cal_solarInclination {simET}

Calculating solar inclination

Description

A parameter used to determine the position of the sun relative to the observer (the other one is the angle from south).Conversion relationship with solar altitude angle: solar inclination=pi/2-solar altitude.

Usage

cal_solarInclination(solar_declination, latitude, hour_anger)

Arguments

solar_declination

is solar declination anger. It can be calculated from cal_solardeclination().

latitude

is the latitude data (Radian).

hour_anger

is hour anger. It can be calculated from cal_hourangle().

Value

A vector for solar inclination (Radian)

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_solarInclination(solar_declination=-0.297,latitude=30,hour_anger=0)