Description Usage Arguments Details
Estimates the slope of the saturation vapor pressure curve, Δ, given a specific temperature and saturation vapor pressure curve. Units of the returned value are (kPa C^{-1}).
1 | slp_sat_vap(Ta, es)
|
Ta |
The air temperature above a body of water, T (C). |
es |
Saturation vapor pressure of air, e_{a} (kPa). |
Slope is estimated via (Allen et al. 1998):
Δ = \frac{4098 e_{s}}{(T_{a} + 237.3)^{2}}
Allen, RG, LS Pereira, D Raes, M Smith. 1998. Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56. FAO, Rome, 300(9), D05109.
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