| Acronym | Meaning |
 | LTER | Long-Term Ecological Research Program |
| HIRS | High Infrared Radiometer (or Radiation) Sounder |
| TOPSE | Tropospheric Ozone Production About The Spring Equinox |
| UHF | Ultra-high Frequency |
| IRD | Interface Requirements Document |
| PBL | Planetary Boundary Layer |
| NTISS | National Telecommunications And Information Systems Security |
| SOLSTICE | Solar/Stellar Irradiance Comparison Experiment |
| EMR | Electronic Mail Registration |
| METAPPS | Meteorological Applications Task Force |
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