Investigating the local-scale influence of sea ice on Greenland surface melt
Rapid decline in Arctic sea ice cover in the 21st century may have wide-reaching effects on the Arctic climate system, including the Greenland ice sheet mass balance. Here, we investigate whether local changes in sea ice around the Greenland ice sheet have had an impact on Greenland surface melt. Sp...
Published in: | The Cryosphere |
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ftcopernicus:oai:publications.copernicus.org:tc58429 2023-05-15T14:57:51+02:00 Investigating the local-scale influence of sea ice on Greenland surface melt Stroeve, Julienne C. Mioduszewski, John R. Rennermalm, Asa Boisvert, Linette N. Tedesco, Marco Robinson, David 2018-09-27 application/pdf https://doi.org/10.5194/tc-11-2363-2017 https://tc.copernicus.org/articles/11/2363/2017/ eng eng doi:10.5194/tc-11-2363-2017 https://tc.copernicus.org/articles/11/2363/2017/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-11-2363-2017 2020-07-20T16:23:34Z Rapid decline in Arctic sea ice cover in the 21st century may have wide-reaching effects on the Arctic climate system, including the Greenland ice sheet mass balance. Here, we investigate whether local changes in sea ice around the Greenland ice sheet have had an impact on Greenland surface melt. Specifically, we investigate the relationship between sea ice concentration, the timing of melt onset and open-water fraction surrounding Greenland with ice sheet surface melt using a combination of remote sensing observations, and outputs from a reanalysis model and a regional climate model for the period of 1979–2015. Statistical analysis points to covariability between Greenland ice sheet surface melt and sea ice within Baffin Bay and Davis Strait. While some of this covariance can be explained by simultaneous influence of atmospheric circulation anomalies on both the sea ice cover and Greenland melt, within Baffin Bay we find a modest correlation between detrended melt onset over sea ice and the adjacent ice sheet melt onset. This correlation appears to be related to increased transfer of sensible and latent heat fluxes from the ocean to the atmosphere in early sea ice melt years, increasing temperatures and humidity over the ice sheet that in turn initiate ice sheet melt. Text Arctic Baffin Bay Baffin Bay Baffin Davis Strait Greenland Ice Sheet Sea ice Copernicus Publications: E-Journals Arctic Baffin Bay Greenland The Cryosphere 11 5 2363 2381 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
Rapid decline in Arctic sea ice cover in the 21st century may have wide-reaching effects on the Arctic climate system, including the Greenland ice sheet mass balance. Here, we investigate whether local changes in sea ice around the Greenland ice sheet have had an impact on Greenland surface melt. Specifically, we investigate the relationship between sea ice concentration, the timing of melt onset and open-water fraction surrounding Greenland with ice sheet surface melt using a combination of remote sensing observations, and outputs from a reanalysis model and a regional climate model for the period of 1979–2015. Statistical analysis points to covariability between Greenland ice sheet surface melt and sea ice within Baffin Bay and Davis Strait. While some of this covariance can be explained by simultaneous influence of atmospheric circulation anomalies on both the sea ice cover and Greenland melt, within Baffin Bay we find a modest correlation between detrended melt onset over sea ice and the adjacent ice sheet melt onset. This correlation appears to be related to increased transfer of sensible and latent heat fluxes from the ocean to the atmosphere in early sea ice melt years, increasing temperatures and humidity over the ice sheet that in turn initiate ice sheet melt. |
format |
Text |
author |
Stroeve, Julienne C. Mioduszewski, John R. Rennermalm, Asa Boisvert, Linette N. Tedesco, Marco Robinson, David |
spellingShingle |
Stroeve, Julienne C. Mioduszewski, John R. Rennermalm, Asa Boisvert, Linette N. Tedesco, Marco Robinson, David Investigating the local-scale influence of sea ice on Greenland surface melt |
author_facet |
Stroeve, Julienne C. Mioduszewski, John R. Rennermalm, Asa Boisvert, Linette N. Tedesco, Marco Robinson, David |
author_sort |
Stroeve, Julienne C. |
title |
Investigating the local-scale influence of sea ice on Greenland surface melt |
title_short |
Investigating the local-scale influence of sea ice on Greenland surface melt |
title_full |
Investigating the local-scale influence of sea ice on Greenland surface melt |
title_fullStr |
Investigating the local-scale influence of sea ice on Greenland surface melt |
title_full_unstemmed |
Investigating the local-scale influence of sea ice on Greenland surface melt |
title_sort |
investigating the local-scale influence of sea ice on greenland surface melt |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-11-2363-2017 https://tc.copernicus.org/articles/11/2363/2017/ |
geographic |
Arctic Baffin Bay Greenland |
geographic_facet |
Arctic Baffin Bay Greenland |
genre |
Arctic Baffin Bay Baffin Bay Baffin Davis Strait Greenland Ice Sheet Sea ice |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Davis Strait Greenland Ice Sheet Sea ice |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-11-2363-2017 https://tc.copernicus.org/articles/11/2363/2017/ |
op_doi |
https://doi.org/10.5194/tc-11-2363-2017 |
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The Cryosphere |
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11 |
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5 |
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2363 |
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2381 |
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1766329959611105280 |