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  • '''''The Intel Fortran compiler is our recommended proprietary compiler for GEOS-Chem.''''' === An Intel license is required ===
    55 KB (8,425 words) - 17:57, 24 October 2023
  • ...in the GEOS-Chem, which have to be implemented manually. Currently, there is not an adjoint equivalent of every part of GEOS-Chem. ...ass="math">∂<em>y</em> / ∂<em>x</em></span> is a scalar, and ''x'' is a 2-, 3- or 4-dimensional field). The adjoint code can also be used for inv
    80 KB (12,285 words) - 16:56, 18 June 2019
  • ...al <nowiki>[2000]</nowiki>] describes the algorithm in full. This scheme is also described in [http://acmg.seas.harvard.edu/publications/liu2001.pdf '' ...tation formation overhead. This will overestimate rainout effect when Fk+1 is much larger than Fk. Therefore, we now apply rainout effect to precipitati
    46 KB (7,334 words) - 20:14, 2 January 2019
  • ...concentrations. MIX shows an increase in the SO2 emission totals, but that is likely dominated by the increase in Indian SO2 emissions and the inclusion :The increase in global NO emissions is primarily driven by EMEP and AEIC emissions. There may be a problem in the
    154 KB (24,591 words) - 21:08, 20 September 2022
  • ...enomenon is due to lack of moisture handling within transport. Tracer mass is distributed relative to moist rather than dry air pressure and therefore pr Below is a high-level summary of the moisture updates added to v11-01. All of these
    46 KB (6,421 words) - 16:08, 7 December 2016
  • ...ons_when_GFED_is_turned_off|Fix bug in biomass burning emissions when GFED is turned off]] ...error trap in to avoid a segmentation fault when the DustGinoux extension is turned off]]
    88 KB (13,616 words) - 21:07, 20 September 2022
  • ...enomenon is due to lack of moisture handling within transport. Tracer mass is distributed relative to moist rather than dry air pressure and therefore pr Below is a high-level summary of the moisture updates added to v11-01. All of these
    44 KB (6,046 words) - 17:35, 6 December 2016
  • ...n a study by Mills (2005), the mean cross-section between 412.5 and 850 nm is estimated at 2.542 × 10−25 cm2. We also add photolysis of ClOO and ClNO2 *This file is only needed if the [[UCX chemistry mechanism]] is enabled.
    59 KB (8,891 words) - 18:49, 11 February 2023
  • ...tandard "classic" capability (GCC) but operates on a cubed sphere grid and is parallelized using a message-passing interface (MPI) implementation. GCHP i ...s (e.g. v11-02a, v11-02b, etc). The most recent preliminary v11-02 release is v11-02-Release-Candidate and the final release will be v11-02-Final availab
    41 KB (6,396 words) - 18:56, 10 May 2019
  • :My quick fix is very simple, which only changes one number in the source code: :Note that [this fix] is not ideal. We have a better way of doing it which requires some sort of cou
    70 KB (10,330 words) - 21:56, 20 December 2019
  • GEOS-Chem v9-02 is the first version of GEOS-Chem for which we issued a '''PROVISIONAL RELEASE ...Y_PBL_mixing_is_used|Corrected unit conversion bug when TURBDAY PBL mixing is used]]
    99 KB (14,884 words) - 20:45, 20 September 2022
  • *This feature is optional (default off) *This feature is optional (default off)
    95 KB (13,968 words) - 21:57, 20 December 2019
  • :Christoph Keller has treated OCPI in the same manner in HEMCO. If SOA is turned in in GEOS-Chem v10-01 and later versions, HEMCO will not calculate ...but SOA mass goes to other, SOA-specific tracers when the interactive SOA is turned on.
    166 KB (26,088 words) - 18:43, 28 May 2020
  • ...D = 75&mu;m, where <tt>U*,t</tt> is a minimum, and the total vertical flux is given by:</blockquote> ...tt> = 100 mm, recommended by Z03a for dust mobilization candidate cells. F is distributed by particle size as a globally uniform tri-modal lognormal prob
    50 KB (7,218 words) - 16:41, 16 November 2020
  • ...provide some general background information about how floating-point math is implemented on computers&mdash;and some common pitfalls that you may encoun == Floating-point is an approximation to the real number system ==
    18 KB (2,783 words) - 18:14, 7 December 2016
  • *The TOMAS team is doing further validation, which will continue into v11-01 ...he top-level data directory on your system. (If you don't know where that is, ask your sysadmin.)
    99 KB (15,209 words) - 20:26, 20 September 2022
  • <span style="color:green">'''''This page is for documentation of the isoprene chemistry mechanism (cf. Fabien Paulot) i This chemistry is largely base on Paulot et al.(2009a, ACP) for high-NOx regime and Paulot et
    52 KB (7,571 words) - 15:30, 5 December 2016
  • *A line continuation character (usually <code>&</code>) is placed in column 6 An example module is shown below.
    49 KB (7,048 words) - 19:59, 20 September 2022
  • ...GEOS-Chem is predominantly used for simulating tropospheric chemistry, it is necessary to deal with species that may have net stratospheric sources and ...each species. The new concentration at the end of each chemistry time step is then determined by solving
    47 KB (6,806 words) - 16:46, 15 October 2019
  • ...mistry mechanism is included in the "benchmark" chemistry mechanism, which is selected by default when you compile and run GEOS-Chem "out of the box". T * Photolysis and UV transfer is calculated using the [[FAST-JX v7.0 photolysis mechanism|Fast-JX v7.0a]] mo
    34 KB (5,019 words) - 15:57, 17 May 2018
  • ...ata produced 20X too much NH3 emissions as expected. We believe that this is likely attributed to an regridding error during the preparation of the orig ...verted to using the 1&deg; x 1&deg; GEIA natural NH3 emissions data, which is benchmarked with [[#v11-02f-Run1|v11-02f-Run1]]. We have also de-listed the
    158 KB (24,655 words) - 18:49, 28 May 2020
  • ...the TAO (Toronto Atmospheric Observatory) measurements, but now the model is way too low, with a very weak seasonal cycle. Replacing the emissions would ...ethane is fairly consistently degraded with the lower emissions, the same is not the case for propane where on balance there seems an improvement.
    68 KB (10,687 words) - 22:14, 19 June 2017
  • ...tt>upbdflx_mod.F</tt> was removed from GEOS-Chem. Stratospheric chemistry is now done in <tt>strat_chem_mod.F90</tt>.'''''</span> ...ugging approach which you have suggested and it indicates that the problem is coming from the triple loop:
    31 KB (4,189 words) - 15:54, 16 November 2017
  • Here is a description of the GEOS-Chem dry deposition scheme from several journal a <blockquote>Dry deposition of oxidants and water soluble species is computed using a resistance-in-series model based on the original formulati
    40 KB (5,780 words) - 14:58, 18 October 2019
  • ...efore combined several news items into a Fall 2011 newsletter. This issue is also the offical notification of the release of [[GEOS-Chem v9-01-02]]. ...eas.harvard.edugeos/geos_working_groups.html GEOS-Chem Working Group] that is most relevant to your research. You can also sign up for the relevant [[Su
    27 KB (4,206 words) - 14:06, 19 June 2019
  • Here is the assessment form for 1-month benchmark simulation '''v9-02r with GEOS-FP #*The v9-02r GEOS-FP benchmark (July 2013 met) uses GFED year 2011, which is the last available GFED3 year.
    106 KB (16,718 words) - 19:15, 19 June 2017
  • ...ts 2006 contains biofuels and not Streets 2000. So in biofuel_mod.f, there is to change the following lines to avoid double counting biofuel emissions ov ! If we are over SE ASIA and are using Streets 2006 (that is
    36 KB (5,768 words) - 15:06, 19 June 2019
  • ...nce formation of sulfate-nitrate-ammonium on coarse mode sea salt and dust is excluded. Submicrometer-sized particles are likely to reach gas-aerosol equ ...e humidities reach high values on a daily basis, the metastable assumption is acceptable.</blockquote>
    28 KB (4,263 words) - 17:37, 14 January 2020
  • ...="color:red"><big><strong>[https://geoschem.github.io/gamap-manual/ GAMAP] is now obsolete. We recommend using [https://gcpy.readthedocs.io GCPy] for an Routine <tt>CTM_GET_DATA</tt> is the main GAMAP data reader. It is called by the top-level <tt>GAMAP</tt> routine every time you read a file f
    41 KB (6,157 words) - 14:19, 19 July 2023
  • ...="color:red"><big><strong>[https://geoschem.github.io/gamap-manual/ GAMAP] is now obsolete. We recommend using [https://gcpy.readthedocs.io GCPy] for an ...a year. For example, the Julian Day number of 2008/01/10 is 10 (since it is the 10th day of 2008).
    13 KB (1,907 words) - 14:20, 19 July 2023
  • # <tt>GEOS.fp.asm</tt>, which indicates that the data is the GEOS-FP assimilated met product #the <tt>.nc4</tt> suffix which indicates that each file is stored in the netCDF-4 data format
    39 KB (6,282 words) - 11:36, 9 October 2018
  • ...w of how leaf area index (LAI) data is used in GEOS-Chem. Leaf area index is defined as the total leaf surface area divided by the total surface area of <span style="color:red">'''''There is an issue under investigation with v6 of the Yuan processed MODIS LAI. For m
    33 KB (5,406 words) - 21:11, 20 November 2023
  • ...hem, we pass arrays as arguments from one routine to another. But if this is not done properly, it can cause GEOS-Chem to use an excessive amount of mem This very technical description of how Fortran passes arrays to subroutines is taken from the [http://acmg.seas.harvard.edu/geos/wiki_docs/compilers/main_
    41 KB (5,296 words) - 20:26, 3 January 2017
  • ...i-model-dev.net/5/1471/2012/gmd-5-1471-2012.html (Article)] The net result is a 11-12% decrease in the global flux for isoprene, and a 30% increase in th ...ndard fullchem. Another under-the-hood change is that the PCEEA/PECCA flag is no longer needed since we use this scheme exclusively now.</blockquote>
    33 KB (4,994 words) - 16:44, 15 October 2019
  • '''''The GNU Fortran compiler is our recommended open-source compiler for GEOS-Chem.''''' ...rimented using different versions of GNU Fortran to build GEOS-Chem. Here is the compatibility matrix of GEOS-Chem versions vs. supported GNU Fortran co
    52 KB (7,498 words) - 17:56, 24 October 2023
  • Here is the assessment form for 1-month benchmark simulation '''v9-01-03-Fix_for_IF Here is the assessment form for 1-month benchmark simulation '''v9-01-03r'''.
    82 KB (12,907 words) - 20:59, 20 June 2017
  • ...e is invoked. However, these cause negligible slow down (the default model is actually slightly faster than the standard v9-01-03). Compiling with RRTMG= ...0 April 2015 and a 1-year benchmark simulation approved on 01 May 2015. It is included in the [[GEOS-Chem v10-01]] public release.
    26 KB (3,839 words) - 13:33, 8 October 2020
  • ...problem we were having with [[KPP solvers FAQ|KPP]] in GEOS-Chem v8-02-03 is now solved. We've posted patched files on the FTP site: :The problem is that, somehow, KPP considers 3 species declared as "dead" in <tt>globchem.d
    23 KB (3,379 words) - 17:43, 15 November 2017
  • Here is your December 2009 GEOS-Chem Newsletter. We would like to take this opport We encourage each GEOS-Chem user to join the Working Group that is most relevant to his/her area of research.
    14 KB (2,309 words) - 15:14, 19 June 2019
  • ...need to decide how this fits in with the nighttime isoprene chemistry that is currently under development. ...in this simulation. Hydroxyacetone has a 1-2 day lifetime. Methylglyoxal is treated as a tracer so that it can be emitted from biomass burning plumes a
    21 KB (3,022 words) - 14:58, 25 September 2017
  • ...mal configuration|Our most recent recommendation (cf. Philip et al 2016)]] is:''' ...the center of the "chemistry" timestep. The state of the atmosphere that is used to initialize the "chemistry" should therefore be close to the center
    25 KB (3,278 words) - 20:30, 2 January 2019
  • ...="color:red"><big><strong>[https://geoschem.github.io/gamap-manual/ GAMAP] is now obsolete. We recommend using [https://gcpy.readthedocs.io GCPy] for an ; This token is different depending on which OS you are using.
    19 KB (3,012 words) - 14:19, 19 July 2023
  • ...hem. It is contained in the doc/ folder of the GEOS-Chem source code, and is invoked when you type <tt>make doc</tt>. Therefore, you only have to downl Protex is a very useful Perl script that can strip information from a standard Fortra
    20 KB (2,871 words) - 21:59, 11 January 2019
  • :I think that it is safe to release [Linoz in v8-02-04]. However, we should acknowledge that i ...roduct with the new MEGAN biogenic emissions. The older AVHRR LAI product is [http://acmg.seas.harvard.edu/geos/wiki_docs/benchmarks/MODIS_LAI_vs_AVHRR_
    33 KB (4,899 words) - 17:46, 15 November 2017
  • ...stry package is a linearized chemistry mechanism for the stratosphere. It is designed to replace the older Synoz algorithm, which was a flux-based bound It is recommended to use the Linoz option in your GEOS-Chem simulations.
    10 KB (1,641 words) - 18:55, 16 August 2018
  • ...you to examine how much time is spent in a given GEOS-Chem routine. This is helpful in identifying potential bottlenecks caused by sub-optimally writte ...s://sourceware.org/binutils/docs/gprof/ The GNU profiler (<tt>gprof</tt>)] is a free, open source software package that you can use to determine which GE
    16 KB (2,242 words) - 14:12, 10 June 2019
  • ...scribes the APM (Advanced Particle Microphysics) option in GEOS-Chem. APM is one of two microphysics packages being incorporated into GEOS-Chem, the oth ...and equilibrium uptake of nitrate, ammonium, and secondary organic aerosol is explicitly simulated, along with the scavenging of secondary particles by p
    29 KB (4,467 words) - 18:28, 1 November 2021
  • == GEOS-Chem v9-01-03 is now released! == ...on, then the new grid-independent code is invoked; otherwise the new code is not compiled into the executable.
    18 KB (2,795 words) - 14:07, 19 June 2019
  • ...radiative environment for the beginning of the chemistry time step. This is wrong and produces a small but systematic bias. It should be calculated for ...nith angle (aka SUNCOS) at the midpoint of the chemistry timestep. SUNCOS is then fed to FAST-J, so that it computes the photolysis also at the midpoint
    28 KB (4,078 words) - 15:45, 19 June 2019
  • GEOS FP ("forward processing") is the current operational met data product from [http://gmao.gsfc.nasa.gov NA #GEOS-FP data is generated using a model which changes frequently and data are not retroacti
    27 KB (3,988 words) - 18:38, 28 May 2020
  • The following table is a quick summary of the GMAO meteorological data products that have been use |Is this data still being produced?
    30 KB (4,329 words) - 20:22, 20 September 2022
  • .../tt> will be removed (along with the other SMVGEAR routines) once FlexChem is implemented into GEOS-Chem.'''''</span> ...ave corrected this error by first making sure that each <tt>IL*</tt> index is nonzero before doing the corresponding <tt>IF ( J = ... )</tt> test:
    43 KB (6,754 words) - 15:22, 19 June 2019
  • ...s flux from level 1 to level 2 and ND26(:,:,LLPAR) is all zeros). This fix is added into [[GEOS-Chem v11-02#v11-02b|v11-02b]]. ...planation below is intended for GEOS-Chem versions 8-01-03 and newer, that is the versions with the updated advection.
    8 KB (1,375 words) - 20:22, 2 January 2019
  • There is an instance of the compiler installed on glooscap, which you can load by do '''geos-chem-libraries-intel11''' is a bundle of software required to build and run the latest version of GEOS-C
    14 KB (2,171 words) - 15:18, 19 June 2019
  • ...al Panel on Climate Change (hereinafter IPCC) [2001]. Anthropogenic sulfur is emitted as SO2 except for a small fraction as sulfate (5% in Europe and 3% ...y averages from ''Kettle et al.'' [1999], and the transfer velocity of DMS is computed using an empirical formula from ''Liss and Merlivat'' [1986] as a
    17 KB (2,587 words) - 20:10, 19 September 2022
  • #TURBDAY (''Dale Allen, U. Maryland''): Full PBL mixing. This is contained in source code file <tt>pbl_mix_mod.f</tt>. ...F (''Jintai Lin and Michael McElroy''): Non-local PBL mixing scheme. This is contained in the source code files <tt>vdiff_pre_mod.f</tt> and <tt>vdiff_m
    8 KB (1,241 words) - 20:42, 13 July 2023
  • :Everything is fine if LD24 = LLPAR but it seems to go wrong if you try to output a subset SCALEX = SCALE_A1 ! MERRA SLP is hourly
    38 KB (5,526 words) - 15:22, 19 June 2019
  • ===What is involved in running a nested grid simulation?=== === Is it possible to run nested GEOS-Chem simulations on the AWS cloud? ===
    11 KB (1,499 words) - 19:04, 13 July 2020
  • This page is intended to incorporate the latest version of [http://jpldataeval.jpl.nasa. ...ature sensitivity value, E/R, is entered following JPL format, so the sign is opposite of the GEOS-Chem format. The updates will be tested in the benchm
    34 KB (5,418 words) - 18:21, 9 March 2016
  • ...deg; lat x 0.625&deg; lon x 72 hybrid sigma/pressure levels. MERRA-2 data is stored on the same vertical grid as the [[GEOS-FP|GEOS-5 "forward processin ...data, except that the native resolution of the archived MERRA-2 data files is now 0.5&deg; x 0.625&deg;.'''''</span>
    25 KB (3,634 words) - 18:47, 28 May 2020
  • Here is your March 2010 Newsletter. We encourage each GEOS-Chem user to join the Working Group that is most relevant to his/her area of research.
    13 KB (2,023 words) - 22:47, 6 December 2016
  • The next telecon is scheduled for May-June 2012, date TBD. Here is a summary of [[GEOS-Chem Support Team]] activities:
    22 KB (3,410 words) - 18:27, 8 December 2016
  • ...determined by emissions and transport (and therefore not a tracer). If so, is there a way to easily visualize or extract these input concentrations? :Yes, in the full chemistry mechanism, CH4 is a constant. The values for years and latitude bands are set by routine <co
    15 KB (2,305 words) - 20:53, 20 September 2022
  • *Surface upwards (in GEOS-Chem "Classic"); L=1 is the surface *Surface upwards (in met field files read in by GEOS-Chem); L=1 is the surface
    34 KB (3,049 words) - 15:03, 19 June 2019
  • ...n 8-byte integer by compiling with <tt>-i8</tt>. In most circumstances it is OK to use 4-byte integers, unless you need to point to a memory location or ...term <tt>DOUBLE PRECISION</tt>. This is the same as <tt>REAL*8</tt> -- it is an 8-byte floating point.
    21 KB (3,003 words) - 15:39, 19 June 2019
  • ...="color:red"><big><strong>[https://geoschem.github.io/gamap-manual/ GAMAP] is now obsolete. We recommend using [https://gcpy.readthedocs.io GCPy] for an A good primer for creating and manipulating IDL color tables is: [http://acmg.seas.harvard.edu/forum_files/cdh_ColorInIDL.pdf ''Working wi
    10 KB (1,773 words) - 14:20, 19 July 2023
  • ...GEOS-Chem Meeting]! A quick comparison with online GEOS-Chem calculations is given in [http://pumpkin.aquila.infn.it/flexaod/download/FlexAODv1.4.pdf th This will create the subdirectory "<tt>flexaod_vX.Y</tt>", here is a quick look at the content:
    22 KB (3,327 words) - 20:58, 20 September 2022
  • ...ault GCHP run directory settings. For all simulations, the following setup is used: The GCHP simulation is performed with the following computational environment and model setup:
    17 KB (2,711 words) - 18:58, 10 May 2019
  • ...or:red"><big><strong>[https://geoschem.github.io/gamap-manual/GAMAP GAMAP] is now obsolete. We recommend using [https://gcpy.readthedocs.io GCPy] for an ...es</tt>, and this value is then assigned to the <tt>dim</tt> array (which is an INT array; max value 32767).
    16 KB (2,641 words) - 19:09, 16 September 2022
  • ...ctober 5, or October 12). We will announce the meeting date as soon as it is established. ...ning of the GEOS–Chem community and faster sharing of new model features is promoted by users offering co-authorship for recent developments.
    11 KB (1,728 words) - 18:13, 8 December 2016
  • ...chem/issues/372 Fix run-time error when optional Luo wet deposition scheme is turned on] ...Skip reading FLASH_DENS and CONV_DEPTH fields when lightning NOx extension is turned off]
    133 KB (18,781 words) - 21:13, 21 June 2021
  • # v8-01-01 Run0 vs. v8-01-01 Run1 is a clean comparison for the switch from ISORROPIA to RPMARES. .../cm3 in simulations that he had performed. '''''Therefore the "quick fix" is probably the major factor driving the drop in mean OH in the v8-01-04 runs.
    23 KB (3,442 words) - 17:39, 15 November 2017
  • Here is your October 2009 GEOS-Chem Newsletter! Happy autumn to one and all! ...://acmg.seas.harvard.edu/geos/geos_working_groups.html Working Group] that is most relevant to his/her area of research. For more information about a pa
    9 KB (1,417 words) - 15:20, 19 June 2019
  • ...nt [http://gmao.gsfc.nasa.gov NASA/GMAO] operational met data product. It is produced with a native resolution of 0.25&deg; (lon) x 0.3125&deg; (lat) x ...imilation System (aka GEOS-DAS). This means that the "5.7.x" nomenclature is no longer correct. For this reason, we shall refer to this product as GEOS
    34 KB (5,204 words) - 14:15, 15 May 2017
  • ...style="color:red">'''''NOTE: The QFED biomass burning emissions inventory is available for simulations with [[GEOS-Chem v10-01]] and higher versions via ...degrees. Generally, the QFED data stored in the [[HEMCO data directories]] is the improved 0.1x0.1 product. Occasionally the 0.25x0.3125 product may be s
    9 KB (1,367 words) - 19:33, 19 July 2018
  • ...e="color:red"><big><strong>[https://geoschem.github.io/gamap-manual GAMAP] is now obsolete. We recommend using [https://gcpy.readthedocs.io GCPy] for an ...tring of text characters is equivalent to an array of byte values. A byte is a collection of 8 bits and may express values from 0-255. The [http://www.
    14 KB (2,292 words) - 14:20, 19 July 2023
  • ...or:red"><big><strong>[https://geoschem.github.io/gamap-manual/GAMAP GAMAP] is now obsolete. We recommend using [https://gcpy.readthedocs.io GCPy] for an This is the same as (showing the implicit lon/lat range associated with the data):
    13 KB (1,949 words) - 19:08, 16 September 2022
  • Here is your May 2010 Newsletter...just in time for the Memorial Day Weekend! ...ning of the GEOS–Chem community and faster sharing of new model features is promoted by users offering co-authorship for recent developments.
    11 KB (1,703 words) - 15:44, 19 June 2019
  • <span style="color:red">'''''Some of this information is out of date. We are in the process of updating the GEOS-Chem Classic user m There is no "preferred" resolution for generating boundary conditions. More often t
    32 KB (4,575 words) - 19:09, 17 August 2021
  • Here is your August 2010 GEOS-Chem Newsletter...just in time for the dog days of su ...ning of the GEOS–Chem community and faster sharing of new model features is promoted by users offering co-authorship for recent developments.
    12 KB (1,942 words) - 18:13, 8 December 2016
  • [[GEOS-Chem v9-02]] is our development version. It contains several important scientific updates ...e an error is discovered. Then we have to send out a bug fix patch, which is a inconvenience. Furthermore, some code submissions that we receive have on
    18 KB (2,894 words) - 16:50, 8 December 2016
  • ...ou can use to write data to and read data from netCDF files. This package is contained within GEOS-Chem (in the <tt>NcdfUtil/</tt> folder, but may also The NcdfUtilities code is used by GEOS-Chem "Classic" simulations to perform netCDF file I/O. The so
    20 KB (3,149 words) - 20:10, 22 May 2017
  • ...RE v7.1: This version is used with the GEOS-3 met fields. The source code is contained in F90 module <tt>tpcore_mod.f</tt>. ...he GEOS-4 and GEOS-5 met fields and for GCAP simulations. The source code is contained in the F90 module <tt>tpcore_fvdas_mod.f90</tt>. This version of
    12 KB (1,903 words) - 20:00, 2 January 2019
  • Stratospheric chlorine chemistry is from UCX [Eastham et al 2014]. Tropospheric chlorine chemistry follows that ...ICl and IBr, instead of I2 as in Sherwen et al [2016a]. Another key change is that the sea-surface iodide now uses the value predicted by the relationshi
    21 KB (3,286 words) - 16:51, 15 July 2019
  • Here is your February 2010 Newsletter. We encourage each GEOS-Chem user to join the Working Group that is most relevant to his/her area of research.
    11 KB (1,688 words) - 15:20, 19 June 2019
  • Here is your September GEOS-Chem Newsletter. The next GEOS-Chem Steering Committee date is TBD (possibly January 4th). We will confirm the date shortly.
    14 KB (2,161 words) - 18:18, 8 December 2016
  • '''''NOTE: Registration is now closed.''''' '''Matthew Cooper''', who is working with Randall Martin at Dalhousie University, will join the GEOS-Che
    20 KB (3,183 words) - 14:05, 19 June 2019
  • The original reference document for the GEOS-Chem sea salt simulation is [http://acmg.seas.harvard.edu/publications/2005/alexander2005.pdf ''Alexand :Here is a summary of the changes:
    22 KB (3,255 words) - 19:56, 2 January 2019
  • ...style="color:red">'''''NOTE: The GFAS biomass burning emissions inventory is available for simulations with [[GEOS-Chem 12#12.2.0|GEOS-Chem 12.2.0]] and ...files are produced at a global. 0.1x0.1 resolution. A full list of fields is given in the File Contents section.
    16 KB (2,611 words) - 19:52, 1 April 2019
  • <span style="color:red"><big><strong>The POPs simulation is currently stale in [[GEOS-Chem 13.0.0]] and later versions. We look to the ...d approved on 14 Sept 2015. Additional benchmarking of the POPs simulation is in progress.'''''</span>
    15 KB (2,271 words) - 14:18, 20 September 2022
  • ...page describes the TOMAS aerosol microphysics option in GEOS-Chem. TOMAS is one of two aerosol microphysics packages being incorporated into GEOS-Chem, ...resolution are sulfate, sea-salt, OC, EC, and dust. An advantage of TOMAS is the full size resolution for all chemical species and the conservation of a
    18 KB (2,561 words) - 20:18, 22 September 2022
  • ...his more clearly shows the progression of version numbers. Note that this is the opposite of how versions are displayed in the Git history.'' While this versioning system worked well, it is not in line with accepted software industry best practice. Also the change
    9 KB (1,412 words) - 21:08, 1 June 2023
  • ..., and divide by the area on the output grid, such that the total quantity is preserved. ...at each grid cell but the mass will be smaller for each grid cell. So mass is an extensive variable and the others are intensives.
    6 KB (1,114 words) - 21:27, 13 July 2023
  • ...ous full-chemistry simulation (more on that below). Because the simulation is linear, CO can be “tagged” by its source region/type. The regions and t ...d by 19% and biomass burning emissions are scaled by 11%. More information is given in Duncan et al. (2007). See note below!<br><br>
    13 KB (1,970 words) - 17:33, 24 October 2023
  • #<p>Once the developer is satisfied, GEOS–Chem Model Scientist Daniel Jacob will quickly review the ...EDT aircraft emissions update (submitted by Steven Barrett et al from MIT) is technically ready to be added into the standard code. However, the FAA has
    20 KB (3,001 words) - 15:15, 19 June 2019
  • ...dary Layer scheme] for GEOS-5 only, developed by Jintai Lin.<br>Note: This is an option in <tt>input.geos</tt> ...as reactions for the chemistry (however, their small surface contribution is moved to the PBL scheme code as other emissions). These changes are necessa
    14 KB (2,160 words) - 17:42, 15 November 2017
  • Here is the June 2009 GEOS-Chem Newsletter. Happy Summer Solstice! |Validation is ongoing
    13 KB (1,989 words) - 18:12, 8 December 2016
  • ...al Interpolation - Since most regional models use a curvilinear grid, this is the simplest step. ...olation - Many regional models use a pure sigma-pressure coordinate, which is different from GEOS-Chem's hybrid eta-sigma.
    7 KB (1,090 words) - 14:23, 12 April 2018
  • A belated Happy St. Patrick's Day to one and all! Here is the March 2009 edition of the GEOS-Chem newsletter. ...n at the same time. This will allow us to serve you better. If one of us is unavailable then the others will be able to respond to you.
    8 KB (1,338 words) - 15:19, 19 June 2019
  • FlexGrid is a new functionality that will allow users to define the grid for their GEOS ### not contain emissions data. The extension number is set to wildcard
    21 KB (2,963 words) - 05:45, 8 October 2023

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