How does the arctic affect north atlantic climate? fresh perspectives on a long-standing question

Oltmanns, Marilena ORCID: https://orcid.org/0000-0002-8959-4938; Holliday, N. Penny ORCID: https://orcid.org/0000-0002-9733-8002; Screen, James; Evans, D. Gwyn; Josey, Simon A. ORCID: https://orcid.org/0000-0002-1683-8831; Moat, Ben ORCID: https://orcid.org/0000-0001-8676-7779; Karstensen, Johannes; Moore, G. W. Kent. 2021 How does the arctic affect north atlantic climate? fresh perspectives on a long-standing question. [Other] In: EGU General Assembly 2021, Online, 19-30 April 2021. EGU General Assembly 2021, online, European Geosciences Union.

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Abstract/Summary

Recent decades have been characterised by amplified Arctic warming and increased occurrence of extreme weather events in the North Atlantic region. While earlier studies noticed statistical links between high-latitude warming and mid-latitude weather extremes, the underlying dynamical connections remained elusive. Combining different data products, I will demonstrate a new mechanism linking Arctic ice losses with cold anomalies and storms in the subpolar region in winter, and with heat waves and droughts over Europe summer. Considering feedbacks of the identified mechanism on the Arctic Ocean circulation, I will further present new support for the potential of Arctic warming to trigger a rapid change in climate.

Item Type:	Publication - Conference Item (Other)
Digital Object Identifier (DOI):	10.5194/egusphere-egu21-5271
Date made live:	04 May 2021 14:14 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/530242

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