| 1 (7) | National Oceanic and Atmospheric Administration | USA |  |
| 2 (14) | United States Geological Survey | USA | |
| 3 (37) | National Aeronautics and Space Administration * | USA | |
| 4 (52) | United States Department of Agriculture | USA | |
| 5 (100) | NASA Goddard Space Flight Center | USA | |
| 6 (101) | Jet Propulsion Laboratory | USA | |
| 7 (154) | US Environmental Protection Agency | USA | |
| 8 (187) | Environment Canada | CAN | |
| 9 (278) | Smithsonian Institution * | USA | |
| 10 (323) | Lawrence Berkeley National Laboratory * | USA | |
| 11 (336) | University of Maryland, Center for Environmental Science | USA | |
| 12 (433) | United States Fish and Wildlife Service | USA | |
| 13 (547) | Oak Ridge National Laboratory | USA | |
| 14 (557) | U.S. Army * | USA | |
| 15 (586) | Smithsonian Environmental Research Center | USA | |
| 16 (596) | Bedford Institute of Oceanography | CAN | |
| 17 (786) | Pacific Northwest National Laboratory | USA | |
| 18 (820) | Smithsonian National Museum of Natural History | USA | |
| 19 (1047) | American Museum of Natural History | USA | |
| 20 (1066) | Field Museum Natural History | USA | |
| 21 (1080) | Natural Resources Canada | CAN | |
|
