wswdown(i,j,bi,bj) = max(wswdown(i,j,bi,bj),wswdown0)
& wswflux0, wswdown0, wlwflux0, wlwdown0,
_RL wswdown0
& wprecip0, wswflux0, wswdown0, wwind0,
wswdown0 = 0. _d 0