| Abbreviation | Definition |
|---|---|
| RFO | Rocky Flats Office |
| RFP | Request For Payment |
| RFP | Request For Proposal |
| RGC | Radar Ground Clutter |
| RIDGE | Radar Integrated Display with Geospatial Elements |
| RISCO | Rapid Ice Sheet Change Observatory |
| RMC | Regional Meteorological Centre |
| RMDCN | Regional Meteorological Data Communication Network |
| RMTN | Regional Telecommunications Network |
| RND | Research and Development |
| ROB | Radar OBservation |
| ROC | Radar Operations Center |
| RP | Ratio Procedure |
| RPG | Radar Product Generator |
| RR | Rainfall Runoff |
| RR | Red Rain |
| RRB | Radar Reflective Balloon |
| RRL | Rhizobium Research Laboratory |
| RSJ | Reinforced Steel Joist |
| RSM | RHESsys (Regional Hydro-Ecological Simulation System) Snow Model |