_RL lwfluxperiod
& lwfluxperiod, lwfluxStartTime,
I lwfluxStartTime, lwfluxperiod, lwfluxRepCycle,
I 'exf', 'lwflux', lwfluxperiod,
I lwfluxperiod, exf_inscal_lwflux, lwfluxconst,
& lwfluxRepCycle, lwfluxperiod, lwfluxStartTime,
lwfluxperiod = 0.0 _d 0
I lwfluxfile, lwfluxRepCycle, lwfluxperiod,