| Acronym | Meaning |
| ENSO | El Ni?o/Southern Oscillation |
| HIMSS | HIgh-resolution Microwave Spectrometer Sounder |
| SSEC | Space Science And Engineering Center |
| PIFTS | Planetary Imaging Fourier Transform Spectrometer |
| HST | Hubble Space Telescope |
| GLOBE | Global Learning And Observations To Benefit The Environment |
| NCAR | National Center For Atmospheric Research |
| LASER | Light Amplification By Stimulated Emission Of Radiation |
| ACRIM | Active Cavity Radiometer Irradiance Monitor (EOS) |
| AC | Alternating Current |