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SUMMARY:Influences of Melt Water from Sea Ice/Ice Shelf in Polar Oceans - 
 Kofan Lu\, JAMSTEC
DTSTART:20200708T090000Z
DTEND:20200708T100000Z
UID:TALK149779@talks.cam.ac.uk
CONTACT:Louis Couston
DESCRIPTION:Fresh melt water from sea ice and ice shelf is not only essent
 ial to the ocean hydrography but the mesoscale dynamics due to the induced
  baroclinicity. Warm intrusions from the Bering Strait transport heat and 
 nutrients via baroclinic eddies vertically beneath the sea ice and lateral
 ly across structural fronts near the ice edge in the eastern Chukchi Sea. 
 Numerical models using the Regional Ocean Model System (ROMS) are integrat
 ed to systematically investigate the importance of the baroclinic eddy fie
 ld and the factors that affect its dynamics\, specifically on the stratifi
 cations determined by the fresh water volume. Model results show a noticea
 ble effect of strong wind events on ice edge displacement. The advection o
 f ice away from or toward the inflow changes the ice melt rate and the sal
 inity of the melt water plume\, both are the factors that important to the
  heat transported by baroclinic instability and further feedback to the ic
 e melt rate. Similar mechanisms can be found elsewhere around the ice fron
 ts of sea ice and ice shelves\,it is worth studying with more systematical
 ly models of the other regional oceans to explore the coincidences and dis
 similarities.
LOCATION:British Antarctic Survey\, Zoom
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