| 1 (2) | National Aeronautics and Space Administration * | USA |  |
| 2 (3) | National Oceanic and Atmospheric Administration | USA | |
| 3 (13) | National Center for Atmospheric Research | USA | |
| 4 (18) | NASA Goddard Space Flight Center | USA | |
| 5 (28) | Jet Propulsion Laboratory | USA | |
| 6 (45) | United States Department of Agriculture | USA | |
| 7 (47) | National Institute of Standards and Technology * | USA | |
| 8 (55) | US Environmental Protection Agency | USA | |
| 9 (78) | United States Geological Survey | USA | |
| 10 (96) | Lawrence Berkeley National Laboratory * | USA | |
| 11 (98) | Pacific Northwest National Laboratory | USA | |
| 12 (102) | Smithsonian Institution * | USA | |
| 13 (125) | NASA Langley Research Center | USA | |
| 14 (141) | National Renewable Energy Laboratory | USA | |
| 15 (157) | U.S. Department of Energy * | USA | |
| 16 (180) | NASA Goddard Institute for Space Studies | USA | |
| 17 (215) | Brookhaven National Laboratory * | USA | |
| 18 (234) | Oak Ridge National Laboratory | USA | |
| 19 (245) | US Naval Research Laboratory | USA | |
| 20 (270) | Harvard-Smithsonian Center for Astrophysics | USA | |
| 21 (275) | Argonne National Laboratory | USA | |
| 22 (278) | U.S. Army * | USA | |
| 23 (294) | NASA Ames Research Center | USA | |
| 24 (296) | Los Alamos National Laboratory * | USA | |
| 25 (320) | Bay Area Environmental Research Institute | USA | |
| 26 (338) | Lawrence Livermore National Laboratory * | USA | |
| 27 (358) | NASA Stennis Space Center | USA | |
| 28 (379) | U.S. Air Force | USA | |
| 29 (380) | University of Maryland, Center for Environmental Science | USA | |
| 30 (381) | NASA Marshall Space Flight Center | USA | |
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