| 1 (4) | National Oceanic and Atmospheric Administration | USA |  |
| 2 (14) | National Aeronautics and Space Administration * | USA | |
| 3 (29) | United States Geological Survey | USA | |
| 4 (59) | Jet Propulsion Laboratory | USA | |
| 5 (81) | Smithsonian Institution * | USA | |
| 6 (110) | US Naval Research Laboratory | USA | |
| 7 (127) | US Environmental Protection Agency | USA | |
| 8 (174) | NASA Goddard Space Flight Center | USA | |
| 9 (177) | University of Maryland, Center for Environmental Science | USA | |
| 10 (182) | United States Fish and Wildlife Service | USA | |
| 11 (187) | National Center for Atmospheric Research | USA | |
| 12 (211) | United States Department of Agriculture | USA | |
| 13 (264) | NASA Stennis Space Center | USA | |
| 14 (361) | Smithsonian National Museum of Natural History | USA | |
| 15 (371) | Smithsonian Environmental Research Center | USA | |
| 16 (428) | Pacific Northwest National Laboratory | USA | |
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