Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers
Accelerating since the early 1990s, the Greenland Ice Sheet mass loss exerts a significant impact on thermohaline processes in the sub-Arctic seas. Surplus freshwater discharge from Greenland since the 1990s, comparable in volume to the amount of freshwater present during the Great Salinity Anomaly...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://doi.org/10.1002/2015JC011290 http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000371432200050 http://fsu.digital.flvc.org/islandora/object/fsu%3A405789/datastream/TN/view/Greenland%20freshwater%20pathways%20in%20the%20sub-Arctic%20Seas%20from%20model%20experiments%20with%20passive%20tracers.jpg |
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ftfloridastunidc:oai:fsu.digital.flvc.org:fsu_405789 2023-05-15T14:37:40+02:00 Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers Dukhovskoy, Dmitry S. (authoraut) Myers, Paul G. (authoraut) Platov, Gennady (authoraut) Timmermans, Mary-Louise (authoraut) Curry, Beth (authoraut) Proshutinsky, Andrey (authoraut) Bamber, Jonathan L. (authoraut) Chassignet, Eric (authoraut) Hu, Xianmin (authoraut) Lee, Craig M. (authoraut) Somavilla, Raquel (authoraut) 1 online resource computer application/pdf https://doi.org/10.1002/2015JC011290 http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000371432200050 http://fsu.digital.flvc.org/islandora/object/fsu%3A405789/datastream/TN/view/Greenland%20freshwater%20pathways%20in%20the%20sub-Arctic%20Seas%20from%20model%20experiments%20with%20passive%20tracers.jpg English eng eng Journal of Geophysical Research-Oceans--2169-9275 Text ftfloridastunidc https://doi.org/10.1002/2015JC011290 2020-08-10T18:23:14Z Accelerating since the early 1990s, the Greenland Ice Sheet mass loss exerts a significant impact on thermohaline processes in the sub-Arctic seas. Surplus freshwater discharge from Greenland since the 1990s, comparable in volume to the amount of freshwater present during the Great Salinity Anomaly events, could spread and accumulate in the sub-Arctic seas, influencing convective processes there. However, hydrographic observations in the Labrador Sea and the Nordic Seas, where the Greenland freshening signal might be expected to propagate, do not show a persistent freshening in the upper ocean during last two decades. This raises the question of where the surplus Greenland freshwater has propagated. In order to investigate the fate, pathways, and propagation rate of Greenland meltwater in the sub-Arctic seas, several numerical experiments using a passive tracer to track the spreading of Greenland freshwater have been conducted as a part of the Forum for Arctic Ocean Modeling and Observational Synthesis effort. The models show that Greenland freshwater propagates and accumulates in the sub-Arctic seas, although the models disagree on the amount of tracer propagation into the convective regions. Results highlight the differences in simulated physical mechanisms at play in different models and underscore the continued importance of intercomparison studies. It is estimated that surplus Greenland freshwater flux should have caused a salinity decrease by 0.06-0.08 in the sub-Arctic seas in contradiction with the recently observed salinification (by 0.15-0.2) in the region. It is surmised that the increasing salinity of Atlantic Water has obscured the freshening signal. abrupt climate-change, Baffin Bay, decadal oscillations, deep convection, general-circulation models, global ocean, Greenland freshwater, Greenland Ice Sheet melting, ice-sheet, Labrador Sea, Nordic Seas, north-atlantic ocean, overturning circulation, sub-Arctic seas, thermohaline circulation, thermohaline circulation The publisher’s version of record is available at http://www.dx.doi.org/10.1002/2015JC011290 Text Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Climate change Greenland Ice Sheet Labrador Sea Nordic Seas North Atlantic Florida State University Digital Library (FSUDL) Arctic Arctic Ocean Baffin Bay Greenland Journal of Geophysical Research: Oceans 121 1 877 907 |
institution |
Open Polar |
collection |
Florida State University Digital Library (FSUDL) |
op_collection_id |
ftfloridastunidc |
language |
English |
description |
Accelerating since the early 1990s, the Greenland Ice Sheet mass loss exerts a significant impact on thermohaline processes in the sub-Arctic seas. Surplus freshwater discharge from Greenland since the 1990s, comparable in volume to the amount of freshwater present during the Great Salinity Anomaly events, could spread and accumulate in the sub-Arctic seas, influencing convective processes there. However, hydrographic observations in the Labrador Sea and the Nordic Seas, where the Greenland freshening signal might be expected to propagate, do not show a persistent freshening in the upper ocean during last two decades. This raises the question of where the surplus Greenland freshwater has propagated. In order to investigate the fate, pathways, and propagation rate of Greenland meltwater in the sub-Arctic seas, several numerical experiments using a passive tracer to track the spreading of Greenland freshwater have been conducted as a part of the Forum for Arctic Ocean Modeling and Observational Synthesis effort. The models show that Greenland freshwater propagates and accumulates in the sub-Arctic seas, although the models disagree on the amount of tracer propagation into the convective regions. Results highlight the differences in simulated physical mechanisms at play in different models and underscore the continued importance of intercomparison studies. It is estimated that surplus Greenland freshwater flux should have caused a salinity decrease by 0.06-0.08 in the sub-Arctic seas in contradiction with the recently observed salinification (by 0.15-0.2) in the region. It is surmised that the increasing salinity of Atlantic Water has obscured the freshening signal. abrupt climate-change, Baffin Bay, decadal oscillations, deep convection, general-circulation models, global ocean, Greenland freshwater, Greenland Ice Sheet melting, ice-sheet, Labrador Sea, Nordic Seas, north-atlantic ocean, overturning circulation, sub-Arctic seas, thermohaline circulation, thermohaline circulation The publisher’s version of record is available at http://www.dx.doi.org/10.1002/2015JC011290 |
author2 |
Dukhovskoy, Dmitry S. (authoraut) Myers, Paul G. (authoraut) Platov, Gennady (authoraut) Timmermans, Mary-Louise (authoraut) Curry, Beth (authoraut) Proshutinsky, Andrey (authoraut) Bamber, Jonathan L. (authoraut) Chassignet, Eric (authoraut) Hu, Xianmin (authoraut) Lee, Craig M. (authoraut) Somavilla, Raquel (authoraut) |
format |
Text |
title |
Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers |
spellingShingle |
Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers |
title_short |
Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers |
title_full |
Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers |
title_fullStr |
Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers |
title_full_unstemmed |
Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers |
title_sort |
greenland freshwater pathways in the sub-arctic seas from model experiments with passive tracers |
url |
https://doi.org/10.1002/2015JC011290 http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000371432200050 http://fsu.digital.flvc.org/islandora/object/fsu%3A405789/datastream/TN/view/Greenland%20freshwater%20pathways%20in%20the%20sub-Arctic%20Seas%20from%20model%20experiments%20with%20passive%20tracers.jpg |
geographic |
Arctic Arctic Ocean Baffin Bay Greenland |
geographic_facet |
Arctic Arctic Ocean Baffin Bay Greenland |
genre |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Climate change Greenland Ice Sheet Labrador Sea Nordic Seas North Atlantic |
genre_facet |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Climate change Greenland Ice Sheet Labrador Sea Nordic Seas North Atlantic |
op_relation |
Journal of Geophysical Research-Oceans--2169-9275 |
op_doi |
https://doi.org/10.1002/2015JC011290 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
121 |
container_issue |
1 |
container_start_page |
877 |
op_container_end_page |
907 |
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1766309878714859520 |