Articles | Volume 20, issue 8
https://doi.org/10.5194/cp-20-1885-2024
https://doi.org/10.5194/cp-20-1885-2024
Research article
 | 
30 Aug 2024
Research article |  | 30 Aug 2024

Carbonyl sulfide measurements from a South Pole ice core and implications for atmospheric variability since the last glacial period

Murat Aydin, Melinda R. Nicewonger, Gregory L. Britten, Dominic Winski, Mary Whelan, John D. Patterson, Erich Osterberg, Christopher F. Lee, Tara Harder, Kyle J. Callahan, David Ferris, and Eric S. Saltzman

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Short summary
We present a new ice core carbonyl sulfide (COS) record from the South Pole, Antarctica, yielding a 52 000-year atmospheric record after correction for production in the ice sheet. The results display a large increase in atmospheric COS concurrent with the last deglaciation. The deglacial COS rise results from an overall strengthening of atmospheric COS sources, implying a large increase in ocean sulfur gas emissions. Atmospheric sulfur gases have negative climate feedbacks.