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SUMMARY:Atmospheric flow over South Georgia and the impacts on regional cl
 imate - Daniel Bannister (British Antarctic Survey)
DTSTART:20121212T110000Z
DTEND:20121212T120000Z
UID:TALK40634@talks.cam.ac.uk
CONTACT:Dr Scott Hosking
DESCRIPTION:Average summer temperatures over South Georgia have risen by a
 round 1 C since the 1920s\, while glaciers have retreated at variable rate
 s. In parallel with these changes\, surface westerlies have increased by a
 bout 3 m/s.  As South Georgia is a mountainous island\, with 19 peaks over
  2 km\, strong downslope winds can develop on the lee side of the island c
 ausing dramatic temperature increases as the descending air warms adiabati
 cally  --  this is known as the föhn effect.\n\nIn this talk\, I will inv
 estigate the extent by which these observed changes are due to the föhn e
 ffect by showing preliminary results from a 10-year climatology based on A
 WS data\, and high-resolution simulations using the Weather Research and F
 orecasting (WRF) model.\n\nA better understanding of these atmospheric pro
 cesses will provide greater confidence in modelling regional climates in m
 ountainous terrain\, as well as producing better predictions concerning So
 uth Georgia’s terrestrial and marine environments which support rich yet
  delicate ecosystems.
LOCATION:British Antarctic Survey\, Room 307
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