_RL convertPRECIP2HI, convertHI2PRECIP
convertPRECIP2HI=SEAICE_deltaTtherm*rhoConstFresh/SEAICE_rhoIce
convertHI2PRECIP=1./convertPRECIP2HI
d_HSNWbyRAIN(I,J)=convertPRECIP2HI*ICE2SNOW*
d_HFRWbyRAIN(I,J)=-convertPRECIP2HI*