Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability
Annually averaged precipitation in the form of snow, the dominant term of the Antarctic Ice Sheet surface mass balance, displays large spatial and temporal variability. Here we present an analysis of spatial patterns of regional Antarctic precipitation variability and their impact on integrated Anta...
Published in: | The Cryosphere |
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ftcopernicus:oai:publications.copernicus.org:tc59368 2023-05-15T13:54:27+02:00 Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability Fyke, Jeremy Lenaerts, Jan T. M. Wang, Hailong 2018-09-27 application/pdf https://doi.org/10.5194/tc-11-2595-2017 https://tc.copernicus.org/articles/11/2595/2017/ eng eng doi:10.5194/tc-11-2595-2017 https://tc.copernicus.org/articles/11/2595/2017/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-11-2595-2017 2020-07-20T16:23:33Z Annually averaged precipitation in the form of snow, the dominant term of the Antarctic Ice Sheet surface mass balance, displays large spatial and temporal variability. Here we present an analysis of spatial patterns of regional Antarctic precipitation variability and their impact on integrated Antarctic surface mass balance variability simulated as part of a preindustrial 1800-year global, fully coupled Community Earth System Model simulation. Correlation and composite analyses based on this output allow for a robust exploration of Antarctic precipitation variability. We identify statistically significant relationships between precipitation patterns across Antarctica that are corroborated by climate reanalyses, regional modeling and ice core records. These patterns are driven by variability in large-scale atmospheric moisture transport, which itself is characterized by decadal- to centennial-scale oscillations around the long-term mean. We suggest that this heterogeneity in Antarctic precipitation variability has a dampening effect on overall Antarctic surface mass balance variability, with implications for regulation of Antarctic-sourced sea level variability, detection of an emergent anthropogenic signal in Antarctic mass trends and identification of Antarctic mass loss accelerations. Text Antarc* Antarctic Antarctica ice core Ice Sheet Copernicus Publications: E-Journals Antarctic The Antarctic The Cryosphere 11 6 2595 2609 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Annually averaged precipitation in the form of snow, the dominant term of the Antarctic Ice Sheet surface mass balance, displays large spatial and temporal variability. Here we present an analysis of spatial patterns of regional Antarctic precipitation variability and their impact on integrated Antarctic surface mass balance variability simulated as part of a preindustrial 1800-year global, fully coupled Community Earth System Model simulation. Correlation and composite analyses based on this output allow for a robust exploration of Antarctic precipitation variability. We identify statistically significant relationships between precipitation patterns across Antarctica that are corroborated by climate reanalyses, regional modeling and ice core records. These patterns are driven by variability in large-scale atmospheric moisture transport, which itself is characterized by decadal- to centennial-scale oscillations around the long-term mean. We suggest that this heterogeneity in Antarctic precipitation variability has a dampening effect on overall Antarctic surface mass balance variability, with implications for regulation of Antarctic-sourced sea level variability, detection of an emergent anthropogenic signal in Antarctic mass trends and identification of Antarctic mass loss accelerations. |
format |
Text |
author |
Fyke, Jeremy Lenaerts, Jan T. M. Wang, Hailong |
spellingShingle |
Fyke, Jeremy Lenaerts, Jan T. M. Wang, Hailong Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability |
author_facet |
Fyke, Jeremy Lenaerts, Jan T. M. Wang, Hailong |
author_sort |
Fyke, Jeremy |
title |
Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability |
title_short |
Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability |
title_full |
Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability |
title_fullStr |
Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability |
title_full_unstemmed |
Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability |
title_sort |
basin-scale heterogeneity in antarctic precipitation and its impact on surface mass variability |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-11-2595-2017 https://tc.copernicus.org/articles/11/2595/2017/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-11-2595-2017 https://tc.copernicus.org/articles/11/2595/2017/ |
op_doi |
https://doi.org/10.5194/tc-11-2595-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
6 |
container_start_page |
2595 |
op_container_end_page |
2609 |
_version_ |
1766260315316551680 |