lonlat2azizen

nawdex_analysis.io.tools.lonlat2azizen(lon, lat)

Calculates satellite zenith and azimuth given lon / lat. Assumes sub-satellite longitude at zero degree E.

Parameters:

• lon (float or numpy array) – longitude
• lat (float or numpy array) – latitude

Returns:

• azi (float or numpy array) – satellite azimuth angle
• zen (float or numpy array) – satellite zenith angle