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

Walbröl, Andreas; Michaelis, Janosch; Becker, Sebastian; Dorff, Henning; Ebell, Kerstin; Gorodetskaya, Irina; Heinold, Bernd; Kirbus, Benjamin; Lauer, Melanie; Maherndl, Nina; Maturilli, Marion; Mayer, Johanna; Müller, Hanno; Neggers, Roel A. J.; Paulus, Fiona M.; Röttenbacher, Johannes; Rückert, Janna E.; Schirmacher, Imke; Slättberg, Nils; Ehrlich, André; Wendisch, Manfred; Crewell, Susanne

doi:https://doi.org/10.5194/acp-24-8007-2024

Articles | Volume 24, issue 13

https://doi.org/10.5194/acp-24-8007-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

HALO-(AC)³ – an airborne campaign to study air...

https://doi.org/10.5194/acp-24-8007-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 13

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 Müller, Roel A. J. Neggers, Fiona M. Paulus, Johannes Röttenbacher, Janna E. Rückert, Imke Schirmacher, Nils Slättberg, André Ehrlich, Manfred Wendisch, and Susanne Crewell

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Jun 2023	41	17	0	58
Jul 2023	58	28	10	96
Aug 2023	40	16	1	57
Sep 2023	36	15	1	52
Oct 2023	33	19	2	54
Nov 2023	33	4	0	37
Dec 2023	29	7	2	38
Jan 2024	36	8	1	45
Feb 2024	29	13	0	42
Mar 2024	33	4	2	39
Apr 2024	34	2	3	39
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Cumulative views and downloads (calculated since 13 Apr 2023)

Month	HTML	PDF	XML	Total
Apr 2023	127	46	5	178
May 2023	81	26	2	109
Jun 2023	41	17	0	58
Jul 2023	58	28	10	96
Aug 2023	40	16	1	57
Sep 2023	36	15	1	52
Oct 2023	33	19	2	54
Nov 2023	33	4	0	37
Dec 2023	29	7	2	38
Jan 2024	36	8	1	45
Feb 2024	29	13	0	42
Mar 2024	33	4	2	39
Apr 2024	34	2	3	39
May 2024	48	13	1	62
Jun 2024	61	12	3	76
Jul 2024	16	0	16

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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.

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

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

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