R_il: Radiation, incoming longwave

Description Usage Arguments Value References

View source: R/radiation_functions.R

Description

Calculates the incoming longwave radiation using cloud cover fraction and mean daily air temperature based on McMahon et al. (2013) Equation S11.27.

Usage

1
R_il(Cf, atmp, SBc = 4.903e-09)

Arguments

Cf

fraction of cloud cover (-)

atmp

air temperature (degrees C). When dt is "daily" or larger, argument should be a list with elements "min" and "max" for daily min and max temperatures. When dt is "hourly", argument should be a vector with hourly recorded temperatures.

SBc

Stefan-Boltzman constant (MJ/m^2/day). Defaults to 4.903e-9 MJ/m^2/day.

Value

Cf

the fraction of cloud cover (-)

References

McMahon, T. A., Peel, M. C., Lowe, L., Srikanthan, R., and McVicar, T. R.: Estimating actual, potential, reference crop and pan evaporation using standard meteorological data: a pragmatic synthesis, Hydrol. Earth Syst. Sci., 17, 1331–1363, https://doi.org/10.5194/hess-17-1331-2013, 2013.


WDNR-Water-Use/CSLSevap documentation built on April 9, 2021, 1:35 a.m.