Description Usage Arguments Value References Examples
This function is used to estimate the The atmospheric pressure, P, by using a simplification of the ideal gas law, assuming 20°C for a standard atmosphere. Please, see the equation 7 from the FAO Irrigation and drainage paper 56.
1 | atm_pressure(z)
|
z |
Elevation above sea level in meters. |
Atmospheric pressure in kPa.
Allen et al., 1998. Crop Evapotranspiration. Guidelines for computing crop water requirements. FAO Irrigation and drainage paper 56. http://www.fao.org/3/X0490E/x0490e00.htm.
1 | atm_pressure(z= 1120)
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