| Acronym | Meaning |
| TIAA | Teachers Insurance And Annuity Association |
| FIRS | Fourier Transform Infrared Sounder |
| PA | Position Angle |
| MADIS | Meteorological Assimilation Data Ingest System |
| TGCM | Thermospheric General Circulation Model |
| DPMI | DOS Protected Mode Interface |
| ACL | Alternative Concentration Level/limit |
| RPM | Revolutions Per Minute |
| UNICOS | Unix Cray Operating System |
| FOOTPRINT | Measuring And Modeling The Surface Footprint Of Scalar Fluxes |