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SUMMARY:Antarctic elevation change from satellite radar altimetry - Malcol
 m McMillan (University of Leeds)
DTSTART:20131030T163000Z
DTEND:20131030T173000Z
UID:TALK47530@talks.cam.ac.uk
CONTACT:Poul Christoffersen
DESCRIPTION:It is 50 years since the first scientific observations of Anta
 rctica were made from space. Since then\, satellites have revolutionised o
 ur ability to monitor the Antarctic Ice Sheet on a continent-wide scale\; 
 detailing the diverse behaviour of a vast ice sheet. One of the longest co
 ntinuous satellite records of Antarctica comes from the series of radar al
 timeters flown on-board the ERS-1\, ERS-2 and Envisat satellites. For the 
 past two decades\, these instruments have documented changes in ice sheet 
 elevation\, and helped to improve our understanding of the mechanisms and 
 time-scales of Antarctica's evolution. Now\, with the recent retirement of
  ERS-2 and the loss of Envisat\, ESA's CryoSat-2 mission offers the potent
 ial to further extend this record.\n\nThis talk will provide an overview o
 f this 20 year dataset\; its value\, its limitations and its contribution 
 to recent estimates of ice sheet mass balance. I will then discuss current
  analysis of CryoSat-2 observations\, focusing upon data acquired in it's 
 novel interferometric mode of operation. This instrument is the first of i
 ts kind to be flown on an Earth observation satellite\, and presents both 
 opportunities and challenges for mapping ongoing changes to the Antarctic 
 Ice Sheet.
LOCATION:Scott Polar Research Institute\, main lecture theatre
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