pyart.retrieve.vad_michelson#

pyart.retrieve.vad_michelson(radar, vel_field=None, z_want=None, gatefilter=None, sign=1)[source]#

Velocity azimuth display.

Creates a VAD object containing U Wind, V Wind and height that can then be used to plot and produce the velocity azimuth display.

Parameters:

  • radar (Radar) – Radar object used.

  • vel_field (string, optional) – Velocity field to use for VAD calculation.

  • z_want (array, optional) – Heights for where to sample vads from. None will result in np.linespace(0, 10000, 100).

  • gatefilter (GateFilter, optional) – A GateFilter indicating radar gates that should be excluded from the import vad calculation.

  • sign (int, optional) – Sign convention which the radial velocities in the volume created from the sounding data will will. This should match the convention used in the radar data. A value of 1 represents when positive values velocities are towards the radar, -1 represents when negative velocities are towards the radar.

Returns:

vad (HorizontalWindProfile) – A velocity azimuth display object containing height, speed, direction, u_wind, v_wind from a radar object.

References

Michelson, D. B., Andersson, T., Koistinen, J., Collier, C. G., Riedl, J., Szturc, J., Gjertsen, U., Nielsen, A. and Overgaard, S. (2000) BALTEX Radar Data Centre Products and their Methodologies. In SMHI Reports. Meteorology and Climatology. Swedish Meteorological and Hydrological Institute, Norrkoping.