The respective roles of Ocean Heat Transpor and surface heat fluxes in driving Arctic Ocean warming and sea ice decline
Arctic Ocean warming and sea ice loss are closely linked to increased ocean heat transport (OHT) into the Arctic and changes in surface heat fluxes. To quantitatively assess their respective roles, we use the 100-member Community Earth System Model, version 2 (CESM2), Large Ensemble over the 1920-21...
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Language: | English |
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Online Access: | https://doi.org/10.1175/JCLI-D-23-0399.1 |
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ftncar:oai:drupal-site.org:articles_26933 2024-04-14T08:00:26+00:00 The respective roles of Ocean Heat Transpor and surface heat fluxes in driving Arctic Ocean warming and sea ice decline Oldenburg, Dylan (author) Kwon, Young-Oh (author) Frankignoul, Claude (author) Danabasoglu, Gokhan (author) Yeager, Stephen (author) Kim, Who M. (author) 2024-02-15 https://doi.org/10.1175/JCLI-D-23-0399.1 en eng Journal of Climate--0894-8755--1520-0442 NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4--10.7265/efmz-2t65 articles:26933 doi:10.1175/JCLI-D-23-0399.1 ark:/85065/d77m0d2c Copyright 2024 American Meteorological Society (AMS). article Text 2024 ftncar https://doi.org/10.1175/JCLI-D-23-0399.1 2024-03-21T18:00:26Z Arctic Ocean warming and sea ice loss are closely linked to increased ocean heat transport (OHT) into the Arctic and changes in surface heat fluxes. To quantitatively assess their respective roles, we use the 100-member Community Earth System Model, version 2 (CESM2), Large Ensemble over the 1920-2100 period. We first examine the Arctic Ocean warming in a heat budget framework by calculating the contributions from heat exchanges with atmosphere and sea ice and OHT across the Arctic Ocean gateways. Then we quantify how much anomalous heat from the ocean directly translates to sea ice loss and how much is lost to the atmosphere. We find that Arctic Ocean warming is driven primarily by increased OHT through the Barents Sea Opening, with additional contributions from the Fram Strait and Bering Strait OHTs. These OHT changes are driven mainly by warmer inflowing water rather than changes in volume transports across the gateways. The Arctic Ocean warming driven by OHT is partially damped by increased heat loss through the sea surface. Although absorbed shortwave radiation increases due to reduced surface albedo, this increase is compensated by increasing upwelling longwave radiation and latent heat loss. We also explicitly calculate the contributions of ocean-ice and atmosphere-ice heat fluxes to sea ice heat budget changes. Throughout the entire twentieth century as well as the early twenty-first century, the atmosphere is the main contributor to ice heat gain in summer, though the ocean's role is not negligible. Over time, the ocean progressively becomes the main heat source for the ice as the ocean warms. 1852977 2106228 2106228 Article in Journal/Newspaper albedo Arctic Arctic Ocean Barents Sea Bering Strait Fram Strait Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Arctic Ocean Barents Sea Bering Strait Journal of Climate 37 4 1431 1448 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Arctic Ocean warming and sea ice loss are closely linked to increased ocean heat transport (OHT) into the Arctic and changes in surface heat fluxes. To quantitatively assess their respective roles, we use the 100-member Community Earth System Model, version 2 (CESM2), Large Ensemble over the 1920-2100 period. We first examine the Arctic Ocean warming in a heat budget framework by calculating the contributions from heat exchanges with atmosphere and sea ice and OHT across the Arctic Ocean gateways. Then we quantify how much anomalous heat from the ocean directly translates to sea ice loss and how much is lost to the atmosphere. We find that Arctic Ocean warming is driven primarily by increased OHT through the Barents Sea Opening, with additional contributions from the Fram Strait and Bering Strait OHTs. These OHT changes are driven mainly by warmer inflowing water rather than changes in volume transports across the gateways. The Arctic Ocean warming driven by OHT is partially damped by increased heat loss through the sea surface. Although absorbed shortwave radiation increases due to reduced surface albedo, this increase is compensated by increasing upwelling longwave radiation and latent heat loss. We also explicitly calculate the contributions of ocean-ice and atmosphere-ice heat fluxes to sea ice heat budget changes. Throughout the entire twentieth century as well as the early twenty-first century, the atmosphere is the main contributor to ice heat gain in summer, though the ocean's role is not negligible. Over time, the ocean progressively becomes the main heat source for the ice as the ocean warms. 1852977 2106228 2106228 |
author2 |
Oldenburg, Dylan (author) Kwon, Young-Oh (author) Frankignoul, Claude (author) Danabasoglu, Gokhan (author) Yeager, Stephen (author) Kim, Who M. (author) |
format |
Article in Journal/Newspaper |
title |
The respective roles of Ocean Heat Transpor and surface heat fluxes in driving Arctic Ocean warming and sea ice decline |
spellingShingle |
The respective roles of Ocean Heat Transpor and surface heat fluxes in driving Arctic Ocean warming and sea ice decline |
title_short |
The respective roles of Ocean Heat Transpor and surface heat fluxes in driving Arctic Ocean warming and sea ice decline |
title_full |
The respective roles of Ocean Heat Transpor and surface heat fluxes in driving Arctic Ocean warming and sea ice decline |
title_fullStr |
The respective roles of Ocean Heat Transpor and surface heat fluxes in driving Arctic Ocean warming and sea ice decline |
title_full_unstemmed |
The respective roles of Ocean Heat Transpor and surface heat fluxes in driving Arctic Ocean warming and sea ice decline |
title_sort |
respective roles of ocean heat transpor and surface heat fluxes in driving arctic ocean warming and sea ice decline |
publishDate |
2024 |
url |
https://doi.org/10.1175/JCLI-D-23-0399.1 |
geographic |
Arctic Arctic Ocean Barents Sea Bering Strait |
geographic_facet |
Arctic Arctic Ocean Barents Sea Bering Strait |
genre |
albedo Arctic Arctic Ocean Barents Sea Bering Strait Fram Strait Sea ice |
genre_facet |
albedo Arctic Arctic Ocean Barents Sea Bering Strait Fram Strait Sea ice |
op_relation |
Journal of Climate--0894-8755--1520-0442 NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4--10.7265/efmz-2t65 articles:26933 doi:10.1175/JCLI-D-23-0399.1 ark:/85065/d77m0d2c |
op_rights |
Copyright 2024 American Meteorological Society (AMS). |
op_doi |
https://doi.org/10.1175/JCLI-D-23-0399.1 |
container_title |
Journal of Climate |
container_volume |
37 |
container_issue |
4 |
container_start_page |
1431 |
op_container_end_page |
1448 |
_version_ |
1796300595147046912 |