Articles | Volume 24, issue 7
https://doi.org/10.5194/acp-24-4451-2024
https://doi.org/10.5194/acp-24-4451-2024
Research article
 | 
17 Apr 2024
Research article |  | 17 Apr 2024

Wintertime extreme warming events in the high Arctic: characteristics, drivers, trends, and the role of atmospheric rivers

Weiming Ma, Hailong Wang, Gang Chen, Yun Qian, Ian Baxter, Yiling Huo, and Mark W. Seefeldt

Data sets

ECMWF Reanalysis v5 (ERA5) ECMWF https://www.ecmwf.int/en/forecasts/dataset/ecmwf-reanalysis-v5

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Short summary
Extreme warming events with surface temperature going above 0°C can occur in the high-Arctic winter. Although reanalysis data show that these events were short-lived and occurred rarely during 1980–2021, they have become more frequent, stronger, and longer lasting latterly. A dipole pattern, comprising high- and low-pressure systems, is found to be the key in driving them. These findings have implications for the recent changes in sea ice, hydrological cycle, and ecosystem over the Arctic.
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