earthkit.meteo.solar.array.cos_solar_zenith_angle

earthkit.meteo.solar.array.cos_solar_zenith_angle(date, latitudes, longitudes)

Cosine of solar zenith angle.

Parameters:

• date (datetime.datetime) – Date

• latitudes (array-like) – Latitude [degrees]

• longitudes (array-like) – Longitude [degrees]

Returns:

Cosine of the solar zenith angle (all values, including negatives) [Hogan_and_Hirahara2015]. See also: http://answers.google.com/answers/threadview/id/782886.html

Return type:

float array