BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Dynamics of heat transfer and exchanges across the Antarctic Slope
  Front - Andrew Stewart\, UCLA
DTSTART:20180613T100000Z
DTEND:20180613T110000Z
UID:TALK106738@talks.cam.ac.uk
CONTACT:Dr Emma Boland
DESCRIPTION:The Antarctic Slope Front (ASF) serves as a dynamical barrier 
 separating the cold waters of the Antarctic continental shelf from the war
 mer waters of the open Southern Ocean. It therefore mediates the export of
  Antarctic Bottom Water to the global abyss and the delivery of heat to An
 tarctica’s floating ice shelves\, a process that is accelerating land-ba
 sed ice loss in various sectors of the continent. This seminar will review
  current understanding of the role of the ASF in near-Antarctic and global
  ocean circulation\, with an emphasis on recent work that points to a prom
 inent role for high-frequency variability\, most notably eddies and tides\
 , in modulating cross-ASF exchanges. The small scales (less than 20km) at 
 which the resulting exchanges occur has historically limited our understan
 ding via both direct measurements and modeling approaches\, particularly i
 n their contribution to continental-scale processes. Our work aims to clos
 e this gap in understanding using a high-resolution (1/48th degree) global
  ECCO2 simulation that resolves high-frequency exchanges across the ASF ar
 ound the entire continent. We quantify the relative roles of tides\, eddie
 s and mean flows in exchanging heat across the continental shelf and slope
 \, and the spatial localization of this heat transport. We then provide in
 sight into the processes controlling cross-slope exchange by using energy 
 and vorticity budgets to characterize interactions between tides\, eddies\
 , the oceanic mean flow and the overlying sea ice. Finally\, we discuss on
 going avenues of research into the dynamics of the ASF and heat/tracer bud
 gets around the entire Antarctic continent.
LOCATION:British Antarctic Survey\, Innovation Centre\, Seminar Room 2
END:VEVENT
END:VCALENDAR