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SUMMARY:Modelled centennial ocean warming in the Amundsen Sea driven by th
 ermodynamic atmospheric changes\, not winds - Katherine Turner (British An
 tarctic Survey)
DTSTART:20250115T140000Z
DTEND:20250115T150000Z
UID:TALK225646@talks.cam.ac.uk
CONTACT:Dr Birgit Rogalla
DESCRIPTION:Increased ice shelf melting caused by ocean warming in the Amu
 ndsen Sea is likely committed for the coming century. However\, the driver
 s behind this projected ocean warming are not yet fully understood. Using 
 a high-resolution regional model\, we compare future projections of the Am
 undsen Sea under the RCP8.5 scenario against pre-industrial projections. T
 he two ensembles differ measurably between 2013 and 2018\, and continue to
  diverge under high-emissions forcing. We conduct two more experiments sep
 arating the effects of stronger\, poleward-shifted winds against a warmer\
 , wetter atmosphere (defined here as atmospheric thermodynamics). We run e
 xperiments that use RCP8.5 winds and pre-industrial thermodynamics\, and v
 ice versa. We find that atmospheric thermodynamic change modulates CDW inf
 low onto the shelf\, making thermodynamic change the primary driver of oce
 an warming on the continental shelf on centennial timescales.
LOCATION:BAS Seminar Room 1\; https://ukri.zoom.us/j/94303839103
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