4. GEOS–CHEM Shared Data Directories

4.1 The /geos/data/GEOS_2x2.5 and /geos/data/GEOS_4x5 directories

The GEOS–CHEM model will read input files from two different directories: the data directory and the run directory. In this section we describe the data directory. (See Chapter 5 for a full description of the files which are included in the run directory.)

he data directory contains globally-accessible, read-only data files (such as anthropogenic emissions & scale factors, biomass burning emissions, leaf area indices, etc).

On the Harvard internal filesystem, the data directories are stored under the names:

/data/ctm/GEOS_2x2.5

/data/ctm/GEOS_4x5

However, the same data can also be downloaded by users outside Harvard from our data server geos.as.harvard.edu (using ncftp or scp) , under the directory names:

/geos/data/GEOS_2x2.5

/geos/data/GEOS_4x5

where:

/geos/data/GEOS_2x2.5		Contains data files for 2 x 2.5 GEOS–1, GEOS–STRAT, GEOS–3, and GEOS–4 grids. Data files are stored into various subdirectories of this root directory.
/geos/data/GEOS_4x5		Contains data files for 4 x 5 GEOS–1, GEOS–STRAT, GEOS–3, and GEOS–4 grids. Data files are partitioned into various subdirectories of this root directory.

(If you do not have access to the data server geos.as.harvard.edu, please contact Jack Yatteau, email: jhy at io dot harvard dot edu.)

The following extensions are used to denote different GEOS model types:

geos.2x25	GEOS	2 x 2.5 grid, surface data only (144 x 91)
geos1.2x25	GEOS–1	2 x 2.5 grid, 20 vertical levels
geoss.2x25	GEOS–STRAT	2 x 2.5 grid, 26 vertical levels
geos3.2x25	GEOS–3	2 x 2.5 grid, 48 vertical levels
geos4.2x25	GEOS–4	2 x 2.5 grid, 55 vertical levels
geos.4x5	GEOS	4 x 5 grid, surface only (72 x 46)
geos1.4x5	GEOS–1	4 x 5 grid, 20 vertical levels
geoss.4x5	GEOS–STRAT	4 x 5 grid, 26 vertical levels
geos3.4x5	GEOS–3	4 x 5 grid, 48 vertical levels
geos4.4x5	GEOS–4	4 x 5 grid, 55 vertical levels

Files with a 2x25 extension are located in subdirectories of /geos/data/GEOS_2x2.5.

Files with a 4x5 extension are located in subdirectories of /geos/data/GEOS_4x5.

Files that are grid-independent are typically located in subdirectories of both /geos/data/GEOS_2x2.5 and /geos/data/GEOS_4x5.

Each subdirectory of /geos/data/GEOS_2x2.5 and /geos/data/GEOS_4x5 now contains a README file for further reference.

4.1.1 The C3H8_C2H6_200109/ subdirectories

C3H8_C2H6_ngas.geos.2x25 C3H8_C2H6_ngas.geos.4x5

Anthropogenic propane and ethane emissions computed from natural gas by James Wang and Yaping Xiao.

4.1.2 The CH3I/ subdirectories

ch4_rice.geos.2x25 ch4_rice.geos.4x5	Monthly methane emissions from rice paddies for CH3I simulation (Fung et al, 1991)
ch4_rice.geos.2x25 ch4_wetl.geos.4x5	Monthly methane emissions from wetlands for CH3I simulation (Fung et al, 1991)
ocean_ch3i.geos.2x25 ocean_ch3i.geos.4x5	Aqueous concentrations of ocean CH3I (contact: Martin Schultz)
ocean_DOC.geos.4x5	Monthly mean values of Dissolved Organic Carbon (for CH3I simulation). Contact: Martin Schultz)
ocean_npp.geos.2x25 ocean_npp.geos.4x5	Net Primary Productivity from the ocean (for CH3I simulation). Contact: Martin Schultz.
radswg.geos.[res]	Contains monthly averaged solar insolation at the ground (for CH3I simulation).

4.1.3 The CH4_200202/ subdirectories

CH4emis.geos.4x5.1988 CH4emis.geos.4x5.1989 CH4emis.geos.4x5.1990 CH4emis.geos.4x5.1991 CH4emis.geos.4x5.1992 CH4emis.geos.4x5.1993 CH4emis.geos.4x5.1994 CH4emis.geos.4x5.1995 CH4emis.geos.4x5.1996 CH4emis.geos.4x5.1997 CH4emis.geos.4x5.1998

Methane emissions data from Fung et al, 1991. Yearly emissions from animals, coal mining, gas leakage, gas venting are included, as well as monthly emissions from rice paddies. Units are molecules CH4/cm2/s.

4.1.4 The RnPbBe_200203/ subdirectories

7Be.Lal	Source of 7Be (Lal & Peters. 1967, used for 222Rn-210Pb-7Be simulations)
tracer.moments	Land fractions per grid box for the 222Rn - 210Pb - 7Be simulation. (Liu et al, 2000)

4.1.5 The acetone_200108/ subdirectories

JO1D.geos.2x25 JO1D.geos.4x5	Monthly mean J(O1D) fields at the surface, used to compute emissions of biogenic acetone. From Brendan Field.
resp.geos.2x25 resp.geos.4x5	Monthly mean heterotrophic respiration fields, compute emissions of biogenic acetone. From Brendan Field.

4.1.6 The aerosol_200106/ subdirectories

aerosol.geos1.2x25 aerosol.geos1.4x5	3-D monthly mean aerosol fields from Mian Chin, on the 20-layer GEOS–1 vertical grid.
aerosol.geos3.2x25 aerosol.geos3.4x5	3-D monthly mean aerosol fields from Mian Chin, on the 48-layer GEOS–3 vertical grid.
aerosol.geos4.2x25 aerosol.geos4.4x5	3-D monthly mean aerosol fields from Mian Chin, on the 55-layer GEOS–4 vertical grid.
aerosol.geoss.2x25.1996 aerosol.geoss.4x5.1996	3-D monthly mean aerosol fields for 1996 from Mian Chin, on the 26-layer GEOS–STRAT vertical grid.
aerosol.geoss.2x25.1997 aerosol.geoss.4x5.1997	3-D monthly mean aerosol fields for 1997 from Mian Chin, on the 26-layer GEOS–STRAT vertical grid.

NOTE: GEOS–CHEM v6–02–05 now allows you to perform on-line emissions and chemistry for the carbon and sea-salt tracers instead of reading these monthly mean fields from disk.

If the logical switch LCARB = T (see the input.geos file), then emissions and chemistry will be done online for the Hydrophilic and Hydrophobic Black Carbon and Organic Carbon tracers. If LCARB = F, then these quantities will not be carried as tracers and instead monthly mean concentrations will be read from disk.

If the logical switch LSSALT = T (see the input.geos file), then emissions and chemistry will be done online for the accumulation mode and coarse mode sea salt aerosol tracers. If LSSALT = F, then these quantities will not be carried as tracers and instead monthly mean concentrations will be read from disk.

4.1.7 The aircraft_NOx_200202/ subdirectories

airjan.2x25 airfeb.2x25 airmar.2x25 airapr.2x25 airmay.2x25 airjun.2x25 airjul.2x25 airaug.2x25 airsep.2x25 airoct.2x25 airnov.2x25 airdec.2x25 airjan.4x5 airfeb.4x5 airmar.4x5 airapr.4x5 airmay.4x5 airjun.4x5 airjul.4x5 airaug.4x5 airsep.4x5 airoct.4x5 airnov.4x5 airdec.4x5

Monthly mean emissions of Aircraft NOx, in kg NOx/4h. Based on Wang et al, 1998.

4.1.8 The ann_mean_trop_200202/ subdirectories

ann_mean_trop.geos1.2x25 ann_mean_trop.geos1.4x5	Annual mean tropopause heights (in model levels) and flags for the ND27 diagnostic (cross-tropopause fluxes) for the GEOS–1 grid.
ann_mean_trop.geoss.2x25 ann_mean_trop.geoss.4x5	Annual mean tropopause heights (in model levels) and flags for the ND27 diagnostic (cross-tropopause fluxes) for the GEOS–STRAT grid.
ann_mean_trop.geos3.2x25 ann_mean_trop.geos3.4x5	Annual mean tropopause heights (in model levels) and flags for the ND27 diagnostic (cross-tropopause fluxes) for the GEOS–3 grid.
ann_mean_trop.geos4.2x25 ann_mean_trop.geos4.4x5	Annual mean tropopause heights (in model levels) and flags for the ND27 diagnostic (cross-tropopause fluxes) for the GEOS–4 grid.

4.1.9 The biofuel_200202/ subdirectories

biofuel.geos.2x25 biofuel.geos.4x5

Biofuel burning emissions from Jennifer Logan, Rose Yevich, and Bryan Duncan. Binary punch file format. Revised version, Feb 2002, now includes emissions of 10 tracers (NOx, CO, ALK4, ACET, MEK, ALD2, PRPE, C3H8, CH2O, C2H6). The emissions of ACET, C2H6, and C3H8 are now given in Tg C instead of Tg tracer, in order to be consistent with the way the code reads them in from disk. These files supersede the files in biofuel_20007/, biofuel_200104/, and biofuel_obsolete.

4.1.10 The biogenic_200203/ subdirectories

isopemis.table	Isoprene emissions by Olson land type (Wang et al, 1998; Bey et al, 2000)
light.table	Polynomial coefficients for isoprene emissions (Wang et al, 1998)
monotemis.table	Biogenic emissions of monoterpenes
monotemis.v4-13.table	Biogenic emissions of monoterpenes, with emissions from some landtypes modified. Read from this file if you are using GEOS–CHEM v. 4.13 or higher.

4.1.11 The biomass_200110/ subdirectories

bioburn.interannual.geos.2x25.1996 bioburn.interannual.geos.2x25.1997 bioburn.interannual.geos.2x25.1998 bioburn.interannual.geos.2x25.1999 bioburn.interannual.geos.2x25.2000 bioburn.interannual.geos.4x5.1996 bioburn.interannual.geos.4x5.1997 bioburn.interannual.geos.4x5.1998 bioburn.interannual.geos.4x5.1999 bioburn.interannual.geos.4x5.2000	Biomass burning emissions for 1996-2000 with interannual variability, compiled by Randall Martin. Binary punch file format. Revised version, October 2001, now includes emissions of 10 tracers (NOx, CO, ALK4, ACET, MEK, ALD2, PRPE, C3H8, CH2O, C2H6). These files supersede the files in bioburn_200104/.
bioburn.seasonal.geos.2x25 bioburn.seasonal.geos.4x5	Monthly mean (seasonal) biomass burning emissions from Jennifer Logan, Rose Yevich, and Amanda Staudt. Binary punch file format. Revised version, October 2001, now includes emissions of 10 tracers (NOx, CO, ALK4, ACET, MEK, ALD2, PRPE, C3H8, CH2O, C2H6). These files supersede the files in bioburn_200104/.
bioburn.annual.geos.2x25 bioburn.annual.geos.4x5	Annual (sum of all months) biomass burning emissions from Jennifer Logan, Rose Yevich, and Amanda Staudt. Binary punch file format. Revised version, October 2001, now includes emissions of 10 tracers (NOx, CO, ALK4, ACET, MEK, ALD2, PRPE, C3H8, CH2O, C2H6). These files supersede the files in bioburn_200104/.

4.1.12 The cms_OH_200202/ subdirectories

cms_OH.geos1.4x5	OH from Clarisa Spivakovsky, regridded to GEOS–1 20 layer grid (for CO w/ parameterized OH)
cms_OH.geos1.4x5	OH from Clarisa Spivakovsky, regridded to GEOS–STRAT 26 layer grid (for CO w/ parameterized OH)
cms_OH.geos1.4x5	OH from Clarisa Spivakovsky, regridded to GEOS–3 48 layer grid (for CO w/ parameterized OH)

4.1.13 The drydep_200203/ subdirectories

drydep.coef	Polynomial coefficients for dry deposition (Wesely, 1989)
drydep.table	Olson land types and dry deposition resistances (Wesely, 1989; Jacob et al, 1990, 1992)

4.1.14 The dust_200203/ subdirectories

dust.geos1.2x25 dust.geos1.4x5	Mineral dust optical depths for FAST-J on GEOS–1 20 layer grid (supplied to us by Paul Ginoux)
dust.geoss.2x25.1996 dust.geoss.4x5.1996	1996 Mineral dust optical depths for FAST-J on GEOS–STRAT 26 layer grid for the year 1996 (supplied to us by Paul Ginoux)
dust.geoss.2x25.1997 dust.geoss.4x5.1997 dust.geoss.2x25.1997 dust.geoss.4x5.1997	1997 Mineral dust optical depths for FAST-J on GEOS–STRAT 26 layer grid for the year 1997 (supplied to us by Paul Ginoux)
dust.geoss3.2x25 dust.geoss3.4x5	Mineral dust optical depths for FAST-J on GEOS–3 48 layer grid (supplied to us by Paul Ginoux)
dust.geoss4.2x25 dust.geoss4.4x5	Mineral dust optical depths for FAST-J on GEOS–4 55 layer grid (supplied to us by Paul Ginoux)

NOTE: GEOS–CHEM v6–02–05 now allows you do on-line dust mobilization by carrying 4 extra dust tracers instead of reading these monthly mean dust-fields from disk. e input.geos file, if the logical switch LDUST = T (see the input.geos file) then the on-line dust mobilization will be switched on. (You have a choice of either using the DEAD scheme from Charlie Zender or the GOCART scheme of Paul Ginoux).

4.1.15 The fastj_200203/ subdirectories

jv_atms.dat	FAST-J "standard" temperature and ozone climatological profiles (Wild et al, 1999)
jv_atms.dat.1997	FAST-J "standard" temperature and ozone climatological profiles scaled to 1997 (Andrew Fusco)
jv_spec.dat	FAST-J species absorption cross sections and quantum yields with pressure dependencies (Wild et al, 1999)
jv_spec.dat.rvm	jv_spec.dat file which also contains additional cross-section information for 7 mineral dust types (Randall Martin)
jv_spec.dat.v4-30	jv_spec.dat file which also contains cross-sections for 7 mineral dust types, and for the combination of 5 aerosol types AND 5 relative humidity bins (by Randall Martin). You should use this file if you are using GEOS–CHEM v. 4.30 or 4.31.
jv_spec.dat.v4-32	jv_spec.dat file which contains everything in jv_spec.dat.v4-30, but has cross-sections for JO1D taken from JPL 2000 (by Mat Evans). You should use this file if you are using GEOS–CHEM v. 4.32 or higher.

4.1.16 The fossil_200104/ subdirectories

merge_nobiofuels.geos.2x25 merge_nobiofuels.geos.4x5	Anthropogenic emissions, with contributions from biofuels removed so as to avoid double-counting. Version released April 2001, by Jennifer Logan, Rose Yevich, and Amanda Staudt. Binary punch file format. Contains 10 emission species. (NOx, CO, ALK4, ACET, MEK, ALD2, PRPE, C3H8, CH2O, ETHE, SOx). These files now supersede the merge.4x5_CTM* and merge.2x25_CTM* files.
MELD_N96_70_HC	File containing day of week scale factors for anthropogenic emissions for the GEOS–CHEM 4 x 5 grid.
MELD2x25	File containing day of week scale factors for anthropogenic emissions for the GEOS–CHEM 2 x 2.5 grid.

4.1.17 The leaf_area_index_200202/ subdirectories

lai01.global lai02.global lai03.global lai04.global lai05.global lai06.global lai07.global lai08.global lai09.global lai10.global lai11.global lai12.global	Global leaf area indices by month (Wang et al, 1998)
vegtype.global	Vegetation types -- Olson classification (Wang et al, 1998)

4.1.18 The lightning_NOx_200203/ subdirectories

light_dist.dat	Vertical distribution of lightning NOx emissions, with a vertical resolution of 0.16 km. This is used for GEOS–1 or GEOS–STRAT vertical grids. (Pickering, 1998)
light_dist.dat.geos3	Vertical distribution of lightning NOx emissions, with a vertical resolution of 0.05 km. This is used for the GEOS–3 vertical grid. (Pickering, 1998)

4.1.19 The pco_lco_200203/ subdirectories

COloss.geos1.2x25 COloss.geos1.4x5	Stratospheric L(CO) rates obtained from Hans Schneider's 2D model (Schneider et al, 2000), regridded to the GEOS–1 20 layer vertical grid.
COloss.geoss.2x25 COloss.geoss.4x5	Stratospheric L(CO) rates obtained from Hans Schneider's 2D model (Schneider et al, 2000), regridded to the GEOS–STRAT 26 layer vertical grid.
COloss.geos3.2x25 COloss.geos3.4x5	Stratospheric L(CO) rates obtained from Hans Schneider's 2D model (Schneider et al, 2000), regridded to the GEOS–3 48 layer vertical grid.
COloss.geos4.2x25 COloss.geos4.4x5	Stratospheric L(CO) rates obtained from Hans Schneider's 2D model (Schneider et al, 2000), regridded to the GEOS–4 55 layer vertical grid.

4.1.20 The pnoy_200106/ subdirectories

pnoy_above_10mb.geos1.2x25 pnoy_above_10mb.geos1.4x5	P(NOy), taken from Hans Schneider's 2D model. Used for the NOy upper boundary flux condition for the GEOS–1 20 layer vertical grid. (Schneider et al, 2000). Revised Version June 2001.
pnoy_nox_hno3.geos1.2x25 pnoy_nox_hno3.geos1.4x5	Contains P(NOy), [NO], [NO2], [NO3], and [HNO3] taken from a 2-D stratospheric model (Schneider et al, 2000). Used for the NOy upper boundary flux condition for the GEOS–1 20 layer vertical grid. Revised Version June 2001 by Bob Yantosca to correct some negative numbers in the original files.
pnoy_nox_hno3.geoss.2x25 pnoy_nox_hno3.geoss.4x5	Contains P(NOy), [NO], [NO2], [NO3], and [HNO3] taken from a 2-D stratospheric model (Schneider et al, 2000). Used for the NOy upper boundary flux condition for the GEOS–STRAT 26 layer vertical grid. Revised Version June 2001 by Bob Yantosca to correct some negative numbers in the original files.
pnoy_nox_hno3.geos3.2x25 pnoy_nox_hno3.geos3.4x5	Contains P(NOy), [NO], [NO2], [NO3], and [HNO3] taken from a 2-D stratospheric model (Schneider et al, 2000). Used for the NOy upper boundary flux condition for the GEOS–3 48 layer vertical grid. Revised Version June 2001 by Bob Yantosca to correct some negative numbers in the original files.
pnoy_nox_hno3.geos4.2x25 pnoy_nox_hno3.geos4.4x5	Contains P(NOy), [NO], [NO2], [NO3], and [HNO3] taken from a 2-D stratospheric model (Schneider et al, 2000). Used for the NOy upper boundary flux condition for the GEOS–4 55 layer vertical grid. Created January 2003.

4.1.21 The scalefoss_200202/ subdirectories

scalefoss.liq.2x25.1960 scalefoss.liq.2x25.1985 scalefoss.liq.2x25.1986 scalefoss.liq.2x25.1987 scalefoss.liq.2x25.1988 scalefoss.liq.2x25.1989 scalefoss.liq.2x25.1990 scalefoss.liq.2x25.1991 scalefoss.liq.2x25.1992 scalefoss.liq.2x25.1993 scalefoss.liq.2x25.1994 scalefoss.liq.2x25.1995 scalefoss.liq.2x25.1996 scalefoss.liq.4x5.1960 scalefoss.liq.4x5.1985 scalefoss.liq.4x5.1986 scalefoss.liq.4x5.1987 scalefoss.liq.4x5.1988 scalefoss.liq.4x5.1989 scalefoss.liq.4x5.1990 scalefoss.liq.4x5.1991 scalefoss.liq.4x5.1992 scalefoss.liq.4x5.1993 scalefoss.liq.4x5.1994 scalefoss.liq.4x5.1995 scalefoss.liq.4x5.1996

Scale factor maps to adapt fossil fuel emissions (baseline 1985) to years following 1985. scalefoss.liq* are used for CO and VOC emissions. These scaling factors were derived from liquid fuel CO2 emissions with some adjustments for regulated countries. Updated on 09 Apr 2001 by Andrew Fusco and Bob Yantosca in order to add emissions data from CDIAC for 1996. Scale factors for 1997, 1998 were added in late 2001. Contact: Contact: Bob Yantosca.

scalefoss.tot.2x25.1960 scalefoss.tot.2x25.1985 scalefoss.tot.2x25.1986 scalefoss.tot.2x25.1987 scalefoss.tot.2x25.1988 scalefoss.tot.2x25.1989 scalefoss.tot.2x25.1990 scalefoss.tot.2x25.1991 scalefoss.tot.2x25.1992 scalefoss.tot.2x25.1993 scalefoss.tot.2x25.1994 scalefoss.tot.2x25.1995 scalefoss.tot.2x25.1996 scalefoss.tot.4x5.1960 scalefoss.tot.4x5.1985 scalefoss.tot.4x5.1986 scalefoss.tot.4x5.1987 scalefoss.tot.4x5.1988 scalefoss.tot.4x5.1989 scalefoss.tot.4x5.1990 scalefoss.tot.4x5.1991 scalefoss.tot.4x5.1992 scalefoss.tot.4x5.1993 scalefoss.tot.4x5.1994 scalefoss.tot.4x5.1995 scalefoss.tot.4x5.1996 scalefoss.tot.4x5.1997 scalefoss.tot.4x5.1998

Likewise for NOx emissions. Derived from total CO2 emissions. Updated on 09 Apr 2001 by Andrew Fusco and Bob Yantosca in order to add emissions data from CDIAC for 1996. Scale factors for 1997, 1998 were added in late 2001. Contact: Bob Yantosca.

4.1.22 The slowj_200203/ subdirectories

8col.dat	Cross-sections of SLOW-J photolysis species
jvalue.dat	SLOW-J input file (for sol.f), contains wavelength bins, temperature, and O3 profiles
o3du.dat	SLOW-J ozone columns, by season and latitude, in Dobson Units

NOTE: For the most part, these files are obsolete, as the SLOW–J photolysis scheme has been deprecated.

4.1.23 The soil_NOx_200203/ subdirectories

climatprep2x25.dat climatprep4x5.dat	Monthly soil precipitation for soil NOx emissions (Wang et al, 1998)
fert_scale.dat	Fertilizer NOx emissions (Wang et al, 1998)
soiltype.dat	Mapping from Olson land type to soil land type (Wang et al, 1998)

4.1.24 The stratOH_200203/ subdirectories

stratOH.geos1.2x25 stratOH.geos1.4x5	Zonal mean stratospheric OH, taken from a 2-D stratospheric model (Schneider et al 2000), regridded to the GEOS–1 20 layer vertical grid. Used by schem.f to prevent tracers from building up in the stratosphere.
stratOH.geoss.2x25 stratOH.geoss.4x5	Zonal mean stratospheric OH, taken from a 2-D stratospheric model (Schneider et al 2000), regridded to the GEOS–STRAT 26 layer vertical grid. Used by schem.f to prevent tracers from building up in the stratosphere.
stratOH.geos3.2x25 stratOH.geos3.4x5	Zonal mean stratospheric OH, taken from a 2-D stratospheric model (Schneider et al 2000), regridded to the GEOS–3 48 layer vertical grid. Used by schem.f to prevent tracers from building up in the stratosphere.
stratOH.geos4.2x25 stratOH.geos4.4x5	Zonal mean stratospheric OH, taken from a 2-D stratospheric model (Schneider et al 2000), regridded to the GEOS–4 55 layer vertical grid. Used by schem.f to prevent tracers from building up in the stratosphere.

4.1.25 The stratjv_200203/ subdirectories

stratjv.geos1.2x25 stratjv.geos1.4x5	Zonal mean J-values (SLOW-J model output) for the GEOS–1 20 layer vertical grid. Used by schem.f to prevent certain tracers from building up in the stratosphere.
stratjv.geoss.2x25 stratjv.geoss.4x5	Zonal mean J-values (SLOW-J model output) for the GEOS–STRAT 26 layer vertical grid. Used by schem.f to prevent certain tracers from building up in the stratosphere.
stratjv.geos3.2x25 stratjv.geos3.4x5	Zonal mean J-values (SLOW-J model output) for the GEOS–3 48 layer vertical grid. Used by schem.f to prevent certain tracers from building up in the stratosphere.
stratjv.geos4.2x25 stratjv.geos4.4x5	Zonal mean J-values (SLOW-J model output) for the GEOS–3 55 layer vertical grid. Used by schem.f to prevent certain tracers from building up in the stratosphere.

4.1.26 The sulfate_sim_200210/ subdirectories

DMS_seawater.geos.2x25 DMS_seawater.geos.4x5	Binary punch files containing monthly average DMS seawater concentrations in nm/ML. From Andreae.
HNO3.geos1.2x25 HNO3.geoss.2x25 HNO3.geos3.2x25 HNO3.geos4.2x25 HNO3.geos1.4x5 HNO3.geoss.4x5 HNO3.geos3.4x5 HNO3.geos4.4x5	Binary punch files containing monthly averaged HNO3 concentrations [v/v], required for the offline sulfate simulation. These fields were archived from a GEOS–CHEM full chemistry simulation (GEOS–3, 4 x 5) and regridded to 2 x 2.5 and 4 x 5 grids.
JH2O2.geos1.2x25 JH2O2.geoss.2x25 JH2O2.geos3.2x25 JH2O2.geos4.2x25 JH2O2.geos1.4x5 JH2O2.geoss.4x5 JH2O2.geos3.4x5 JH2O2.geos4.4x5	Binary punch files containing monthly averaged J(H2O2) photolysis rates [1/s], required for the offline sulfate simulation. These fields were archived from a GEOS–CHEM full chemistry simulation (GEOS–3, 4 x 5) and regridded to 2 x 2.5 and 4 x 5 grids.
NH3_biofuel.geos.2x25 NH3_biofuel.geos.4x5	Binary punch files containing NH3 biofuel burning emissions in kg/month.
NO3.geos1.2x25 NO3.geoss.2x25 NO3.geos3.2x25 NO3.geos4.2x25 NO3.geos1.4x5 NO3.geoss.4x5 NO3.geos3.4x5 NO3.geos4.4x5	Binary punch files containing monthly averaged NO3 concentrations [v/v], required for the offline sulfate simulation. These fields were archived from a GEOS–CHEM full chemistry simulation (GEOS–3, 4 x 5) and regridded to 2 x 2.5 and 4 x 5 grids.
O3.geos1.2x25 O3.geoss.2x25 O3.geos3.2x25 O3.geos4.2x25 O3.geos1.4x5 O3.geoss.4x5 O3.geos3.4x5 O3.geos4.4x5	Binary punch files containing monthly averaged O3 concentrations [v/v], required for the offline sulfate simulation. These fields were archived from a GEOS–CHEM full chemistry simulation (GEOS–3, 4 x 5) and regridded to 2 x 2.5 and 4 x 5 grids.
PH2O2.geos1.2x25 PH2O2.geoss.2x25 PH2O2.geos3.2x25 PH2O2.geos4.2x25 PH2O2.geos1.4x5 PH2O2.geoss.4x5 PH2O2.geos3.4x5 PH2O2.geos4.4x5	Binary punch files containing monthly averaged P(H2O2) chemical production rates [molec/cm3/s], required for the offline sulfate simulation. These fields were archived from a GEOS–CHEM full chemistry simulation (GEOS–3, 4 x 5) and regridded to 2 x 2.5 and 4 x 5 grids.
SST.geos.2x25 SST.geos.4x5	Binary punch file containing monthly mean sea surface temperatures at 2 x 2.5 and 4 x 5 resolutions. From Mian Chin.
shipSOx.geos.2x25 shipSOx.geos.4x5	SO2 emissions from ship exhaust, from Corbett et al. The native resolution of the data is 2 x 2 degrees. This was regridded to the GEOS–CHEM 2 x 2.5 and 4 x 5 grids by Becky Alexander.
aircraft.2x2.5.s20.1992.apr.gz aircraft.2x2.5.s20.1992.aug.gz aircraft.2x2.5.s20.1992.dec.gz aircraft.2x2.5.s20.1992.feb.gz aircraft.2x2.5.s20.1992.jan.gz aircraft.2x2.5.s20.1992.jul.gz aircraft.2x2.5.s20.1992.jun.gz aircraft.2x2.5.s20.1992.mar.gz aircraft.2x2.5.s20.1992.may.gz aircraft.2x2.5.s20.1992.nov.gz aircraft.2x2.5.s20.1992.oct.gz aircraft.2x2.5.s20.1992.sep.gz	SO2 emissions from aircraft. These are fuel burned in [kg/box/day], from AEAP for 1992. SO2 emission is calculated by assuming an emission index EI of 1.0, i.e., 1g of SO2 emitted per kg of fuel burned. It is also assumed that there is no diurnal variation of emission rate. Used for the sulfate simulation (NSRCX==10). These are temporarily GNU zipped in order to save space.
kmc198.bin kmc223.bin kmc248.bin kmc273.bin kmc298.bin kmc323.bin	Binary files containing data used to initialize common blocks in isoropia_mod.f, which is used to compute aerosol thermodynamic equilibrium. In Code.v5-03-01, isoropia_mod.f has not been implemented yet, pending further testing. The module rpmares_mod.f contains the routines to compute thermodynamic equilibrium.
scalefoss.SOx.4x5.1998	Fossil fuel scale factors used to scale up GEIA SOx emissions from the baseline year 1985 to 1998. From Rokjin Park.
volcano.con.2x2.5	Non-eruptive volcanic SO2 emission from GEIA in [Mg SO2/box/day] at 2 x 2.5 resolution. Used for the sulfate simulation (NSRCX==10).
volcano.erup.1994.2x2.5	Non-eruptive volcanic SO2 emission from GEIA in [Mg SO2/box/day] at 2 x 2.5 resolution. Used for the sulfate simulation (NSRCX==10).

4.1.27 The TOMS_O3col_200202/ subdirectories

o3col.TOMS.1988.geos1.4x5 o3col.TOMS.1989.geos1.4x5 o3col.TOMS.1990.geos1.4x5 o3col.TOMS.1991.geos1.4x5 o3col.TOMS.1992.geos1.4x5 o3col.TOMS.1993.geos1.4x5 o3col.TOMS.1996.geos1.4x5 o3col.TOMS.1997.geos1.4x5 o3col.TOMS.1998.geos1.4x5 o3col.TOMS.1999.geos1.4x5

Ozone columns from TOMS for 1985-1999 (used for CO simulation w/ parameterized OH)

4.1.28 The tagged_CO_200106/ subdirectories

acetone.geos.4x5	Monthly mean emissions of direct biogenic acetone and acetone from grasslands, archived from a 1994 GEOS–CHEM model simulation
ch3oh.geos.4x5	Monthly mean rates of CO production from methanol (CH3OH), archived from a 4x5 GEOS–STRAT tagged CO simulation from 1996. This field is only utilized by the GEOS–3 tagged CO simulation.
isop96.geos.4x5	Monthly mean rates of CO production from isoprene (C5H8), archived from a 4x5 GEOS–STRAT tagged CO simulation from 1996. This field is only utilized by the GEOS–3 tagged CO simulation.
isop96.geos.4x5	Monthly mean rates of CO production from monterpenes, archived from a 4x5 GEOS–STRAT tagged CO simulation from 1996. This field is only utilized by the GEOS–3 tagged CO simulation.

4.1.29 The uvalbedo_200111/ subdirectories

uvalbedo.geos.2x25 uvalbedo.geos.4x5

Monthly mean UV albedoes for FAST-J photolysis (340 nm - 380 nm, from TOMS, cf. Herman & Celarier 1998)

4.1.30 The TOMS_200307/ subdirectories

4.1.31 Other files (mostly obsolete)

CH4_aseasonal.geos.4x5	Annual (aseasonal) emissions of CH4 from Fung et. al. 1991. CH4 sources include animals, landfills, natural gas venting, natural gas pipeline leakage, coal mining, termites, hydrates/clathrates in the Soviet arctic, hydrates/clathrates from 76oN - 84oN, and loss via soil absorption. Units are kg CH4/m2/year. Regridded from original 1 x 1 resolution to the GEOS–CHEM 4 x 5 grid.
CH4_monthly.geos.4x5	Monthly emissions of CH4 from Fung et. al. 1991. CH4 sources include rice paddies, wetlands, bogs, swamps, tundra, and biomass burning. Units are kg CH4/m2/month. Regridded from original 1 x 1 resolution to the GEOS–CHEM 4 x 5 grid.
O3.profiles.year	Monthly mean SAGE sonde data plus high latitude data from HALOE (used for CO w/ parameterized OH)
Srefl.table	Reflectivity table (used for CO w/ parameterized OH)
TOMSAI	TOMS Aerosol Indices for years 1985-1996, used to impose interannual variability on seasonal biomass burning emissions.
chemga.dat	Aerosol parameters for SMVGEAR
o3.aut	Autumn ozone columns (for CO w/ parameterized OH)
o3.spr	Spring ozone columns (for CO w/ parameterized OH)
o3.sum	Summer ozone columns (for CO w/ parameterized OH)
o3.win	Winter ozone columns (for CO w/ parameterized OH)