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SUMMARY:The Weddell Gyre: Freshwater and carbon budgets and exports to the
  global ocean abyss - Pete Brown (UEA &amp\; BAS)
DTSTART:20130501T100000Z
DTEND:20130501T110000Z
UID:TALK44017@talks.cam.ac.uk
CONTACT:Povl Abrahamsen
DESCRIPTION:The Weddell Gyre is regarded as the primary location of deep a
 nd bottom water formation and sequestration of carbon\, nutrients and atmo
 spheric gases in the Southern Ocean. These processes are critically relian
 t on the freshwater balance of the region\, as at low temperatures density
 \, and by extension stratification\, circulation and deep water formation\
 , depends almost entirely upon salinity. Freshwater partitioning and natur
 al and anthropogenic carbon budgets and fluxes are investigated here throu
 gh oxygen isotope\, transient tracer and inorganic carbon measurements fro
 m three hydrographic cruises that together encircle the Weddell region. I 
 present data that reveals a region in approximate freshwater balance\, but
  that is a negligible carbon sink due to the seasonal extent of sea-ice. H
 owever\, its importance as a site for long-term removal of CO2 from contac
 t with the atmosphere through deep water export is confirmed. 
LOCATION:British Antarctic Survey\, Room 330B
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