wradlib.zr.ZRMethods.z_to_r#

ZRMethods.z_to_r(**kwargs)[source]#

Conversion from reflectivities to rain rates.

Calculates rain rates from radar reflectivities using a power law Z/R relationship Z = a*R**b

Parameters

obj (xarray.DataArray) – Corresponds to reflectivity Z in mm**6/m**3

Keyword Arguments

  • a (float) – Parameter a of the Z/R-relationship Standard value according to Marshall-Palmer is a=200., b=1.6

  • b (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 (xarray.DataArray) – rainfall intensity in mm/h