| Acronym | Meaning |
| HEOS | Highly Eccentric Orbit Satellite |
| IMEP | International Meteorological Educational Program |
| MEGAN | Model Of The Exchange Of Gases Between The Atmosphere And Nature |
| SWARS | Supplementary Aviation Weather Reporting Station |
| IMP | Interplanetary Monitoring Platform |
| APACM | Atmospheric Physical And Chemical Monitor |
| CDSF | Customer Data Service Facility |
| BAC | Boeing Airplane Company |
| W-Z RELATIONSHIP | W = Precipitation Content |
| ELI | Environmental Law Institute |