GEOS-Chem v10-01

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Overview

History

The table below shows the previous, current, and successive versions of GEOS-Chem:

Previous version This version Next version
GEOS-Chem v9-02 GEOS-Chem v10-01 TBD
PUBLIC RELEASE 03 Mar 2014 TBD TBD
View v9-02 benchmark history View v10-01 benchmark history TBD

--Bob Y. 13:17, 16 January 2014 (EST)

What's new in this version

GEOS-Chem v10-01 will be released after a fixed interval of time (approxmiately 9 months after the release of the prior version, GEOS-Chem v9-02). The GEOS-Chem Steering Committee has prioritized the following updates and improvements for inclusion into GEOS-Chem v10-01. (This list is subject to change.) Updates that do not get included into GEOS-Chem v10-01 will be held over for the next version.

NOTE: v10-01a, v10-02b, etc. denote 1-month benchmark simulations, which are designed to evaluate GEOS-Chem's performance at intermediate stages of development.

v10-01a

Please see the Benchmark approval form for GEOS-Chem v10-01a for complete information about the validation of GEOS-Chem v10-01a.

Feature Type Submitted by Status
Updates to dry deposition when using the Olson 2001 land map Science Patrick Kim (Harvard) Approved 05 Feb 2014

--Bob Y. 11:08, 26 February 2015 (EST)

v10-01b

Please see the Benchmark approval form for GEOS-Chem v10-01b for complete information about the validation of GEOS-Chem v10-01b.

Feature Type Submitted by Status
Now use correct molecular weight for the PROPNN tracer in input.geos Bug fix Jenny Fisher (U. Wollongong) Approved 06 Mar 2014
Use MAP_A2A to regrid 1x1 TOMS O3 to model resolution Structural Jintai Lin (Peking U.) " "

--Bob Y. 11:08, 26 February 2015 (EST)

v10-01c

Please see the following for complete information about the validation of GEOS-Chem v10-01c:

  1. Approval for 1-month benchmark simulation GEOS-Chem v10-01c
  2. Approval form for 1-year benchmark simulation GEOS-Chem v10-01c Run0
  3. Approval form for 1-year benchmark simulation GEOS-Chem v10-01c Run1
Feature Type Submitted by Status
UCX strat chem mechanism, includes: Science UCX:

Sebastian Eastham (MIT)

Fast-JX: Sebastian Eastham (MIT), Jingqiu Mao (Princeton)

1-month benchmark:
Approved 29 May 2014

1-year benchmark:
Approved 26 Jun 2014
Bug fix for determining when to use TOMS O3 columns Bug fix GEOS-Chem Support Team " "
Add support for TAU performance profiler Structural John Linford (ParaTools, Inc.)
GEOS-Chem Support Team 		" "
Fixes for timeseries diagnostics to allow for more transported tracers Bug fix GEOS-Chem Support Team " "
Fixes for the stratospheric chemistry module Structural GEOS-Chem Support Team " "
Various updates for GEOS-Chem specialty simulations Bug fix &
Structural 		Jeff Pierce (CSU)
Kevin Wecht (Harvard)
Matthew Johnson (NASA)
GEOS-Chem Support Team 		" "
Updates to speed up GEOS-Chem execution Structural GEOS-Chem Support Team " "

--Bob Y. 11:08, 26 February 2015 (EST)

v10-01d

Please see the Benchmark approval form for GEOS-Chem v10-01d for complete information about the validation of GEOS-Chem v10-01d.

Feature Type Submitted by Status
Fix error in ISOPO2 isomerization reaction in globchem.dat Bug fix Ploy Achakulwisut (Harvard) Approved 03 Jun 2014
Modify NcdfUtil code to allow re-opening of netCDF "define mode" Structural GEOS-Chem Support Team " "
Fix parallelization error in nested grid simulations Bug fix Jintai Lin (Peking U.) " "
Fixed bug in ND44 drydep diagnostic for sea salt aerosols Bug fix Kateryna Lapina (CU Boulder) " "
Implement final recommendation for J(HAC) and J(PAN) in FAST-JX v7.0 Science Sebastian Eastham (MIT), Jingqiu Mao (Princeton) " "

--Bob Y. 11:08, 26 February 2015 (EST)

v10-01e

Please see the Benchmark approval form for GEOS-Chem v10-01e for complete information about the validation of GEOS-Chem v10-01e.

Feature Type Submitted by Status
HEMCO emissions component Structural Christoph Keller (Harvard)
GEOS-Chem Support Team
GMAO 		1-month benchmark:
Approved 07 Nov 2014

1-year benchmark:
Approved 01 Dec 2014
Removing references to modules made obsolete by GIGC and HEMCO Structural GEOS-Chem Support Team " "
Reactivating dust tracers in TOMAS simulations Bug fix Jeff Pierce (CSU)
David Ridley (MIT) 		" "
Fix for ND61 diagnostic in TOMAS simulations Bug fix Betty Croft (Dalhousie) " "

--Bob Y. 11:08, 26 February 2015 (EST)

v10-01f

Please see the Benchmark approval form for GEOS-Chem v10-01f for complete information about the validation of GEOS-Chem v10-01f.

Feature Type Submitted by Status
Two-way coupling between global and nested GEOS-Chem models Science Jintai Lin (Peking U.)
Yingying Yan (Peking U.) 		Approved 13 Jan 2015
Update ALD2 photolysis in FAST-JX v7.0 Science Jingqiu Mao (Princeton), Sebastian Eastham (MIT) " "
Read 2D data for individual NOx species in ucx_mod.F Bug fix Sebastian Eastham (MIT) " "
Bug fixes and updates for tagged CO simulation Bug fix Jenny Fisher (U. Wollongong) " "
Bug fixes for scavenging by co-condensation Bug fix Duncan Fairlie (NASA LaRC) " "
Correct bugs in stratospheric Bry data Bug fix Johan Schmidt (Harvard) " "
Introduction of flexible precision into GEOS-Chem Structural GEOS-Chem Support Team " "
Updates for 0.25° x 0.3125° China nested grid with GEOS-FP meteorology Structural Yuxuan Wang (Tsinghua/Galveston) " "
Additional minor updates to HEMCO Structural Christoph Keller (Harvard) " "

--Bob Y. 11:08, 26 February 2015 (EST)

v10-01g

Feature Type Submitted by Status
Add fix to prevent a segmentation fault in HEMCO when emissions are turned off Bug fix Christoph Keller (Harvard)
  • As these are all bug fixes, we did not run a benchmark for v10-01g.
  • These will be validated with the v10-01h benchmarks, along with the HEMCO emissions updates.
Bug fix in planeflight diagnostic when using short chemistry timesteps Bug fix Luke Schiferl (MIT) " "
Fix calculation of WETLOSS for non-aerosol tracers in DO_MERRA_CONVECTION and DO_WASHOUT_ONLY Bug fix Carey Friedman (MIT) " "
Make the netCDF library linking process more portable Structural Bob Yantosca (Harvard) " "

--Bob Y. 11:08, 26 February 2015 (EST)

v10-01h

Please see the Benchmark approval form for GEOS-Chem v10-01h for complete information about the validation of GEOS-Chem v10-01h.

Feature Type Submitted by Status
FINN biomass burning emissions (optional inventory implemented via HEMCO) Science Jenny Fisher (U. Wollongong)
Jingqiu Mao (Princeton)
Christine Wiedinmyer (NCAR) 		TBD
GFED4 biomass burning emissions (implemented via HEMCO) Science Prasad Kasibhatla (Duke)
Christoph Keller (Harvard) 		" "
Add Guenther et al (2012) updates to MEGAN2.1 biogenic emissions (implemented via HEMCO) Science Dylan Millet (U. Minnesota) " "
Updates to ship NOx chemistry, includes: Science & Bug fix Chris Holmes (UC Irvine)
Geert Vinken (Eindhoven) 		" "
MASAGE NH3 agricultural emissions (optional inventory implemented via HEMCO) Science Fabien Paulot (Harvard) " "
Replace EDGARv3 with EDGAR v4.2 anthropogenic emissions (implemented via HEMCO) Science Qiang Zhang (Tsinghua)
Meng Li (Tsinghua)
Sajeev Philip (Dalhousie) 		" "
HTAP emissions (optional inventory implemented via HEMCO) Science Qiang Zhang (Tsinghua) " "
MIX Asian emissions (implemented via HEMCO) Science Qiang Zhang (Tsinghua)
Meng Li (Tsinghua) 		" "
NEI 2011 emissions with hourly resolution (implemented via HEMCO) Science Katie Travis (Harvard) " "
Update EMEP emissions for 2008-2010 (implemented via HEMCO) Science Aaron van Donkelaar (Dalhousie) " "
Update OTD/LIS factors for GEOS-FP through October 2014 (implemented via HEMCO) Science Lee Murray (Columbia) " "
Re-implement RCP future emission scenarios via HEMCO Structural Christoph Keller (Harvard) " "
Split AEROCOM volcanic emissions back into eruptive and degassing (implemented via HEMCO) Structural Christoph Keller (Harvard) " "
Additional updates to HEMCO Structural Christoph Keller (Harvard) " "
Fix for optimization error discovered in v10-01h Bug fix GEOS-Chem Support Team " "

--Bob Y. 12:31, 27 March 2015 (EDT)

v10-01i

Please see the Benchmark approval form for GEOS-Chem v10-01i for complete information about the validation of GEOS-Chem v10-01i.

Feature Type Submitted by Status
Online Radiative Transfer in GEOS-Chem Science David Ridley (MIT),
Colette Heald (MIT) 		TBD
Reprocessed EMEP emissions for 1990-2012 Science Aaron van Donkelaar (Dalhousie) " "
Bug fixes for the PARANOX HEMCO extension Bug fix Christoph Keller (Harvard) " "
Improve temporal resolution of anthropogenic CO2 sources Science Ray Nassar (Environment Canada) TBD, but before IGC7
Replace CASA CO2 biosphere climatology with year-specific fluxes Science Ray Nassar (Environment Canada)
Dylan Jones (U. Toronto) 		TBD, but before IGC7
NEI 2008 Hg emission inventory (implemented via HEMCO) Science Yanxu Zhang (Harvard) TBD
UNEP 2010 anthropogenic Hg emissions (implemented via HEMCO) Science Shaojie Song (MIT) TBD
NEI 2008 emissions with hourly resolution (implemented via HEMCO) Science Katie Travis (Harvard) TBD

--Bob Y. 11:08, 26 February 2015 (EST)

In the pipeline

The following features will more than likely be placed into the next version of GEOS-Chem:

Feature Type Submitted by Status
Historical anthropogenic atmospheric emissions of Hg Science Bess Corbitt (Harvard) TBD
PAN / Organics Science Emily Fischer (CSU) TBD
CO2 direct effect on isoprene emissions Science Amos Tai (The Chinese University of Hong Kong) TBD
Arctic Hg cycling Science Jenny Fisher (U. Wollongong) TBD
Criegee intermediate Science Dylan Millet (U. Minnesota) TBD
Impaction scavenging for hydrophobic BC Science Qiaoqiao Wang (formerly Harvard, now Max-Planck Institute) TBD
Homogeneous IN removal Science Qiaoqiao Wang (formerly Harvard, now Max-Planck Institute) TBD
Acid uptake on dust aerosols Science T. Duncan Fairlie (NASA/LARC) TBD
Subsurface ocean Hg concentration update Science Anne Soerensen (Harvard) TBD
RRTMG radiative transfer code in APM aerosol microphysics Science Fangqun Yu (SUNY Albany) TBD
Interannual lightning Science Lee Murray (Harvard) TBD
Updates to PAH code Science Carey Friedman (MIT)
Helen Amos (Harvard) 		TBD
Improved dust size distribution scheme Science Li Zhang (Colorado U.)
Daven Henze (Colorado U.) 		TBD

--Bob Y. 11:08, 26 February 2015 (EST)

New data directories

The following new data directories have been added for GEOS-Chem v10-01. You will have to download the directories relevant to your simulation.

Files for the UCX chemistry mechanism

The UCX chemistry mechanism requires data located in this directory: 

$ROOTDIR/GEOS_NATIVE/UCX_201403                    # Input files for the UCX mechanism

where $ROOTDIR is the top-level data directory on your system. (If you don't know where that is, ask your sysadmin.)

You can download these directories with anonymous FTP or the Wget utility. For instructions, please see Chapter 2.4, Downloading the GEOS-Chem shared data directories in the GEOS-Chem Online User's Guide.

Emissions files for use with HEMCO

In GEOS-Chem v10-01 and newer versions, emissions are computed by the HEMCO emissions component and are passed to GEOS-Chem. We have created new data files (in COARDS-compliant netCDF format) for use with HEMCO. These new data files are contained in the HEMCO data directory tree. For detailed instructions on how to download these data files to your disk server, please see our Downloading the HEMCO data directories wiki post.

We recommend placing the HEMCO data in the directory path 

$ROOTDIR/ExtData/HEMCO

where $ROOTDIR is the top-level data directory on your system. (If you don't know where that is, ask your sysadmin.)

--Bob Y. 11:40, 26 February 2015 (EST)

Previous issues now resolved in GEOS-Chem v10-01

The following bugs and/or technical issues have now been resolved in GEOS-Chem v10-01.

Now use correct value of molecular weight for the PROPNN tracer in input.geos

This update was validated in the 1-month benchmark simulation v10-01b and approved on 06 Mar 2014.

This unresolved issue from GEOS-Chem v9-02 has now been corrected.

--Bob Y. 15:45, 12 March 2014 (EDT)

Now use MAP_A2A to regrid 1x1 TOMS O3 to model resolution

This update was validated in the 1-month benchmark simulation v10-01b and approved on 06 Mar 2014.

For complete information about this issue, please see this post on our FAST-J photolysis mechanism wiki page.

--Bob Y. 15:47, 12 March 2014 (EDT)

Bug fix for determining when to use TOMS O3 columns

This update was validated in the 1-month benchmark simulation v10-01c and approved on 29 May 2014.

For complete information about this issue, please see this post on our FAST-J photolysis mechanism wiki page.

--Bob Y. 16:58, 30 May 2014 (EDT)

Fixes for the stratospheric chemistry module

These updates were validated in the 1-month benchmark simulation v10-01c and approved on 29 May 2014.

We have introduced the following fixes to the stratospheric chemistry module. Please see the following posts for more information:

  1. Reduce memory footprint of the stratospheric chemistry module
  2. Bug fix in routine GET_RATES_INTERP. affecting nested-grid simulations

--Bob Y. 16:58, 30 May 2014 (EDT)

Various updates for GEOS-Chem specialty simulations

These updates were validated in the 1-month benchmark simulation v10-01c and approved on 29 May 2014.

We have added several updates (both structural updates and minor bug fixes) to the GEOS-Chem specialty simulations. Please view the following posts for more information:

Simulation Status Updates
C2H6 simulation Needs attention
  • The C2H6 simulation is initialized with a call from routine GIGC_Init_Extra in module GeosCore/input_mod.F.
CH4 simulation Up-to-date
HCN/CH3CN simulation Needs attention
  • The HCN/CH3CN simulation is initialized with a call from routine GIGC_Init_Extra in module GeosCore/input_mod.F.
Tagged CO simulation Up-to-date
Hg + Global Terrestrial Mercury Model Up-to-date
POPs simulation Up-to-date
Tagged O3 simulation Up-to-date
TOMAS aerosol microphysics Up-to-date

NOTE: Initializing the various specialty simulations from routine GIGC_Init_Extra is necessaary for compatibility with our Grid-Independent GEOS-Chem (aka GIGC) development. We need to initialize all GEOS-Chem simulations at the start of the simulation, and not on the first chemistry or emissiosn timestep after the simulation has already started. This is a requirement of the Earth System Model Framework (ESMF) software upon which our GIGC code relies.

--Bob Y. 16:58, 30 May 2014 (EDT)

Updates to speed up GEOS-Chem execution

These updates were validated in the 1-month benchmark simulation v10-01c and approved on 29 May 2014.

We used the GEOS-Chem Unit Tester and the Tuning and Analysis Utilities (TAU) to locate and fix the following inefficiencies in GEOS-Chem:

Location Problem Solution
Olson land map module Performance bottleneck Speed up computations in subroutine COMPUTE_OLSON_LANDMAP
GEOS-4 convection module Array temporary Removed array temporaries in the call to the GEOS-4 convection routine
GCAP convection module Array temporary Removed array temporaries in the call to the GCAP convection routine
Ocean mercury module Array temporary Removed array temporaries in subroutine READ_HG2_PARTITIONING
GEOS-5 / GEOS-FP / MERRA advection module Passing a pointer to an explicit-shape array (inefficiency) Reduce time spent in advection driver routine TPCORE_FVDAS
GEOS-FP / MERRA convection module Inefficient load balancing Reduce time spent in routine DO_CONVECTION when using GEOS-FP or MERRA

--Bob Y. 16:59, 30 May 2014 (EDT)

Bug fixes and and updates for v10-01d

These updates were validated in the 1-month benchmark simulation v10-01d and approved on 03 Jun 2014.

GEOS-Chem v10-01d contains fixes for the following minor issues:

Location Problem Solution
globchem.dat input file Typo in RIO2 reaction Remove duplicate GLYX product from RIO2 reaction
NcdfUtil/m_netcdf_io_define.F90 Need to re-open netCDF define mode to facilitate HEMCO I/O Added routine NcBegin_Def to open or re-open the netCDF define mode. Turning on define mode lets you to define a netCDF variable and all its attributes. But before you can write the actual data to the netCDF file, you first have to switch to data mode. Being able to switch between define mode and data mode frees you from the restriction of having to define all netCDF variables and attributes in a single step.
GeosCore/tpcore_geos5_window_mod.F90
GeosCore/tpcore_geosfp_window_mod.F90 		Parallelization bug in nested grid simulations Fix parallelization error in nested grid simulations
GeosCore/seasalt_mod.F The ND44 dry dep diagnostic was not being archived properly when the non-local PBL mixing option was turned off (i.e. when using TURBDAY full PBL mixing). Fixed bug in ND44 drydep diagnostic for sea salt aerosols
Full-chemistry input files:
  • globchem.dat
  • FJX_spec.dat
 Implement the final recommendation for J(HAC) and J(PAN). We were not able to include this in the 1-month benchmarks for v10-01c. But these were included in the 1-year benchmarks for v10-01c. Final recommendation for J(HAC) and J(PAN)

--Bob Y. 17:20, 3 June 2014 (EDT)

Reactivating dust tracers in TOMAS simulations

These updates were validated with the 1-month benchmark simulation v10-01e and approved on Approved 07 Nov 2014.

The TOMAS team has submitted a fix that allows you to use the online dust tracers in TOMAS simulations. Due to a bug in input_mod.F, this capability had been omitted. For more information, please see this post on our TOMAS aerosol microphysics wiki page.

--Bob Y. 16:15, 13 June 2014 (EDT)

Fix for ND61 diagnostic in TOMAS simulations

These updates were validated with the 1-month benchmark simulation v10-01e and approved on Approved 07 Nov 2014.

Betty Croft submitted a fix for the ND61 diagnostic (TOMAS nucleation rates). For more information, please see this post on our TOMAS aerosol microphysics wiki page.

--Melissa Sulprizio 10:28, 17 September 2014 (EDT)

Bug fixes and and updates for v10-01f

These updates were validated with the 1-month benchmark simulation v10-01f and approved on Approved 13 Jan 2015.

GEOS-Chem v10-01f contains fixes for the following minor issues:

Location Problem Solution
Input file FJX_spec.dat Jingqiu Mao (Princeton) and Chris Chan Miller (Harvard) had discovered that the acetaldehyde photolysis rate in FAST-JX v7.0 was incorrect. This has now been corrected in GEOS-Chem v10-01f. For a complete description of the issue, please see this post on our FAST-JX v7.0 photolysis mechanism wiki page.
GeosCore/tagged_co_mod.F Several minor issues were corrected in the Tagged CO simulation. For more information, please see this post on our Tagged CO simulation wiki page.
GeosCore/ucx_mod.F Added 2-D boundary conditions for each of the individual NOx family species. For more information, please see this post on our UCX chemistry mechanism wiki page.
GeosCore/wetscav_mod>F Corrected incorrect values of constants used for the scavenging of H2O2 and NH3 by co-condensation. For more information, please see this post on our Wet deposition wiki page.
GeosCore/strat_chem_mod.F90
and HEMCO routines 		Now use updated files for stratospheric Bry concentrations. Data are now placed on the 2° x 2.5° grid and regridded to other resolutions via the HEMCO emissions component. For more information, please see this post on our Bromine chemistry mechanism wiki page.
Various Corrected technical issues in the 0.25° x 0.3125° CH nested grid simulation. For more information, please see this post on our Nested Model Working Group wiki page.
Various Added new functionality into HEMCO. For more information, please see this post on our Implementation of HEMCO in GEOS-Chem wiki page.

--Bob Y. 18:10, 13 January 2015 (EST)

Bug fixes and and updates for v10-01g

GEOS-Chem v10-01g contains fixes for the following minor issues:

Location Problem Solution
GeosCore/hcoi_gc_main_mod.F90
and various other modules 		Turning off emissions in the input.geos file made some HEMCO pointers undefined. When other parts of GEOS-Chem tried to access these pointers, a segmentation fault would occur, which would halt GEOS-Chem execution. For a complete description of the solution, please see this post on our Implementation of HEMCO in GEOS_Chem wiki page.
GeosCore/planeflight_mod.F When running a nested simulation with short timesteps, the TAU values (hours since 01 Jan 1985) that are used to define the beginning and end of a chemistry timestep lack the necessary precision. This can cause desired flight points on the edge of chemistry timesteps to not be written out to the planeflight log file. Now use the year, month, day, hour, and minute values obtained from time_mod.F to gain extra precision when computing this particular TAU value.
GeosCore/convection_mod.F
GeosCore/wetscav_mod.F 		There is a bug in the calculation of WETLOSS in DO_MERRA_CONVECTION and DO_WASHOUT_ONLY that causes mass of scavenged tracer passed to depo_mercury_mod.F to differ from the mass that is archived in the wet deposition diagnostics (ND38 and ND39). For a complete description of the solution, please see this post on our Wet deposition wiki page.
Makefile_header.mk Some users who have built the netCDF and/or HDF5 libraries with the GEOS-Chem-Libraries installer have reported that GEOS-Chem compiliation dies because the netCDF and/or HDF5 libraries could not be found. This almost always happens if the libraries were built in one directory but later moved to a different directory. For a complete description of this solution, please this post on our Installing libraries for GEOS-Chem wiki page.

--Bob Y. 16:40, 13 January 2015 (EST)

Bug fixes and updates for v10-01h

GEOS-Chem v10-01h contains fixes for the following minor issues:

Location Problem Solution
GeosUtil/grid_mod.F90 An apparent optimization error was overwriting the YSIN array to -1's and 0's, which should not have happened. The HEMCO emissions component relied on the YSIN array to regrid emission fields. As a result of this error, simulations were dying with a segmentation fault. For a complete description of the solution, please see this post on our Regridding in GEOS-Chem wiki page.

--Bob Y. 17:12, 1 April 2015 (EDT)

Bug fixes and updates for v10-01i

GEOS-Chem v10-01i contains fixes for the following minor issues:

Location Problem Solution
GeosCore/drydep_mod.F
GeosCore/tracerid_mod.F 		The dry deposition module still referred to obsolete drydep species ISN2. This has now been replaced by ISN1. For a complete description of the solution, please see this post on our Dry deposition wiki page.
GeosCore/main.F Karen Yu noted that the plane flight diagnostic was being written out right after emissions, rather than after chemistry, which was biasing the results, particularly for things like NOx and isoprene. The PLANEFLIGHT routine (in GeosCore/planeflight_mod.F is now called after chemistry.
GeosUtil/regrid_a2a_mod.F90 Regional emissions data files (e.g. EMEP, MIX, NEI2011) as read in by HEMCO were being regridded incorrectly. Negatives were appearing in the arrays for these emissions within the HEMCO data structure. For a complete description of the solution, please see this post on our Regridding in GEOS-Chem wiki page.
Headers/gigc_input_mod.F90
GeosCore/chemistry_mod.F
GeosCore/convection_mod.F
GeosCore/diag_mod.F
GeosCore/pjc_pfix_geosfp_window_mod.F
GeosCore/tpcore_geosfp_window_mod.F90
GeosCore/transport_mod.F
GeosCore/wetscav_mod.F
GeosUtil/bpch2_mod.F
GeosUtil/grid_mod.F90
HEMCO/Extensions/hcox_lightnox_mod.F90 		The following issues were observed in the 0.25° x 0.3125° nested-grid simulations:
  • Incorrect latitude edge values were being used
  • Simulations were taking a very long time to run
 Lin Zhang (PKU) submitted these fixes for the 0.25° x 0.3125° nested-grid simulations.
  • Now use correct latitude edges.
  • Do not average values over the poles for the nested simulations.
  • Do not run transport over the buffering zone.
  • Implement an option to run the nested simulation over smaller domain to save on time (by changing the buffering zone).
  • Correct a typo in HEMCO/Extensions/hcox_lightnox_mod.F90.

--Bob Y. 11:24, 16 April 2015 (EDT)

Outstanding issues not yet resolved in GEOS-Chem v10-01

The following issues have not yet been resolved in GEOS-Chem v10-01. Some of these issues represent questions of open research rather than bugs in the source code.

Incorrect photolysis rates in FAST-JX v7.0

Jingqiu Mao (Princeton) and Chris Chan Miller (Harvard) discovered that some FAST-JX v7.0 photolysis rates are incorrect:

  1. Incorrect carbonyl nitrate photolysis rate

This is currently an open area of research in GEOS-Chem.

--Bob Y. 14:09, 13 January 2015 (EST)

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