| Acronym | Meaning |
| ESTSC | Energy Science And Technology Software Center |
| TOPS | Transcendental Operating System |
| HIRS | High Infrared Radiometer (or Radiation) Sounder |
| TSM | Theoretical Studies And Modeling |
| N-SCAT | NASA Scatterometer |
| DMI | Danish Meteorological Institute |
| VAD | Velocity-azimuth Display |
| KRMS | Ka-band Radiometer Mapping System |
| MARC | Machine Readable Cataloging |
| URSI | International Union Of Radio Science |