_RL bdfAlphaOverDt
bdfAlphaOverDt = 1. _d 0
bdfAlphaOverDt = 1.5 _d 0
bdfAlphaOverDt = bdfAlphaOverDt / SEAICE_deltaTdyn
& ( bdfAlphaOverDt*seaiceMassU(I,J,bi,bj)
& ( bdfAlphaOverDt*seaiceMassV(I,J,bi,bj)