runoff(i,j,bi,bj)=exf_inscal_runoff*runoff(i,j,bi,bj)
& exf_inscal_runoff, exf_inscal_apressure, exf_inscal_snowprecip,
exf_inscal_runoff = 1. _d 0
_RL exf_inscal_runoff
& , exf_inscal_runoff