| Acronym | Meaning |
 | SIR | Shuttle Imaging Radar |
| ACOS | Advanced Coronal Observing System |
| HDGEC | Human Dimension Of Global Environment Change |
| APS | American Physical Society |
| ACE-1 | Aerosol Characterization Experiment |
| SAWRS | Supplementary Aviation Weather Reporting System |
| NCAR | N/A |
| TOPSE | Tropospheric Ozone Production About The Spring Equinox |
| APA | American Planning Association |
| EMI | Electomagnetic Interference |
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