Validation of reanalysis Southern Ocean atmosphere trends using sea ice data
Reanalysis products are an invaluable tool for representing variability and long-term trends in regions with limited in situ data, and especially the Antarctic. A comparison of eight different reanalysis products shows large differences in sea level pressure and surface air temperature trends over t...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus GmbH
2020
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ftunivtasmania:oai:eprints.utas.edu.au:44058 2023-05-15T13:41:50+02:00 Validation of reanalysis Southern Ocean atmosphere trends using sea ice data Hobbs, WR Klekociuk, AR Pan, Y 2020 application/pdf https://eprints.utas.edu.au/44058/ https://eprints.utas.edu.au/44058/1/141922%20-%20Validation%20of%20reanalysis%20Southern%20Ocean%20atmosphere%20trends%20using%20sea%20ice%20data.pdf en eng Copernicus GmbH https://eprints.utas.edu.au/44058/1/141922%20-%20Validation%20of%20reanalysis%20Southern%20Ocean%20atmosphere%20trends%20using%20sea%20ice%20data.pdf Hobbs, WR orcid:0000-0002-2061-0899 , Klekociuk, AR and Pan, Y 2020 , 'Validation of reanalysis Southern Ocean atmosphere trends using sea ice data' , Atmospheric Chemistry and Physics, vol. 20 , 14757–14768 , doi:10.5194/acp-20-14757-2020 <http://dx.doi.org/10.5194/acp-20-14757-2020>. Southern Ocean trends atmosphere Article PeerReviewed 2020 ftunivtasmania https://doi.org/10.5194/acp-20-14757-2020 2022-02-28T23:16:41Z Reanalysis products are an invaluable tool for representing variability and long-term trends in regions with limited in situ data, and especially the Antarctic. A comparison of eight different reanalysis products shows large differences in sea level pressure and surface air temperature trends over the high-latitude Southern Ocean, with implications for studies of the atmosphere's role in driving ocean–sea ice changes. In this study, we use the established close coupling between sea ice cover and surface temperature to evaluate these reanalysis trends using the independent, 30-year sea ice record from 1980 to 2010. We demonstrate that sea ice trends are a reliable validation tool for most months of the year, although the sea ice–surface temperature coupling is weakest in summer when the surface energy budget is dominated by atmosphere-to-ocean heat fluxes. Based on our analysis, we find that surface air temperature trends in JRA55 are most consistent with satellite-observed sea ice trends over the polar waters of the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean University of Tasmania: UTas ePrints Antarctic Southern Ocean The Antarctic Atmospheric Chemistry and Physics 20 23 14757 14768 |
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Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Southern Ocean trends atmosphere |
spellingShingle |
Southern Ocean trends atmosphere Hobbs, WR Klekociuk, AR Pan, Y Validation of reanalysis Southern Ocean atmosphere trends using sea ice data |
topic_facet |
Southern Ocean trends atmosphere |
description |
Reanalysis products are an invaluable tool for representing variability and long-term trends in regions with limited in situ data, and especially the Antarctic. A comparison of eight different reanalysis products shows large differences in sea level pressure and surface air temperature trends over the high-latitude Southern Ocean, with implications for studies of the atmosphere's role in driving ocean–sea ice changes. In this study, we use the established close coupling between sea ice cover and surface temperature to evaluate these reanalysis trends using the independent, 30-year sea ice record from 1980 to 2010. We demonstrate that sea ice trends are a reliable validation tool for most months of the year, although the sea ice–surface temperature coupling is weakest in summer when the surface energy budget is dominated by atmosphere-to-ocean heat fluxes. Based on our analysis, we find that surface air temperature trends in JRA55 are most consistent with satellite-observed sea ice trends over the polar waters of the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Hobbs, WR Klekociuk, AR Pan, Y |
author_facet |
Hobbs, WR Klekociuk, AR Pan, Y |
author_sort |
Hobbs, WR |
title |
Validation of reanalysis Southern Ocean atmosphere trends using sea ice data |
title_short |
Validation of reanalysis Southern Ocean atmosphere trends using sea ice data |
title_full |
Validation of reanalysis Southern Ocean atmosphere trends using sea ice data |
title_fullStr |
Validation of reanalysis Southern Ocean atmosphere trends using sea ice data |
title_full_unstemmed |
Validation of reanalysis Southern Ocean atmosphere trends using sea ice data |
title_sort |
validation of reanalysis southern ocean atmosphere trends using sea ice data |
publisher |
Copernicus GmbH |
publishDate |
2020 |
url |
https://eprints.utas.edu.au/44058/ https://eprints.utas.edu.au/44058/1/141922%20-%20Validation%20of%20reanalysis%20Southern%20Ocean%20atmosphere%20trends%20using%20sea%20ice%20data.pdf |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
https://eprints.utas.edu.au/44058/1/141922%20-%20Validation%20of%20reanalysis%20Southern%20Ocean%20atmosphere%20trends%20using%20sea%20ice%20data.pdf Hobbs, WR orcid:0000-0002-2061-0899 , Klekociuk, AR and Pan, Y 2020 , 'Validation of reanalysis Southern Ocean atmosphere trends using sea ice data' , Atmospheric Chemistry and Physics, vol. 20 , 14757–14768 , doi:10.5194/acp-20-14757-2020 <http://dx.doi.org/10.5194/acp-20-14757-2020>. |
op_doi |
https://doi.org/10.5194/acp-20-14757-2020 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
20 |
container_issue |
23 |
container_start_page |
14757 |
op_container_end_page |
14768 |
_version_ |
1766158897272324096 |