FudgeVariableRelationshipBetweenAccumulation.pdf
The Antarctic contribution to sea level is a balance between ice loss along the margin and accumulation in the interior. Accumulation records for the past few decades are noisy and show inconsistent relationships with temperature. We investigate the relationship between accumulation and temperature...
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ftoregonstate:ir.library.oregonstate.edu:g158bp15n 2023-06-18T03:38:14+02:00 FudgeVariableRelationshipBetweenAccumulation.pdf Fudge, T. J. Markle, Bradley R. Cuffey, Kurt M. Buizert, Christo Taylor, Kendrick C. Steig, Eric J. Waddington, Edwin D. Conway, Howard Koutnik, Michelle https://ir.library.oregonstate.edu/concern/articles/g158bp15n unknown https://ir.library.oregonstate.edu/concern/articles/g158bp15n Copyright Not Evaluated ftoregonstate 2023-06-04T16:53:14Z The Antarctic contribution to sea level is a balance between ice loss along the margin and accumulation in the interior. Accumulation records for the past few decades are noisy and show inconsistent relationships with temperature. We investigate the relationship between accumulation and temperature for the past 31 ka using high-resolution records from the West Antarctic Ice Sheet (WAIS) Divide ice core in West Antarctica. Although the glacial-interglacial increases result in high correlation and moderate sensitivity for the full record, the relationship shows considerable variability through time with high correlation and high sensitivity for the 0–8 ka period but no correlation for the 8–15 ka period. This contrasts with a general circulation model simulation which shows homogeneous sensitivities between temperature and accumulation across the entire time period. These results suggest that variations in atmospheric circulation are an important driver of Antarctic accumulation but they are not adequately captured in model simulations. Model-based projections of future Antarctic accumulation, and its impact on sea level, should be treated with caution. Other/Unknown Material Antarc* Antarctic Antarctica ice core Ice Sheet West Antarctica ScholarsArchive@OSU (Oregon State University) Antarctic The Antarctic West Antarctica West Antarctic Ice Sheet |
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ScholarsArchive@OSU (Oregon State University) |
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ftoregonstate |
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The Antarctic contribution to sea level is a balance between ice loss along the margin and accumulation in the interior. Accumulation records for the past few decades are noisy and show inconsistent relationships with temperature. We investigate the relationship between accumulation and temperature for the past 31 ka using high-resolution records from the West Antarctic Ice Sheet (WAIS) Divide ice core in West Antarctica. Although the glacial-interglacial increases result in high correlation and moderate sensitivity for the full record, the relationship shows considerable variability through time with high correlation and high sensitivity for the 0–8 ka period but no correlation for the 8–15 ka period. This contrasts with a general circulation model simulation which shows homogeneous sensitivities between temperature and accumulation across the entire time period. These results suggest that variations in atmospheric circulation are an important driver of Antarctic accumulation but they are not adequately captured in model simulations. Model-based projections of future Antarctic accumulation, and its impact on sea level, should be treated with caution. |
author |
Fudge, T. J. Markle, Bradley R. Cuffey, Kurt M. Buizert, Christo Taylor, Kendrick C. Steig, Eric J. Waddington, Edwin D. Conway, Howard Koutnik, Michelle |
spellingShingle |
Fudge, T. J. Markle, Bradley R. Cuffey, Kurt M. Buizert, Christo Taylor, Kendrick C. Steig, Eric J. Waddington, Edwin D. Conway, Howard Koutnik, Michelle FudgeVariableRelationshipBetweenAccumulation.pdf |
author_facet |
Fudge, T. J. Markle, Bradley R. Cuffey, Kurt M. Buizert, Christo Taylor, Kendrick C. Steig, Eric J. Waddington, Edwin D. Conway, Howard Koutnik, Michelle |
author_sort |
Fudge, T. J. |
title |
FudgeVariableRelationshipBetweenAccumulation.pdf |
title_short |
FudgeVariableRelationshipBetweenAccumulation.pdf |
title_full |
FudgeVariableRelationshipBetweenAccumulation.pdf |
title_fullStr |
FudgeVariableRelationshipBetweenAccumulation.pdf |
title_full_unstemmed |
FudgeVariableRelationshipBetweenAccumulation.pdf |
title_sort |
fudgevariablerelationshipbetweenaccumulation.pdf |
url |
https://ir.library.oregonstate.edu/concern/articles/g158bp15n |
geographic |
Antarctic The Antarctic West Antarctica West Antarctic Ice Sheet |
geographic_facet |
Antarctic The Antarctic West Antarctica West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet West Antarctica |
op_relation |
https://ir.library.oregonstate.edu/concern/articles/g158bp15n |
op_rights |
Copyright Not Evaluated |
_version_ |
1769003144604286976 |