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SUMMARY:Analysis of clouds and cloud-aerosol interactions with satellite d
 ata and general circulation models - Dr Johannes Quaas\, Max Planck Instit
 ut fur Meteorologie\, Germany
DTSTART:20100118T141500Z
DTEND:20100118T151500Z
UID:TALK21095@talks.cam.ac.uk
CONTACT:Dr Francis Pope
DESCRIPTION:Aerosol indirect effects\, the influence of anthropogenic aero
 sols serving as cloud condensation nuclei on cloud properties and subseque
 ntly planetary albedo\, constitute one of the largest uncertainties among 
 anthropogenic climate forcings. Satellite data are useful to constrain aer
 osol-cloud interaction parameterizations in general circulation models. On
  the other hand\, models may help to \ninterpret statistical relationships
  between aerosol and cloud properties found from satellite data analysis. 
 An overview is given of studies using statistical relationships between cl
 oud and radiation properties and aerosol concentration as derived from sat
 ellite data to constrain GCM parameterizations of aerosol indirect effects
 . Conversely\, the strongly positive relationship found in satellite data 
 between cloud cover and aerosol optical depth is interpreted using sensiti
 vity studies with a GCM.
LOCATION:Unilever Lecture Theatre\, Department of Chemistry
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