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SUMMARY:Polar Oceans Seminar Talk - Christina Schmidt (BAS):  Antarctic Bo
 ttom Water formation and its dynamics in a changing climate - Christina Sc
 hmidt
DTSTART:20260415T120000Z
DTEND:20260415T130000Z
UID:TALK242134@talks.cam.ac.uk
CONTACT:Katherine Turner
DESCRIPTION:Antarctic Bottom Water (AABW) is an important part of the clim
 ate system as it occupies about one-third of the ocean’s volume\, ventil
 ates the abyss\, and stores heat and carbon for centuries. The formation o
 f AABW at the Antarctic continental margin is therefore a key process in t
 he global ocean circulation but observing and accurately modelling AABW re
 mains an ongoing challenge. The aim of my PhD thesis has been to deepen ou
 r understanding of AABW dynamics\, motivated by its critical role in the g
 lobal ocean and declining AABW volume in a warming climate. Using ocean–
 sea ice models\, I investigate 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 meltwater variability to advance our understandin
 g of the physical mechanisms behind the recent salinity rebound in the Ros
 s Sea. Finally\, I assess the horizontal model resolution required to accu
 rately simulate AABW formation. By improving our understanding of past AAB
 W variability and identifying the model resolution required to simulate AA
 BW\, this work contributes to more reliable future projections of AABW for
 mation and the evolution of the global overturning circulation.
LOCATION:BAS Seminar Room 1
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