pydda.constraints.make_constraint_from_wrf

pydda.constraints.make_constraint_from_wrf(Grid, file_path, wrf_time, radar_loc, vel_field=None)[source]

This function makes an initalization field based off of the u and w from a WRF run in netCDF format. Only u and v are used from the WRF netCDF file.

Parameters
Grid: Py-ART Grid object

This is the Py-ART Grid containing the coordinates for the analysis grid.

file_path: str

This is the path to the WRF grid

wrf_time: datetime

The timestep to derive the intialization field from.

radar_loc: tuple

The (X, Y) location of the radar in the WRF grid. The output coordinate system will be centered around this location and given the same grid specification that is specified in Grid.

vel_field: str, or None

This string contains the name of the velocity field in the Grid. None will try to automatically detect this value.

Returns
Grid: Py-ART Grid object

This Py-ART Grid will contain the model u, v, and w.