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SUMMARY:Impacts of Antarctic sea-ice retreat on Southern Hemisphere mid-la
 titude westerlies  - Dr Thomas Bracegirdle (British Antarctic Survey)
DTSTART:20191002T130000Z
DTEND:20191002T140000Z
UID:TALK131356@talks.cam.ac.uk
CONTACT:Dr Hua Lu
DESCRIPTION:The CMIP5 climate models simulate a robust poleward shift and 
 strengthening of the main eddy-driven belt of Southern Hemisphere (SH) mid
 -latitude near-surface westerly winds (hereinafter referred to as the ‘w
 esterly jet’ or ‘jet’) in response to future scenarios of increased 
 greenhouse gas concentrations. Such changes have wide-reaching implication
 s both regionally and globally relating to impacts on\, for example\, upta
 ke of thermal energy and CO2 in the Southern Ocean and ice-ocean interacti
 ons around Antarctica. However\, there is a large inter-model spread in th
 e magnitude of jet responses.\n\nIn this talk\, recent and current researc
 h will be presented on impacts of sea ice retreat and ocean surface temper
 ature change on the Southern mid-latitude tropospheric storm track and ass
 ociated westerlies. New results will be shown that indicate robust aspects
  of responses across a range of different climate models. A look ahead to 
 what might be expected from the CMIP6 models will also be presented. \n
LOCATION:British Antarctic Survey\, Innovation Centre\, Seminar Room 1
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