Improving solid ice runoff to ocean

Stephen Price will lead this discussion with help from Ruby Leung, Jon Wolfe, and Jeremy Fyke (Unlicensed)

Motivtation / Agenda

• runs with coupled model have crashed due to negative salinities
• this problem was traced back to very large solid runoff fluxes around Antarctica
• in turn, this was found to be due to the runoff map for Antarctica being incorrect
• we want to improve on this so that the snowcapping scheme works right for Antarctic
• an image to give an idea of the actual ice flux (observed) is included below
• one possible option to consider would be to supply the runoff routing scheme with routing directions based on the observed or modeled ice flow

Notes

• ice / ocean team will provide river runoff team w/ ice velocity (vectors) for routing of solid runoff (Stephen Price)
• vectors to be provide on lat / lon coords.
• consider interpolating directly from MPAS-LI grid to 1/2 deg. runoff grid (need scrip file for the latter)
• land ice folks need to figure out how best to provide velocity component information (e.g., because the components will be in x,y polar stereo)
• liquid runoff CAN remain as is (using river channel network)
• to do for runoff team: need ocean domain for matching up of coastline cells (this will be specific to ocean grid)