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UID:20260726T233304EDT-5724onkkUv@132.216.98.100
DTSTAMP:20260727T033304Z
DESCRIPTION: \n\nStudent Seminar Series\n\nDepartment of Atmospheric & Ocea
 nic Sciences\n\npresents\n\na talk by\n\nCharles Brunette\n	PhD student\n\n
 A new free drift sea ice velocity dataset for improved representations of 
 ice drift trajectories\n\nPrevious work shows that tracking the motion of 
 sea ice in a Lagrangian framework can be used to produce skillful seasonal
  forecasts of sea ice at the pan-Arctic scale (Williams et al. 2016) and a
 t the regional scale (Brunette et al. 2019) and can also be used to analyz
 e socio-environmental impacts related to sea ice circulation (Newton et al
 . 2017). However\, the Polar Pathfinder sea ice motion dataset from the Na
 tional Snow and Ice Data Centre (Tschudi et al. 2016)\, which is commonly 
 used for calculations of ice drift trajectories\, contains significant bia
 ses in drift speed and angle. The bias is especially strong in the summer 
 when less satellite drift-vectors are available\, and the Polar Pathfinder
  composite product relies more heavily on poorly-constrained free drift es
 timates (ice motion in response to wind forcing and ocean currents in the 
 absence of internal stresses). To improve the quality of ice motion estima
 tes in the summer\, we propose to compile a new sea ice free drift dataset
 \, based on surface winds from ERA-Interim and calibrated on drifting buoy
 s from the International Arctic Buoy Program.\n\nI will present recent wor
 k on the parameterization of an ice state dependent transfer coefficient b
 etween wind speed and sea ice speed\, and estimates of the near surface oc
 eanic currents that are necessary to constrain ice motion.\n\nWednesday No
 v 20/ 2.30 PM/ Room 934 Burnside Hall\n\n \n\n \n\n \n
DTSTART:20191120T193000Z
DTEND:20191120T203000Z
LOCATION:Room 934\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:A new free drift sea ice velocity dataset for improved representati
 ons of ice drift trajectories
URL:https://www.mcgill.ca/meteo/channels/event/new-free-drift-sea-ice-veloc
 ity-dataset-improved-representations-ice-drift-trajectories-302635
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