FN Archimer Export Format PT J TI Arctic Ocean response to Greenland Sea wind anomalies in a suite of model simulations BT AF Muilwijk, Morven Ilicak, Mehmet Cornish, Sam B. Danilov, Sergey Gelderloos, Renske Gerdes, Rüdiger Haid, Verena Haine, Thomas W.N. Johnson, Helen L. Kostov, Yavor Kovács, Tamás Lique, Camille Marson, Juliana M. Myers, Paul G. Scott, Jon Smedsrud, Lars H. Talandier, Claude Wang, Qiang AS 1:1,2;2:3;3:4;4:5;5:6;6:5;7:12;8:6;9:4;10:8;11:5;12:7;13:9;14:9;15:10;16:1,2,11;17:12;18:5; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:PDG-ODE-LOPS-OH;13:;14:;15:;16:;17:;18:; C1 Geophysical Institute, University of Bergen Bergen ,Norway Bjerknes Centre for Climate Research Bergen, Norway Eurasia Institute of Earth Sciences, Istanbul Technical University Istanbul ,Turkey Department of Earth SciencesUniversity of Oxford Oxford ,UK Alfred‐Wegener‐Institut Helmholtz‐Zentrum für Polar‐ und Meeresforschung Bremerhaven ,Germany Department of Earth and Planetary SciencesThe Johns Hopkins University Baltimore ,USA Laboratoire d'Océanographie Physique et Spatiale, Univ. Brest, CNRS, IRD, Ifremer, IUEM Brest ,France Department of PhysicsUniversity of Oxford Oxford ,UK Department of Earth and Atmospheric SciencesUniversity of Alberta Edmonton Alberta, Canada Department of Earth, Atmospheric and Planetary SciencesMassachusetts Institute of Technology Cambridge ,USA University Centre in Svalbard Longyearbyen Svalbard, Norway Laboratoire d'Océanographie Physique et Spatiale, Univ. Brest, CNRS, IRD, Ifremer, IUEM Brest ,France C2 UNIV BERGEN, NORWAY BCCR, NORWAY UNIV TECH ISTANBUL, TURKEY UNIV OXFORD, UK INST A WEGENER, GERMANY UNIV JOHNS HOPKINS, USA IFREMER, FRANCE UNIV OXFORD, UK UNIV ALBERTA, CANADA MIT, USA UNIV CTR SVALBARD, NORWAY CNRS, FRANCE SI BREST SE PDG-ODE-LOPS-OH UM LOPS IN WOS Ifremer UMR WOS Cotutelle UMR copubli-france copubli-europe copubli-int-hors-europe copubli-sud IF 3.559 TC 31 UR https://archimer.ifremer.fr/doc/00510/62126/66338.pdf https://archimer.ifremer.fr/doc/00510/62126/66352.pdf https://archimer.ifremer.fr/doc/00510/62126/66353.gif https://archimer.ifremer.fr/doc/00510/62126/66354.gif https://archimer.ifremer.fr/doc/00510/62126/66355.gif https://archimer.ifremer.fr/doc/00510/62126/66356.gif https://archimer.ifremer.fr/doc/00510/62126/66357.gif https://archimer.ifremer.fr/doc/00510/62126/66358.gif LA English DT Article DE ;Arctic Ocean;Atlantic Water;sea ice;wind forcing;model intercomparison;FAMOS AB Multi‐model Arctic Ocean ``Climate Response Function” (CRF) experiments are analyzed in order to explore the effects of anomalous wind forcing over the Greenland Sea (GS) on poleward ocean heat transport, Atlantic Water (AW) pathways, and the extent of Arctic sea ice. Particular emphasis is placed on the sensitivity of the AW circulation to anomalously strong or weak GS winds in relation to natural variability, the latter manifested as part of the North Atlantic Oscillation (NAO). We find that anomalously strong (weak) GS wind forcing, comparable in strength to a strong positive (negative) NAO index, results in an intensification (weakening) of the poleward AW flow, extending from south of the North Atlantic Subpolar Gyre, through the Nordic Seas, and all the way into the Canadian Basin. Reconstructions made utilizing the calculated CRFs explain ~50 % of the simulated AW flow variance; this is the proportion of variability that can be explained by GS wind forcing. In the Barents and Kara Seas there is a clear relationship between the wind‐driven anomalous AW inflow and the sea ice extent. Most of the anomalous AW heat is lost to the atmosphere, and loss of sea ice in the Barents Sea results in even more heat loss to the atmosphere, and thus effective ocean cooling. Release of passive tracers in a subset of the suite of models reveals differences in circulation patterns and shows that the flow of AW in the Arctic Ocean is highly dependent on the wind stress in the Nordic Seas. Plain Language Summary The North Atlantic Current is an extension of the Gulf Stream, which brings warm Atlantic Water northward as the current flows through the Nordic Seas. Eventually it enters the cold deep Arctic Ocean basins through the Barents Sea and Fram Strait. Nine different numerical ocean‐ice models have been analyzed and compared in order to investigate: (1) their ability to simulate this northward flow of Atlantic Water, (2) its dependence on wind forcing, and (3) its impact on Arctic sea ice. Consistently, in all models, stronger winds in the Greenland Sea result in a stronger northward flow of warm Atlantic Water. The response on ocean circulation occurs from the North Atlantic, through the Nordic Seas and the Barents Sea, to the deep Canadian Basin. The flow of warm Atlantic Water within the Arctic Ocean is thus highly dependent on the wind stress in the Nordic Seas. There is particularly clear response in the Barents and Kara Seas where a wind‐driven anomalous warm inflow drives a smaller sea ice extent and thickness, and an increased heat transfer from the ocean to the atmosphere above. Weaker winds in the Greenland Sea produces weaker flow and hence a larger sea ice extent and thickness PY 2019 PD AUG SO Journal Of Geophysical Research-oceans SN 2169-9275 PU American Geophysical Union (AGU) VL 124 IS 8 UT 000490464200052 BP 6286 EP 6322 DI 10.1029/2019JC015101 ID 62126 ER EF