View source: R/cal_radiation.R
cal_Rli | R Documentation |
Estimate Incoming longwave radiation. Not included in FAO56 paper but added for convinience.
cal_Rli(
temp,
ea = NULL,
s = 1,
method = c("MAR", "SWI", "IJ", "BRU", "SAT", "KON")
)
temp |
Near surface air temperature |
ea |
Near surface actual vapour pressure |
s |
Cloud air emissivity, the ratio between acutal incomming shortwave radiation and clear sky incoming shortwave radiation. |
method |
The method to esteimate the air emissivity. Must be one of 'MAR', 'SWI', 'IJ', 'BRU', 'T', and 'KON'. |
Incomming longwave radiation [W /m2]
.
Satterlund, D. R. (1979), An improved equation for estimating long-wave radiation from the atmosphere, Water Resour. Res., 15( 6), 1649– 1650, doi:10.1029/WR015i006p01649.
Sedlar, J., & Hock, R. (2009). Testing longwave radiation parameterizations under clear and overcast skies at Storglaciären, Sweden. The Cryosphere, 3(1), 75-84.
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