DH {FAO56}

Daylight Hours (N)

Description

DH returns the value of daylight hours.

Usage

DH(omega_s)

Arguments

omega_s

A numeric scalar that denotes the sunset hour angle [rad].

Details

This is a function to calculate the daylight hours.

Value

The function returns the value of daylight hours as a numeric scalar.

Reference

Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. (1998). Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56. Fao, Rome, 300(9), D05109.

See Also

SunHA.

Examples

DH(omega_s = 1.527)