| Acronym | Meaning |
 | CASP | Canadian Atlantic Storms Project (or Program) |
| OSTPC | Open Systems Transition Planning Committee |
| ITOS | Improved Tiros Operational Satellite |
| PM2.5 | Particulate Matter With Mass Median Aerodynamic Diameter Less Than 2.5 Micrometers |
| IGBP | International Geosphere-Biosphere Program |
| FERC | Federal Energy Regulatory Commission |
| DSAP | DOE Special Analysis Project |
| ESSC | Earth System Science Committee |
| IAGA | International Association Of Geomagnetism And Aeronomy |
| CCTM | Community Chemistry Transport Model |
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