Relationship between the blowing snow frequency by ICESat-2 and wind speeds by AWS at Site NDF in western East Antarctica
Although a decrease in the overall mass of the Antarctic ice sheet has been reported since the 1990s, only the west of East Antarctica has reported an increase in mass since the mid-2000s, with the timing of extreme precipitation events. In the west of East Antarctica, four Automatic Weather Station...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5019851 2023-07-23T04:13:34+02:00 Relationship between the blowing snow frequency by ICESat-2 and wind speeds by AWS at Site NDF in western East Antarctica Sugiura, K. Hirasawa, N. 2023 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019851 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-3982 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019851 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-3982 2023-07-02T23:40:07Z Although a decrease in the overall mass of the Antarctic ice sheet has been reported since the 1990s, only the west of East Antarctica has reported an increase in mass since the mid-2000s, with the timing of extreme precipitation events. In the west of East Antarctica, four Automatic Weather Stations (AWSs) have been installed by the Japanese Antarctic Research Expedition along the elevation gradient. In this study, we focus on blowing snow process that affects the surface mass balance of the ice sheet in the west of East Antarctica, where mass gain has been reported. Blowing snow plays a role in redistributing snow once accumulated, and it is not yet clear how extreme snowfalls will be redistributed. We calculated the correlation coefficients between the wind speeds by the AWS installed near the top of the ice sheet and the blowing snow frequency at the same area by ICESat-2 (ATL17, Version 4) using data from January 2022 to July 2022. The results showed that the correlation coefficients were -0.17 (between the wind speeds and the 25 Hz high-rate blowing snow frequency), -0.23 (between the wind speeds and the 1 Hz low-rate blowing snow frequency), and +0.97 (between the 25 Hz high-rate blowing snow frequency and the 1 Hz low-rate blowing snow frequency). Little relationship was found between the wind speeds and the blowing snow frequency during this period. We plan to further investigate the presence of snowfall and snow surface conditions in the west of East Antarctica. Conference Object Antarc* Antarctic Antarctica East Antarctica Ice Sheet GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Antarctic East Antarctica The Antarctic |
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Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
Although a decrease in the overall mass of the Antarctic ice sheet has been reported since the 1990s, only the west of East Antarctica has reported an increase in mass since the mid-2000s, with the timing of extreme precipitation events. In the west of East Antarctica, four Automatic Weather Stations (AWSs) have been installed by the Japanese Antarctic Research Expedition along the elevation gradient. In this study, we focus on blowing snow process that affects the surface mass balance of the ice sheet in the west of East Antarctica, where mass gain has been reported. Blowing snow plays a role in redistributing snow once accumulated, and it is not yet clear how extreme snowfalls will be redistributed. We calculated the correlation coefficients between the wind speeds by the AWS installed near the top of the ice sheet and the blowing snow frequency at the same area by ICESat-2 (ATL17, Version 4) using data from January 2022 to July 2022. The results showed that the correlation coefficients were -0.17 (between the wind speeds and the 25 Hz high-rate blowing snow frequency), -0.23 (between the wind speeds and the 1 Hz low-rate blowing snow frequency), and +0.97 (between the 25 Hz high-rate blowing snow frequency and the 1 Hz low-rate blowing snow frequency). Little relationship was found between the wind speeds and the blowing snow frequency during this period. We plan to further investigate the presence of snowfall and snow surface conditions in the west of East Antarctica. |
format |
Conference Object |
author |
Sugiura, K. Hirasawa, N. |
spellingShingle |
Sugiura, K. Hirasawa, N. Relationship between the blowing snow frequency by ICESat-2 and wind speeds by AWS at Site NDF in western East Antarctica |
author_facet |
Sugiura, K. Hirasawa, N. |
author_sort |
Sugiura, K. |
title |
Relationship between the blowing snow frequency by ICESat-2 and wind speeds by AWS at Site NDF in western East Antarctica |
title_short |
Relationship between the blowing snow frequency by ICESat-2 and wind speeds by AWS at Site NDF in western East Antarctica |
title_full |
Relationship between the blowing snow frequency by ICESat-2 and wind speeds by AWS at Site NDF in western East Antarctica |
title_fullStr |
Relationship between the blowing snow frequency by ICESat-2 and wind speeds by AWS at Site NDF in western East Antarctica |
title_full_unstemmed |
Relationship between the blowing snow frequency by ICESat-2 and wind speeds by AWS at Site NDF in western East Antarctica |
title_sort |
relationship between the blowing snow frequency by icesat-2 and wind speeds by aws at site ndf in western east antarctica |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019851 |
geographic |
Antarctic East Antarctica The Antarctic |
geographic_facet |
Antarctic East Antarctica The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-3982 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019851 |
op_doi |
https://doi.org/10.57757/IUGG23-3982 |
_version_ |
1772180645471059968 |