R_ol: Radiation, outgoing longwave
In WDNR-Water-Use/CSLSevap: Evapo(transpi)ration Calculations

Description Usage Arguments Value References

Calculates the outgoing longwave radiation for a lake as a function of lake temperature ("McJannet"; McMahon et al., 2013, Equation S11.27) or as a function of wet bulb temperature ("wet_bulb"; McMahon et al., 2013, Equation S11.32).

1	R_ol(type = "McJannet", tmp1, tmp2 = NULL, SBc = 4.903e-09)

`type`	type of outgoing longwave radiation function to use. Defaults to "McJannet" for outgoing longwave radiation at lake temperature. Set to "wet_bulb" for outgoing longwave radiation at wet-bulb temperature.
`tmp1`	daily lake water temperature (if "McJannet") or wet bulb temperature (if "wet_bulb") (degrees C).
`tmp2`	defaults to NULL. If "wet_bulb", set to 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.

Rol

outgoing longwave radiation (MJ/m^2/day)

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.