A Multidecadal Analysis of Föhn Winds over Larsen C Ice Shelf from a Combination of Observations and Modeling
The southward progression of ice shelf collapse in the Antarctic Peninsula is partially attributed to a strengthening of the circumpolar westerlies and the associated increase in föhn conditions over its eastern ice shelves. We used observations from an automatic weather station at Cabinet Inlet on...
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ftmdpi:oai:mdpi.com:/2073-4433/9/5/172/ 2023-08-20T03:59:36+02:00 A Multidecadal Analysis of Föhn Winds over Larsen C Ice Shelf from a Combination of Observations and Modeling Jasper M. Wiesenekker Peter Kuipers Munneke Michiel R. Van den Broeke C. J. P. Paul Smeets agris 2018-05-05 application/pdf https://doi.org/10.3390/atmos9050172 EN eng Multidisciplinary Digital Publishing Institute Meteorology https://dx.doi.org/10.3390/atmos9050172 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 9; Issue 5; Pages: 172 Föhn Antarctic Peninsula Larsen ice shelf multidecadal analysis automatic weather station regional climate model Text 2018 ftmdpi https://doi.org/10.3390/atmos9050172 2023-07-31T21:30:24Z The southward progression of ice shelf collapse in the Antarctic Peninsula is partially attributed to a strengthening of the circumpolar westerlies and the associated increase in föhn conditions over its eastern ice shelves. We used observations from an automatic weather station at Cabinet Inlet on the northern Larsen C ice shelf between 25 November 2014 and 31 December 2016 to describe föhn dynamics. Observed föhn frequency was compared to the latest version of the regional climate model RACMO2.3p2, run over the Antarctic Peninsula at 5.5-km horizontal resolution. A föhn identification scheme based on observed wind conditions was employed to check for model biases in föhn representation. Seasonal variation in total föhn event duration was resolved with sufficient skill. The analysis was extended to the model period (1979–2016) to obtain a multidecadal perspective of föhn occurrence over Larsen C ice shelf. Föhn occurrence at Cabinet Inlet strongly correlates with near-surface air temperature, and both are found to relate strongly to the location and strength of the Amundsen Sea Low. Furthermore, we demonstrated that föhn occurrence over Larsen C ice shelf shows high variability in space and time. Text Amundsen Sea Antarc* Antarctic Antarctic Peninsula Ice Shelf Ice Shelves Larsen Ice Shelf MDPI Open Access Publishing Antarctic The Antarctic Antarctic Peninsula Amundsen Sea Larsen Ice Shelf ENVELOPE(-62.500,-62.500,-67.500,-67.500) Cabinet Inlet ENVELOPE(-63.500,-63.500,-66.250,-66.250) Atmosphere 9 5 172 |
institution |
Open Polar |
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MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Föhn Antarctic Peninsula Larsen ice shelf multidecadal analysis automatic weather station regional climate model |
spellingShingle |
Föhn Antarctic Peninsula Larsen ice shelf multidecadal analysis automatic weather station regional climate model Jasper M. Wiesenekker Peter Kuipers Munneke Michiel R. Van den Broeke C. J. P. Paul Smeets A Multidecadal Analysis of Föhn Winds over Larsen C Ice Shelf from a Combination of Observations and Modeling |
topic_facet |
Föhn Antarctic Peninsula Larsen ice shelf multidecadal analysis automatic weather station regional climate model |
description |
The southward progression of ice shelf collapse in the Antarctic Peninsula is partially attributed to a strengthening of the circumpolar westerlies and the associated increase in föhn conditions over its eastern ice shelves. We used observations from an automatic weather station at Cabinet Inlet on the northern Larsen C ice shelf between 25 November 2014 and 31 December 2016 to describe föhn dynamics. Observed föhn frequency was compared to the latest version of the regional climate model RACMO2.3p2, run over the Antarctic Peninsula at 5.5-km horizontal resolution. A föhn identification scheme based on observed wind conditions was employed to check for model biases in föhn representation. Seasonal variation in total föhn event duration was resolved with sufficient skill. The analysis was extended to the model period (1979–2016) to obtain a multidecadal perspective of föhn occurrence over Larsen C ice shelf. Föhn occurrence at Cabinet Inlet strongly correlates with near-surface air temperature, and both are found to relate strongly to the location and strength of the Amundsen Sea Low. Furthermore, we demonstrated that föhn occurrence over Larsen C ice shelf shows high variability in space and time. |
format |
Text |
author |
Jasper M. Wiesenekker Peter Kuipers Munneke Michiel R. Van den Broeke C. J. P. Paul Smeets |
author_facet |
Jasper M. Wiesenekker Peter Kuipers Munneke Michiel R. Van den Broeke C. J. P. Paul Smeets |
author_sort |
Jasper M. Wiesenekker |
title |
A Multidecadal Analysis of Föhn Winds over Larsen C Ice Shelf from a Combination of Observations and Modeling |
title_short |
A Multidecadal Analysis of Föhn Winds over Larsen C Ice Shelf from a Combination of Observations and Modeling |
title_full |
A Multidecadal Analysis of Föhn Winds over Larsen C Ice Shelf from a Combination of Observations and Modeling |
title_fullStr |
A Multidecadal Analysis of Föhn Winds over Larsen C Ice Shelf from a Combination of Observations and Modeling |
title_full_unstemmed |
A Multidecadal Analysis of Föhn Winds over Larsen C Ice Shelf from a Combination of Observations and Modeling |
title_sort |
multidecadal analysis of föhn winds over larsen c ice shelf from a combination of observations and modeling |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2018 |
url |
https://doi.org/10.3390/atmos9050172 |
op_coverage |
agris |
long_lat |
ENVELOPE(-62.500,-62.500,-67.500,-67.500) ENVELOPE(-63.500,-63.500,-66.250,-66.250) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Amundsen Sea Larsen Ice Shelf Cabinet Inlet |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Amundsen Sea Larsen Ice Shelf Cabinet Inlet |
genre |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Ice Shelf Ice Shelves Larsen Ice Shelf |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Ice Shelf Ice Shelves Larsen Ice Shelf |
op_source |
Atmosphere; Volume 9; Issue 5; Pages: 172 |
op_relation |
Meteorology https://dx.doi.org/10.3390/atmos9050172 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/atmos9050172 |
container_title |
Atmosphere |
container_volume |
9 |
container_issue |
5 |
container_start_page |
172 |
_version_ |
1774713695190908928 |