fm_bidirrefl: Estimate the bidirectional reflectance.

Description Usage Arguments Value Author(s) See Also

Description

Given the reflectance, day of year and solar zenith angle, the bi-directional reflectance is returned. This reflectance is adjusted for the variation of the Earth-Sun distance through the year and transformed from the assumption of Sun at zenith to the actual solar zenith angle used.

Usage

1
    fm_bidirrefl(refl,doy,solang)

Arguments

refl

The normalised reflectance under the assumption of Sun at zenith

date

Time identification as POSIXct object

solang

Solar zenith angle in degrees

Value

The bi-directional reflectance as a value or a vector depending on the input

Author(s)

Øystein Godøy (o.godoy@met.no)

See Also

fm_ch3brefl, fm_esd


steingod/R-mipolsat documentation built on May 30, 2019, 2:31 p.m.