| Acronym | Meaning |
| GREM | Geopotential Research Explorer Mission |
| DLPDU | Data Link Protocol Data Unit |
| VHRR | Very High Resolution Radiometer |
| DPH | Dew-point Hygrometer |
| ISLSCP | International Satellite Land-Surface Climatology Project |
| AL | Analytical Laboratory |
| ITU | International Telecommunications Union |
| ACWA | American Clean Water Association |
| DD | Dated |
| RASTER | (Remote) ASTER |