cal_solarDeclination: Calculating solar declination

In simET: Tools for Simulation of Evapotranspiration of Field Crops and Soil Water Balance

Calculating solar declination

Description

Calculating solar declination

Usage

cal_solarDeclination(td)

Arguments

td	is the day of year.

Value

A vector for solar declination (Radian)

Note

The solar declination actually varies throughout the day too but its variation is very small; thus, it is often ignored. Negative angles occur when the angle is below the equator plane, positive for above the equator.

References

Teh CBS.Introduction to mathematical modeling of crop growth: How the equations are derived and assembled into a computer model. Brown Walker Press, 2006.

Examples

cal_solarDeclination(34)

simET documentation built on Aug. 19, 2023, 5:09 p.m.