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cal_slopeOfSaturationVapourPressureCurve: Calculating slope of saturation vapour pressure curve

Description

Calculating slope of saturation vapour pressure curve

Usage

cal_slopeOfSaturationVapourPressureCurve(Tem)

Value

A vector for slope of saturation vapour pressure curve at air temperature T

Arguments

Tem

is air temperature (degrees Celsius).

Details

In the FAO Penman-Monteith equation, where it occurs in the numerator and denominator, the slope of the vapour pressure curve is calculated using mean air temperature.

References

Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. FAO Irrigation and drainage paper No. 56. Rome: Food and Agriculture Organization of the United Nations, 1998.