Difference between revisions of "Adding passive species to GEOS-Chem"

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== Overview ==
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This content has been migrated to the [https://hemco.readthedocs.io/en/latest/hco-ref-guide/more-examples.html#assign-emissions-to-passive-species-in-an-external-model '''More configuration examples''' section of <tt>hemco.readthedocs.io</tt>]
 
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Passive species are often used in modeling studies to assess transport from different regions/sources, especially in model intercomparison studies. These species are usually CO-like in that they have the same emissions as CO but with no secondary sources and a fixed-lifetime (no chemistry, wet deposition, or dry deposition). Passive species are not a standard feature of GEOS-Chem, but can be added for individual projects by following a series of steps.
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NOTE: For all intents and purposes, the terms "passive tracers" and "passive species" are identical.  In [[GEOS-Chem v11-01]] and higher versions, the distinction between tracers and species has been eliminated. We can now speak of everything as a "species". Those species that are moved around by the winds and convective mass fluxes&mdash;which were formerly called "tracers"&mdash;are now referred to as "advected species".  For more information, please see [[Species indexing in GEOS-Chem#No more distinction between tracers and species|this post on our ''Species indexing in GEOS-Chem'' wiki page]].
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--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 22:16, 5 December 2016 (UTC)
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== In GEOS-Chem v11-01 and higher versions ==
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The [[HEMCO|HEMCO emissions component]] v1.1.016 and higher versions now contain an extension to specify emissions of a passive species.  This was first introduced into [[GEOS-Chem v11-01#11-01e|GEOS-Chem v11-01e]] and incorporated into the species database in [[GEOS-Chem v11-01#v11-01j|v11-01j]].
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For instructions on how to add passive species, see [[HEMCO_examples#Passive_species|this post on the ''HEMCO examples'' wiki page]].
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--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 21:00, 5 December 2016 (UTC)
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'''''[[GEOS-Chem species units|Previous]] | [[Species indexing in GEOS-Chem|Next]] | [[Guide to species in GEOS-Chem]]'''''
 
'''''[[GEOS-Chem species units|Previous]] | [[Species indexing in GEOS-Chem|Next]] | [[Guide to species in GEOS-Chem]]'''''

Revision as of 18:25, 9 August 2022

Previous | Next | Guide to species in GEOS-Chem

  1. Species in GEOS-Chem
  2. Physical properties of GEOS-Chem species
  3. GEOS-Chem species database
  4. GEOS-Chem species units
  5. Adding passive species to GEOS-Chem
  6. Species indexing in GEOS-Chem


This content has been migrated to the More configuration examples section of hemco.readthedocs.io



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