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DTSTAMP:20240509T075212Z
DESCRIPTION:Atmospheric and Oceanic Sciences Departmental Seminar Series\n
 \npresents\n\n \n\nThe Ice-Ocean Governor: ice-ocean stress feedback limit
 s Beaufort Gyre spin up \n\na talk by\n\nGianluca Meneghello\n	Research Sci
 entist\, Department of Earth\, Atmospheric and Planetary Sciences\,\n	MIT\n
 \nAbstract\n\nThe Beaufort Gyre is a key circulation system of the Arctic 
 Ocean and its main reservoir of freshwater. Freshwater storage and release
  affects Arctic sea ice cover\, as well as North Atlantic and global clima
 te. The dynamics of the gyre is governed by a combination of two mechanism
 s: eddy fluxes\, and the Ice-Ocean Governor\, a negative feedback between 
 the surface currents and the ice speed. Wind blows over the ice\, and the 
 ice drags the ocean. But as the gyre spins up\, currents catch the ice up 
 and turn off the surface stress. The governor sets the basic properties of
  the gyre\, such as its depth\, freshwater content\, and strength.\n\nWe w
 ill look at the ice-ocean governor from the theoretical\, numerical and th
 e observational point of view. Using observational evidence\, we will comp
 are the relative role of eddy fluxes and the governor in equilibrating the
  gyre in the current climate. As the Arctic warms in the future\, reduced 
 sea ice extent and more mobile ice will result in a deeper and faster Beau
 fort Gyre\, and the accumulated freshwater will be released by Ekman upwel
 ling or enhanced baroclinic instability.\n\nMonday July 15/ 11:00 AM/ Burn
 side Hall/ Room 934\n
DTSTART:20190715T150000Z
DTEND:20190715T163000Z
LOCATION:Room 934
SUMMARY:The Ice-Ocean Governor: ice-ocean stress feedback limits Beaufort G
 yre spin up
URL:https://www.mcgill.ca/channels/channels/event/ice-ocean-governor-ice-oc
 ean-stress-feedback-limits-beaufort-gyre-spin-297910
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