| Acronym | Meaning |
 | ERT | Environmental Research And Technology |
| GLA | Goddard Laboratory Of The Atmospheres |
| DNS | Domain Name Service |
| ETL | Energy Technology Programs |
| RSF | Remote Sensing Facility |
| ISSS | International Society Of Soil Science |
| E | Epsilon |
| PEM | Pacific Exploratory Mission |
| IRD | Interface Requirements Document |
| ESS | Earth System Science |
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