The Extraordinary March 2022 East Antarctica "Heat" Wave. Part II: Impacts on the Antarctic Ice Sheet
Jonathan D Wille
(1)
,
Simon P Alexander
(2)
,
Charles Amory
(1)
,
Rebecca Baiman
(3)
,
Léonard Barthélemy
(4)
,
Dana M Bergstrom
(2)
,
Alexis Berne
(5)
,
Hanin Binder
(6, 7)
,
J Blanchet
(1)
,
Deniz Bozkurt
(8)
,
Thomas J Bracegirdle
(9)
,
Mathieu Casado
(10)
,
Taejin Choi
(11)
,
Kyle R Clem
(12)
,
Francis Codron
(4)
,
Rajashree Datta
(2)
,
Stefano Di Battista
(13)
,
Vincent Favier
(1)
,
Diana Francis
(14)
,
Alexander D Fraser
(15)
,
Elise Fourré
(10, 16)
,
René D Garreaud
(17)
,
Christophe Genthon
(7)
,
Irina V Gorodetskaya
(18)
,
Sergi González-Herrero
(19, 20)
,
Victoria J Heinrich
(21)
,
Guillaume Hubert
(22)
,
Hanna Joos
(6)
,
Seong-Joong Kim
(11)
,
John C King
(23)
,
Christoph Kittel
(1)
,
Amaelle Landais
(10, 16)
,
Matthew Lazzara
(24)
,
Gregory H Leonard
(25)
,
Jan L Lieser
(15)
,
Michelle Maclennan
(3)
,
David Mikolajczyk
(24)
,
Peter Neff
(26)
,
Inès Ollivier
(27, 10)
,
Ghislain Picard
(1)
,
Benjamin Pohl
(28, 29, 30, 31)
,
F. Martin Ralph
(32)
,
Penny Rowe
(33)
,
Elisabeth Schlosser
(34)
,
Christine A Shields
(35)
,
Inga J Smith
(25)
,
Michael Sprenger
(6)
,
Luke Trusel
(36)
,
Danielle Udy
(15, 37)
,
Tessa Vance
(15)
,
Étienne Vignon
(7)
,
Catherine Walker
(38)
,
Nander Wever
(39, 40)
,
Xun Zou
(32)
1
IGE -
Institut des Géosciences de l’Environnement
2 Loyola University [Chicago]
3 ATOC - Department of Atmospheric and Oceanic Sciences [Boulder]
4 LOCEAN-VARCLIM - Océan et variabilité du climat
5 EPFL - Ecole Polytechnique Fédérale de Lausanne
6 IAC - Institute for Atmospheric and Climate Science [Zürich]
7 LMD - Laboratoire de Météorologie Dynamique (UMR 8539)
8 Universidad de Valparaiso [Chile]
9 BAS - British Antarctic Survey
10 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
11 KOPRI - Korea Polar Research Institute
12 Victoria University of Wellington
13 Meteogiornale
14 ENGEOS Lab - Environmental and Geophysical Sciences Lab
15 IMAS - Institute for Marine and Antarctic Studies [Hobart]
16 GLACCIOS - Glaces et Continents, Climats et Isotopes Stables
17 Departamento de Geofísica [Santiago]
18 CESAM - Centre for Environmental and Marine Studies [Aveiro]
19 SLF - SLF Institut pour l'étude de la neige et des avalanches
20 AEMet - Agencia Estatal de Meteorología
21 UTAS - University of Tasmania [Hobart]
22 DPHY, ONERA, Université de Toulouse [Toulouse]
23 URI - University of Rhode Island
24 SSEC - Space Science and Engineering Center [Madison]
25 University of Otago [Dunedin, Nouvelle-Zélande]
26 UMN - University of Minnesota [Twin Cities]
27 BCCR - Bjerknes Centre for Climate Research
28 BGS - Biogéosciences [UMR 6282]
29 CRC - Centre de Recherches de Climatologie [UMR Biogéosciences]
30 UB - Université de Bourgogne
31 CNRS - Centre National de la Recherche Scientifique
32 SIO - UC San Diego - Scripps Institution of Oceanography
33 NWRA - NorthWest Research Associates
34 Universität Innsbruck [Innsbruck]
35 NCAR - National Center for Atmospheric Research [Boulder]
36 Penn State - Pennsylvania State University
37 ARC Centre of Excellence for Climate Extremes
38 WHOI - Department of Marine Chemistry and Geochemistry
39 University of Colorado [Boulder]
40 WSL - WSL Institute for Snow and Avalanche Research SLF [Davos]
2 Loyola University [Chicago]
3 ATOC - Department of Atmospheric and Oceanic Sciences [Boulder]
4 LOCEAN-VARCLIM - Océan et variabilité du climat
5 EPFL - Ecole Polytechnique Fédérale de Lausanne
6 IAC - Institute for Atmospheric and Climate Science [Zürich]
7 LMD - Laboratoire de Météorologie Dynamique (UMR 8539)
8 Universidad de Valparaiso [Chile]
9 BAS - British Antarctic Survey
10 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
11 KOPRI - Korea Polar Research Institute
12 Victoria University of Wellington
13 Meteogiornale
14 ENGEOS Lab - Environmental and Geophysical Sciences Lab
15 IMAS - Institute for Marine and Antarctic Studies [Hobart]
16 GLACCIOS - Glaces et Continents, Climats et Isotopes Stables
17 Departamento de Geofísica [Santiago]
18 CESAM - Centre for Environmental and Marine Studies [Aveiro]
19 SLF - SLF Institut pour l'étude de la neige et des avalanches
20 AEMet - Agencia Estatal de Meteorología
21 UTAS - University of Tasmania [Hobart]
22 DPHY, ONERA, Université de Toulouse [Toulouse]
23 URI - University of Rhode Island
24 SSEC - Space Science and Engineering Center [Madison]
25 University of Otago [Dunedin, Nouvelle-Zélande]
26 UMN - University of Minnesota [Twin Cities]
27 BCCR - Bjerknes Centre for Climate Research
28 BGS - Biogéosciences [UMR 6282]
29 CRC - Centre de Recherches de Climatologie [UMR Biogéosciences]
30 UB - Université de Bourgogne
31 CNRS - Centre National de la Recherche Scientifique
32 SIO - UC San Diego - Scripps Institution of Oceanography
33 NWRA - NorthWest Research Associates
34 Universität Innsbruck [Innsbruck]
35 NCAR - National Center for Atmospheric Research [Boulder]
36 Penn State - Pennsylvania State University
37 ARC Centre of Excellence for Climate Extremes
38 WHOI - Department of Marine Chemistry and Geochemistry
39 University of Colorado [Boulder]
40 WSL - WSL Institute for Snow and Avalanche Research SLF [Davos]
Léonard Barthélemy
- Fonction : Auteur
- PersonId : 1313924
- IdHAL : leonard-barthelemy
- ORCID : 0009-0002-0479-2116
J Blanchet
- Fonction : Auteur
- PersonId : 742198
- IdHAL : juliette-blanchet
- ORCID : 0000-0001-8088-8895
Mathieu Casado
- Fonction : Auteur
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- IdHAL : mathieu-casado
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Francis Codron
- Fonction : Auteur
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- IdHAL : francis-codron
- ORCID : 0000-0001-7038-6189
- IdRef : 177314923
Vincent Favier
- Fonction : Auteur
- PersonId : 761044
- IdHAL : vincent-favier
- ORCID : 0000-0001-6024-9498
- IdRef : 070138389
Amaelle Landais
- Fonction : Auteur
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- IdHAL : amaelle-landais
- IdRef : 08942851X
Ghislain Picard
- Fonction : Auteur
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- IdHAL : ghislain-picard
- ORCID : 0000-0003-1475-5853
Benjamin Pohl
- Fonction : Auteur
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- IdHAL : benjamin-pohl
- ORCID : 0000-0002-9339-797X
Étienne Vignon
- Fonction : Auteur
- PersonId : 777817
- IdHAL : etienne-vignon
- ORCID : 0000-0003-3801-9367
- IdRef : 223851205
Résumé
Between March 15-19, 2022, East Antarctica experienced an exceptional heatwave with widespread 30-40° C temperature anomalies across the ice sheet. In Part I, we assessed the meteorological drivers that generated an intense atmospheric river (AR) which caused these record-shattering temperature anomalies. Here in Part II, we continue our large, collaborative study by analyzing the widespread and diverse impacts driven by the AR landfall. These impacts included widespread rain and surface melt which was recorded along coastal areas, but this was outweighed by widespread, high snowfall accumulations resulting in a largely positive surface mass balance contribution to the East Antarctic region. An analysis of the surface energy budget indicated that widespread downward longwave radiation anomalies caused by large cloud-liquid water contents along with some scattered solar radiation produced intense surface warming. Isotope measurements of the moisture were highly elevated, likely imprinting a strong signal for past climate reconstructions. The AR event attenuated cosmic ray measurements at Concordia, something previously never observed. Finally, an extratropical cyclone west of the AR landfall likely triggered the final collapse of the critically unstable Conger Ice Shelf while further reducing an already record low sea-ice extent.
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