Rns {MeTo}

Net solar or net shortwave radiation (Rns)

Description

Net shortwave radiation is the balance between incoming and reflected solar radiation.

Usage

Rns(Rs, control = list(albedo = 0.23))

Arguments

Rs

incoming solar radiation [MJ/(m2 time)]

control

list for control parameters and empirical factors (see Details)

Details

control:

albedo [-]: 0.23 for hypothetical grass and alfalfa reference crops used in the FAO-56 PM equations

valid for daily and shorter periods

Value

Rns net solar or shortwave radiation [MJ/(m2 time)]

Note

eq. 38 of reference

References

Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. (1998). Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56. FAO, Rome, 300(9).

Examples

Rns(Rs = 22.1)
Rns(Rs = 22.1, control = list(albedo = 0.20))