI)

Thirty-six hundred temperature profiles collected during 1984 were assimilated into a multilayer primitive equation model of the tropical Atlantic Ocean. The method consists in a monthly correction of the simulated temperature field. Each month, ...

Alain Morliére; Gills Reverdin; Jacques Merle

1989-12-01T23:59:59.000Z

473

The General Circulation and Meridional Heat Transport of the Subtropical South Atlantic Determined by Inverse Methods  

Science Conference Proceedings (OSTI)

Using hydrographic data of the IGY and METEOR expeditions, the inverse method of Wunsch (1978) has been applied to the subtropical South Atlantic Ocean to determine its general circulation and meridional heat transport. The method is based on the ...

Lee-Lueng Fu

1981-09-01T23:59:59.000Z

474

Atlantic Equatorial Deep Jets: Space–Time Structure and Cross-Equatorial Fluxes  

Science Conference Proceedings (OSTI)

The so-called equatorial stacked jets are analyzed with ship-board observations and moored time series from the Atlantic Ocean. The features are identified and isolated by comparing vertical wavenumber spectra at the equator with those a few ...

Uwe Send; Carsten Eden; Friedrich Schott

2002-03-01T23:59:59.000Z

475

Satellite-Derived Surface Current Divergence in Relation to Tropical Atlantic SST and Wind  

Science Conference Proceedings (OSTI)

The relationships between tropical Atlantic Ocean surface currents and horizontal (mass) divergence, sea surface temperature (SST), and winds on monthly-to-annual time scales are described for the time period from 1993 through 2003. Surface ...

Robert W. Helber; Robert H. Weisberg; Fabrice Bonjean; Eric S. Johnson; Gary S. E. Lagerloef

2007-05-01T23:59:59.000Z

476

Eddy-Train Encounters with a Continental Boundary: A South Atlantic Case Study  

Science Conference Proceedings (OSTI)

Satellite altimetry suggests that large anticyclonic eddies (rings) originating from the Agulhas Current retroflection occasionally make their way across the entire South Atlantic Ocean. What happens when these rings encounter a western boundary ...

José L. L. Azevedo; Doron Nof; Mauricio M. Mata

2012-09-01T23:59:59.000Z

477

Deep Circulation in the South Atlantic Induced by Bottom-Intensified Mixing over the Midocean Ridge  

Science Conference Proceedings (OSTI)

The deep circulation in the South Atlantic is studied through numerical experiments, using an oceanic general circulation model based on z coordinates. The new feature of these numerical experiments is that diapycnal mixing is idealized as strong ...

Rui Xin Huang; Xiangze Jin

2002-04-01T23:59:59.000Z

478

Case Studies of Tropical Cyclones and Phytoplankton Blooms over Atlantic and Pacific Regions  

Science Conference Proceedings (OSTI)

This study investigates phytoplankton blooms following the passage of Tropical Cyclones in the Atlantic and Pacific Ocean Basins. The variables of sea surface temperature (SST), chlorophyll (Chl-a), precipitation, and storm surface winds were ...

Ashley M. Merritt-Takeuchi; Sen Chiao

479

Blue and fin whale call source levels and propagation range in the Southern Ocean  

E-Print Network (OSTI)

H. ?2000?. Computational Ocean Acoustics ?Springer, Newin the northeast Paci?c Ocean,” J. Acoust. Soc. Am. 104,the eastern North Paci?c Ocean had maximum intensity 180–

Sirovic, Anna; Hildebrand, John A; Wiggins, Sean

2007-01-01T23:59:59.000Z

480

Methods for hydrographic data collection and use applied to infer biogeochemistry in the Southern Ocean  

E-Print Network (OSTI)

North and South Pacific Oceans between the 1960s and 1985–on "Saturation of the Southern Ocean CO 2 Sink Due to Recentand J. A. Kleypas (2009), Ocean acidification: the other CO

Carter, Brendan Rae

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "north atlantic ocean" 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

Significance of microscale interactions in bacterial ecology and carbon biogeochemistry in the ocean  

E-Print Network (OSTI)

organic particles in the ocean. Deep-Sea Res. , Part 1,micrometer particles in the ocean, Nature 345:242–244 Long,in the central North Pacific Ocean. Nature 330, 246 - 248

Malfatti, Francesca

2009-01-01T23:59:59.000Z

482

DOE/EA-1193: Environmental Assessment for the Atmospheric Radiation Measurement (ARM) Program North Slope of Alaska and Adjacent Artic Ocean Cloud and Radiation Testbed (CART) Site (February 1997)  

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

u. S. DEPARTMENT OF ENERGY u. S. DEPARTMENT OF ENERGY FINDING OF NO SIGNIFICANT IMPACT FINAL ENVIRONMENTAL ASSESSMENT - The United States Department of Energy (DOE) has prepared an environmental assessment (EA) for the Atmospheric Radiation Measurement Cloud and Radiation Testbed (ARM/CART), North Slope of Alaska and Adjacent Arctic Ocean. The purpose of the ARM/CART program is to collect and analyze atmospheric data for the development and validation of global climate change models. The program involves construction of several small facilities and operation of sensing equipment. The EA analyzes the impacts on land use, tundra, air quality, cultura.l resources, socioeconomics, and wildlife. Separate studies (summarized in the EA) were also conducted to ensure that the operation of the facilities would not

483

Observations of Steep Wave Statistics in Open Ocean Waters  

Science Conference Proceedings (OSTI)

A new wavelet analysis methodology is proposed to estimate the statistics of steep waves. The method is applied to open ocean wave height data from the Southern Ocean Waves Experiment (1992) and from a field experiment conducted at Duck, North ...

Nicholas Scott; Tetsu Hara; Edward J. Walsh; Paul A. Hwang

2005-03-01T23:59:59.000Z

484

Decadal Climate Variability over the North Pacific and North America: Dynamics and Predictability  

Science Conference Proceedings (OSTI)

The dynamics and predictability of decadal climate variability over the North Pacific and North America are investigated by analyzing various observational datasets and the output of a state of the art coupled ocean–atmosphere general circulation ...

M. Latif; T. P. Barnett

1996-10-01T23:59:59.000Z

485

Eastern North Atlantic Site, Graciosa Island, Azores  

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

ideal mix of conditions to study how clouds, aerosols, and precipitation interact. This new observation site will have significant enhancements to instruments previously deployed...

486

TABLE OF CONTENTS North Atlantic Division  

E-Print Network (OSTI)

National Laboratory Mutlu Kartin Ewa Ronnebro Vitalie Stavila Savannah River Nation Laboratory Ming Au National Laboratory Sandia National Laboratory Savannah River Nation Laboratory SuperProtonics Toyota

US Army Corps of Engineers

487

TABLE OF CONTENTS North Atlantic Division  

E-Print Network (OSTI)

, 2008. An option for removal of the Keyspan gas line is included in the contract awarded September 28: A contract for removal of rock areas from the Federal project was awarded on March 15, 2007. Work began dredging of the Inner Harbor was awarded on September 28, 2007 to Great Lakes Dredge and Dock Company

US Army Corps of Engineers

488

NATO UNCLASSIFIED NORTH ATLANTIC TREATY ORGANIZATION  

E-Print Network (OSTI)

Les systemes militaires doivent repondre a des normes tres severes. La norme militaire «Mil-Hdbk-217C Equipment", MIL-HDBK-217C, 1980. 2. Department of Defense of USA, "Military Standard: Definitions of terms

Kieras, David E.

489

Deuterium in North Atlantic Storm Tops  

Science Conference Proceedings (OSTI)

During the ERICA project in 1989, ice crystals were collected from the tops bf two winter storms and one broad cirrus cloud. Deuterium concentration in the storm ice samples, together with a model of isotope fractionation, are used to determine ...

Ronald B. Smith

1992-11-01T23:59:59.000Z

490

Changes of Extreme Wave Heights in Northern Hemisphere Oceans and Related Atmospheric Circulation Regimes  

Science Conference Proceedings (OSTI)

This study assesses trends in seasonal extremes (90- and 99-percentiles) of Significant Wave Height (SWH) in the North Atlantic and the North Pacific, as simulated in a 40-yr global wave hindcast using the National Centers for Environmental ...

Xiaolan L. Wang; Val R. Swail

2001-05-01T23:59:59.000Z

491

Carbon dioxide, hydrographic, and chemical data obtained during the R/V Meteor cruise 15/3 in the South Atlantic Ocean. WOCE Section A9, February--March 1991  

SciTech Connect

The increase in atmospheric carbon dioxide (CO{sub 2}) concentrations (as well as in other radiatively active trace gases) because of human activity has produced serious concern regarding the heat balance of the global atmosphere (Moore and Braswell 1994). The increasing concentrations of these gases may intensify the earth`s natural greenhouse effect, and force the global climate system in ways that are not well understood. The oceans play a major role in global carbon cycle processes. Carbon in the oceans is unevenly distributed because of complex circulation patterns and biogeochemical cycles, neither of which are completely understood. To better understand the ocean`s role in climate and climatic changes, several large experiments have been conducted in the past, and others are currently under way. The World Ocean Circulation Experiment (WOCE) is a major component of the World Climate Research Program. Although total carbon dioxide (TC0{sub 2}) is not an official WOCE measurement, a coordinated effort, supported in the United States by the US Department of Energy (DOE), is being made on WOCE cruises (through 1998) to measure the global, spatial, and temporal distributions of TC0{sub 2} and other carbon-related parameters. The CO{sub 2} survey goals include estimation of the meridional transport of inorganic carbon in a manner analogous to the oceanic heat transport (Bryden and Hall 1980; Brewer et al. 1989; Roemmich and Wunsch 1985), evaluation of the exchange of CO{sub 2} between the atmosphere and the ocean, and preparation of a database suitable for carbon-cycle modeling and the subsequent assessment of the anthropogenic C0{sub 2} increase in the oceans. The C0{sub 2} survey is taking advantage of the sampling opportunities provided by the WOCE cruises during this period. The final data set is expected to cover {approx_gt}23,000 stations.

Johnson, K.M.; Wallace, D.W.R.; Wilke, R.J. [Brookhaven National Lab., Upton, NY (United States); Goyet, C. [Woods Hole Oceanographic Inst., Woods Hole, MA (United States); Kozyr, A. [Oak Ridge National Lab., TN (United States)

1995-06-01T23:59:59.000Z

492

Why the ITCZ Is Mostly North of the Equator  

Science Conference Proceedings (OSTI)

Although the distribution of sunshine is symmetrical about the equator, the earth's climate is not. Climatic asymmetries are prominent in the eastern tropical Pacific and Atlantic Oceans where the regions of maximum sea surface temperature, ...

S. G. H. Philander; D. Gu; G. Lambert; T. Li; D. Halpern; N-C. Lau; R. C. Pacanowski

1996-12-01T23:59:59.000Z

493

Investigating the Utility of Using Cross-Oceanic Training Sets for Superensemble Forecasting of Eastern Pacific Tropical Cyclone Track and Intensity  

Science Conference Proceedings (OSTI)

This paper examines how combining training-set forecasts from two separate oceanic basins affects the resulting tropical cyclone track and intensity forecasts in a particular oceanic basin. Atlantic and eastern Pacific training sets for 2002 and ...

Mark R. Jordan II; T. N. Krishnamurti; Carol Anne Clayson

2008-06-01T23:59:59.000Z

494

Is There a Meridional Overturning Cell in the Pacific and Indian Oceans?  

Science Conference Proceedings (OSTI)

The diagnostic quasi-island model of Nof addressing the exchange between the South Atlantic and the Southern Ocean is extended to the exchange between the Pacific–Indian Ocean system and the Southern Ocean. The new calculations suggest that, in a ...

Doron Nof

2002-06-01T23:59:59.000Z

495

ATL ANTIC HIGHLY MIGR ATORY PEL AGIC FISHERIES atlantic highly  

E-Print Network (OSTI)

, bluefin tuna, yellowfin tuna, bigeye tuna, albacore, skipjack tuna, blue and white marlin, sailfish. In the Atlantic Ocean, swordfish and bluefin tuna have long been the target of im- portant fisheries. Since the early 1980's, yellowfin tuna and swordfish comprise the majority of the U.S. landings of tunas and tuna

496

A Linear Stability Analysis of Coupled Tropical Atlantic Variability  

Science Conference Proceedings (OSTI)

A linear stability analysis of an intermediate coupled ocean–atmosphere model reveals that the tropical Atlantic has two types of coupled modes: a meridional mode at the decadal time scale and a zonal mode at the interannual time scale. The ...

Faming Wang; Ping Chang

2008-06-01T23:59:59.000Z

497

Decadal variability of the Atlantic Meridional Overturning Circulation  

E-Print Network (OSTI)

In the mean, the Atlantic Ocean transports 1 to 1.5 PW of heat northward, and estimates suggest that 60% of this heat transport is associated with a circulation that reaches the cold waters of the abyss. Due to the role ...

Buckley, Martha Weaver

2011-01-01T23:59:59.000Z

498

Aeromagnetic Survey And Interpretation, Ascention Island, South Atlantic  

Open Energy Info (EERE)

And Interpretation, Ascention Island, South Atlantic And Interpretation, Ascention Island, South Atlantic Ocean Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Aeromagnetic Survey And Interpretation, Ascention Island, South Atlantic Ocean Details Activities (0) Areas (0) Regions (0) Abstract: A detailed aeromagnetic survey of Ascension Island, which was completed in February and March of 1983 as part of an evaluation of the geothermal potential of the island, is described. The aeromagnetic map represents a basic data set useful for the interpretation of subsurface geology. An in situ magnetic susceptibility survey was also carried out to assist in understanding the magnetic properties of Ascension rocks and to aid in the interpretation of the aeromagnetic data. The aeromagnetic survey

499

File:BOEMRE atlantic.OCS.multiple.use.map.2003.pdf | Open Energy  

Open Energy Info (EERE)

atlantic.OCS.multiple.use.map.2003.pdf atlantic.OCS.multiple.use.map.2003.pdf Jump to: navigation, search File File history File usage Multiple Uses of the Atlantic Outer Continental Shelf Size of this preview: 550 × 600 pixels. Full resolution ‎(4,958 × 5,408 pixels, file size: 3.06 MB, MIME type: application/pdf) Description Multiple Uses of the Atlantic Outer Continental Shelf Sources Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE) Related Technologies Offshore wind Creation Date 2003-10 Extent Northeast coast of US Countries United States UN Region Northern America States Maryland, Delaware, New Jersey, New York, Connecticut, Rhode Island, Massachusetts Map published in October 2003 by the BOEMRE illustrating multiple uses of the outer continental shelf of the Atlantic Ocean, in the region between

500

The Potential for Seasonal Forecasting of Winter Wave Heights in the Northern North Sea  

Science Conference Proceedings (OSTI)

The height of waves at North Sea oil and gas installations is an important factor governing the degree to which operational activities may be undertaken at those facilities. A link between the North Atlantic Oscillation (NAO) and winter (defined ...

Andrew W. Colman; Erika J. Palin; Michael G. Sanderson; Robert T. Harrison; Ian M. Leggett

2011-12-01T23:59:59.000Z