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| RADARSAT-1 Satellite Document | ATBDs | 87.6 KB |
| RADARSAT-1 Standard Beam SAR Images | ATBDs | 201.94 KB |
| Radiostratigraphy and Age Structure of the Greenland Ice Sheet, Version 1 User Guide | User Guide | 376.89 KB |
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| Rand Corporation Mean Monthly Global Snow Depth Version 1 User Guide | User Guide | 243.51 KB |
| Randolph Glacier Inventory, Version 7 User Guide (GLIMS.org) | User Guide | |
| Readme: NASA Cloud Absorption Radiometer (CAR) Data | General Resources | 506.73 KB |
| Reconstructed North American Snow Extent, 1900-1993, Version 1 User Guide | User Guide | 55.22 KB |
| Reconstructed North American, Eurasian, and Northern Hemisphere Snow Cover Extent, 1915-1997, Version 1 User Guide | User Guide | 166.55 KB |
| Reconstructing Seasonal Antarctic Sea Ice Extent during the 20th Century | General Resources | 1.24 MB |
| Recurring Spring Leads and Landfast Ice in the Beaufort and Chukchi Seas, 1993-2004, Version 1 User Guide | User Guide | 1.72 MB |
| Regional variability of Arctic sea ice seasonal change climate indicators from a passive microwave climate data record | General Resources | |
| Report of the 6th Session of the Steering Group for the GDSIDB and the Informal Session of the SGSI | General Resources | 146.38 KB |
| Retracted Data File List for ATL03/04/06/07/08/09/10/12/13, last updated 7 December 2020 | General Resources | 47.85 KB |
| RGI Technical Report Version 3.2 | General Resources | 1.37 MB |
| RGI Technical Report Version 4.0 | General Resources | 2.62 MB |
| RGI Technical Report Version 5.0 | General Resources | 2.8 MB |
| RGI Technical Report Version 6.0 | General Resources | 2.76 MB |
| Rock glacier inventory, Hautes Alpes Calcaires, Switzerland, Version 1 User Guide | User Guide | 34.67 KB |