| AMS |
area and mobile source |
| AQM |
air quality model |
| ATP |
antitampering program |
| BEIS3 |
Biogenic Emission Inventory System, version 3 |
| BEIS4 |
Biogenic Emission Inventory System, version 4 |
| BELD4 |
Biogenic Emission Landcover Database, version 4 |
| BELD5 |
Biogenic Emission Landcover Database, version 5 |
| BELD6 |
Biogenic Emission Landcover Database, version 6 |
| BRK |
particulate matter from brake component wear |
| CAA |
Clean Air Act |
| CAMX |
Comprehensive Air Quality Model, with Extensions |
| CB6 |
Carbon Bond 6 |
| CEI |
crankcase extended idle exhaust |
| CEP |
Carolina Environmental Program |
| CEM |
Continuous Emissions Monitoring |
| CHIEF |
Clearinghouse for Inventories and Emission Factors |
| CMAQ |
Community Multiscale Air Quality |
| CMAS |
Community Modeling and Analysis System |
| CO |
carbon monoxide |
| CRC |
evaporative crankcase emissions (blow-by) |
| CTG |
control technology guideline |
| CXS |
crankcase start exhaust |
| DDDYYYY |
date in Julian format (3-digit day plus 4-digit year) |
| DNL |
evaporative diurnal emissions (heat rise) |
| EDSS |
Environment Decision Support System |
| EFL |
evaporative fuel leaks |
| EFV |
evaporative fuel vapor venting |
| EGU |
electric generating utility |
| EMC |
Environmental Modeling Center |
| EMS-95 |
Emissions Modeling System, ‘95 |
| EPA |
U.S. Environmental Protection Agency |
| EPM |
Evaporative Permeation |
| EPS |
Emissions Processor System |
| EXR |
exhaust running emissions |
| EXS |
exhaust engine start emissions (trip start) |
| EXT |
extended idle exhaust |
| FF10 |
Flat File 10 |
| FIA |
Forest Inventory Area |
| FIPS |
U.S. Federal Implementation Planning Standards |
| GIS |
geographic information system |
| GMT |
Greenwich Mean Time |
| GUI |
graphical user interface |
| HAP |
hazardous air pollutant |
| HHMMSS |
hours (2 digits), minutes (2 digits), seconds (2 digits); other forms are HHHMMSS and HHHHMMSS, which differ only in the number
of digits in the hours position
|
| HPC |
high-performance computing |
| HOT |
evaporative hot soak emissions (trip end) |
| IDA |
Inventory Data Analyzer |
| I/M |
inspection and maintenance |
| I/O |
input/output |
| I/O API |
Input/Output Applications Programming Interface |
| lat-lon |
latitude-longitude |
| LMOS |
Lake Michigan Ozone Study |
| MACT |
Maximum Achievable Control Technology |
| MCIP |
Meteorology-Chemistry Interface Processor |
| MCPL |
Meteorology Coupler |
| MIMS |
Multimedia Integrated Modeling System |
| MM5 |
Pennsylvania State University/National Center for Atmospheric Research fifth-generation Mesoscale Model |
| MPS |
major point source |
| MEPSE |
major elevated point-source emissions (same as PinG) |
| MMDDYYYY |
date in Gregorian format (2-digit month plus 2-digit day plus 4-digit year) |
| MOVES |
Motor Vehicle Emission Simulator |
| MWSS |
Monday-weekday-Saturday-Sunday |
| NAICS |
North American Industrial Classification System |
| NC DENR |
North Carolina Department of Environment and Natural Resources |
| NEI |
National Emissions Inventory |
| NetCDF |
Network Common Data Form |
| NH3 |
ammonia |
| NonEGU |
Non-electric generating utility |
| NOx |
nitrogen oxides |
| NTI |
National Toxics Inventory |
| OAQPS |
Office of Air Quality Planning and Standards |
| ORD |
Office of Research and Development |
| ORIS |
Office of Regulatory Information Systems |
| ORL |
one record per line |
| OTAG |
Ozone Transport and Assessment Group |
| PAR |
photosynthetic active radiation |
| PAH |
polynuclear aromatic hydrocarbons |
| PinG |
plume in grid (same as MEPSE) |
| PM |
particulate matter |
| PM10 |
particulate matter 10 micrometers or smaller in diameter |
| PM2.5 |
particulate matter 2.5 micrometers or smaller in diameter |
| PMC |
particulate matter coarse |
| QA |
quality assurance |
| RACT |
reasonably available control technology |
| RADM |
Regional Acid Deposition Model |
| RFG |
reformulated gas |
| RFL |
evaporative refueling emissions (fuel displacement and spillage) |
| RH |
Relative Humidity |
| RMC |
Regional Modeling Center |
| RPD |
Rate Per Distance |
| RPP |
Rate Per Profile |
| RPV |
Rate Per Vehicle |
| RST |
evaporative running loss emissions |
| SAPRC |
Statewide Air Pollution Research Center |
| SCC |
Source Classification Code |
| SIC |
Standard Industrial Classification |
| SIP |
State Implementation Plan |
| SMOKE |
Sparse Matrix Operator Kernel Emissions |
| SPEED |
Average Hourly Speed Inventory Data |
| SO2 |
sulfur dioxide |
| TIR |
particulate matter from tire wear |
| TOG |
total organic gases |
| UAM-AERO |
Urban Airshed Model, Aerosols |
| UAM-IV |
Urban Airshed Model, version IV |
| UAM-V |
Urban Airshed Model, Variable grid |
| UNC |
University of North Carolina |
| UTM |
Universal Transverse Mercator |
| VERDI |
Visualization Environment for Rich Data Interpretation |
| VMT |
vehicle miles traveled |
| VOC |
volatile organic compounds |
| VPOP |
Vehicle Population |