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SUMMARY:SubZero: Floe-Resolving Sea Ice Model - Georgy Manucharyan\, Unive
 rsity of Washington
DTSTART:20201118T160000Z
DTEND:20201118T170000Z
UID:TALK150727@talks.cam.ac.uk
CONTACT:Dr Irena Vankova
DESCRIPTION:Sea ice is commonly represented in climate models as a continu
 ous fluid with prescribed rheological properties aimed to represent its mo
 tion at relatively large scales\, O(100km). However\, at relatively small 
 scales\, O(10 km) and less\, sea ice consists of a collection of strongly 
 interacting floes that undergo frequent fractures leading to large-scale m
 otion. Here\, I will present a prototype of a new sea ice model (SubZero) 
 that explicitly simulates the lifecycle of individual sea ice floes. Its v
 arious capabilities will be demonstrated and physical parameterizations wi
 ll be discussed\, including floe fractures\, welding\, creation from the o
 pen ocean\, etc. The key advantage of this model is that its evolution equ
 ations can\, in principle\, be constrained from observations for each indi
 vidual process parameterization\, and hence it could present a valuable al
 ternative to existing rheological models\, the parameters of which do not 
 represent explicitly observable quantities.
LOCATION:British Antarctic Survey\, Zoom
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