| 1 (2) | National Aeronautics and Space Administration * | USA | |
| 2 (4) | National Oceanic and Atmospheric Administration | USA | |
| 3 (10) | NASA Goddard Space Flight Center | USA | |
| 4 (12) | National Center for Atmospheric Research | USA | |
| 5 (37) | NASA Langley Research Center | USA | |
| 6 (42) | Jet Propulsion Laboratory | USA | |
| 7 (56) | Environment Canada | CAN | |
| 8 (73) | US Environmental Protection Agency | USA | |
| 9 (89) | NASA Ames Research Center | USA | |
| 10 (90) | United States Department of Agriculture | USA | |
| 11 (95) | Pacific Northwest National Laboratory | USA | |
| 12 (117) | United States Geological Survey | USA | |
| 13 (145) | Lawrence Berkeley National Laboratory * | USA | |
| 14 (161) | NASA Marshall Space Flight Center | USA | |
| 15 (166) | Oak Ridge National Laboratory | USA | |
| 16 (180) | U.S. Department of Energy * | USA | |
| 17 (274) | NASA Goddard Institute for Space Studies | USA | |
| 18 (292) | Brookhaven National Laboratory * | USA | |
| 19 (318) | Smithsonian Institution * | USA | |
| 20 (368) | US Naval Research Laboratory | USA | |
| 21 (370) | Argonne National Laboratory | USA | |
| 22 (395) | Natural Resources Canada | CAN | |
| 23 (468) | Los Alamos National Laboratory * | USA | |
| 24 (491) | Lawrence Livermore National Laboratory * | USA | |
| 25 (538) | National Research Council Canada * | CAN | |
| 26 (575) | Harvard-Smithsonian Center for Astrophysics | USA | |
| 27 (592) | U.S. Air Force | USA | |
| 28 (624) | U.S. Army * | USA | |
| 29 (679) | Agriculture and Agri-Food Canada | CAN | |
| 30 (868) | Bedford Institute of Oceanography | CAN | |
|