Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica
International audience During the austral summer 2019/2020, three vertically pointing K-band Doppler profilers (Micro Rain Radar PRO, MRR-PRO) were deployed along a transect across the Sør Rondane Mountains, directly south of the scientific base Princess Elisabeth Antarctica. The MRR-PRO devices wer...
Published in: | The Cryosphere |
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ftecoleponts:oai:HAL:insu-04472086v1 2024-06-09T07:39:18+00:00 Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica Ferrone, Alfonso Vignon, Étienne Zonato, Andrea Berne, Alexis Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) 2023 https://insu.hal.science/insu-04472086 https://insu.hal.science/insu-04472086/document https://insu.hal.science/insu-04472086/file/tc-17-4937-2023.pdf https://doi.org/10.5194/tc-17-4937-2023 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-17-4937-2023 insu-04472086 https://insu.hal.science/insu-04472086 https://insu.hal.science/insu-04472086/document https://insu.hal.science/insu-04472086/file/tc-17-4937-2023.pdf BIBCODE: 2023TCry.17.4937F doi:10.5194/tc-17-4937-2023 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://insu.hal.science/insu-04472086 The Cryosphere, 2023, 17, pp.4937-4956. ⟨10.5194/tc-17-4937-2023⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2023 ftecoleponts https://doi.org/10.5194/tc-17-4937-2023 2024-05-16T12:09:58Z International audience During the austral summer 2019/2020, three vertically pointing K-band Doppler profilers (Micro Rain Radar PRO, MRR-PRO) were deployed along a transect across the Sør Rondane Mountains, directly south of the scientific base Princess Elisabeth Antarctica. The MRR-PRO devices were placed at locations corresponding to different stages of the interaction between the complex terrain and the typical flow associated with precipitating systems. The radar measurements, alongside information from the ERA5 reanalysis and a set of high-resolution Weather Research and Forecasting (WRF) simulations, have been used to study the spatial variability in snowfall across the transect. Radar observations reveal differences in the frequency of occurrence of virga and surface precipitation above the transect. An analysis of the WRF outputs reveals the presence of a relatively dry layer above the radar locations, reaching a constant altitude of 3.5 km above mean sea level. Due to the complex terrain, the depth of the layer varies across the transect, affecting sublimation and the occurrence of virgae. Combined information from the ERA5 reanalysis, the WRF simulations, and ground-level measurements suggests that orographic lifting enhances precipitation above the highest mountain peaks. Finally, the analysis of the succession of virga and surface precipitation above the sites shows that, in most cases, they represent different stages of the same large-scale events. This study reveals the significant spatial variability in the occurrence of precipitation in a region of complex terrain, emphasizing the importance of collecting snowfall measurements in the mountainous regions of the Antarctic continent. Article in Journal/Newspaper Antarc* Antarctic Antarctica The Cryosphere École des Ponts ParisTech: HAL Antarctic Austral Sør Rondane Mountains ENVELOPE(25.000,25.000,-72.000,-72.000) Sør-Rondane ENVELOPE(25.000,25.000,-72.000,-72.000) The Antarctic The Cryosphere 17 11 4937 4956 |
institution |
Open Polar |
collection |
École des Ponts ParisTech: HAL |
op_collection_id |
ftecoleponts |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Ferrone, Alfonso Vignon, Étienne Zonato, Andrea Berne, Alexis Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience During the austral summer 2019/2020, three vertically pointing K-band Doppler profilers (Micro Rain Radar PRO, MRR-PRO) were deployed along a transect across the Sør Rondane Mountains, directly south of the scientific base Princess Elisabeth Antarctica. The MRR-PRO devices were placed at locations corresponding to different stages of the interaction between the complex terrain and the typical flow associated with precipitating systems. The radar measurements, alongside information from the ERA5 reanalysis and a set of high-resolution Weather Research and Forecasting (WRF) simulations, have been used to study the spatial variability in snowfall across the transect. Radar observations reveal differences in the frequency of occurrence of virga and surface precipitation above the transect. An analysis of the WRF outputs reveals the presence of a relatively dry layer above the radar locations, reaching a constant altitude of 3.5 km above mean sea level. Due to the complex terrain, the depth of the layer varies across the transect, affecting sublimation and the occurrence of virgae. Combined information from the ERA5 reanalysis, the WRF simulations, and ground-level measurements suggests that orographic lifting enhances precipitation above the highest mountain peaks. Finally, the analysis of the succession of virga and surface precipitation above the sites shows that, in most cases, they represent different stages of the same large-scale events. This study reveals the significant spatial variability in the occurrence of precipitation in a region of complex terrain, emphasizing the importance of collecting snowfall measurements in the mountainous regions of the Antarctic continent. |
author2 |
Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) |
format |
Article in Journal/Newspaper |
author |
Ferrone, Alfonso Vignon, Étienne Zonato, Andrea Berne, Alexis |
author_facet |
Ferrone, Alfonso Vignon, Étienne Zonato, Andrea Berne, Alexis |
author_sort |
Ferrone, Alfonso |
title |
Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica |
title_short |
Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica |
title_full |
Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica |
title_fullStr |
Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica |
title_full_unstemmed |
Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica |
title_sort |
local spatial variability in the occurrence of summer precipitation in the sør rondane mountains, antarctica |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://insu.hal.science/insu-04472086 https://insu.hal.science/insu-04472086/document https://insu.hal.science/insu-04472086/file/tc-17-4937-2023.pdf https://doi.org/10.5194/tc-17-4937-2023 |
long_lat |
ENVELOPE(25.000,25.000,-72.000,-72.000) ENVELOPE(25.000,25.000,-72.000,-72.000) |
geographic |
Antarctic Austral Sør Rondane Mountains Sør-Rondane The Antarctic |
geographic_facet |
Antarctic Austral Sør Rondane Mountains Sør-Rondane The Antarctic |
genre |
Antarc* Antarctic Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://insu.hal.science/insu-04472086 The Cryosphere, 2023, 17, pp.4937-4956. ⟨10.5194/tc-17-4937-2023⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-17-4937-2023 insu-04472086 https://insu.hal.science/insu-04472086 https://insu.hal.science/insu-04472086/document https://insu.hal.science/insu-04472086/file/tc-17-4937-2023.pdf BIBCODE: 2023TCry.17.4937F doi:10.5194/tc-17-4937-2023 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-17-4937-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
11 |
container_start_page |
4937 |
op_container_end_page |
4956 |
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1801378604332875776 |