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SUMMARY:The effects of different sudden stratospheric warming types on the
  ocean  - Amee O'Callaghan\, University of East Anglia
DTSTART:20150303T140000Z
DTEND:20150303T150000Z
UID:TALK58067@talks.cam.ac.uk
CONTACT:James Pope
DESCRIPTION:Sudden stratospheric warmings are a phenomenon that greatly di
 sturb the Northern Hemisphere winter polar vortex. These events occur roug
 hly once every two years and are typically diagnosed by a reversal of the 
 climatological westerly flow and a strong warming in the stratospheric pol
 ar vortex. These events are dynamically interesting in their own right but
  can also manifest an increased stratosphere-troposphere coupling which ca
 n impact the surface climate for several weeks to months. Here an intermed
 iate general circulation model is used to assess the surface impacts follo
 wing different types of sudden stratospheric warmings and their effect on 
 the ocean system. This research confirms the remarkable fact that the stra
 tosphere\, and in particular sudden stratospheric warmings\, possess the a
 bility to effect the ocean system and highlights that different SSW types 
 need to be simulated in coupled stratospheric/tropospheric/ocean models.
LOCATION:British Antarctic Survey\, Room 307
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