'rns' computes daily the net shortwave radiation. resulting from the balance between incoming and reflected solar radiation.
Usage
rns(sol_rad,albedo=0.23)
Arguments
sol_rad
Vector of length n of daily solar radiation [MJm-2d-1].
albedo
Albedo or canopy reflection coefficient, which is 0.23 for the hypothetical grass reference crop [dimensionless].
Value
Vector of length n of daily net shortwave radiation. [MJm-2d-1]
Details
Daily net shortwave radiation results from the balance between incoming and reflected solar radiation.
References
Allen, R.G., L.S. Pereira, D. Raes, and M. Smith. 1998. Crop Evapotranspiration: Guidelines for computing crop water requirements. Irrigation and Drainage Paper 56, Food and Agriculture Organization of the United Nations, Rome, pp. 300.