| Acronym | Meaning |
 | AWDL | Aviation Weather Development Laboratory |
| APEX | Acid Precipitation Experiment |
| GLWQA | Great Lakes Water Quality Agreement |
| PCDS | Pilot Climate Data System |
| APA | American Planning Association |
| ERL | Environmental Research Laboratory |
| FWS | Filter Wedge Spectrometer |
| HWCI | Hardware Configuration Item |
| ISMP | In-Situ Measurements Project |
| NMF | Normal Mode Functions |
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