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The June 2022 extreme warm event in central West Antarctica

Published online by Cambridge University Press:  30 October 2023

Heitor Evangelista ,
Luciana F. Prado Open the ORCID record for Luciana F. Prado [Opens in a new window] ,
Irina V. Gorodetskaya ,
Heber Reis Passos ,
Franco Nadal Villela ,
Marcelo Sampaio ,
Elaine Alves dos Santos  and
Carla M.C. de Brito
Heitor Evangelista
Affiliation:
Rio de Janeiro State University/LARAMG, Pavilhão Haroldo L. Cunha, Subsolo, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, RJ, Brazil
Luciana F. Prado*
Affiliation:
Faculdade de Oceanografia, Rio de Janeiro State University, Rua São Francisco Xavier, 524, 4° andar, Bloco E, Maracanã, Rio de Janeiro, RJ, Brazil
Irina V. Gorodetskaya
Affiliation:
 Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Matosinhos, Portugal
Heber Reis Passos
Affiliation:
National Institute for Space Research - INPE, Av dos Astronautas, 1758, Jardim da Granja, São Jose dos Campos, SP, Brazil
Franco Nadal Villela
Affiliation:
Instituto Nacional de Meteorologia - INMET, Alameda Campinas, 433, Jardim Paulista, São Paulo, SP, Brazil
Marcelo Sampaio
Affiliation:
National Institute for Space Research - INPE, Av dos Astronautas, 1758, Jardim da Granja, São Jose dos Campos, SP, Brazil
Elaine Alves dos Santos
Affiliation:
Rio de Janeiro State University/LARAMG, Pavilhão Haroldo L. Cunha, Subsolo, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, RJ, Brazil
Carla M.C. de Brito
Affiliation:
Rio de Janeiro State University/LARAMG, Pavilhão Haroldo L. Cunha, Subsolo, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, RJ, Brazil
*
luciana.prado@uerj.br
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Abstract

The Antarctic surface mass balance has been shown to be sensitive to the impacts of atmospheric rivers (ARs), which bring anomalous amounts of both moisture and heat from lower latitudes poleward. Therefore, describing the characteristics of ARs and their intensity and frequency in the Antarctic regions by applying detection algorithms became a key method to evaluating their impacts on the surface mass balance and melting events. Several intense AR events have influenced Antarctica during the year 2022, and here we report an event with a peak on 10 June 2022 that was detected at 84°S, having a potential impact on West Antarctica. The extreme warm event originated in the Southern Pacific subtropical region and evolved towards the Southern Ocean, crossing the northern Antarctic Peninsula, before reaching as far as most inland regions in Antarctica, different from other typical ARs that are mostly restricted to the continental coast.

Keywords

Atmospheric riversclimate changeCriosfera 1extreme eventsheatwaveWest Antarctica
Type
Earth Sciences
Information
Antarctic Science , Volume 35 , Issue 5 , October 2023 , pp. 319 - 327
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Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of Antarctic Science Ltd

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