| Acronym | Meaning |
| PM2.5 | Particulate Matter With Mass Median Aerodynamic Diameter Less Than 2.5 Micrometers |
| PRECIP | Processing Of Emissions By Clouds And Precipitation |
| ELSCAM | Electra Scalar Measurements |
| AA | Accountable/activity Area |
| SSEC | Space Science And Engineering Center |
| CCR | Climate Change Research |
| SESQUINET | N/A |
| LLR | Lunar Laser Ranging |
| GAPS | Billions (109) Of Actions Per Second |
| ACDWG | Atmospheric Center Of Data Working Group |