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Validation of reanalysis Southern Ocean atmosphere trends using sea ice data

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dc.contributor.authorHobbs, W.R.
dc.contributor.authorKlekociuk, A.R.
dc.contributor.authorPan, Y.
dc.date.issued2020
dc.description.abstractReanalysis 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.
dc.description.statementofresponsibilityWilliam R. Hobbs, Andrew R. Klekociuk, and Yuhang Pan
dc.identifier.citationAtmospheric Chemistry and Physics (ACP), 2020; 20(23):14757-14768
dc.identifier.doi10.5194/acp-20-14757-2020
dc.identifier.issn1680-7316
dc.identifier.issn1680-7324
dc.identifier.orcidKlekociuk, A.R. [0000-0003-3335-0034]
dc.identifier.urihttps://hdl.handle.net/2440/132063
dc.language.isoen
dc.publisherCopernicus Publications
dc.relation.grantARC
dc.rights© Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
dc.source.urihttps://doi.org/10.5194/acp-20-14757-2020
dc.titleValidation of reanalysis Southern Ocean atmosphere trends using sea ice data
dc.typeJournal article
pubs.publication-statusPublished

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