From Gordon and Comiso, 1988

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Southern Ocean processes
Precipitation
Ice drift
Moisture flux
Albedo
From Gordon and Comiso, 1988
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Antarctic sea ice increase with global warming?
Warmer temperatures More moisture More
precipitation More freshwater input into
ocean More stable Southern Ocean Less
entrainment of WDW
More sea ice production
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Antarctic sea ice increase with global warming?
Warmer temperatures More moisture More
precipitation More freshwater input into
ocean More stable Southern Ocean Less
entrainment of WDW
Thicker snow on sea ice
Increased thermal insulation
More sea ice production
More snow- to-ice conversion
Less basal freezing
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Change in sea ice volume as a function of
precipitation (Balance between thermal insulation
and snow-to-ice conversion)
From Powell, Markus, Stoessel, 2005
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The March 2006 Arctic AMSR-E sea ice validation
campaign An update Thorsten
Markus Cryospheric Sciences Branch NASA Goddard
Space Flight Center
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AMSR-R airborne validation campaign in the Arctic
March 2006

• Data sets
• PSR AMSR-like microwave radiometer (PI A.
  Gasiewski)
• ATM laser altimeter (PI W. Krabill)
• D2P radar altimeter (PI C. Leuschen)
• Snow radar (PI S. Gogineni)
• Aerial photography (PI W. Krabill)
• In-situ data (PIs M. Sturm J. Maslanik)

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ICESat and ATM
Aerial photography
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D2P - atm comparsion
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KU snow radar
Snow radar
PSR and snow radar snow depth cm
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Things are coming together.slowly. PSR and ATM
data are fine. The snow radar didnt work as
well as anticipated. We are using ATM-D2P
differences as alternative for snow depth
estimates. There are a few processing issues
with the D2P but were working on it with Carl
Leuschen.
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Antarctic validation
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