Unidata/MetPy

            r'^(z|lv_|bottom_top|sigma|h(ei)?ght|altitude|depth|isobaric|pres|isotherm)'
  | ``(thta, u, v, dx, dy, dim_order='yx')``                                                                         |
       Changed signature from ``(thta, u, v, dx, dy, dim_order='yx')``
    dpres = gempak.PRES.values
    pres = 1
    thta = 2
                lambda grid: grid if grid.PARM in parameter else False,
                            col_head.SELV,
                'SELV': col_head.SELV,
                                col_head.SELV,
                                row_head.SELV,
                'SELV': row_head.SELV,
                'SELV': col_head.SELV,
# GFS, NAM, RAP, or other gridded dataset (e.g., NARR).
# This attribute can be set to False if the vector components are grid relative (e.g., for NAM
    components that are earth-relative. The primary exception is NAM output with wind
                                    col_head.SELV,
                                    row_head.SELV,