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• File I/O with GAMAP
  On this page we list some tips & tricks for reading and writing files with GAMAP. Please also see the following pages: #* Output files from the NASA GMI model
  41 KB (6,157 words) - 14:19, 19 July 2023
• GEOS-Chem v10-01
  #*These now include new [[HEMCO data directories|netCDF data files for use with the new HEMCO emissions component]] ...released GFED4 data files|Switching to the officially released GFED4 data files]]
  99 KB (15,209 words) - 20:26, 20 September 2022
• GEOS-Chem v10-01 benchmark history
  ...ormat to save disk space. To download the TARBALL containing all relevant files, type: ...ormat to save disk space. To download the TARBALL containing all relevant files, type:
  154 KB (24,591 words) - 21:08, 20 September 2022
• GEOS-Chem 12
  *This bug does not affect any data files used by the benchmark simulation. ...lingering issue that caused the GEOS-Chem dry-run not to recognize missing files]
  133 KB (18,781 words) - 21:13, 21 June 2021
• Issues now resolved in GEOS-Chem 12
  === Further bug fix to prevent incorrect restart file output when spanning leap year days === ...This fix prevents restart files (or other instantaneous netCDF diagnostic files) from being created with data fields that are all zeroes.
  70 KB (10,330 words) - 21:56, 20 December 2019
• GEOS-Chem v11-02
  ...les_at_southern_mid-latitudes|Grid offset bug fix in high-resolution MEGAN files at southern mid-latitudes]] ..._emissions#Global_0.25x0.25_MEGAN_input_and_MODIS_LAI|Use global 0.25x0.25 files for MEGAN input and MODIS LAI]]
  88 KB (13,616 words) - 21:07, 20 September 2022
• GEOS-Chem v11-02 benchmark history
  ..._emissions#Global_0.25x0.25_MEGAN_input_and_MODIS_LAI|Use global 0.25x0.25 files for MEGAN input and MODIS LAI]] *[[Lightning_NOx_emissions|Update lightning BETA values and OTD/LIS files for consistency with latest met fields]]
  158 KB (24,655 words) - 18:49, 28 May 2020
• The NcdfUtilities package
  ...ortran modules that you can use to write data to and read data from netCDF files. This package is contained within GEOS-Chem (in the <tt>NcdfUtil/</tt> fol ...Utilities contains the Fortran source code files listed below. These same files are used both in GEOS-Chem, and as a standalone distribution.
  20 KB (3,149 words) - 20:10, 22 May 2017
• GEOS-Chem v9-02 benchmark history
  ...ormat to save disk space. To download the TARBALL containing all relevant files, type: ...ormat to save disk space. To download the TARBALL containing all relevant files, type:
  106 KB (16,718 words) - 19:15, 19 June 2017
• GEOS-Chem v11-01 benchmark history
  You may also view the PDF files online by pointing your browser to You may also view the PDF files online by pointing your browser to
  166 KB (26,088 words) - 18:43, 28 May 2020
• GEOS-Chem 13.0.0
  *Use restart file that has been spun up (July 2016 restart file from GEOS-Chem 12.9.0 1-year benchmark) |[https://github.com/geoschem/geos-chem/issues/314 Use same input files for GEOS-Chem Classic and GCHP]
  448 KB (58,579 words) - 18:10, 3 January 2023
• GCHP v11-02
  ...option requires use of source code from two repositories and run directory files from one repository maintained under version control. This page documents t |Update initial restart file to reflect 2D initial mixing ratios applied at GCC runtime
  41 KB (6,396 words) - 18:56, 10 May 2019
• GEOS-Chem v11-01
  |[[PGI Fortran compiler#File Linking Error|Bug fix for linking files when compiling with PGI]] |[[CO2_simulation#Additional_Update_and_Bug_Fix|Update CO2 files for HEMCO]]
  95 KB (13,968 words) - 21:57, 20 December 2019
• Creating run directories for GEOS-Chem 12.9.3 and prior
  ...ries for GEOS-Chem 13.0.0 and later|Previous]] | [[GEOS-Chem configuration files|Next]] | [[Getting Started with GEOS-Chem]]''''' #[[GEOS-Chem configuration files|Configuring runs]]
  16 KB (2,212 words) - 21:31, 8 December 2020
• Setting up GEOS-Chem nested grid simulations
  COLLECTIONS: 'Restart', ...subset option will greatly reduce the file size of your boundary condition files.
  32 KB (4,575 words) - 19:09, 17 August 2021
• Bugs and fixes in GEOS-Chem 12.0.0 to 12.5.0
  |Diagnostics / Restart files |Diagnostics / Restart files
  41 KB (6,194 words) - 14:22, 22 March 2021
• Regridding with GAMAP
  == Regridding restart files == ...tart files have been migrated from binary punch format to [[Preparing data files for use with HEMCO#The COARDS netCDF standard|COARDS-compliant netCDF forma
  7 KB (1,068 words) - 14:20, 19 July 2023
• GEOS-Chem 12 benchmark history
  ...SHIP_SO2_scale_factors|Bug fix for ARCTAS_SHIP in <tt>HEMCO_Config.rc</tt> files]] ..._emissions#Global_0.25x0.25_MEGAN_input_and_MODIS_LAI|Use global 0.25x0.25 files for MEGAN input and MODIS LAI]]
  47 KB (6,910 words) - 19:14, 14 December 2022
• GEOS-Chem Newsletter Summer-Fall 2013
  *Fix bug in CAC NH3 emission files (Wai Ho Lo) ...still carry the "GEOS-5.7.2" designation. I recommend that we rename the files so that they carry the GEOS-FP designation before the official release of v
  18 KB (2,894 words) - 16:50, 8 December 2016
• General GAMAP usage
  ...</tt> will make IDL search the directory and all of its subdirectories for files of the appropriate type (<tt>*.pro</tt>, <tt>*.sav</tt>) for the given path ...th names for those directories containing <tt>*.pro</tt> or <tt>*.sav</tt> files.)
  19 KB (3,012 words) - 14:19, 19 July 2023
• UCX chemistry mechanism
  * The tracer restart file must use the native vertical resolution (72 layers in [[MERRA]], [[GEO ...mes and slow circulation. Any of these flags being set to T results in the restart file being ignored for those species, either within the stratosphere or ove
  34 KB (5,019 words) - 15:57, 17 May 2018
• TOMAS setup guide
  === Restart Files === There are restart files for TOMAS at 4x5 resolution at
  14 KB (2,171 words) - 15:18, 19 June 2019
• GEOS-Chem v9-01-03 benchmark history
  ...ormat to save disk space. To download the TARBALL containing all relevant files, type: ...ormat to save disk space. To download the TARBALL containing all relevant files, type:
  82 KB (12,907 words) - 20:59, 20 June 2017
• GEOS-Chem 14.0.2
  |Update sample full-chemistry restart files to 10-year 14.0.0 benchmark output ....com/geoschem/geos-chem/issues/1484 Update HEMCO_Config.rc to read EDGARv6 files with corrected timestamps]
  69 KB (8,991 words) - 18:34, 24 January 2023
• Bugs and fixes in GEOS-Chem v9, v10, and v11
  ...es_at_Harvard_and_Dalhousie_for_July_2013|(v11-02e) Sync GEOS-FP met field files on Harvard FTP with those at Dalhousie]] ...netCDF-4_output_files|(v11-02a) Enable data compression in netCDF-4 output files]]
  33 KB (5,225 words) - 20:46, 2 January 2019
• GEOS-Chem v8-01-04
  At present, all of the GEOS-5.0.1 met data files for GEOS-Chem are being replaced with the newer GEOS-5.1.0 data product. G ...ormat to save disk space. To download the TARBALL containing all relevant files, type:
  23 KB (3,442 words) - 17:39, 15 November 2017
• GEOS-Chem 14.0.0
  ...oschem/geos-chem/issues/1244 Remove unnecessary met-fields from GC-Classic restart file that caused incorrect initial meteorology] |Input files
  435 KB (56,725 words) - 20:48, 14 May 2024
• GEOS-Chem benchmarking
  Output files and evaluation plots for 1-month and 1-year benchmark simulations are archi *Restart files
  6 KB (921 words) - 14:35, 18 October 2023
• GEOS-Chem versions
  * Now specify GCClassic restart file paths in a single location (used by rundir creation and dry-run data d * Update sample restart files for fullchem and TransportTracer simulations to output from the 14.2.0 1-ye
  46 KB (5,503 words) - 16:29, 2 April 2024
• GEOS-Chem v9-01-02 benchmark history
  '''''NOTE: to save disk space, we have created TARBALL (<tt>*.tar.gz</tt>) files for the 1-month benchmark plots. You can download each TARBALL file and ex ...ormat to save disk space. To download the TARBALL containing all relevant files, type:
  68 KB (10,687 words) - 22:14, 19 June 2017
• GEOS-Chem v8-01-01
  ...ormat to save disk space. To download the TARBALL containing all relevant files, type: ...ormat to save disk space. To download the TARBALL containing all relevant files, type:
  13 KB (1,925 words) - 18:05, 20 June 2017
• GEOS-Chem 13.4.0
  ...-chem/pull/945 Add option for driving GCHP with native GEOS meteorological files] |Add capability to read native meteorological data files
  178 KB (22,566 words) - 17:24, 26 October 2022
• GEOS-Chem 14.3.0
  |Now read the Hg restart file from GEOSCHEM_RESTARTS/v2023-12 *Files will need to be re-downloaded
  300 KB (39,414 words) - 20:48, 14 May 2024
• Color and graphics with GAMAP
  === Creating PDF files === ...7.x) cannot save directly to Adobe PDF format. The best way to create PDF files from IDL is to first create a PostScript file, and then use the utility <tt
  10 KB (1,773 words) - 14:20, 19 July 2023
• GEOS-Chem v8-02-04
  ...ormat to save disk space. To download the TARBALL containing all relevant files, type: ...ormat to save disk space. To download the TARBALL containing all relevant files, type:
  33 KB (4,899 words) - 17:46, 15 November 2017
• FlexGrid
  *Add entries to read netCDF meteorology files in <tt>HEMCO_Config.rc</tt> ...explicitly control each meteorological variable in run-time configuration files to perform meteorology sensitivity tests (an interface resembling [[GCHP]])
  21 KB (2,963 words) - 05:45, 8 October 2023
• GEOS-Chem 14.1.0
  |Improve MAPL error handling of corrupted input files |Updated CH4 files<br>(Fixes netCDF file issues)
  83 KB (10,993 words) - 20:48, 14 May 2024
• Benchmark/GEOS-Chem 12.4.0
  ...nitions are simple to adjust. Updating them requires only editing the json files. *[[GEOS-Chem restart files#Restart files in GEOS-Chem 12|GEOS-Chem restart file updates]]
  96 KB (13,416 words) - 13:11, 10 October 2019
• Benchmark/GEOS-Chem 12.6.0
  Enable PDF bookmarks¹ in the files linked below to navigate between species. See the [[Species in GEOS-Chem]] ...nitions are simple to adjust. Updating them requires only editing the json files.
  108 KB (15,559 words) - 16:40, 15 October 2019
• Frequently asked questions about GEOS-Chem
  == Where can I get restart files for GEOS-Chem? == ...ocs.io/en/latest/gcc-guide/04-data/restart-files-gc.html#where-can-i-get-a-restart-file-for-my-simulation please visit this link].
  5 KB (725 words) - 18:06, 20 September 2022
• GEOS-Chem 14.2.0
  |[https://github.com/geoschem/geos-chem/issues/1665 Store HEMCO restart files in the run directory <tt>Restarts/</tt> subdirectory] ...ons and integration/parallel tests if there are missing species in restart files and/or boundary conditions
  346 KB (45,124 words) - 20:47, 14 May 2024
• GEOS-Chem Newsletter January 2009
  ...ho would like to download actual output files (i.e. bpch files, timeseries files, etc) from the NRT simulation, you may access those at: ...e directory structure. In order to preserve disk space, we have to remove files older than a certain date (e.g. older than 60 days).
  5 KB (864 words) - 15:14, 11 February 2010
• GEOS-Chem v9-01-01
  #[[GEOS-Chem v8-03-02#Fix for KPP solver files|Updated KPP solver files (to account for the isoprene nitrate changes in globchem.dat)]] ...-Chem v8-03-02#ND49 file close error|The error that caused ND49 diagnostic files to not be closed at the proper time.]]
  36 KB (5,768 words) - 15:06, 19 June 2019
• GEOS-Chem 13.1.0
  |Config files |Restart files for GCAP2
  75 KB (9,610 words) - 22:49, 10 September 2021
• GEOS-Chem 13.3.0
  |[[GEOS-Chem_restart_files|GEOS-Chem Restart Files]] |Updated full-chemistry and TOMAS restart files with new species for 13.3.0 added.
  150 KB (19,810 words) - 18:18, 19 February 2022
• GEOS-Chem nested grid simulations
  Starting in [[GEOS-Chem v10-01]] you do not need to use separate emissions files with resolutions matching those of the your nested grid. The [[HEMCO|HEMCO ...oundary conditions) to initialize your nested grid simulation. The restart files are also read in and regridded/cropped by HEMCO. As always, we recommend [[
  11 KB (1,499 words) - 19:04, 13 July 2020
• GEOS-Chem 13.2.0
  *Daily data files are very large; we have compressed some. |Set lev positive 'up' for all diagnostic files except Emissions
  605 KB (76,005 words) - 18:49, 3 January 2023
• GNU Fortran compiler
  ...ta. This only affects file I/O to/from binary files (such as binary punch files) but not ASCII, netCDF, or other file formats. ...is option is not used globally, but is only applied to certain indidvidual files (mostly from third-party codes like ISORROPIA.''
  52 KB (7,498 words) - 17:56, 24 October 2023
• CMake FAQ
  If you want to restart the build from scratch, you can do ==== How do I clean my build's configuration (i.e. CMake's files)? ====
  7 KB (961 words) - 23:34, 9 November 2020
• GEOS-Chem v9-01-02
  ..._issue_with_reading_restart.cspec_file|Fix for mis-indexing issue in CSPEC restart file]] ...ndent GEOS-Chem#Elimination of COMMON_blocks|Eliminate common block header files + Other source-code updates for ESMF compatibility]]
  43 KB (6,754 words) - 15:22, 19 June 2019
• GEOS-Chem 14.2.2
  |[https://github.com/geoschem/geos-chem/pull/1989 Update sample restart files for fullchem and TransportTracer simulations to output from the 14.2.0 1-ye |Restart files<br>(version 14.2.0)
  2 KB (218 words) - 20:49, 14 May 2024
• Benchmark/GEOS-Chem 12.8.0
  Enable PDF bookmarks¹ in the files linked below to navigate between species. See the [[Species in GEOS-Chem]] ...nitions are simple to adjust. Updating them requires only editing the YAML files.
  148 KB (20,511 words) - 17:29, 25 June 2020
• Benchmark/GEOS-Chem 12.9.0
  Enable PDF bookmarks¹ in the files linked below to navigate between species. See the [[Species in GEOS-Chem]] ...nitions are simple to adjust. Updating them requires only editing the YAML files.
  114 KB (16,240 words) - 11:56, 15 July 2020
• GEOS-Chem 13.0.1
  |[https://github.com/geoschem/geos-chem/issues/667 Force GEOS-Chem Classic restart file to match simulation date] |GEOS-Chem restart files
  2 KB (280 words) - 19:40, 23 June 2021
• GEOS-Chem 14.4.0
  |Remove hardcoded year range for met fields, restart, and BC files in HEMCO_Config.rc |Bug fix for stretched grid restart attribute check
  342 KB (45,445 words) - 21:14, 13 May 2024
• Sandbox
  #<p>Add tracer(s) to restart file – see separate instructions</p> Modify run directory files
  4 KB (595 words) - 21:25, 10 May 2023
• Tagged CO simulation
  ...ed to make the appropriate changes in your <tt>input.geos</tt> and restart files. ...It may be best to use the binary masking but use as fine resolution mask files e.g. 0.5 x 0.5) as possible.</p>
  13 KB (1,970 words) - 17:33, 24 October 2023
• GEOS-Chem 14.2.3
  ...oschem/geos-chem/pull/2050 Update GEOS-Chem Classic rundir scripts to read restart file paths from download_data.yml] |Add utility scripts to change version numbers in source code files when releasing a new version
  5 KB (658 words) - 14:01, 9 February 2024
• GEOS-Chem Newsletter December 2009
  As of 12/17/09, Due to some technical issues we have had to restart Run0. At this point we anticipate being finished with the benchmarking pro then the GNU Make utility will compile 4 files at a time. When one file finishes compiling, the next available processor
  14 KB (2,309 words) - 15:14, 19 June 2019
• GEOS-Chem Newsletter October 2010
  ...ulations (other than coding or machine issues), or are looking for restart files or other data, we invite you to submit your questions to the relevant Worki
  13 KB (2,052 words) - 20:24, 28 May 2014
• GEOS-Chem v11-01 HP Validation
  ...hem High Performance, and a single simulation day is run with an identical restart file. This includes disabling all emissions, unless the emissions component ...regridded from the GEOS-Chem 4x5 lat/lon and GCHP c24 cubed-sphere output files. Diagnostics are not yet implemented in GCHP and therefore the v1.0.0 bench
  17 KB (2,711 words) - 18:58, 10 May 2019
• Grid-independent emissions
  .../v2019-08/</tt>. To resolve the issues, SOAP and SOAS emissions from those files are ignored, and we instead compute those emissions directly from isoprene ...ag_just_once|HEMCO bug fix to prevent excessive attempts to read the HEMCO restart file when using GEOS-Chem "Classic"]] (added in 12.1.0)
  12 KB (1,541 words) - 14:50, 20 September 2022
• GEOS-Chem 14.0.1
  |[https://github.com/geoschem/geos-chem/pull/1473 Update Restart collection in HISTORY.rc to include BXHEIGHT and TROPLEV for all simulation .../GCHP/issues/259 Fix incorrect non-species data in GCHP mid-run checkpoint files]
  3 KB (400 words) - 17:56, 1 November 2022
• GEOS-Chem 14.2.1
  .../1929 Bugfix to initialize advected species to background values if not in restart file] .../geos-chem/pull/1931 Add warnings about area-dependency to GCHP HISTORY.rc files]
  12 KB (1,569 words) - 16:24, 2 April 2024
• GEOS-Chem model development priorities
  *[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.] |Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
  14 KB (2,006 words) - 16:35, 7 May 2024