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The extraordinary March 2022 East Antarctica “heat” wave. Part 2: impacts on the Antarctic ice sheet

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The extraordinary March 2022 East Antarctica “heat” wave. Part 2: impacts on the Antarctic ice sheet
Other Titles
2022년 3월 동남극에서 발생한 이례적인 열파. 2: 남극 빙상에 미친 영향
Jonathan D. Wille
Simon P. Alexander
Charles Amory
Rebecca Baiman
Leonard Barthelemy
Dana M. Bergstrom
Alexis Berne
Hanin Binder
Juliette Blanchet
Deniz Bozkurt
Thomas J. Bracegirdle
Mathieu Casado
Choi, Taejin
Elise Fourre
Rene D. Garreaud
Christophe Genthon
Irina V. Gorodetskaya
Sergi Gonzalez-Herrero
Victoria J. Heinrich
Guillaume Hubert
Hanna Joos
Kim, Seong-Joong
John C. King
Christoph Kittel
Amaelle Landais
Matthew Lazzara
Gregory H. Leonard
Jan L. Lieser
Michelle Maclennan
David Mikolajczyk
Peter Neff
Ines Ollivier
Ghislain Picard
Benjamin Pohl
Martin F. Ralph
Penny Rowe
Elisabeth Schlosser
Christine A. Shields
Inga J. Smith
Michael Sprenger
Luke Trusel
Danielle Udy
Tessa Vance
Etienne Vignon
Catherine Walker
Nander Wever
Xun Zou
Antarctic ice sheetAtmospheric riverEast AntarcticaHeat wave
Issue Date
Jonathan D. Wille, et al. 2024. "The extraordinary March 2022 East Antarctica “heat” wave. Part 2: impacts on the Antarctic ice sheet". JOURNAL OF CLIMATE, 37(3): 779-799.
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.
Jang Bogo Station
Appears in Collections  
2023-2023, Understanding of Antarctic climate and environment and assessments of global influence (23-23) / Park, Ki-Tae (PE23030)
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