History collections for methane

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The CH4 collection

The CH4 collection contains diagnostics for loss of CH4 and OH concentration for the CH4 specialty simulation.

Here is a sample definition section for the CH4 collection.

  • If this collection is not already present in the HISTORY.rc file in the GEOS-Chem run directory for your selected simulation, you can copy and paste this into your HISTORY.rc file and edit accordingly.
  • To prevent an individual field from being included in the diagnostic output, place a comment character # in front of the field name.
  • Please see our Legend for History diagnostics page for more information about each of the collection tags.
  CH4.template:               '%y4%m2%d2_%h2%n2z.nc4',
  CH4.format:                 'CFIO',
  CH4.frequency:              00000100 000000
  CH4.duration:               00000100 000000
  CH4.mode:                   'time-averaged'
  CH4.fields:                 'OHconcAfterChem               ', 'GIGCchem',
                              'LossCH4byClinTrop             ', 'GIGCchem',
                              'LossCH4byOHinTrop             ', 'GIGCchem',
                              'LossCH4inStrat                ', 'GIGCchem',
::

This table describes the diagnostic quantities belonging to the CH4 collection:

Diagnostic name Description Units Wildcards Simulations Bpch equiv. Notes
LossCH4byClinTrop Loss of CH4 by reaction with Cl in the troposphere kg/s
LossCH4byOHinTrop Loss of CH4 by reaction with OH in the troposphere kg/s
LossCH4inStrat Loss of CH4 in the stratosphere kg/s
OHconcAfterChem OH concentration after chemistry kg/s

--Bob Yantosca (talk) 16:31, 19 July 2019 (UTC)

The ConcAfterChem collection

The ConcAfterChem collection is listed on our History collections for chemistry and photolysis page.

--Bob Yantosca (talk) 16:31, 19 July 2019 (UTC)