unipressure

unipressure(lnsp[, levels][, lnsp_code])
unipressure(lnsp, fs_levels[, lnsp_code])

Computes the pressure in Pa on a list of ECMWF model levels from lnsp (logarithm of surface pressure).

Parameters

  • lnsp (Fieldset) – lnsp fieldset defined on model level 1

  • fs_levels (Fieldset) – fieldset defining the target model levels

  • lnsp_code (number) – ecCodes paramId for lnsp

  • levels (list) – list of target model levels to compute the pressure on

Return type

Fieldset

lnsp must contain an lnsp field, which is identified by its ecCodes paramId. By default the value of 152 is used but it can be overridden by the optional lnsp_code.

The list of target model levels to compute the pressure on depends on the actual arguments:

  • if no fs_levels is specified the pressure is computed on the full model level range defined by the GRIB header of lnsp.

  • if fs_levels is specified the pressure is computed on all the model levels in fs_levels.

  • if levels is specified it defines the list of target model levels the pressure will be computed on.

A missing value in lnsp will result in a missing value in the corresponding place in the output fieldset.