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nightmares (version 0.0.2)

atm_pressure: Atmospheric pressure

Description

This function is used to estimate the The atmospheric pressure, P, by using a simplification of the ideal gas law, assuming 20<U+00B0>C for a standard atmosphere. Please, see the equation 7 from the FAO Irrigation and drainage paper 56.

Usage

atm_pressure(z)

Arguments

z

Elevation above sea level in meters.

Value

Atmospheric pressure in kPa.

References

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.

Examples

Run this code
# NOT RUN {
atm_pressure(z= 1120)

# }

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