| Acronym | Meaning |
| IGU | International Geographical Union |
| LT | Local Time |
| IUPAP | International Union Of Pure And Applied Physics |
| ADEPT | Alexandria Digital Earth Prototype |
| NAC | NCAR Administrators Committee |
| UNOLS | University-National Oceanographic Laboratory System |
| AKP | Atmospheric Kinetics Project |
| FERMILAB | FERMI National Acceleration Laboratory |
| POP | Probability Of Precipitation |
| ADDE | Abstract Distributed Data Environment |