Atmospheric River Climatology of Antarctica
International audience To properly understand the future Antarctic surface mass balance (SMB) requires a complete understanding of the factors that influence SMB today. Atmospheric rivers, broadly defined as a narrow yet long bands of high precipitable water, provide a sub-tropical connection to the...
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Language: | English |
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HAL CCSD
2019
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Online Access: | https://hal.science/hal-02402450 |
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ftunigrenoble:oai:HAL:hal-02402450v1 |
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openpolar |
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Open Polar |
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Université Grenoble Alpes: HAL |
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ftunigrenoble |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
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[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Wille, Jonathan Favier, Vincent Dufour, Ambroise Gorodetskaya, Irina, V Turner, John, R G Agosta, Cécile Codron, Francis Atmospheric River Climatology of Antarctica |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience To properly understand the future Antarctic surface mass balance (SMB) requires a complete understanding of the factors that influence SMB today. Atmospheric rivers, broadly defined as a narrow yet long bands of high precipitable water, provide a sub-tropical connection to the Antarctic continent and are observed to significantly impact the affected region's SMB over short, extreme events. Over coastal Dronning Maud Land, East Antarctica, Gorodetskaya et al. (2013) observed that 4-5 atmospheric rivers contributed to 74-80% of the region's SMB during 2009 and 2011. When an atmospheric river reaches the Antarctic continent, their signature is clearly observed in increased downward longwave radiation, cloud liquid water content, surface temperature, snowfall, surface melt, and moisture transport. Using an atmospheric river detection algorithm designed for Antarctica and applied to multiple reanalyses, we find that while atmospheric rivers that make landfall are a rare occurrence, they have had significant impacts on the SMB from 1979-2017. During the study period, atmospheric rivers to make landfall have the largest snowfall signature across Dronning Maud Laud where they account for nearly 40% of snowfall in some interior locations. In addition to snowfall, atmospheric rivers are responsible for a majority of the summer surface melt on interior portions of the Ross Ice Shelf and low elevation portions of Marie Byrd Land. Currently melt events across these regions are rare, however a slight surface temperature increase would on average lead to melting conditions when an atmospheric river makes landfall. Atmospheric rivers are also a crucial component of winter surface melting on the Wilkins, Bach, and Larsen ice shelves along the Antarctic Peninsula. Within most reanalyses, there is a small yet significant increase in atmospheric river activity from 1979-2017. Whether an atmospheric river reaches the Antarctic continent is dependent on the degree of upper-level atmospheric blocking. ... |
author2 |
Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) CESAM, Centre for Environmental and Marine Studies Universidade de Aveiro British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) EGU |
format |
Conference Object |
author |
Wille, Jonathan Favier, Vincent Dufour, Ambroise Gorodetskaya, Irina, V Turner, John, R G Agosta, Cécile Codron, Francis |
author_facet |
Wille, Jonathan Favier, Vincent Dufour, Ambroise Gorodetskaya, Irina, V Turner, John, R G Agosta, Cécile Codron, Francis |
author_sort |
Wille, Jonathan |
title |
Atmospheric River Climatology of Antarctica |
title_short |
Atmospheric River Climatology of Antarctica |
title_full |
Atmospheric River Climatology of Antarctica |
title_fullStr |
Atmospheric River Climatology of Antarctica |
title_full_unstemmed |
Atmospheric River Climatology of Antarctica |
title_sort |
atmospheric river climatology of antarctica |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02402450 |
op_coverage |
Vienna, Austria |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Dronning Maud Land East Antarctica Ice Shelf Ice Shelves Marie Byrd Land Ross Ice Shelf |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Dronning Maud Land East Antarctica Ice Shelf Ice Shelves Marie Byrd Land Ross Ice Shelf |
op_source |
21st EGU General Assembly https://hal.science/hal-02402450 21st EGU General Assembly, EGU, Apr 2019, Vienna, Austria |
op_relation |
hal-02402450 https://hal.science/hal-02402450 BIBCODE: 2019EGUGA.2116320W |
_version_ |
1799469401072730112 |
spelling |
ftunigrenoble:oai:HAL:hal-02402450v1 2024-05-19T07:31:33+00:00 Atmospheric River Climatology of Antarctica Wille, Jonathan Favier, Vincent Dufour, Ambroise Gorodetskaya, Irina, V Turner, John, R G Agosta, Cécile Codron, Francis Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) CESAM, Centre for Environmental and Marine Studies Universidade de Aveiro British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) EGU Vienna, Austria 2019-04-07 https://hal.science/hal-02402450 en eng HAL CCSD hal-02402450 https://hal.science/hal-02402450 BIBCODE: 2019EGUGA.2116320W 21st EGU General Assembly https://hal.science/hal-02402450 21st EGU General Assembly, EGU, Apr 2019, Vienna, Austria [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/conferenceObject Conference papers 2019 ftunigrenoble 2024-04-25T00:33:00Z International audience To properly understand the future Antarctic surface mass balance (SMB) requires a complete understanding of the factors that influence SMB today. Atmospheric rivers, broadly defined as a narrow yet long bands of high precipitable water, provide a sub-tropical connection to the Antarctic continent and are observed to significantly impact the affected region's SMB over short, extreme events. Over coastal Dronning Maud Land, East Antarctica, Gorodetskaya et al. (2013) observed that 4-5 atmospheric rivers contributed to 74-80% of the region's SMB during 2009 and 2011. When an atmospheric river reaches the Antarctic continent, their signature is clearly observed in increased downward longwave radiation, cloud liquid water content, surface temperature, snowfall, surface melt, and moisture transport. Using an atmospheric river detection algorithm designed for Antarctica and applied to multiple reanalyses, we find that while atmospheric rivers that make landfall are a rare occurrence, they have had significant impacts on the SMB from 1979-2017. During the study period, atmospheric rivers to make landfall have the largest snowfall signature across Dronning Maud Laud where they account for nearly 40% of snowfall in some interior locations. In addition to snowfall, atmospheric rivers are responsible for a majority of the summer surface melt on interior portions of the Ross Ice Shelf and low elevation portions of Marie Byrd Land. Currently melt events across these regions are rare, however a slight surface temperature increase would on average lead to melting conditions when an atmospheric river makes landfall. Atmospheric rivers are also a crucial component of winter surface melting on the Wilkins, Bach, and Larsen ice shelves along the Antarctic Peninsula. Within most reanalyses, there is a small yet significant increase in atmospheric river activity from 1979-2017. Whether an atmospheric river reaches the Antarctic continent is dependent on the degree of upper-level atmospheric blocking. ... Conference Object Antarc* Antarctic Antarctic Peninsula Antarctica Dronning Maud Land East Antarctica Ice Shelf Ice Shelves Marie Byrd Land Ross Ice Shelf Université Grenoble Alpes: HAL |