By default, SMOKE is setup to use the country, state, and county codes based on a U.S. view. The codes assume a 3-tier system of codes as described in Section 2.3.4, “Country, state, and county codes”. The three tiers allow specification of regions as follows:
One digit for country code
Two digits for state codes
Three digits for county codes
All codes provided in the emission inventories must be integers and must match entries in the COSTCY or GEOCODE_LEVEL4 (if USE_EXP_GEOCODE Y) file, which is the master list of country, state, county and tribal codes in any given SMOKE installation.
The format for the COSTCY file can be found in Chapter 8, SMOKE Input Files. By default, the codes are shared by all scenarios installed in the same SMOKE system (using different COSTCY or GEOCODE_LEVEL[1-4] (if USE_EXP_GEOCODE Y) files requires changing the Assigns file to not share the same COSTCY or GEOCODE_LEVEL[1-4] (if USE_EXP_GEOCODE Y) file among all cases).
The codes in the inventory must match the codes in this file. SMOKE assigns time zones, daylight saving time exemptions, state
names, and county names using this file. Therefore, if one of the counties in the inventory does not match a valid country,
state, and county code in the COSTCY or GEOCODE_LEVEL[1-4] file (if USE_EXP_GEOCODE Y), it can cause errors in the modeling.
The following list provides the steps that users should take to ensure that the file will work for their modeling case:
Check whether the countries with data in the inventory are included in the /COUNTRY/ section of the COSTCY or GEOCODE_LEVEL[1-4] (if USE_EXP_GEOCODE Y) file.
Change country codes and names if necessary within the limitation of 10 countries per file. If the country codes change, the
country-specific SMOKE temporal profile assignments made by ATREF, MTREF, and PTREF may no longer be valid.
Check whether the states with data in the inventory are included in the /STATE/ section of the COSTCY or GEOCODE_LEVEL[1-4] file (if USE_EXP_GEOCODE Y) file.
Change or add state codes and names if necessary to ensure all states are listed for all countries.
Check whether the counties with data in the inventory are included in the /COUNTY/ section of the COSTCY or GEOCODE_LEVEL[1-4] file (if USE_EXP_GEOCODE Y) file and that all counties have assigned time zones.
Smkinven will perform this function for you if needed and will list in the Smkinven log file all counties that are not included in the COSTCY or GEOCODE_LEVEL[1-4] file (if USE_EXP_GEOCODE Y) file or that do not have time zones assigned. If county codes have changed for merged or separated
counties (e.g., Miami/Dade county in Florida).
Change or add county codes and names if necessary to ensure all counties are included in the inventory for all states and countries and that time zones have been assigned to each.