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SUMMARY:Polar sea ice variability derived from ice cores: The Bromine appr
 oach - Andrea Spolaor\, University of Venice
DTSTART:20181003T093000Z
DTEND:20181003T103000Z
UID:TALK110833@talks.cam.ac.uk
CONTACT:Dr Gillian Young
DESCRIPTION:Sea ice is a crucial parameter in the climate system\, and it 
 is declining at a faster rate than models predicted. Bromine plays a centr
 al role in sea ice chemistry\, from where it is released as BrO during spr
 ingtime\, enriching its abundance in the polar atmosphere. Therefore\, bro
 mine enrichment in snow\, with respect to the sodium ratio in seawater\, c
 an be been linked to first year sea ice variability at the Poles. Measurem
 ents of Bromine enrichment (Br_enr) have been carried out in Greenland (NE
 EM and Renland ice cores)\, Svalbard\, Severnaya Zemlya and Antarctica (Ta
 los Dome\, Law Dome and Dome C). These climate ice archives investigated\,
  cover both the satellite era and the older climate periods back to the la
 st glaciation. In addition\, to better understand the Br signal in the ice
  core\, several surface experiments have been planned and conduct in sever
 al polar locations (Antarctic Plateau\, Svalbard\, Greenland) with the aim
  to understand the process controlling the Br deposition and its enrichmen
 t as well the possible post-depositional process that can occur at the sno
 w surface.
LOCATION:British Antarctic Survey\, Seminar Room 330b
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