met_guess::
!var     level    crtm_use    desc              orig_name
  ps        1      -1         surface_pressure     ps
  oz       64       2         ozone                ozone
::

state_vector::  
!var     level  itracer source     funcof
 oz       64      1     met_guess    oz
::

control_vector::
!var     level  itracer as/tsfc_sdv  an_amp0   source  funcof
 oz       64      1       0.75        -1.0     state    oz
::