Extreme events of snow grain size increase in East Antarctica and their relationship with meteorological conditions
International audience This study explores the seasonal variations in snow grain size on the East Antarctic Plateau, where dry metamorphism occurs, by using microwave radiometer observations from 2000 to 2022. Local meteorological conditions and large-scale atmospheric phenomena have been considered...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2024
|
Subjects: | |
Online Access: | https://hal.science/hal-04453189 https://hal.science/hal-04453189/document https://hal.science/hal-04453189/file/SMLLFPP2024.pdf https://doi.org/10.5194/tc-18-593-2024 |
id |
ftinsu:oai:HAL:hal-04453189v1 |
---|---|
record_format |
openpolar |
spelling |
ftinsu:oai:HAL:hal-04453189v1 2024-04-21T07:46:40+00:00 Extreme events of snow grain size increase in East Antarctica and their relationship with meteorological conditions Stefanini, Claudio Macelloni, Giovanni Leduc-Leballeur, Marion Favier, Vincent Pohl, Benjamin Picard, Ghislain Université de Venise Ca’ Foscari Institute of Applied Physics "Nello Carrara" (IFAC) National Research Council of Italy Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Centre de Recherches de Climatologie UMR Biogéosciences (CRC) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) ANR-20-CE01-0013,ARCA,Climatologie des rivières atmosphériques en Antarctique(2020) 2024 https://hal.science/hal-04453189 https://hal.science/hal-04453189/document https://hal.science/hal-04453189/file/SMLLFPP2024.pdf https://doi.org/10.5194/tc-18-593-2024 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-18-593-2024 hal-04453189 https://hal.science/hal-04453189 https://hal.science/hal-04453189/document https://hal.science/hal-04453189/file/SMLLFPP2024.pdf doi:10.5194/tc-18-593-2024 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-04453189 The Cryosphere, 2024, 18 (2), pp.593-608. ⟨10.5194/tc-18-593-2024⟩ [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2024 ftinsu https://doi.org/10.5194/tc-18-593-2024 2024-04-05T00:27:06Z International audience This study explores the seasonal variations in snow grain size on the East Antarctic Plateau, where dry metamorphism occurs, by using microwave radiometer observations from 2000 to 2022. Local meteorological conditions and large-scale atmospheric phenomena have been considered in order to explain some peculiar changes in the snow grains. We find that the highest ice divide is the region with the largest grain size in the summer, mainly because the wind speed is low. Moreover, some extreme grain size values with respect to the average (over +3σ) were identified. In these cases, the ERA5 reanalysis revealed a high-pressure blocking close to the onsets of the summer increase in the grain size. It channels moisture intrusions from the mid-latitudes, through atmospheric rivers that cause major snowfall events over the plateau. If conditions of weak wind and low temperature occur during the following weeks, dry snow metamorphism is facilitated, leading to grain growth. This determines anomalous high maximums of the snow grain size at the end of summer. These phenomena confirm the importance of moisture intrusion events in East Antarctica and their impact on the physical properties of the ice sheet surface, with a co-occurrence of atmospheric rivers and seasonal changes in the grain size with a significance of over 95 %. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet The Cryosphere Institut national des sciences de l'Univers: HAL-INSU The Cryosphere 18 2 593 608 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Stefanini, Claudio Macelloni, Giovanni Leduc-Leballeur, Marion Favier, Vincent Pohl, Benjamin Picard, Ghislain Extreme events of snow grain size increase in East Antarctica and their relationship with meteorological conditions |
topic_facet |
[SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience This study explores the seasonal variations in snow grain size on the East Antarctic Plateau, where dry metamorphism occurs, by using microwave radiometer observations from 2000 to 2022. Local meteorological conditions and large-scale atmospheric phenomena have been considered in order to explain some peculiar changes in the snow grains. We find that the highest ice divide is the region with the largest grain size in the summer, mainly because the wind speed is low. Moreover, some extreme grain size values with respect to the average (over +3σ) were identified. In these cases, the ERA5 reanalysis revealed a high-pressure blocking close to the onsets of the summer increase in the grain size. It channels moisture intrusions from the mid-latitudes, through atmospheric rivers that cause major snowfall events over the plateau. If conditions of weak wind and low temperature occur during the following weeks, dry snow metamorphism is facilitated, leading to grain growth. This determines anomalous high maximums of the snow grain size at the end of summer. These phenomena confirm the importance of moisture intrusion events in East Antarctica and their impact on the physical properties of the ice sheet surface, with a co-occurrence of atmospheric rivers and seasonal changes in the grain size with a significance of over 95 %. |
author2 |
Université de Venise Ca’ Foscari Institute of Applied Physics "Nello Carrara" (IFAC) National Research Council of Italy Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Centre de Recherches de Climatologie UMR Biogéosciences (CRC) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) ANR-20-CE01-0013,ARCA,Climatologie des rivières atmosphériques en Antarctique(2020) |
format |
Article in Journal/Newspaper |
author |
Stefanini, Claudio Macelloni, Giovanni Leduc-Leballeur, Marion Favier, Vincent Pohl, Benjamin Picard, Ghislain |
author_facet |
Stefanini, Claudio Macelloni, Giovanni Leduc-Leballeur, Marion Favier, Vincent Pohl, Benjamin Picard, Ghislain |
author_sort |
Stefanini, Claudio |
title |
Extreme events of snow grain size increase in East Antarctica and their relationship with meteorological conditions |
title_short |
Extreme events of snow grain size increase in East Antarctica and their relationship with meteorological conditions |
title_full |
Extreme events of snow grain size increase in East Antarctica and their relationship with meteorological conditions |
title_fullStr |
Extreme events of snow grain size increase in East Antarctica and their relationship with meteorological conditions |
title_full_unstemmed |
Extreme events of snow grain size increase in East Antarctica and their relationship with meteorological conditions |
title_sort |
extreme events of snow grain size increase in east antarctica and their relationship with meteorological conditions |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://hal.science/hal-04453189 https://hal.science/hal-04453189/document https://hal.science/hal-04453189/file/SMLLFPP2024.pdf https://doi.org/10.5194/tc-18-593-2024 |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-04453189 The Cryosphere, 2024, 18 (2), pp.593-608. ⟨10.5194/tc-18-593-2024⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-18-593-2024 hal-04453189 https://hal.science/hal-04453189 https://hal.science/hal-04453189/document https://hal.science/hal-04453189/file/SMLLFPP2024.pdf doi:10.5194/tc-18-593-2024 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-18-593-2024 |
container_title |
The Cryosphere |
container_volume |
18 |
container_issue |
2 |
container_start_page |
593 |
op_container_end_page |
608 |
_version_ |
1796944165491179520 |