AREA_SURROGATE_NUM: [default: 60]

Surrogate code of the area surrogate in the BGPRO file, to use for totals of biogenic emissions by state and county.

EXPLICIT_PLUMES_YN: [default: N]

Indicates whether only explicit plume rise sources should be merged.

USE_EXP_GEO_CODES: [default: N]

If set to Y, then use GEOCODE_LEVEL[1-4] files instead of the COSTCY file to define expanded geographical detail such as country-level(GEOCODE_LEVEL1), country/state-level (GEOCODE_LEVEL2), country/state/county-level (GEOCODE_LEVEL3) or country/state/county/tribal-level (GEOCODE_LEVEL4).

MRG_BYDAY: [default: blank]

String code that specifies which source categories (if any) are to use a by-day approach for the hourly input files (see “Description” section above for more information on this approach). Valid settings include A, M, P, or any combination. For example, set this environment variable to “AMP” to have Smkmerge read the area-, mobile-, and point-source hourly emissions files individually for each day.

MRG_CTLMAT_MULT: [default: blank]

String code that specifies which source categories (if any) are to be processed using a multiplicative control matrix. Valid settings include A, M, P, or any combination. For example, set this environment variable to “M” to have Smkmerge read the mobile-source multiplicative control matrix.

MRG_CTLMAT_REAC: [default: blank]

String code that specifies which source categories (if any) are to be processed using a reactivity control matrix. Valid settings include A, M, P, or any combination. For example, set this environment variable to “MP” to have Smkmerge read the mobile- and point-source reactivity control matrices.

MRG_GRDOUT_UNIT: [default: input file units]

String code that permits the user to change the units of the gridded output file. For example, “kg/hr” would convert the output emissions to kilograms per hour, before outputting the emissions data file. Not all conversions are known to SMOKE. Valid numerators are: “tons”, “kg”, “moles”, and “g”; note that molar emissions cannot be output without the mole-based speciation matrices. Valid denominators are “yr”, “dy”, “hr”, and “s”. Note that if annual output is requested but not available in the input file, leap year adjustments are not made.

Units required by CMAQ are moles/s and most other air quality models are moles/hr.

MRG_GRDOUT_YN: [default: N]

Defines whether the program produces a gridded output file.

MRG_LAYERS_YN: [default: N]

Defines whether the program uses the layer fractions file.

MRG_MARKETPEN_YN: [default: Y]

Defines whether the program uses market penetration from reactivity matrices.

MRG_METCHK_YN: [default: Y]

Defines whether the program checks consistency of headers in the meteorology file.

MRG_REPCNY_YN: [default: N]

Defines whether the program produces a report of emission totals by county.

MRG_REPCTL_YN: [default: N]

Defines whether the program reports controlled emissions or not.

MRG_REPSTA_YN: [default: N] Defines whether the program produces a report of emission totals by state.

MRG_SOURCE: [default: blank (processing halts)]

Series of character codes representing the type(s) of sources to be merged.

MRG_SPCMAT_YN: [default: N]

Defines whether the program produces speciated output.

MRG_TEMPORAL_YN: [default: N]

Defines whether the program produces temporally allocated output.

MRG_TOTOUT_UNIT: [default: input file units, or per day if hourly input is used]

This variable is like the MRG_GRDOUT_UNIT variable, except that it controls the state and county totals reports separately from the gridded outputs. The only difference is the temporal resolution of MRG_TOTOUT_UNIT, which always outputs the emission values as daily totals, no matter what units are used.

SMK_ASCIIELEV_YN: [default: N]

Defines whether the program produces an ASCII elevated point sources file, suitable for postprocessing with the Ptsrce program in EPS2.0/EPS2.5.

SMK_AVEDAY_YN: See description in Section 6.2.3.2, “Input Environment Variables”

NOTE: This setting affects the Smkmerge results only when hourly emissions are not merged. To use hourly average-day emissions in Smkmerge, this variable must be set to Y for the Temporal program, so that average-day emissions will be used in creating the hourly emissions.

SMK_EMLAYS: See description in Section 6.6.3.2, “Input Environment Variables”

Used to set the default value for UAM_LAYERS when the Smkmerge output is to be used in UAM-V elevated-point-source output processing.

SMK_PING_METHOD: See description in Section 6.3.3.2, “Input Environment Variables”

Creates CMAQ PinG file or flags PinG sources in UAM-style elevated ASCII file (when the SMK_ASCIIELEV_YN environment variable is set to Y).

SMK_REPORT_TIME: [default: 230000]

Time for writing daily reports from program (HHMMSS).

SMK_SRCGROUP_OUTPUT_YN: [default: N]

Indicates if source apportionment emissions should be output

SMKMERGE_CUSTOM_OUTPUT: [default: N]

Defines his/her own output file names from Smkmerge. Manually define environment variables for those output file names below:

UAM_LAYERS: [default: set by value of SMK_EMLAYS]

Number of layers to output to the elevated-point-source file.

UAM_NOTE: [default: “UAM elev pt emis from Smkmerge”]

Message to appear as a note in the elevated-point-source file.

UAM_NPARAM: [default: 20]

Number of parameters for control packet to appear in the elevated-point-source file.

UAM_PRINT_LOCATIONS: [default: 0]

Flag printed in the elevated-point-source file to control whether Ptsrce will print the locations table. 0=No; 1=Yes.

UAM_PRINT_METHODS: [default: 0]

Flag printed in the elevated-point-source file to control whether Ptsrce will print the methods table. 0=No; 1=Yes.

UAM_PRINT_OUTGRD: [default: 0]

Flag printed in the elevated-point-source file to control whether Ptsrce will print the output grid. 0=No; 1=Yes.

UAM_PRINT_UNITS: [default: 0]

Flag printed in the elevated-point-source file to control whether Ptsrce will print the units table. 0=No; 1=Yes.

UAM_PRINT_VALUES: [default: 0]

Flag printed in the elevated-point-source file to control whether Ptsrce will print the values table. 0=No; 1=Yes.

UAM_PRINT_VERTMETH: [default: 0]

Flag printed in the elevated-point-source file to control whether Ptsrce will print the vertical methods table. 0=No; 1=Yes.

UAM_PTSRCE_OUTUNIT: [default: 20]

Ptsrce output file unit number in the elevated-point-source file.

UAM_VERTICAL_METHOD: [default: STACKHGT]

Vertical method in the elevated-point-source file. Appropriate values are STACKHGT and PLUMERISE.

UAM4_DIFFBREAK_UNIT: [default: 0]

DIFFBREAK file unit number in the elevated-point-source file.

UAM4_HTLOWR: [default: 20]

Minimum height (in meters) of cells between the surface and the “diffbreak” in the elevated-point-source file.

UAM4_HTSFC: [default: 0]

Height of the surface layer (in meters) in the elevated-point-source file.

UAM4_HTUPPR: [default: 100]

Minimum height (in meters) of cells between the “diffbreak” and the top of the model in the elevated-point-source file.

UAM4_LAYABOVE: [default: UAM_LAYERS - UAM4_LAYBELOW]

Number of layers above the “diffbreak” in the elevated-point-source file.

UAM4_LAYBELOW: [default: 3]

Number of layers below the “diffbreak” in the elevated-point-source file.

UAM4_METSCALARS_UNIT: [default: 15]

METSCALARS file unit number in the elevated-point-source file. Used only for UAM_VERTICAL_METHOD set to “PLUMERISE”.

UAM4_REGIONTOP_UNIT: [default: 0]

REGIONTOP file unit number in the elevated-point-source file.

UAM4_TEMPERATUR_UNIT: [default: 14]

TEMPERATUR file unit number in the elevated-point-source file. Used only for UAM_VERTICAL_METHOD set to “PLUMERISE”.

UAM4_WIND_UNIT: [default: 16]

WIND file unit number in the elevated-point-source file. Used only for UAM_VERTICAL_METHOD set to “PLUMERISE”.