The meteorological drivers of elevated surface melt over the grounding zone of Roi Baudouin Ice Shelf
In East Antarctica, melt maxima observed near ice-shelf grounding lines have been attributed to katabatic winds. Despite being a characteristically cool, dense airflow, this wind is responsible for warm-air anomalies along the Antarctic coastline due to disruption of the surface temperature inversio...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5018471 2023-07-02T03:30:38+02:00 The meteorological drivers of elevated surface melt over the grounding zone of Roi Baudouin Ice Shelf Elvidge, A. 2023 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018471 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-2293 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018471 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-2293 2023-06-11T23:39:57Z In East Antarctica, melt maxima observed near ice-shelf grounding lines have been attributed to katabatic winds. Despite being a characteristically cool, dense airflow, this wind is responsible for warm-air anomalies along the Antarctic coastline due to disruption of the surface temperature inversion that typically pervades here. However, this offers an incomplete explanation for the large local amplifications in melt observed (such as a doubling for Roi Baudouin Ice Shelf), implying that a true mechanistic understanding of how downslope flows mediate air temperatures and melt at the foot of the Antarctic plateau is lacking. Here, we use ground observations from AWS located on and upstream of Roi Baudouin Ice Shelf in tandem with atmospheric reanalysis data to identify the meteorological regimes responsible for this melt, and to explain the physical mechanisms by which these regimes deliver heat to the ice shelf. Conference Object Antarc* Antarctic Antarctica East Antarctica Ice Shelf GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Antarctic The Antarctic East Antarctica Roi Baudouin ENVELOPE(24.461,24.461,-70.438,-70.438) |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
In East Antarctica, melt maxima observed near ice-shelf grounding lines have been attributed to katabatic winds. Despite being a characteristically cool, dense airflow, this wind is responsible for warm-air anomalies along the Antarctic coastline due to disruption of the surface temperature inversion that typically pervades here. However, this offers an incomplete explanation for the large local amplifications in melt observed (such as a doubling for Roi Baudouin Ice Shelf), implying that a true mechanistic understanding of how downslope flows mediate air temperatures and melt at the foot of the Antarctic plateau is lacking. Here, we use ground observations from AWS located on and upstream of Roi Baudouin Ice Shelf in tandem with atmospheric reanalysis data to identify the meteorological regimes responsible for this melt, and to explain the physical mechanisms by which these regimes deliver heat to the ice shelf. |
format |
Conference Object |
author |
Elvidge, A. |
spellingShingle |
Elvidge, A. The meteorological drivers of elevated surface melt over the grounding zone of Roi Baudouin Ice Shelf |
author_facet |
Elvidge, A. |
author_sort |
Elvidge, A. |
title |
The meteorological drivers of elevated surface melt over the grounding zone of Roi Baudouin Ice Shelf |
title_short |
The meteorological drivers of elevated surface melt over the grounding zone of Roi Baudouin Ice Shelf |
title_full |
The meteorological drivers of elevated surface melt over the grounding zone of Roi Baudouin Ice Shelf |
title_fullStr |
The meteorological drivers of elevated surface melt over the grounding zone of Roi Baudouin Ice Shelf |
title_full_unstemmed |
The meteorological drivers of elevated surface melt over the grounding zone of Roi Baudouin Ice Shelf |
title_sort |
meteorological drivers of elevated surface melt over the grounding zone of roi baudouin ice shelf |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018471 |
long_lat |
ENVELOPE(24.461,24.461,-70.438,-70.438) |
geographic |
Antarctic The Antarctic East Antarctica Roi Baudouin |
geographic_facet |
Antarctic The Antarctic East Antarctica Roi Baudouin |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Shelf |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Shelf |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-2293 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018471 |
op_doi |
https://doi.org/10.57757/IUGG23-2293 |
_version_ |
1770274826606346240 |