_RL betaFacP1, betaFac, evpStarFac, evpRevFac, recip_evpRevFac
betaFac = SEAICE_evpBeta*recip_deltaT
betaFacU = betaFac
betaFacV = betaFac
betaFacP1 = betaFac + evpStarFac*recip_deltaT