Articles | Volume 24, issue 13
https://doi.org/10.5194/acp-24-8007-2024
https://doi.org/10.5194/acp-24-8007-2024
Research article
 | 
15 Jul 2024
Research article |  | 15 Jul 2024

Contrasting extremely warm and long-lasting cold air anomalies in the North Atlantic sector of the Arctic during the HALO-(𝒜 𝒞)3 campaign

Andreas Walbröl, Janosch Michaelis, Sebastian Becker, Henning Dorff, Kerstin Ebell, Irina Gorodetskaya, Bernd Heinold, Benjamin Kirbus, Melanie Lauer, Nina Maherndl, Marion Maturilli, Johanna Mayer, Hanno MĂŒller, Roel A. J. Neggers, Fiona M. Paulus, Johannes Röttenbacher, Janna E. RĂŒckert, Imke Schirmacher, Nils SlĂ€ttberg, AndrĂ© Ehrlich, Manfred Wendisch, and Susanne Crewell

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Latest update: 20 Nov 2024
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Short summary
To support the interpretation of the data collected during the HALO-(AC)3 campaign, which took place in the North Atlantic sector of the Arctic from 7 March to 12 April 2022, we analyze how unusual the weather and sea ice conditions were with respect to the long-term climatology. From observations and ERA5 reanalysis, we found record-breaking warm air intrusions and a large variety of marine cold air outbreaks. Sea ice concentration was mostly within the climatological interquartile range.
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