wrf.slp¶

wrf.slp(height, tkel, pres, qv, meta=True, units=u'hPa')¶

Return the sea level pressure.

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:

height (xarray.DataArray or numpy.ndarray) – Geopotential height in [m] with the rightmost dimensions being bottom_top x south_north x west_east.
tkel (xarray.DataArray or numpy.ndarray) – Temperature in [K] with same dimensionality as height.
pres (xarray.DataArray or numpy.ndarray) –
Full pressure (perturbation + base state pressure) in [Pa] with the same dimensionality as height.

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.
qv (xarray.DataArray or numpy.ndarray) – Water vapor mixing ratio in [kg/kg] with the same dimensionality as height.
meta (bool) – Set to False to disable metadata and return numpy.ndarray instead of xarray.DataArray. Default is True.
units (str) – The desired units. Refer to the getvar() product table for a list of available units for ‘slp’. Default is ‘hPa’.

Warning

The input arrays must not contain any missing/fill values or numpy.nan values.

Returns:	The sea level pressure. If xarray is enabled and the meta parameter is True, then the result will be an `xarray.DataArray` object. Otherwise, the result will be a `numpy.ndarray` object with no metadata.
Return type:	`xarray.DataArray` or `numpy.ndarray`