_RL exf_inscal_sflux
& exf_inscal_sflux,
I exf_inscal_sflux,
I sfluxperiod, exf_inscal_sflux, sfluxconst,
& exf_inscal_hflux, exf_inscal_sflux, exf_inscal_evap,
exf_inscal_sflux = 1. _d 0