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CATEGORIES:British Antarctic Survey - Polar Oceans seminar se
 ries
SUMMARY:Polar Oceans Seminar Talk - Christina Schmidt (BAS
 ):  Antarctic Bottom Water formation and its dynam
 ics in a changing climate - Christina Schmidt
DTSTART;TZID=Europe/London:20260415T130000
DTEND;TZID=Europe/London:20260415T140000
UID:TALK242134AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/242134
DESCRIPTION:Antarctic Bottom Water (AABW) is an important part
  of the climate system as it occupies about one-th
 ird of the ocean’s volume\, ventilates the abyss\,
  and stores heat and carbon for centuries. The for
 mation of AABW at the Antarctic continental margin
  is therefore a key process in the global ocean ci
 rculation but observing and accurately modelling A
 ABW remains an ongoing challenge. The aim of my Ph
 D thesis has been to deepen our understanding of A
 ABW dynamics\, motivated by its critical role in t
 he global ocean and declining AABW volume in a war
 ming climate. Using ocean–sea ice models\, I inves
 tigate the interannual variability of AABW formati
 on and its underlying drivers. I then examine the 
 response of salinity in the Ross Sea to wind and m
 eltwater variability to advance our understanding 
 of the physical mechanisms behind the recent salin
 ity rebound in the Ross Sea. Finally\, I assess th
 e horizontal model resolution required to accurate
 ly simulate AABW formation. By improving our under
 standing of past AABW variability and identifying 
 the model resolution required to simulate AABW\, t
 his work contributes to more reliable future proje
 ctions of AABW formation and the evolution of the 
 global overturning circulation.
LOCATION:BAS Seminar Room 1
CONTACT:Katherine Turner
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