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SUMMARY:Small-scale thermodynamic and dynamic studies using autonomous dri
 fting ice buoys and satellite Synthetic Aperture Radar (SAR) data - Phil H
 wang (The Scottish Association for Marine Science)
DTSTART:20140212T110000Z
DTEND:20140212T120000Z
UID:TALK48474@talks.cam.ac.uk
CONTACT:Dr Dan Jones
DESCRIPTION:In this talk we present a series of recent studies that invest
 igate small-scale (e.g. within a climate model grid size ~ 100 km) thermod
 ynamic and dynamics sea ice processes. This includes three key results: i)
  local variability of sea ice basal melt rate and the effects of solar rad
 iative warming at the spatial scale of less than 100 km\, ii) small-scale 
 (less than 1 km) deformation event of a single ice floe detected from mult
 iple buoys and satellite images\, and iii) fragmentation processes of sea 
 ice floes (i.e. changes in sea ice floe size seen from satellite SAR image
 s) from spring to summer transition.  Here we present how small-scale loca
 l variability in solar radiative warming affect sea ice bottom melt rate i
 n a sub-grid scale\, and how a single ice floe rotate and be deformed and 
 how this small-scale deformation would be affected by external forcing (i.
 e. atmospheric wind stress). We also present how much sea ice floes had be
 en already broken up in 2012 summer even before the 2012 August Great Stor
 m came into the scene\, and discuss the causes and implications of the 201
 2 ice floe fragmentation in comparison with the 2013 cases.\n\nCollaborato
 rs: KOPRI (KOrea Polar Research Institute)\, Jeremy Wilkinson (BAS)\, Pedr
 o Elosegui (CSIC)\, William Shaw (NPS)\, Tim Stanton (NPS)\, Jackie Richte
 r-Menge (CRREL).\n
LOCATION:British Antarctic Survey\, Room 307
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