GEOS-Chem chemistry mechanisms: Difference between revisions

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On this page, we provide an overview of the chemistry mechanisms used in GEOS-Chem.
#REDIRECT [[Simulations using KPP-built mechanisms]]
 
== Overview ==
 
== NOx-Ox-hydrocarbon-aerosol chemistry and variants ==
 
The NOx-Ox-hydrocarbon-aerosol (aka "full-chemistry") simulations have undergone several updates in recent GEOS-Chem versions.  We provide a summary of recent updates made to the various mechanisms.
 
=== 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:
 
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="100px"|Mechanism
!width="500x"|Description
!width="175px"|Nickname
!width="150px"|Solvers
 
|-valign="top"
|[[NOx-Ox-HC-aerosol|standard]]
|
*NOx-Ox-hydrocarbon-aerosol species
*PLUS [[Bromine chemistry mechanism|bromine species]]
|Full-chemistry or fullchem
|
*SMVGEAR
*KPP
 
|-valign="top"
|[[Secondary organic aerosols|SOA]]
|
*NOx-Ox-hydrocarbon-aerosol species
*PLUS secondary organic aerosol species
|SOA
|
*SMVGEAR
*KPP-
 
|-valign="top"
|[[Dicarbonyls simulation|Dicarbonyls]]
|
*NOx-Ox-hydrocarbon-aerosol species
*PLUS dicarbonyl species
|Dicarbonyls
|
*SMVGEAR only
 
|-valign="top"
|[[New isoprene scheme|isoprene]]
|
*NOx-Ox-hydrocarbon-aerosol species
*PLUS isoprene oxidation products
|Caltech isoprene scheme,<br>Paulot isoprene scheme
|
*SMVGEAR
*KPP
|}
 
The [[Bromine chemistry mechanism|bromine tracers and species]] were added to the standard mechanism just prior to the release of [[GEOS-Chem v9-01-03]].
 
-[[User:Bmy|Bob Y.]] 17:00, 30 September 2013 (EDT)
 
=== Mechanisms in GEOS-Chem v9-02 and later versions ===
 
Several modifications were made to the above-mentioned chemistry mechanisms in [[GEOS-Chem v9-02]].
 
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="100px"|Mechanism
!width="500px"|Description
!width="175px"|Nickname
!width="150px"|Solvers
 
|-valign="top"
|[[NOx-Ox-HC-aerosol|standard]]
|
*[[NOx-Ox-HC-aerosol|NOx-Ox-hydrocarbon-aerosol]] species
*PLUS [[Bromine chemistry mechanism|bromine species]]
*PLUS [[Updating_standard_chemistry_with_JPL_10-6|Updates to inorganic chemistry reactions (cf. JPL 10-6)]]
*PLUS [[Methyl peroxy nitrate chemistry]]
*PLUS [[New isoprene scheme|Isoprene oxidation species chemistry (aka "Caltech isoprene scheme")]]
*PLUS [[New_isoprene_scheme#Update_One_-_RO2.2BHO2_Reaction_Rate|Fix RO2+HO2 rate constant]]
*PLUS [[New_isoprene_scheme#NO3_aerosol_reactive_uptake_coefficient|Increase of NO3 uptake by aerosol]]
*PLUS [[NOx-Ox-HC-aerosol#Removal_of_NOx_and_Ox_partitioning|Removal of NOx and Ox partitioning]]
*PLUS [[ChemTelecon20111202|Inhibition of N2O5 uptake by nitrate aerosol]]
*PLUS [[NOx-Ox-HC-aerosol#Improved_HO2_uptake|Improved HO2 uptake by aerosol]]
|Full-chemistry or fullchem
|
*SMVGEAR
*KPP
 
|-valign="top"
|[[Secondary organic aerosols|SOA]]
|
*Everything in the "standard" simulation listed above
*PLUS Updated SOA species
*PLUS [[Secondary_organic_aerosols#SOA_simulation_with_semi-volatile_POA|Semi-volatile primary organic aerosol (OPTIONAL)]]
|SOA
|
*SMVGEAR
*KPP-
 
|-valign="top"
|[[Dicarbonyls simulation|Dicarbonyls]]
|
*NOx-Ox-hydrocarbon-aerosol species
*PLUS dicarbonyl species
|Dicarbonyls
|
*SMVGEAR only
 
|}
 
--[[User:Bmy|Bob Y.]] 17:22, 30 September 2013 (EDT)
 
=== Solvers ===

Latest revision as of 15:32, 21 May 2024

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