Arctic glaciers record wavier circumpolar winds

Ingo Sasgen*, Anette Salles, Martin Wegmann, Bert Wouters, Xavier Fettweis, Brice P.Y. Noël, Christoph Beck

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
31 Downloads (Pure)

Abstract

Glaciers in the Arctic respond sensitively to climate change, recording the polar amplification of global warming with increasing mass loss. Here, we use glacier mass balances in Svalbard and northern Arctic Canada to categorize tropospheric variability and the associated summer circulation over the Arctic. We establish a link between annual glacier mass balances and their respective atmospheric forcings since 1950 using GRACE/GRACE-FO satellite data (2002–2021), as well as regional climate models and reanalysis data (1950–2019). We find that asynchronous behaviour of mass balance between the regions has become very likely since the early 2000s, exceeding the range of previous decadal variability. Related tropospheric circulation exhibits more meridional patterns, a greater influence of meridional heat advection and a wavier summer circulation. The traceable impact on glacier mass balances emphasizes the importance of dynamic next to thermodynamic climate changes for the future of glacier mass loss, Arctic ecology and societal impacts.
Original languageEnglish
Pages (from-to)249-255
Number of pages7
JournalNature Climate Change
Volume12
Issue number3
DOIs
Publication statusPublished - 2022

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