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Author Bashmachnikov, I.L. ; Fedorov, A.M. ; Vesman, A.V. ; Belonenko, T.V. ; Dukhovskoy, D.S.
Title Thermohaline convection in the subpolar seas of the North Atlantic from satellite and in situ observations. Part 2: indices of intensity of deep convection Type $loc['typeJournal Article']
Year 2019 Publication Abbreviated Journal
Volume 16
Issue 1
Pages 191-201
Keywords deep convection, assimilation of satellite data, altimetry, water density, the Greenland Sea, the Labrador Sea, the Irminger Sea
Abstract Variation in locations of the maximum development of deep convection in the subpolar seas, taking into account their small dimensions, represent difficulty in identifying its interannual variability from usually sparse in situ data. In this work, the interannual variability of the maximum convection depth, is obtained using one of the most complete datasets ARMOR, which combines in situ and satellite data. The convection depths, derived from ARMOR, are used for testing the efficiency of two indices of convection intensity: (1) sea-level anomalies from satellite altimetry and (2) the integral water density in the areas of the most frequent development of deep convection. The first index, capturing some details, shows low correlations with the interannual variability of the deep convection intensity. The second index shows high correlation with the deep convection intensity in the Greenland, Irminger and Labrador seas. Asynchronous variations in the deep convection intensity in the Labrador-Irminger seas and in the Greenland Sea are obtained. In the Labrador and in the Irminger seas, the quasi-seven-year variations in the convection intensity are identified.
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Call Number COAPS @ user @
Serial 1089
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Author Bastola, S. ; Misra, V.
Title Seasonal hydrological and nutrient loading forecasts for watersheds over the Southeastern United States Type $loc['typeJournal Article']
Year 2015 Publication Environmental Modelling & Software Abbreviated Journal Environmental Modelling & Software
Volume 73
Issue Pages 90-102
Keywords Rainfall-runoff model ; Seasonal hydrologic forecasting ; Southeastern United States ; Water quality ; Seasonal predictability
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1364-8152
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 95
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Author Coles, V.J. ; Stukel, M.R. ; Brooks, M.T. ; Burd, A. ; Crump, B.C. ; Moran, M.A. ; Paul, J.H. ; Satinsky, B.M. ; Yager, P.L. ; Zielinski, B.L. ; Hood, R.R.
Title Ocean biogeochemistry modeled with emergent trait-based genomics Type $loc['typeJournal Article']
Year 2017 Publication Science (New York, N.Y.) Abbreviated Journal Science
Volume 358
Issue 6367
Pages 1149-1154
Keywords Atlantic Ocean ; Biochemical Phenomena/genetics ; Metabolic Networks and Pathways/*genetics ; Metagenome ; *Metagenomics ; Microbial Consortia/*genetics ; Models, Biological ; Seawater/*microbiology ; Transcriptome
Abstract Marine ecosystem models have advanced to incorporate metabolic pathways discovered with genomic sequencing, but direct comparisons between models and “omics” data are lacking. We developed a model that directly simulates metagenomes and metatranscriptomes for comparison with observations. Model microbes were randomly assigned genes for specialized functions, and communities of 68 species were simulated in the Atlantic Ocean. Unfit organisms were replaced, and the model self-organized to develop community genomes and transcriptomes. Emergent communities from simulations that were initialized with different cohorts of randomly generated microbes all produced realistic vertical and horizontal ocean nutrient, genome, and transcriptome gradients. Thus, the library of gene functions available to the community, rather than the distribution of functions among specific organisms, drove community assembly and biogeochemical gradients in the model ocean.
Address Horn Point Laboratory, University of Maryland Center for Environmental Science (UMCES), Post Office Box 775, Cambridge, MD 21613, USA
Corporate Author Thesis
Publisher Place of Publication Editor
Language English
Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0036-8075
ISBN Medium
Area Expedition Conference
Funding strtoupper('2').strtolower('9191900')
Approved $loc['no']
Call Number COAPS @ rl18 @
Serial 989
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Author Downes, S.M. ; Farneti, R. ; Uotila, P. ; Griffies, S.M. ; Marsland, S.J. ; Bailey, D. ; Behrens, E. ; Bentsen, M. ; Bi, D. ; Biastoch, A. ; Böning, C. ; Bozec, A. ; Canuto, V.M. ; Chassignet, E. ; Danabasoglu, G. ; Danilov, S. ; Diansky, N. ; Drange, H. ; Fogli, P.G. ; Gusev, A. ; Howard, A. ; Ilicak, M. ; Jung, T. ; Kelley, M. ; Large, W.G. ; Leboissetier, A. ; Long, M. ; Lu, J. ; Masina, S. ; Mishra, A. ; Navarra, A. ; George Nurser, A.J. ; Patara, L. ; Samuels, B.L. ; Sidorenko, D. ; Spence, P. ; Tsujino, H. ; Wang, Q. ; Yeager, S.G.
Title An assessment of Southern Ocean water masses and sea ice during 1988-2007 in a suite of interannual CORE-II simulations Type $loc['typeJournal Article']
Year 2015 Publication Ocean Modelling Abbreviated Journal Ocean Modelling
Volume 94
Issue Pages 67-94
Keywords Southern Ocean ; CORE-II experiments ; Water masses ; Sea ice ; Ocean model intercomparison
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Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1463-5003
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 99
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Author Dukhovskoy, D.S. ; Myers, P.G. ; Platov, G. ; Timmermans, M.-L. ; Curry, B. ; Proshutinsky, A. ; Bamber, J.L. ; Chassignet, E. ; Hu, X. ; Lee, C.M. ; Somavilla, R.
Title Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers Type $loc['typeJournal Article']
Year 2016 Publication Journal of Geophysical Research: Oceans Abbreviated Journal J. Geophys. Res. Oceans
Volume 121
Issue 1
Pages 877-907
Keywords Greenland Ice Sheet melting ; Greenland freshwater ; thermohaline circulation ; Nordic Seas ; sub-Arctic seas ; Baffin Bay ; Labrador Sea
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2169-9275
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 35
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Author Dukhovskoy, D.S. ; Yashayaev, I. ; Proshutinsky, A. ; Bamber, J.L. ; Bashmachnikov, I.L. ; Chassignet, E.P. ; Lee, C.M. ; Tedstone, A.J.
Title Role of Greenland Freshwater Anomaly in the Recent Freshening of the Subpolar North Atlantic Type $loc['typeJournal Article']
Year 2019 Publication Journal of Geophysical Research: Oceans Abbreviated Journal J. Geophys. Res. Oceans
Volume 124
Issue 5
Pages 3333-3360
Keywords Greenland ice sheet melting ; freshwater anomaly ; subpolar North Atlantic ; subpolar gyre ; passive tracer numerical experiment ; freshwater budget
Abstract The cumulative Greenland freshwater flux anomaly has exceeded 5000 km3 since the 1990s. The volume of this surplus fresh water is expected to cause substantial freshening in the North Atlantic. Analysis of hydrographic observations in the subpolar seas reveal freshening signals in the 2010s. The sources of this freshening are yet to be determined. In this study, the relationship between the surplus Greenland freshwater flux and this freshening is tested by analyzing the propagation of the Greenland freshwater anomaly and its impact on salinity in the subpolar North Atlantic based on observational data and numerical experiments with and without the Greenland runoff. A passive tracer is continuously released during the simulations at freshwater sources along the coast of Greenland to track the Greenland freshwater anomaly. Tracer budget analysis shows that 44% of the volume of the Greenland freshwater anomaly is retained in the subpolar North Atlantic by the end of the simulation. This volume is sufficient to cause strong freshening in the subpolar seas if it stays in the upper 50�100 m. However, in the model the anomaly is mixed down to several hundred meters of the water column resulting in smaller magnitudes of freshening compared to the observations. Therefore, the simulations suggest that the accelerated Greenland melting would not be sufficient to cause the observed freshening in the subpolar seas and other sources of fresh water have contributed to the freshening. Impacts on salinity in the subpolar seas of the freshwater transport through Fram Strait and precipitation are discussed.
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Language Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 2169-9275
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Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ user @
Serial 1029
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Author Harris, R. ; Pollman, C. ; Hutchinson, D. ; Landing, W. ; Axelrad, D. ; Morey, S.L. ; Dukhovskoy, D. ; Vijayaraghavan, K.
Title A screening model analysis of mercury sources, fate and bioaccumulation in the Gulf of Mexico Type $loc['typeJournal Article']
Year 2012 Publication Environmental Research Abbreviated Journal Environ Res
Volume 119
Issue Pages 53-63
Keywords Animals ; Calibration ; Environmental Exposure ; Fishes/metabolism ; Humans ; Mercury/*chemistry/metabolism ; *Models, Theoretical ; Seawater/*chemistry ; Water Pollutants, Chemical/*chemistry/metabolism
Abstract A mass balance model of mercury (Hg) cycling and bioaccumulation was applied to the Gulf of Mexico (Gulf), coupled with outputs from hydrodynamic and atmospheric Hg deposition models. The dominant overall source of Hg to the Gulf is the Atlantic Ocean. Gulf waters do not mix fully however, resulting in predicted spatial differences in the relative importance of external Hg sources to Hg levels in water, sediments and biota. Direct atmospheric Hg deposition, riverine inputs, and Atlantic inputs were each predicted to be the most important source of Hg to at least one of the modeled regions in the Gulf. While incomplete, mixing of Gulf waters is predicted to be sufficient that fish Hg levels in any given location are affected by Hg entering other regions of the Gulf. This suggests that a Gulf-wide approach is warranted to reduce Hg loading and elevated Hg concentrations currently observed in some fish species. Basic data to characterize Hg concentrations and cycling in the Gulf are lacking but needed to adequately understand the relationship between Hg sources and fish Hg concentrations.
Address Reed Harris Environmental Ltd., 180 Forestwood Drive, Oakville, Ontario L6J4E6, Canada. reed@reed-harris.com
Corporate Author Thesis
Publisher Place of Publication Editor
Language English
Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0013-9351
ISBN Medium
Area Expedition Conference
Funding PMID:23102631
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 234
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Author Harris, R. ; Pollman, C. ; Landing, W. ; Evans, D. ; Axelrad, D. ; Hutchinson, D. ; Morey, S.L. ; Rumbold, D. ; Dukhovskoy, D. ; Adams, D.H. ; Vijayaraghavan, K. ; Holmes, C. ; Atkinson, R.D. ; Myers, T. ; Sunderland, E.
Title Mercury in the Gulf of Mexico: sources to receptors Type $loc['typeJournal Article']
Year 2012 Publication Environmental Research Abbreviated Journal Environ Res
Volume 119
Issue Pages 42-52
Keywords Air Pollutants/chemistry ; Animals ; Environmental Exposure ; Food Chain ; Geologic Sediments/chemistry ; Humans ; Mercury/*chemistry/metabolism ; Seawater/*chemistry ; Water Pollutants, Chemical/*chemistry/metabolism
Abstract Gulf of Mexico (Gulf) fisheries account for 41% of the U.S. marine recreational fish catch and 16% of the nation's marine commercial fish landings. Mercury (Hg) concentrations are elevated in some fish species in the Gulf, including king mackerel, sharks, and tilefish. All five Gulf states have fish consumption advisories based on Hg. Per-capita fish consumption in the Gulf region is elevated compared to the U.S. national average, and recreational fishers in the region have a potential for greater MeHg exposure due to higher levels of fish consumption. Atmospheric wet Hg deposition is estimated to be higher in the Gulf region compared to most other areas in the U.S., but the largest source of Hg to the Gulf as a whole is the Atlantic Ocean (>90%) via large flows associated with the Loop Current. Redistribution of atmospheric, Atlantic and terrestrial Hg inputs to the Gulf occurs via large scale water circulation patterns, and further work is needed to refine estimates of the relative importance of these Hg sources in terms of contributing to fish Hg levels in different regions of the Gulf. Measurements are needed to better quantify external loads, in-situ concentrations, and fluxes of total Hg and methylmercury in the water column, sediments, and food web.
Address Reed Harris Environmental Ltd, 180 Forestwood Drive, Oakville, Ontario L6J4E6, Canada. reed@reed-harris.com
Corporate Author Thesis
Publisher Place of Publication Editor
Language English
Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0013-9351
ISBN Medium
Area Expedition Conference
Funding PMID:23098613
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 233
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Author Hoffman, R.N. ; Privé, N. ; Bourassa, M.
Title Comments on “Reanalyses and Observations: What's the Difference?” Type $loc['typeJournal Article']
Year 2017 Publication Bulletin of the American Meteorological Society Abbreviated Journal Bull. Amer. Meteor. Soc.
Volume 98
Issue 11
Pages 2455-2459
Keywords GEOPHYSICAL DATA ; marine surface winds ; energy and water cycles
Abstract Are there important differences between reanalysis data and familiar observations and measurements? If so, what are they? This essay evaluates four possible answers that relate to: the role of inference, reliance on forecasts, the need to solve an ill-posed inverse problem, and understanding of errors and uncertainties. The last of these is argued to be most significant. The importance of characterizing uncertainties associated with results—whether those results are observations or measurements, analyses or reanalyses, or forecasts—is emphasized.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0003-0007
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ rl18 @
Serial 990
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Author Ilicak, M. ; Drange, H. ; Wang, Q. ; Gerdes, R. ; Aksenov, Y. ; Bailey, D. ; Bentsen, M. ; Biastoch, A. ; Bozec, A. ; Böning, C. ; Cassou, C. ; Chassignet, E. ; Coward, A.C. ; Curry, B. ; Danabasoglu, G. ; Danilov, S. ; Fernandez, E. ; Fogli, P.G. ; Fujii, Y. ; Griffies, S.M. ; Iovino, D. ; Jahn, A. ; Jung, T. ; Large, W.G. ; Lee, C. ; Lique, C. ; Lu, J. ; Masina, S. ; George Nurser, A.J. ; Roth, C. ; Salas y Mélia, D. ; Samuels, B.L. ; Spence, P. ; Tsujino, H. ; Valcke, S. ; Voldoire, A. ; Wang, X. ; Yeager, S.G.
Title An assessment of the Arctic Ocean in a suite of interannual CORE-II simulations. Part III: Hydrography and fluxes Type $loc['typeJournal Article']
Year 2016 Publication Ocean Modelling Abbreviated Journal Ocean Modelling
Volume 100
Issue Pages 141-161
Keywords Arctic Ocean ; Atlantic Water ; St. Anna Trough ; Density currents ; CORE-II atmospheric forcing
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Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1463-5003
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 80
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