Synoptic and planetary-scale dynamics modulate antarctic atmospheric river precipitation intensity
International audience Although rare, atmospheric rivers substantially influence the interannual variability of Antarctic surface mass balance. Here we use MERRA-2 reanalysis to identify characteristics unique to atmospheric river environments by comparing (1) Analog (environments that feature high-...
Published in: | Communications Earth & Environment |
---|---|
Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2024
|
Subjects: | |
Online Access: | https://hal.science/hal-04505424 https://hal.science/hal-04505424v1/document https://hal.science/hal-04505424v1/file/BWPFWC2024.pdf https://doi.org/10.1038/s43247-024-01307-9 |
id |
ftanrparis:oai:HAL:hal-04505424v1 |
---|---|
record_format |
openpolar |
spelling |
ftanrparis:oai:HAL:hal-04505424v1 2024-10-13T14:03:09+00:00 Synoptic and planetary-scale dynamics modulate antarctic atmospheric river precipitation intensity Baiman, Rebecca Winters, Andrew, C Pohl, Benjamin Favier, Vincent Wille, Jonathan, D Clem, Kyle, R Department of Atmospheric and Oceanic Sciences Boulder (ATOC) University of Colorado Boulder 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) 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)-Observatoire des Sciences de l'Univers de Grenoble (Fédération OSUG)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP) Université Grenoble Alpes (UGA) Victoria University of Wellington ANR-20-CE01-0013,ARCA,Climatologie des rivières atmosphériques en Antarctique(2020) 2024 https://hal.science/hal-04505424 https://hal.science/hal-04505424v1/document https://hal.science/hal-04505424v1/file/BWPFWC2024.pdf https://doi.org/10.1038/s43247-024-01307-9 en eng HAL CCSD Springer Nature info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-024-01307-9 http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess ISSN: 2662-4435 Communications Earth & Environment https://hal.science/hal-04505424 Communications Earth & Environment, 2024, 5 (1), pp.127. ⟨10.1038/s43247-024-01307-9⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2024 ftanrparis https://doi.org/10.1038/s43247-024-01307-9 2024-09-26T14:18:41Z International audience Although rare, atmospheric rivers substantially influence the interannual variability of Antarctic surface mass balance. Here we use MERRA-2 reanalysis to identify characteristics unique to atmospheric river environments by comparing (1) Analog (environments that feature high-low pressure couplets, similar to Atmospheric River environments, but no Atmospheric River), (2) Atmospheric River, and (3) Top Atmospheric River (highest precipitation) timesteps during 1980–2019 around Antarctica. We find significant differences between Atmospheric River and Analog environments including more intense and poleward-shifted mid-tropospheric geopotential height couplets as well as larger atmospheric moisture anomalies. We find similar significant enhancement in synoptic-scale dynamic drivers of Top Atmospheric Rivers compared to all Atmospheric River environments, but no significant difference in local integrated water vapor anomalies. Instead, our results highlight the importance of large-scale dynamic drivers during Top Atmospheric River timesteps, including amplified Rossby waves excited by tropical convection. Article in Journal/Newspaper Antarc* Antarctic Antarctica Portail HAL-ANR (Agence Nationale de la Recherche) Antarctic Merra ENVELOPE(12.615,12.615,65.816,65.816) Communications Earth & Environment 5 1 |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Baiman, Rebecca Winters, Andrew, C Pohl, Benjamin Favier, Vincent Wille, Jonathan, D Clem, Kyle, R Synoptic and planetary-scale dynamics modulate antarctic atmospheric river precipitation intensity |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Although rare, atmospheric rivers substantially influence the interannual variability of Antarctic surface mass balance. Here we use MERRA-2 reanalysis to identify characteristics unique to atmospheric river environments by comparing (1) Analog (environments that feature high-low pressure couplets, similar to Atmospheric River environments, but no Atmospheric River), (2) Atmospheric River, and (3) Top Atmospheric River (highest precipitation) timesteps during 1980–2019 around Antarctica. We find significant differences between Atmospheric River and Analog environments including more intense and poleward-shifted mid-tropospheric geopotential height couplets as well as larger atmospheric moisture anomalies. We find similar significant enhancement in synoptic-scale dynamic drivers of Top Atmospheric Rivers compared to all Atmospheric River environments, but no significant difference in local integrated water vapor anomalies. Instead, our results highlight the importance of large-scale dynamic drivers during Top Atmospheric River timesteps, including amplified Rossby waves excited by tropical convection. |
author2 |
Department of Atmospheric and Oceanic Sciences Boulder (ATOC) University of Colorado Boulder 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) 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)-Observatoire des Sciences de l'Univers de Grenoble (Fédération OSUG)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP) Université Grenoble Alpes (UGA) Victoria University of Wellington ANR-20-CE01-0013,ARCA,Climatologie des rivières atmosphériques en Antarctique(2020) |
format |
Article in Journal/Newspaper |
author |
Baiman, Rebecca Winters, Andrew, C Pohl, Benjamin Favier, Vincent Wille, Jonathan, D Clem, Kyle, R |
author_facet |
Baiman, Rebecca Winters, Andrew, C Pohl, Benjamin Favier, Vincent Wille, Jonathan, D Clem, Kyle, R |
author_sort |
Baiman, Rebecca |
title |
Synoptic and planetary-scale dynamics modulate antarctic atmospheric river precipitation intensity |
title_short |
Synoptic and planetary-scale dynamics modulate antarctic atmospheric river precipitation intensity |
title_full |
Synoptic and planetary-scale dynamics modulate antarctic atmospheric river precipitation intensity |
title_fullStr |
Synoptic and planetary-scale dynamics modulate antarctic atmospheric river precipitation intensity |
title_full_unstemmed |
Synoptic and planetary-scale dynamics modulate antarctic atmospheric river precipitation intensity |
title_sort |
synoptic and planetary-scale dynamics modulate antarctic atmospheric river precipitation intensity |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://hal.science/hal-04505424 https://hal.science/hal-04505424v1/document https://hal.science/hal-04505424v1/file/BWPFWC2024.pdf https://doi.org/10.1038/s43247-024-01307-9 |
long_lat |
ENVELOPE(12.615,12.615,65.816,65.816) |
geographic |
Antarctic Merra |
geographic_facet |
Antarctic Merra |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
ISSN: 2662-4435 Communications Earth & Environment https://hal.science/hal-04505424 Communications Earth & Environment, 2024, 5 (1), pp.127. ⟨10.1038/s43247-024-01307-9⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-024-01307-9 |
op_rights |
http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s43247-024-01307-9 |
container_title |
Communications Earth & Environment |
container_volume |
5 |
container_issue |
1 |
_version_ |
1812819573178630144 |