wradlib.georef.projection.get_earth_radius¶
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wradlib.georef.projection.get_earth_radius(latitude, sr=None)¶ Get the radius of the Earth (in km) for a given Spheroid model (sr) at a given position.
\[R^2 = \frac{a^4 \cos(f)^2 + b^4 \sin(f)^2} {a^2 \cos(f)^2 + b^2 \sin(f)^2}\]- Parameters
sr (osr object) – spatial reference
latitude (float) – geodetic latitude in degrees
- Returns
radius (float) – earth radius in meter