| Acronym | Meaning |
| ECSA | Early Career Scientists Assembly |
| MM4 | Mesoscale Model |
| HAPEX | Hydrological Atmospheric Pilot Experiment |
| EXPRESSO | EXPeriment For REgional Sources And Sinks Of Oxidants |
| Z-R | Relationship |
| ASEP | Accident Sequence Evaluation Program |
| AAP | Affirmative Action Program |
| ESSL | Earth & Sun Systems Laboratory (formerly ATD) |
| EAD | Energy And Air Division (EPA |
| PI/TL | Principal Investigator/Team Leader |