Radar-derived snowfall microphysical properties at Davis, Antarctica ...
<!--!introduction!--> Antarctic precipitation remains poorly characterised and understood, especially within the boundary layer. This is due in part to a still-limited amount of surface-based remote sensing observations. A suite of cloud and precipitation remote-sensing instruments including a...
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GFZ German Research Centre for Geosciences
2023
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ftdatacite:10.57757/iugg23-0048 2023-06-11T04:06:48+02:00 Radar-derived snowfall microphysical properties at Davis, Antarctica ... Alexander, Simon Protat, Alain Berne, Alexis Ackermann, Luis 2023 https://dx.doi.org/10.57757/iugg23-0048 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017047 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 ConferencePaper Oral Article 2023 ftdatacite https://doi.org/10.57757/iugg23-0048 2023-06-01T11:29:44Z <!--!introduction!--> Antarctic precipitation remains poorly characterised and understood, especially within the boundary layer. This is due in part to a still-limited amount of surface-based remote sensing observations. A suite of cloud and precipitation remote-sensing instruments including a W-band cloud radar and a K-band Micro Rain Radar (MRR) were used to characterise snowfall over Davis (69S, 78E). Surface snowfall events occurred when boundary layer wind speeds were weaker, temperatures were warmer, and relative humidity over ice higher, than when virga were present. The presence of virga is associated with Fohn conditions due to the location of Davis in the lee of an ice ridgeline. Dual wavelength ratio values from the summer indicate particle aggregation at temperatures of -14C to -10C, consistent with observations made elsewhere, including in the Arctic. In-cloud updrafts were stronger in summer than in winter at these temperatures. Larger downward velocities and the presence of super-cooled ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Conference Object Antarc* Antarctic Antarctica Arctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Arctic |
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DataCite Metadata Store (German National Library of Science and Technology) |
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<!--!introduction!--> Antarctic precipitation remains poorly characterised and understood, especially within the boundary layer. This is due in part to a still-limited amount of surface-based remote sensing observations. A suite of cloud and precipitation remote-sensing instruments including a W-band cloud radar and a K-band Micro Rain Radar (MRR) were used to characterise snowfall over Davis (69S, 78E). Surface snowfall events occurred when boundary layer wind speeds were weaker, temperatures were warmer, and relative humidity over ice higher, than when virga were present. The presence of virga is associated with Fohn conditions due to the location of Davis in the lee of an ice ridgeline. Dual wavelength ratio values from the summer indicate particle aggregation at temperatures of -14C to -10C, consistent with observations made elsewhere, including in the Arctic. In-cloud updrafts were stronger in summer than in winter at these temperatures. Larger downward velocities and the presence of super-cooled ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Conference Object |
author |
Alexander, Simon Protat, Alain Berne, Alexis Ackermann, Luis |
spellingShingle |
Alexander, Simon Protat, Alain Berne, Alexis Ackermann, Luis Radar-derived snowfall microphysical properties at Davis, Antarctica ... |
author_facet |
Alexander, Simon Protat, Alain Berne, Alexis Ackermann, Luis |
author_sort |
Alexander, Simon |
title |
Radar-derived snowfall microphysical properties at Davis, Antarctica ... |
title_short |
Radar-derived snowfall microphysical properties at Davis, Antarctica ... |
title_full |
Radar-derived snowfall microphysical properties at Davis, Antarctica ... |
title_fullStr |
Radar-derived snowfall microphysical properties at Davis, Antarctica ... |
title_full_unstemmed |
Radar-derived snowfall microphysical properties at Davis, Antarctica ... |
title_sort |
radar-derived snowfall microphysical properties at davis, antarctica ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-0048 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017047 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Antarctica Arctic |
genre_facet |
Antarc* Antarctic Antarctica Arctic |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.57757/iugg23-0048 |
_version_ |
1768378947027861504 |