|
Code |
Description |
|
°C |
degrees Celsius |
|
µg |
microgram (10-6 g) |
|
µm |
micron or micrometer (10-6 m) |
|
ABL |
Atmospheric Boundary Layer |
|
AGL |
Above Ground Level |
|
CFR |
Code of Federal Regulations |
|
CO |
carbon monoxide |
|
CO2 |
carbon dioxide |
|
DRI |
Desert Research Institute |
|
EDAS |
Eta Data Assimilation System |
|
EPA |
Environmental Protection Agency |
|
ESRI |
Environmental Systems Research Institute |
|
GIS |
Geographic Information System |
|
GOES |
Geostationary Operational Environmental Satellite |
|
GPS |
Global Positioning System |
|
HYSPLIT |
HYbrid Single-Particle Lagrangian Integrated Trajectory model |
|
IMPROVE |
Interagency Monitoring of PROtected Visual Environments |
|
km |
kilometer (103 m) |
|
m |
meter |
|
m3 |
cubic meter |
|
mb |
millibar |
|
mm |
millimeter |
|
Mm-1 |
inverse megameter (1/1,000,000 meter); a measure of light extinction |
|
m/s |
meter per second |
|
MODIS |
MODerate Imaging Spectroradiometer |
|
MSL |
Mean Sea Level |
|
NAAQS |
National Ambient Air Quality Standards |
|
NASA |
National Aeronautics and Space Administration |
|
NEI |
National Emission Inventory |
|
NH3 |
ammonia |
|
NH4+ |
ammonium ion |
|
NH4HSO4 |
ammonium bisulfate |
|
NH4NO3 |
ammonium nitrate |
|
(NH4)2SO4 |
ammonium sulfate |
|
nm |
nanometer (10-9 m) |
|
NO2 |
nitrogen dioxide |
|
NO3– |
nitrate ion |
|
NOX |
nitrogen oxides |
|
NPS |
National Park Service |
|
NSR |
New Source Review |
|
NWS |
National Weather Service |
|
O3 |
Ozone |
|
PM |
suspended Particulate Matter with no regard to size of particles |
|
PM10 |
suspended Particulate Matter with aerodynamic diameters less than 10
microns (µm) |
|
PM2.5 |
suspended Particulate Matter with aerodynamic diameters less than 2.5
microns (µm) |
|
ppb or ppbv |
parts per billion volume |
|
pH |
potential of Hydrogen |
|
ppm or ppmv |
parts per million volume |
|
PSD |
Prevention of Significant Deterioration |
|
RH |
Relative Humidity |
|
SIP |
State Implementation Plan |
|
SLAMS |
State/Local Air Monitoring Stations |
|
SO2 |
sulfur dioxide |
|
SO4= |
sulfate ion |
|
TEOM® |
Tapered Element Oscillating Microbalance |
|
TPY |
Tons Per Year |
|
TSP |
Total Suspended Particulate matter |
|
U.S. EPA |
United States Environmental Protection Agency |
|
USDA |
United States Department of Agriculture |
|
USGS |
United States Geological Service |
|
UTC |
Coordinated Universal Time or sometimes called Zulu time or Greenwich
Mean Time |
|
UTM |
Universal Transverse Mercator |
|
VOC |
Volatile Organic Compounds |
