Difference between revisions of "GEOS-Chem chemistry mechanisms"

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(NOx-Ox-hydrocarbon-aerosol chemistry)
(Mechanisms in GEOS-Chem v9-02 and later versions)
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=== Mechanisms in GEOS-Chem v9-02 and later versions ===
 
=== Mechanisms in GEOS-Chem v9-02 and later versions ===
  
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Several modifications were made to the chemistry mechanisms that shipped with [[GEOS-Chem v9-01-03]].
  
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The existing
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In GEOS-Chem v9-01-03, users could select from one of four pre-defined chemistry mechanisms:
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{| border=1 cellspacing=0 cellpadding=5
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|-bgcolor="#CCCCCC"
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!width="100px"|Mechanism
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!width="350x"|Description
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!width="175px"|Nickname
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!width="150px"|Solvers
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|-valign="top"
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|[[NOx-Ox-HC-aerosol|standard]]
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|
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*[[NOx-Ox-HC-aerosol|NOx-Ox-hydrocarbon-aerosol]] species
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*PLUS [[Bromine chemistry mechanism|bromine species]]
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*PLUS [[Updating_standard_chemistry_with_JPL_10-6|Updates to inorganic chemistry reactions (cf. JPL 10-6)]]
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*PLUS [[Methyl peroxy nitrate chemistry]]
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*PLUS [[New isoprene scheme|Isoprene oxidation species chemistry (aka "Caltech isoprene scheme")]]
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*PLUS [[New_isoprene_scheme#Update_One_-_RO2.2BHO2_Reaction_Rate|Fix RO2+HO2 rate constant]]
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*PLUS [[New_isoprene_scheme#NO3_aerosol_reactive_uptake_coefficient|Increase of NO3 uptake by aerosol]]
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*PLUS [[NOx-Ox-HC-aerosol#Removal_of_NOx_and_Ox_partitioning|Removal_of_NOx_and_Ox_partitioning]]
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*PLUS [[ChemTelecon20111202|Inhibition of N2O5 uptake by nitrate aerosol]]
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*PLUS [[NOx-Ox-HC-aerosol#Improved_HO2_uptake|Improved HO2 uptake by aerosol]]
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|Full-chemistry or fullchem
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|
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*SMVGEAR
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*KPP
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|-valign="top"
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|[[Secondary organic aerosols|SOA]]
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|
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*NOx-Ox-hydrocarbon-aerosol species
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*PLUS secondary organic aerosol species
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|SOA
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|
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*SMVGEAR
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*KPP-
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|-valign="top"
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|[[Dicarbonyls simulation|Dicarbonyls]]
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|
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*NOx-Ox-hydrocarbon-aerosol species
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*PLUS dicarbonyl species
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|Dicarbonyls
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|
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*SMVGEAR only
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|}
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--[[User:Bmy|Bob Y.]] 17:17, 30 September 2013 (EDT)
  
 
=== Solvers ===
 
=== Solvers ===

Revision as of 21:17, 30 September 2013

On this page, we provide an overview of the chemistry mechanisms used in GEOS-Chem.

Overview

NOx-Ox-hydrocarbon-aerosol chemistry and variants

The standard NOx-Ox-hydrocarbon-aerosol (aka "full-chemistry") simulation has undergone several updates in recent GEOS-Chem versions. We

Mechanisms in GEOS-Chem v9-01-03 and prior versions

In GEOS-Chem v9-01-03, users could select from one of four pre-defined chemistry mechanisms:

Mechanism Description Nickname Solvers
standard Full-chemistry or fullchem
  • SMVGEAR
  • KPP
SOA
  • NOx-Ox-hydrocarbon-aerosol species
  • PLUS secondary organic aerosol species
SOA
  • SMVGEAR
  • KPP-
Dicarbonyls
  • NOx-Ox-hydrocarbon-aerosol species
  • PLUS dicarbonyl species
Dicarbonyls
  • SMVGEAR only
isoprene
  • NOx-Ox-hydrocarbon-aerosol species
  • PLUS isoprene oxidation products
Caltech isoprene scheme,
Paulot isoprene scheme
  • SMVGEAR
  • KPP

The bromine tracers and species were added to the standard mechanism just prior to the release of GEOS-Chem v9-01-03.

-Bob Y. 17:00, 30 September 2013 (EDT)

Mechanisms in GEOS-Chem v9-02 and later versions

Several modifications were made to the chemistry mechanisms that shipped with GEOS-Chem v9-01-03.


The existing In GEOS-Chem v9-01-03, users could select from one of four pre-defined chemistry mechanisms:

Mechanism Description Nickname Solvers
standard Full-chemistry or fullchem
  • SMVGEAR
  • KPP
SOA
  • NOx-Ox-hydrocarbon-aerosol species
  • PLUS secondary organic aerosol species
SOA
  • SMVGEAR
  • KPP-
Dicarbonyls
  • NOx-Ox-hydrocarbon-aerosol species
  • PLUS dicarbonyl species
Dicarbonyls
  • SMVGEAR only

--Bob Y. 17:17, 30 September 2013 (EDT)

Solvers