Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis
This study uses a set of 37 firn core records over the West Antarctic Ice Sheet (WAIS) to test the performance of ERA-20C reanalysis for snow accumulation and quantify temporal variability in snow accumulation since 1900. The firn cores are allocated to four geographical areas demarcated by drainage...
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American Geophysical Union
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ftnerc:oai:nora.nerc.ac.uk:518353 2023-05-15T13:24:05+02:00 Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis Wang, Yetang Thomas, Elizabeth R. Hou, Shugui Huai, Baojuan Wu, Shuangye Sun, Weijun Qi, Shanzhong Ding, Minghu Zhang, Yulun 2017-11-28 text http://nora.nerc.ac.uk/id/eprint/518353/ https://nora.nerc.ac.uk/id/eprint/518353/1/Wang_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL075135 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/518353/1/Wang_et_al-2017-Geophysical_Research_Letters.pdf Wang, Yetang; Thomas, Elizabeth R. orcid:0000-0002-3010-6493 Hou, Shugui; Huai, Baojuan; Wu, Shuangye; Sun, Weijun; Qi, Shanzhong; Ding, Minghu; Zhang, Yulun. 2017 Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis. Geophysical Research Letters, 44 (22). 11,482-11,490. https://doi.org/10.1002/2017GL075135 <https://doi.org/10.1002/2017GL075135> Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.1002/2017GL075135 2023-02-04T19:45:35Z This study uses a set of 37 firn core records over the West Antarctic Ice Sheet (WAIS) to test the performance of ERA-20C reanalysis for snow accumulation and quantify temporal variability in snow accumulation since 1900. The firn cores are allocated to four geographical areas demarcated by drainage divides (i.e., Antarctic Peninsula (AP), western WAIS, central WAIS and eastern WAIS) to calculate stacked records of regional snow accumulation. Our results show that the inter-annual variability in ERA-20C precipitation minus evaporation (P-E) agrees well with the corresponding ice core snow accumulation composites in each of the four geographical regions, suggesting its skill for simulating snow accumulation changes before the modern satellite era (pre-1979). Snow accumulation experiences significantly positive trends for the AP and eastern WAIS, a negative trend for the western WAIS, and no significant trend for the central WAIS from 1900 to 2010. The contrasting trends are associated with changes in the large-scale moisture transport driven by a deepening of the low-pressure systems and anomalies of sea ice in the Amundsen Sea Low (ASL) region. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctic Peninsula ice core Ice Sheet Sea ice Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Amundsen Sea West Antarctic Ice Sheet Geophysical Research Letters 44 22 11,482 11,490 |
institution |
Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
This study uses a set of 37 firn core records over the West Antarctic Ice Sheet (WAIS) to test the performance of ERA-20C reanalysis for snow accumulation and quantify temporal variability in snow accumulation since 1900. The firn cores are allocated to four geographical areas demarcated by drainage divides (i.e., Antarctic Peninsula (AP), western WAIS, central WAIS and eastern WAIS) to calculate stacked records of regional snow accumulation. Our results show that the inter-annual variability in ERA-20C precipitation minus evaporation (P-E) agrees well with the corresponding ice core snow accumulation composites in each of the four geographical regions, suggesting its skill for simulating snow accumulation changes before the modern satellite era (pre-1979). Snow accumulation experiences significantly positive trends for the AP and eastern WAIS, a negative trend for the western WAIS, and no significant trend for the central WAIS from 1900 to 2010. The contrasting trends are associated with changes in the large-scale moisture transport driven by a deepening of the low-pressure systems and anomalies of sea ice in the Amundsen Sea Low (ASL) region. |
format |
Article in Journal/Newspaper |
author |
Wang, Yetang Thomas, Elizabeth R. Hou, Shugui Huai, Baojuan Wu, Shuangye Sun, Weijun Qi, Shanzhong Ding, Minghu Zhang, Yulun |
spellingShingle |
Wang, Yetang Thomas, Elizabeth R. Hou, Shugui Huai, Baojuan Wu, Shuangye Sun, Weijun Qi, Shanzhong Ding, Minghu Zhang, Yulun Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis |
author_facet |
Wang, Yetang Thomas, Elizabeth R. Hou, Shugui Huai, Baojuan Wu, Shuangye Sun, Weijun Qi, Shanzhong Ding, Minghu Zhang, Yulun |
author_sort |
Wang, Yetang |
title |
Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis |
title_short |
Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis |
title_full |
Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis |
title_fullStr |
Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis |
title_full_unstemmed |
Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis |
title_sort |
snow accumulation variability over the west antarctic ice sheet since 1900: a comparison of ice core records with era-20c reanalysis |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/518353/ https://nora.nerc.ac.uk/id/eprint/518353/1/Wang_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL075135 |
geographic |
Antarctic Antarctic Peninsula Amundsen Sea West Antarctic Ice Sheet |
geographic_facet |
Antarctic Antarctic Peninsula Amundsen Sea West Antarctic Ice Sheet |
genre |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula ice core Ice Sheet Sea ice |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula ice core Ice Sheet Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/518353/1/Wang_et_al-2017-Geophysical_Research_Letters.pdf Wang, Yetang; Thomas, Elizabeth R. orcid:0000-0002-3010-6493 Hou, Shugui; Huai, Baojuan; Wu, Shuangye; Sun, Weijun; Qi, Shanzhong; Ding, Minghu; Zhang, Yulun. 2017 Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis. Geophysical Research Letters, 44 (22). 11,482-11,490. https://doi.org/10.1002/2017GL075135 <https://doi.org/10.1002/2017GL075135> |
op_doi |
https://doi.org/10.1002/2017GL075135 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
22 |
container_start_page |
11,482 |
op_container_end_page |
11,490 |
_version_ |
1766377327842820096 |