psychC {sirad}

Psychrometric constant

Description

'psychC' estimates the psychrometric constant.

Usage

psychC(Tmax,Tmin,z)

Arguments

Tmax

Vector of length n containing daily maximum temperature [C].

Tmin

Vector of length n containing daily minumum temperature [C].

z

Altitude above the sea level [m].

Value

Psychrometric constant [kPaC-1]

Author(s)

Jedrzej S. Bojanowski

References

Allen, R.G., L.S. Pereira, D. Raes, and M. Smith. 1998. Crop Evapotranspiration: Guidelines for computing crop water requirements. Irrigation and Drainage Paper 56, Food and Agriculture Organization of the United Nations, Rome, pp. 300.

Examples

psychC(17,16,1800)