wradlib.zr.ZRMethods.r_to_z#

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

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

Parameters

  • obj (xarray.DataArray) – Corresponds to rainfall intensity in mm/h

  • 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) – reflectivity in mm**6/m**3