wrf.omega¶
- wrf.omega(qv, tkel, w, pres, meta=True)¶
Return omega.
This function calculates omega (dp/dt) [Pa s-1].
This is the raw computational algorithm and does not extract any variables from WRF output files. Use
wrf.getvar()
to both extract and compute diagnostic variables.- Parameters:
qv (
xarray.DataArray
ornumpy.ndarray
) –Water vapor mixing ratio in [kg/kg] with the rightmost dimensions as bottom_top x south_north x west_east.
Note
This variable must be supplied as a
xarray.DataArray
in order to copy the dimension names to the output. Otherwise, default names will be used.tkel (
xarray.DataArray
ornumpy.ndarray
) – Temperature in [K] with the same dimensionality as qv.w (
xarray.DataArray
ornumpy.ndarray
) – The vertical velocity [m s-1] with the same dimensionality as qv.pres (
xarray.DataArray
ornumpy.ndarray
) – Full pressure (perturbation + base state pressure) in [Pa] with the same dimensionality as qv.meta (
bool
) – Set to False to disable metadata and returnnumpy.ndarray
instead ofxarray.DataArray
. Default is True.
Warning
The input arrays must not contain any missing/fill values or
numpy.nan
values.- Returns:
Omega. If xarray is enabled and the meta parameter is True, then the result will be an
xarray.DataArray
object. Otherwise, the result will be anumpy.ndarray
object with no metadata.- Return type:
See also