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SUMMARY:Wind-driven coastal polynya variability drives decadal ice-shelf m
 elt variability in the Amundsen Sea - Michael Haigh - Michael Haigh
DTSTART:20251029T140000Z
DTEND:20251029T150000Z
UID:TALK236704@talks.cam.ac.uk
CONTACT:Katherine Turner
DESCRIPTION:*please note*\nIf you wish to attend\, get in contact with the
  organisers so they can let you into BAS !!!\n\nAbstract:\nThe ice shelves
  in the Amundsen Sea are being melted rapidly by warm Circumpolar Deep Wat
 er (CDW)\, causing sea-level rise. Ice-shelf melt variability is controlle
 d by the speed of an undercurrent which flows along the continental slope 
 and transports CDW onto the continental shelf. We study decadal variabilit
 y of the undercurrent and ice-shelf melting using new regional ice-ocean m
 odel perturbation experiments. These perturbation experiments suggest that
  the undercurrent decadal variability is controlled by variability in coas
 tal sea-ice freshwater fluxes which itself is driven by winds mechanically
  opening and closing coastal polynyas. We also quantify a positive feedbac
 k mechanism between the undercurrent and ice-shelf melting\, which is resp
 onsible for 25% of their decadal variability.\n\nhttps://teams.microsoft.c
 om/l/meetup-join/19%3ameeting_MGE2NDVmNGUtNDAyOC00N2Y1LWExYjctNDc0OWIzODEx
 N2Mw%40thread.v2/0?context=%7b%22Tid%22%3a%22b311db95-32ad-438f-a101-7ba06
 1712a4e%22%2c%22Oid%22%3a%229a5b5150-2ddd-43f0-9054-966647264d30%22%7d
LOCATION:BAS Seminar Room  330b
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