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SUMMARY:The Arctic Boundary Layer: Coupling Clouds &amp\; Sea Ice - Prof. 
 Ian M. Brooks\, University of Leeds
DTSTART:20150519T130000Z
DTEND:20150519T140000Z
UID:TALK59098@talks.cam.ac.uk
CONTACT:Dr. Pranab Deb
DESCRIPTION:The observed rapid decline in summer Arctic sea ice extent\, a
 nd overall thinning of the ice are not well reproduced by models. While th
 ere are deficiencies in the representation of sea ice\, at least part of t
 he problem lies in the atmosphere. Boundary layer clouds are a first order
  control on the surface energy budget through their control of solar and i
 nfra red radiation\, but are poorly represented in models. Turbulent excha
 nge at the surface is also not well parameterized over sea ice. \nImprovem
 ents in understanding the controlling processes - including turbulence\, a
 erosol/cloud interactions\, boundary layer thermodynamic structure - requi
 res in situ measurements. Here I will discuss results from recent measurem
 ent campaigns in the Arctic: ASCOS\, ACCACIA and ACSE\, each taking a diff
 erent approach to studying the Arctic marine atmospheric boundary layer.
LOCATION:British Antarctic Survey\, Room 187
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