Difference between revisions of "Mean OH concentration"

From Geos-chem
Jump to: navigation, search
(Mean OH in GEOS-Chem v9)
(Mean OH in GEOS-Chem v8)
Line 473: Line 473:
  
 
=== Mean OH in GEOS-Chem v8 ===
 
=== Mean OH in GEOS-Chem v8 ===
 +
The following table chronicles the evolution of the mean OH value from several different GEOS-Chem simulations.  All benchmark simulations were conducted at [http://acmg.seas.harvard.edu/geos/doc/man/appendix_2.html#GMAO_4x5 4 x 5 resolution] unless noted otherwise.
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|- bgcolor="#CCCCCC"
 
|- bgcolor="#CCCCCC"
!Benchmark
+
!width="125px"|Benchmark
!Met Fields & Year
+
!width="80px"|Met Fields & Year
!Mean OH<br>[10<sup>5</sup> molec cm<sup>-3</sup>]  
+
!width="125px"|Mean OH<br>[10<sup>5</sup> molec cm<sup>-3</sup>]  
!Change from<br>previous version<br>[10<sup>5</sup> molec cm<sup>-3</sup>]
+
!width="125px"|Change from<br>prev. version<br>[10<sup>5</sup> molec cm<sup>-3</sup>]
!Important updates in this benchmark simulation
+
!width="500px"|Important updates in this benchmark simulation
!References
+
!width="175px"|References
  
|-bgcolor="CCFFFF"
+
|-valign="top"
!colspan="6"|GEOS-Chem version 8
+
 
+
|-align="center" valign="top"
+
 
| [[GEOS-Chem v8-02-04#Run2|v8-02-04-Run2]]
 
| [[GEOS-Chem v8-02-04#Run2|v8-02-04-Run2]]
 
| GEOS-5.1.0 2005
 
| GEOS-5.1.0 2005
 
| <tt>11.067</tt>
 
| <tt>11.067</tt>
 
| <tt>+0.019<br>(+0.17%)</tt>
 
| <tt>+0.019<br>(+0.17%)</tt>
|<div align="left">
+
|
 
*Linoz stratospheric ozone chemistry used instead of SYNOZ scheme
 
*Linoz stratospheric ozone chemistry used instead of SYNOZ scheme
</div>
+
|  
|<div align="left">
+
 
*[[Linoz stratospheric ozone chemistry|Linoz wiki page]]
 
*[[Linoz stratospheric ozone chemistry|Linoz wiki page]]
 
*[[Talk:GEOS-Chem_v8-02-04|Talk:v8-02-04 page]]
 
*[[Talk:GEOS-Chem_v8-02-04|Talk:v8-02-04 page]]
</div>
+
 
|-align="center" valign="top"
+
|-valign="top"
 
| [[GEOS-Chem v8-02-04#Run1|v8-02-04-Run1]]  
 
| [[GEOS-Chem v8-02-04#Run1|v8-02-04-Run1]]  
 
| GEOS-5.1.0 2005
 
| GEOS-5.1.0 2005
 
| <tt>11.048</tt>
 
| <tt>11.048</tt>
 
| <tt>+0.598<br>(+5.72%)</tt>
 
| <tt>+0.598<br>(+5.72%)</tt>
|<div align="left">
+
|
 
*MEGAN hybrid model with MODIS-derived LAI
 
*MEGAN hybrid model with MODIS-derived LAI
</div>
+
|  
|<div align="left">
+
 
*[[MEGAN biogenic emissions|MEGAN wiki page]]
 
*[[MEGAN biogenic emissions|MEGAN wiki page]]
 
*[[Talk:GEOS-Chem_v8-02-04|Talk:v8-02-04 page]]
 
*[[Talk:GEOS-Chem_v8-02-04|Talk:v8-02-04 page]]
</div>
+
 
|-align="center" valign="top"
+
|-valign="top"
 
| [[GEOS-Chem v8-02-04#Run0|v8-02-04-Run0]]  
 
| [[GEOS-Chem v8-02-04#Run0|v8-02-04-Run0]]  
 
| GEOS-5.1.0 2005
 
| GEOS-5.1.0 2005
 
| <tt>10.450</tt>
 
| <tt>10.450</tt>
 
| <tt>-1.362<br>(-11.53%)</tt>
 
| <tt>-1.362<br>(-11.53%)</tt>
|<div align="left">
+
|
 
*MEGAN hybrid model with AVHRR-derived LAI
 
*MEGAN hybrid model with AVHRR-derived LAI
 
*EPA/NEI2005 emissions
 
*EPA/NEI2005 emissions
 
*Non-local PBL mixing scheme
 
*Non-local PBL mixing scheme
</div>
+
|
|<div align="left">
+
 
*[[MEGAN biogenic emissions|MEGAN wiki page]]
 
*[[MEGAN biogenic emissions|MEGAN wiki page]]
 
*[[EPA/NEI05 North American emissions|NEI2005 wiki page]]
 
*[[EPA/NEI05 North American emissions|NEI2005 wiki page]]
 
*[[Talk:GEOS-Chem_v8-02-04|Talk:v8-02-04 page]]
 
*[[Talk:GEOS-Chem_v8-02-04|Talk:v8-02-04 page]]
 
*[http://acmg.seas.harvard.edu/publications/jlin5_2009_AE_1.pdf Lin et al 2009]
 
*[http://acmg.seas.harvard.edu/publications/jlin5_2009_AE_1.pdf Lin et al 2009]
</div>
+
 
|-align="center" valign="top"
+
|-valign="top"
 
| [[GEOS-Chem v8-02-01#Run0|v8-02-01-Run0]]
 
| [[GEOS-Chem v8-02-01#Run0|v8-02-01-Run0]]
 
| GEOS-5.1.0 2005
 
| GEOS-5.1.0 2005
 
| <tt>11.812</tt>
 
| <tt>11.812</tt>
 
| <tt>+0.713<br>(+6.42%)</tt>
 
| <tt>+0.713<br>(+6.42%)</tt>
|<div align="left">
+
|
 
*Updated chemical mechanism: <tt>globchem.dat</tt>
 
*Updated chemical mechanism: <tt>globchem.dat</tt>
 
*Updated photolysis rxn rates: <tt>jv_spec.dat, ratj.d</tt>
 
*Updated photolysis rxn rates: <tt>jv_spec.dat, ratj.d</tt>
  
 
:NOTE: there was [[Chemistry Issues#near-IR photolysis of HNO4|a bug in near IR photolysis of HNO4 and HCHO]] in the <tt>jv_spec.dat</tt> and <tt>ratj.d</tt> files.  This was finally resolved in v8-02-04.  We recommend all users of v8-02-01, v8-02-02, and v8-02-03 to use these updated [http://acmg.seas.harvard.edu/geos/wiki_docs/chemistry/jv_spec.dat <tt>jv_spec.dat</tt>] and [http://acmg.seas.harvard.edu/geos/wiki_docs/chemistry/ratj.d <tt>ratj.d</tt>] files.
 
:NOTE: there was [[Chemistry Issues#near-IR photolysis of HNO4|a bug in near IR photolysis of HNO4 and HCHO]] in the <tt>jv_spec.dat</tt> and <tt>ratj.d</tt> files.  This was finally resolved in v8-02-04.  We recommend all users of v8-02-01, v8-02-02, and v8-02-03 to use these updated [http://acmg.seas.harvard.edu/geos/wiki_docs/chemistry/jv_spec.dat <tt>jv_spec.dat</tt>] and [http://acmg.seas.harvard.edu/geos/wiki_docs/chemistry/ratj.d <tt>ratj.d</tt>] files.
</div>
+
|  
|<div align="left">
+
 
*[http://acmg.seas.harvard.edu/geos/wiki_docs/chemistry/chemistry_updates_v5.pdf Chemistry mechanism document]
 
*[http://acmg.seas.harvard.edu/geos/wiki_docs/chemistry/chemistry_updates_v5.pdf Chemistry mechanism document]
 
*[[Photolysis mechanism|FAST-J wiki page]]
 
*[[Photolysis mechanism|FAST-J wiki page]]
</div>
+
 
|-align="center" valign="top"
+
|-valign="top"
 
| [[GEOS-Chem v8-01-04#Run2|v8-01-04-Run2]]
 
| [[GEOS-Chem v8-01-04#Run2|v8-01-04-Run2]]
 
| GEOS-5.1.0 2005
 
| GEOS-5.1.0 2005
 
| <tt>11.099</tt>
 
| <tt>11.099</tt>
 
| <tt>+0.805<br>(+7.82%)</tt>
 
| <tt>+0.805<br>(+7.82%)</tt>
|<div align="left">
+
|
 
*Updated to the newer GEOS-5.1.0 met data product
 
*Updated to the newer GEOS-5.1.0 met data product
 
*Switched to [http://acmg.seas.harvard.edu/geos/wiki_docs/geos5/GEOS-5_cloud_regridding_equations.pdf Hongyu Liu's regridding algorithm for optical depth]
 
*Switched to [http://acmg.seas.harvard.edu/geos/wiki_docs/geos5/GEOS-5_cloud_regridding_equations.pdf Hongyu Liu's regridding algorithm for optical depth]
</div>
+
|  
|<div align="left">
+
 
*[[GEOS-5 met field reprocessing|GEOS-5 met field reprocessing wiki page]]
 
*[[GEOS-5 met field reprocessing|GEOS-5 met field reprocessing wiki page]]
 
*[[GEOS-5 issues|GEOS-5 issues wiki page]]
 
*[[GEOS-5 issues|GEOS-5 issues wiki page]]
</div>
+
 
|-align="center" valign="top"
+
|-valign="top"
 
| [[GEOS-Chem v8-01-04#Run1|v8-01-04-Run1]]
 
| [[GEOS-Chem v8-01-04#Run1|v8-01-04-Run1]]
 
| GEOS-5.0.1 2005
 
| GEOS-5.0.1 2005
 
| <tt>10.294</tt>
 
| <tt>10.294</tt>
 
| <tt>-0.395<br>(-3.69%)</tt>
 
| <tt>-0.395<br>(-3.69%)</tt>
|<div align="left">
+
|
 
*Various emissions updates with regional overwrites
 
*Various emissions updates with regional overwrites
 
*Aaron van Donkelaar et al scale factors for 2005
 
*Aaron van Donkelaar et al scale factors for 2005
 
*Switched from linear to random cloud overlap in FAST-J
 
*Switched from linear to random cloud overlap in FAST-J
</div>
+
|  
|<div align="left">
+
 
*[http://wiki.seas.harvard.edu/geos-chem/images/Anth_emiss_gc_v8-01-04.pdf Anthropogenic emissions in v8-01-04]
 
*[http://wiki.seas.harvard.edu/geos-chem/images/Anth_emiss_gc_v8-01-04.pdf Anthropogenic emissions in v8-01-04]
 
*[[Photolysis mechanism|FAST-J wiki page]]
 
*[[Photolysis mechanism|FAST-J wiki page]]
</div>
+
 
|-align="center" valign="top"
+
|-valign="top"
 
| [[GEOS-Chem v8-01-04#Run0|v8-01-04-Run0]]
 
| [[GEOS-Chem v8-01-04#Run0|v8-01-04-Run0]]
 
| GEOS-5.0.1 2005
 
| GEOS-5.0.1 2005
 
| <tt>10.689</tt>
 
| <tt>10.689</tt>
 
| <tt>-1.351<br>(-11.22%)</tt>
 
| <tt>-1.351<br>(-11.22%)</tt>
|<div align="left">
+
|
 
*[[Biogenic_emissions#Updated_annual_emission_factor_for_Isoprene|New MEGAN annual emission factors for isoprene]]
 
*[[Biogenic_emissions#Updated_annual_emission_factor_for_Isoprene|New MEGAN annual emission factors for isoprene]]
 
*New TPCORE
 
*New TPCORE
 
*[[GEOS-5_issues#Quick_fix_for_optical_depth|Quick fix for optical depths]]
 
*[[GEOS-5_issues#Quick_fix_for_optical_depth|Quick fix for optical depths]]
</div>
+
|  
|<div align="left">
+
 
*[[Biogenic_emissions|Biogenic emissions wiki page]]
 
*[[Biogenic_emissions|Biogenic emissions wiki page]]
 
*[[GEOS-5_issues|GEOS-5 issues wiki page]]
 
*[[GEOS-5_issues|GEOS-5 issues wiki page]]
</div>
+
 
|-align="center" valign="top"
+
|-valign="top"
 
| [[GEOS-Chem v8-01-01#Run1|v8-01-01-Run1]]
 
| [[GEOS-Chem v8-01-01#Run1|v8-01-01-Run1]]
 
| GEOS-5.0.1 2005
 
| GEOS-5.0.1 2005
 
| <tt>12.040</tt>
 
| <tt>12.040</tt>
 
| <tt>+0.034<br>(+0.28%)</tt>
 
| <tt>+0.034<br>(+0.28%)</tt>
|<div align="left">
+
|
 
*Switched aerosol thermodynamical equilibrium scheme from ISORROPIA I to RPMARES
 
*Switched aerosol thermodynamical equilibrium scheme from ISORROPIA I to RPMARES
</div>
+
|  
|<div align="left">
+
 
* [[Aerosol thermodynamical equilibrium|ATE wiki page]]
 
* [[Aerosol thermodynamical equilibrium|ATE wiki page]]
</div>
+
 
|-align="center" valign="top"
+
|-valign="top"
 
| [[GEOS-Chem v8-01-01#Run0|v8-01-01-Run0]]
 
| [[GEOS-Chem v8-01-01#Run0|v8-01-01-Run0]]
 
| GEOS-5.0.1 2005
 
| GEOS-5.0.1 2005
 
| <tt>12.006</tt>
 
| <tt>12.006</tt>
 
| <tt>-0.141<br>(-1.16%)</tt>
 
| <tt>-0.141<br>(-1.16%)</tt>
|<div align="left">
+
|
 
*First simulation with GEOS-5 met data
 
*First simulation with GEOS-5 met data
</div>
+
|  
|<div align="left">
+
 
*[[GEOS-5_issues|GEOS-5 issues wiki page]]
 
*[[GEOS-5_issues|GEOS-5 issues wiki page]]
</div>
+
 
 +
|}
  
 
=== Mean OH in GEOS-Chem v7 ===
 
=== Mean OH in GEOS-Chem v7 ===

Revision as of 18:08, 29 March 2018

On this page we track the evolution of the mean OH concentration in GEOS-Chem. This value is an indicator of how "hot" the chemistry is. Please also see the related topic about the methyl chloroform lifetime in GEOS-Chem.

Computation of the mean OH diagnostic

The mean OH diagnostic in GEOS-Chem is computed in diag_pl_mod.f.

Routine DO_DIAG_OH sums up the tropospheric air mass and mass-weighted OH mass after each call to the chemistry solver. The summing happens in these lines of code:

  ! Sum air mass term into AIR_MASS array
  XAIRMASS        = AIRDENS(JLOOP)    * VOLUME(JLOOP)
  AIR_MASS(I,J,L) = AIR_MASS(I,J,L)   + XAIRMASS

  ! Sum OH mass term into OH_MASS array
  XOHMASS         = CSPEC(JLOOP,IDOH) * XAIRMASS
  OH_MASS(I,J,L)  = OH_MASS(I,J,L)    + XOHMASS

where the arrays contain the following quantities:

  JLOOP             = 1-D array index for SMVGEAR
  I,J,L             = 3-D array indices
  AIRDENS(JLOOP)    = air density [molec/cm3]
  VOLUME(JLOOP)     = grid box volume [cm3]
  AIR_MASS(I,J,L)   = air mass [molec air]
  CSPEC(JLOOP,IDOH) = OH concentration [molec OH/cm3]  
  OH_MASS(I,J,L)    = mass-weighted OH = OH mass * air mass [molec OH/cm3 * molec air]

After the GEOS-Chem simulation finishes, the mean OH value is printed out in subroutines PRINT_MEAN_OH:

  ! Total Mass-weighted OH [molec OH/cm3] * [molec air]
  SUM_OHMASS = SUM( OH_MASS )

  ! Atmospheric air mass [molec air]
  SUM_MASS   = SUM( AIR_MASS ) 
         
  ! Divide OH [molec OH/cm3 * molec air] by [molec air] and report as [1e5 molec/cm3]
  OHCONC = ( SUM_OHMASS / SUM_MASS ) / 1d5

  ! Write value to log file
  WRITE( 6, '(/,a)' ) REPEAT( '=', 79 ) 
  WRITE( 6, *       ) 'ND23: Mass-Weighted OH Concentration'
  WRITE( 6, *       ) 'Mean OH = ', OHCONC, ' [1e5 molec/cm3]' 
  WRITE( 6, '(  a)' ) REPEAT( '=', 79 ) 
        

Typical values vary between 105 - 115 molec/cm3.

--Bob Y. 15:12, 11 February 2010 (EST)

Evolution of mean OH in GEOS-Chem

Plot of mean OH evolution

Here is a plot of the mean OH concentration from several recent GEOS–Chem 1-year benchmark simulations. The mean OH is an indicator how the chemistry mechanism is performing. Typical values are 10–12 x 105 molecules cm-1.

File:GEOS-Chem-Mean OH.png

--Bob Y. 12:41, 17 January 2014 (EST)

Mean OH in GEOS-Chem v11

The following table chronicles the evolution of the mean OH value from several different GEOS-Chem simulations. All benchmark simulations were conducted at 4 x 5 resolution unless noted otherwise.

Benchmark Met Fields & Year Mean OH
[105 molec cm-3]
Change from
prev. version
[105 molec cm-3]
Important updates in this benchmark simulation References
v11-01-public-release-Run0 GEOS-FP 2013 12.001 -0.003
(-0.025%)
Updates introduced in v11-01 public release:
v11-01k-Run0 GEOS-FP 2013 12.004 -0.065
(-.538%)
Updates introduced in v11-01h:

Updates introduced in v11-01i:

Updates introduced in v11-01j:

Updates introduced in v11-01k:

v11-01g-Run0 GEOS-FP 2013 12.069 0.025
(0.207%)
Updates introduced in v11-01g:
v11-01f-geosfp-Run0 GEOS-FP 2013 12.044 0.033
(0.275%)
Updates introduced in v11-01e:

Updates introduced in v11-01f:

v11-01d-Run1 GEOS-FP 2013 12.011 0.011
(0.0916%)
Updates introduced in v11-01c:

Updates introduced in v11-01d:

v11-01b-Run0 GEOS-FP 2013 12.000 0.277
(2.30%)
Updates introduced in v11-01a:

Updates introduced in v11-01b:

Mean OH in GEOS-Chem v10

The following table chronicles the evolution of the mean OH value from several different GEOS-Chem simulations. All benchmark simulations were conducted at 4 x 5 resolution unless noted otherwise.

Benchmark Met Fields & Year Mean OH
[105 molec cm-3]
Change from
prev. version
[105 molec cm-3]
Important updates in this benchmark simulation References
v10-01i-Run0 GEOS-FP 2013 11.125 0.033
(0.298%)
v10-01h-Run0 GEOS-FP 2013 11.092 -0.751
(-6.341%)
v10-01e-Run1 GEOS-FP 2013 11.843 -0.042
(-0.353%)
v10-01c-Run1 GEOS-FP 2013 11.885 -0.665
(-5.299%)
v10-01c-Run0 GEOS-FP 2013 12.550 -0.139
(-1.095%)

Mean OH in GEOS-Chem v9

The following table chronicles the evolution of the mean OH value from several different GEOS-Chem simulations. All benchmark simulations were conducted at 4 x 5 resolution unless noted otherwise.

Benchmark Met Fields & Year Mean OH
[105 molec cm-3]
Change from
prev. version
[105 molec cm-3]
Important updates in this benchmark simulation References
v9-02r-geosfp-Run1 GEOS-FP 2013 12.689 0.300 (2.421%) *Global simulations with GEOS-FP data product from GMAO
v9-02r-geosfp-Run0 GEOS-FP 2013 12.389 -0.537 (-4.154%)
v9-02r-geos5-Run0 GEOS-5.1.0 2005 12.926 0.356
(2.832%)
v9-02l-Run0 GEOS-5.1.0 2005 12.570 0.332
(2.713%)
v9-02j-Run0 GEOS-5.1.0 2005 12.238 -0.234
(-1.876%)
v9-02g-Run0 GEOS-5.1.0 2005 12.472 0.969
(8.424%)
v9-02f-Run0 GEOS-5.1.0 2005 11.503 0.079
(0.692%)
v9-02b-Run0 GEOS-5.1.0 2005 11.424 0.068
(0.599%)
v9-01-03r-Run1 GEOS-5.1.0 2005 11.356 -0.502
(-4.233%)
v9-01-03r-Run0 GEOS-5.1.0 2005 11.858 -0.077
(-0.645%)
v9-01-03e-Run0 GEOS-5.1.0 2005 11.935 -0.397
(-3.219%)
v9-01-02-Run1 GEOS-5.1.0 2005 12.332 +0.099
(+0.809%)
v9-01-02-Run0 GEOS-5.1.0 2005 12.233 -0.009
(-0.074%)
v9-01-01-Run1 GEOS-5.1.0 2005 12.242 +0.377
(+3.177%)
v9-01-01-Run0 GEOS-5.1.0 2005 11.865 +0.798
(+7.2%)

Mean OH in GEOS-Chem v8

The following table chronicles the evolution of the mean OH value from several different GEOS-Chem simulations. All benchmark simulations were conducted at 4 x 5 resolution unless noted otherwise.

Benchmark Met Fields & Year Mean OH
[105 molec cm-3]
Change from
prev. version
[105 molec cm-3]
Important updates in this benchmark simulation References
v8-02-04-Run2 GEOS-5.1.0 2005 11.067 +0.019
(+0.17%)
  • Linoz stratospheric ozone chemistry used instead of SYNOZ scheme
v8-02-04-Run1 GEOS-5.1.0 2005 11.048 +0.598
(+5.72%)
  • MEGAN hybrid model with MODIS-derived LAI
v8-02-04-Run0 GEOS-5.1.0 2005 10.450 -1.362
(-11.53%)
  • MEGAN hybrid model with AVHRR-derived LAI
  • EPA/NEI2005 emissions
  • Non-local PBL mixing scheme
v8-02-01-Run0 GEOS-5.1.0 2005 11.812 +0.713
(+6.42%)
  • Updated chemical mechanism: globchem.dat
  • Updated photolysis rxn rates: jv_spec.dat, ratj.d
NOTE: there was a bug in near IR photolysis of HNO4 and HCHO in the jv_spec.dat and ratj.d files. This was finally resolved in v8-02-04. We recommend all users of v8-02-01, v8-02-02, and v8-02-03 to use these updated jv_spec.dat and ratj.d files.
v8-01-04-Run2 GEOS-5.1.0 2005 11.099 +0.805
(+7.82%)
v8-01-04-Run1 GEOS-5.0.1 2005 10.294 -0.395
(-3.69%)
  • Various emissions updates with regional overwrites
  • Aaron van Donkelaar et al scale factors for 2005
  • Switched from linear to random cloud overlap in FAST-J
v8-01-04-Run0 GEOS-5.0.1 2005 10.689 -1.351
(-11.22%)
v8-01-01-Run1 GEOS-5.0.1 2005 12.040 +0.034
(+0.28%)
  • Switched aerosol thermodynamical equilibrium scheme from ISORROPIA I to RPMARES
v8-01-01-Run0 GEOS-5.0.1 2005 12.006 -0.141
(-1.16%)
  • First simulation with GEOS-5 met data

Mean OH in GEOS-Chem v7

Benchmark Met Fields & Year Mean OH
[105 molec cm-3]
Change from
previous version
[105 molec cm-3]
Important updates in this benchmark simulation References
v7-04-13-Run GEOS-4 2005 12.147 -0.669
(-5.22%)
v7-04-12-Run2 GEOS-4 2005 12.816 +1.053
(+8.95%)
  • Original non-near-land OTD/LIS local scaling
v7-04-12-Run1 GEOS-4 2005 11.763 -0.68
(-5.5%)
  • Ancient lightning scheme
v7-04-02-MEGAN GEOS-4 2001 12.44 -0.11
(-0.87%)
  • First benchmark w/ MEGAN biogenic emissions
v7-04-02-NOMEGAN GEOS-4 2001 12.55 +0.01
(+0.08%)
  • Switched fossil fuel scale year from 1995 to 1998
  • Last benchmark w/ the older GEIA biogenic emissions
v7-04-02-Base GEOS-4 2001 12.54 +0.67
(+5.6%)
  • 43 tracer simulation (no secondary organic aerosols)
  • Last 1-yr benchmark with fossil fuel scale year = 1995
v7-02-03-Run1 GEOS-4 2001 11.87 +1.39
(+13.26%)
  • Secondary organic aerosols (50 tracers)
  • GEOS-4 met fields
v7-02-03-Run0 GEOS-3 2001 10.48 ---
  • Secondary organic aerosols (50 tracers)
  • GEOS-3 met fields

--Bob Y. 12:13, 3 October 2013 (EDT)
--Melissa Sulprizio (talk) 21:23, 28 May 2015 (UTC)

Additional documentation

GEOS-Chem version 8

GEOS-Chem version 7

--Bob Y. 09:32, 23 February 2010 (EST)