The HEMCO Diagn.rc file

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Overview

You can archive any type of emissions (or other quantity) computed by the HEMCO emissions component to netCDF-format diagnostic output. The HEMCO_Diagn.rc file controls diagnostic output options for HEMCO.

Sample HEMCO_Diagn.rc file

Here is a snapshot of the HEMCO_Config.rc from the geosfp_4x5_benchmark run directory.

#------------------------------------------------------------------------------
#                  GEOS-Chem Global Chemical Transport Model                  !
#------------------------------------------------------------------------------
#BOP
#
# !MODULE: HEMCO_Diagn.rc 
#
# !DESCRIPTION: Configuration file for netCDF diagnostic output from HEMCO.
#\\
#\\
# !REMARKS:
#  Customized for the benchmark simulation.
#  TO DO: Add long names, which are used for netCDF variable attributes.
#
# !REVISION HISTORY:
#  13 Feb 2018 - E. Lundgren - Initial version
#EOP
#------------------------------------------------------------------------------
#BOC
# Name             Spec  ExtNr  Cat Hier Dim OutUnit       LongName

###############################################################################
#####   ACET emissions (in bpch ND11, ND28, ND34, ND36, ND46)             #####
###############################################################################
EmisACET_Total     ACET   -1     -1  -1   3   molec/cm2/s  
EmisACET_Anthro    ACET   0      1   -1   3   atomsC/cm2/s
EmisACET_BioBurn   ACET   111    -1  -1   2   atomsC/cm2/s
EmisACET_Biofuel   ACET   0      2   -1   2   atomsC/cm2/s
EmisACET_Biogenic  ACET   108    -1  -1   2   atomsC/cm2/s
EmisACET_DirectBio ACET   108    -1  -1   2   atomsC/cm2/s ACET_from_direct_emissions
EmisACET_MethylBut ACET   108    -1  -1   2   atomsC/cm2/s ACET_from_methyl_butenol
EmisACET_Monoterp  ACET   108    -1  -1   2   atomsC/cm2/s ACET_from_monoterpenes
EmisACET_Ocean     ACET   101    -1  -1   2   atomsC/cm2/s ACET_from_ocean_source

###############################################################################
#####  ALD2 emissions (in bpch ND28, ND34, ND36, ND46. ALD2_Ocean         #####
#####  and is new)                                                        #####
###############################################################################
EmisALD2_Total     ALD2   -1     -1  -1   3   molec/cm2/s
EmisALD2_Anthro    ALD2   0      1   -1   3   atomsC/cm2/s
EmisALD2_BioBurn   ALD2   111    -1  -1   2   atomsC/cm2/s
EmisALD2_Biofuel   ALD2   0      2   -1   2   atomsC/cm2/s
EmisALD2_Biogenic  ALD2   108    -1  -1   2   atomsC/cm2/s
EmisALD2_Ocean     ALD2   101    -1  -1   2   atomsC/cm2/s
EmisALD2_Senesc    ALD2   0      4   -1   2   atomsC/cm2/s

As you can see, you can archive not only the total emissions for a given species, but also the individual emission sectors. This gives you much more flexibility over the GEOS-Chem bpch diagnostic output.

Once you have your HEMCO_Diagn.rc file customized for your given simulation, make sure that you have these settings in your HEMCO_Config.rc file:

DiagnFile:                   HEMCO_Diagn.rc
DiagnPrefix:                 HEMCO_diagnostics
DiagnFreq:                   End

where:

  • DiagnFile specifies the location of the HEMCO_Diagn.rc file.
  • DiagnPrefix specifies the the prefix for all HEMCO-generated diagnostic files.
  • DiagnFreq specifies the diagnostic archival frequency.

For more information about how to archive diagnostics from HEMCO, please see:

  1. The Diagnostics section of The HEMCO User's Guide
  2. Guide to HEMCO emissions diagnostics

--Bob Yantosca (talk) 15:53, 23 July 2019 (UTC)



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