HEMCO_Diagn.rc

In your run directory, you will find a copy of the HEMCO diagnostic configuration file (named HEMCO_Diagn.rc) corresponding to the HEMCO_Config.rc file. You will only need to edit this file if you wish to change the default diagnostic output configuration.

Format

A snippet of the HEMCO_Diagn.rc for the fullchem simulation is shown below:

###############################################################################
#####  ALD2 emissions                                                     #####
###############################################################################
EmisALD2_Total      ALD2   -1     -1  -1   3   kg/m2/s  ALD2_emission_flux_from_all_sectors
EmisALD2_Anthro     ALD2   0      1   -1   3   kg/m2/s  ALD2_emission_flux_from_anthropogenic
EmisALD2_BioBurn    ALD2   111    -1  -1   2   kg/m2/s  ALD2_emission_flux_from_biomass_burning
EmisALD2_Biogenic   ALD2   0      4   -1   2   kg/m2/s  ALD2_emission_flux_from_biogenic_sources
EmisALD2_Ocean      ALD2   101    -1  -1   2   kg/m2/s  ALD2_emission_flux_from_ocean
EmisALD2_PlantDecay ALD2   0      3   -1   2   kg/m2/s  ALD2_emission_flux_from_decaying_plants
EmisALD2_Ship       ALD2   0      10  -1   2   kg/m2/s  ALD2_emission_flux_from_ships

Columns:

  1. netCDF variable name for the requested diagnostic quantity

  2. Species name

  3. Extension number (-1 means sum over all extensions)

  4. Category (-1 means sum over all categories)

  5. Hierarchy (-1 means sum over all hierarchies)

  6. Dimension of data (1: scalar, 2: lon-lat, 3: lon-lat-lev)

  7. Units

  8. Value for the long_name netCDF variable attribute

The prefix (e.g. OutputDir/HEMCO_diagnostics) for HEMCO diagnostics output files are specified in the Settings section of the HEMCO_Config.rc file.

Usage differences between GCHP and GEOS-Chem Classic

Emissions diagnostics (beginning with Emis or Inv) listed in HEMCO_Diagn.rc will not be archived to disk unless they are also included in the Emissions collection of the GCHP HISTORY.rc file. This is because GCHP relies on the MAPL HISTORY component for diagnostic archival, and thus all diagnostic ouptuts must be listed in the GCHP HISTORY.rc file.

Also note that the GCHP Emissions collection is archived such that level 1 corresponds to the top-of-atmosphere and level 72 corresponds to the surface (aka lev:positive = 'down'). This is in contrast to all other GCHP diagnostic collections, where level 1 is the surface and level 72 is top-of-atmopshere (aka lev:positive = 'up').