pyrad.proc.process_zdr_snow#

pyrad.proc.process_zdr_snow(procstatus, dscfg, radar_list=None)[source]#

Keeps only suitable data to evaluate the differential reflectivity in snow

Parameters:

  • procstatus (int) – Processing status: 0 initializing, 1 processing volume, 2 post-processing

  • dscfg (dictionary of dictionaries) –

    data set configuration. Accepted Configuration Keywords:

    datatype : list of strings. Dataset keyword
    The input data types, must contain
    "dBZ" or "dBZc", and,
    "ZDR" or "ZDRc", and,
    "PhiDP" or "PhiDPc", and,
    "uRhoHV" or "RhoHV" or "RhoHVc", and,
    "hydro", and,
    "TEMP" (Optional), and,
    "SNRh" or "SNRv" (Optional, used to filter with SNRmin and SNRmax)
rmin : float. Dataset keyword
    minimum range where to look for rain [m]. Default 1000.
rmax : float. Dataset keyword
    maximum range where to look for rain [m]. Default 50000.
Zmin : float. Dataset keyword
    minimum reflectivity to consider the bin as snow [dBZ].
    Default 0.
Zmax : float. Dataset keyword
    maximum reflectivity to consider the bin as snow [dBZ]
    Default 30.
SNRmin : float. Dataset keyword
    minimum SNR to consider the bin as snow [dB].
    Default 10.
SNRmax : float. Dataset keyword
    maximum SNR to consider the bin as snow [dB]
    Default 50.
RhoHVmin : float. Dataset keyword
    minimum RhoHV to consider the bin as snow
    Default 0.97
PhiDPmax : float. Dataset keyword
    maximum PhiDP to consider the bin as snow [deg]
    Default 10.
elmax : float. Dataset keyword
    maximum elevation angle where to look for snow [deg]
    Default None.
KDPmax : float. Dataset keyword
    maximum KDP to consider the bin as snow [deg]
    Default None
TEMPmin : float. Dataset keyword
    minimum temperature to consider the bin as snow [deg C].
    Default None
TEMPmax : float. Dataset keyword
    maximum temperature to consider the bin as snow [deg C]
    Default None
hydroclass : list of ints. Dataset keyword
    list of hydrometeor classes to keep for the analysis
    Default [2] (dry snow)

  • radar_list (list of Radar objects) – Optional. list of radar objects

Returns:

  • new_dataset (dict) – dictionary containing the output field “ZDR_snow”

  • ind_rad (int) – radar index