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| one publication added to basket [382722] |
Record-high Antarctic Peninsula temperatures and surface melt in February 2022: a compound event with an intense atmospheric river
Gorodetskaya, I.V.; Duran-Alarcon, C.; Gonzalez-Herrero, S.; Clem, K.R.; Zou, X.; Rowe, P.; Imazio, P.R.; Campos, D.; Leroy-Dos Santos, C.L.D.; Dutrievoz, N.; Wille, J.D.; Chyhareva, A.; Favier, V.; Blanchet, J.; Pohl, B.; Cordero, R.R.; Park, S.J.; Colwell, S.; Lazzara, M.A.; Carrasco, J.; Gulisano, A.M.; Krakovska, S.; Ralph, F.M.; Dethinne, T.; Picard, G. (2023). Record-high Antarctic Peninsula temperatures and surface melt in February 2022: a compound event with an intense atmospheric river. npj Climate and Atmospheric Science 6(1): 202. https://dx.doi.org/10.1038/s41612-023-00529-6
In: npj Climate and Atmospheric Science. Nature Portfolio: London. e-ISSN 2397-3722, meer
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| Auteurs | | Top |
- Gorodetskaya, I.V.
- Duran-Alarcon, C.
- Gonzalez-Herrero, S.
- Clem, K.R.
- Zou, X.
- Rowe, P.
- Imazio, P.R.
- Campos, D.
- Leroy-Dos Santos, C.L.D.
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- Dutrievoz, N.
- Wille, J.D.
- Chyhareva, A.
- Favier, V.
- Blanchet, J.
- Pohl, B.
- Cordero, R.R.
- Park, S.J.
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- Colwell, S.
- Lazzara, M.A.
- Carrasco, J.
- Gulisano, A.M.
- Krakovska, S.
- Ralph, F.M.
- Dethinne, T., meer
- Picard, G.
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| Abstract |
The Antarctic Peninsula (AP) experienced a new extreme warm event and record-high surface melt in February 2022, rivaling the recent temperature records from 2015 and 2020, and contributing to the alarming series of extreme warm events over this region showing stronger warming compared to the rest of Antarctica. Here, the drivers and impacts of the event are analyzed in detail using a range of observational and modeling data. The northern/northwestern AP was directly impacted by an intense atmospheric river (AR) attaining category 3 on the AR scale, which brought anomalous heat and rainfall, while the AR-enhanced foehn effect further warmed its northeastern side. The event was triggered by multiple large-scale atmospheric circulation patterns linking the AR formation to tropical convection anomalies and stationary Rossby waves, with an anomalous Amundsen Sea Low and a record-breaking high-pressure system east of the AP. This multivariate and spatial compound event culminated in widespread and intense surface melt across the AP. Circulation analog analysis shows that global warming played a role in the amplification and increased probability of the event. Increasing frequency of such events can undermine the stability of the AP ice shelves, with multiple local to global impacts, including acceleration of the AP ice mass loss and changes in sensitive ecosystems. |
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