Improving ice-air interactions in FVCOM+CICE

Session: Physical Processes in Lakes (4)

James Kessler, University of Michigan, [email protected]
Ayumi Fujisaki-Manome, University of Michigan, [email protected]
Eric Anderson, NOAA/GLERL, [email protected]
Gregory Lang, Great Lakes Environmental Research Laboratory, [email protected]
Jia Wang, NOAA, GLERL, [email protected]
Philip Chu, NOAA/GLERL, [email protected]

Abstract

Many important physical processes and state variables of interest are at the interface between lake and atmosphere.  Because the atmosphere is a primary driver of lake variability, accurately representing these processes is imperative for establishing good models.

Recent work has focussed on the effect of various heat flux treatments between liquid water and air [Charusombat et al. 2018, Anderson et al. 2018] but little work has been done in regard to ice-air fluxes.  A coupled hydrodynamic-ice model is applied to the Great Lakes using various treatments of the ice-air interface.  The modelled ice cover is validated and compared under the various schemes.  Additionally, the spatial distribution of ice is compared by using two treatments of ice drag coeffiecient which likely impacts ice deformation and transport.