cal_solarDeclination_in_FAO {simET}

Calculating solar declination with FAO56 method

Description

Calculating solar declination with FAO56 method

Usage

cal_solarDeclination_in_FAO(J)

Arguments

J

is the number of the day in the year between 1 (1 January) and 365 or 366 (31 December)

Value

A vector for solar declination(Radian)

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.