| Acronym | Meaning |
 | IATO | Independent Acceptance Test Organization |
| ALDEN | Alden Electronics |
| RNG | Renormalization Group |
| GMD | Geometric Mean Diameter |
| NGO | Non-Government Organizations |
| NOAA | National Oceanic And Atmospheric Administration |
| MGA | Meteorological And Geoastrophysical Abstracts |
| ESSC | Earth System Science Committee |
| AVCS | Advanced Vidicon Camera Service |
| RITS | Radiatively Important Trace Substances |
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