wradlib.zr.r_to_z#
- wradlib.zr.r_to_z(r, a=200.0, b=1.6)[source]#
Calculates reflectivity from rain rates using a power law Z/R relationship Z = a*R**b
- Parameters:
r (
float
ornumpy.ndarray
) – Corresponds to rainfall intensity in mm/ha (
float
) – Parameter a of the Z/R relationship Standard value according to Marshall-Palmer is a=200., b=1.6b (
float
) – Parameter b of the Z/R relationship Standard value according to Marshall-Palmer is b=1.6
Note
The German Weather Service uses a=256 and b=1.42 instead of the Marshall-Palmer defaults.
- Returns:
output (
float
ornumpy.ndarray
) – reflectivity in mm**6/m**3