| 1 (5) | United States Department of Agriculture | USA |  |
| 2 (10) | University of Maryland, College Park * | USA |  |
| 3 (11) | National Aeronautics and Space Administration * | USA | |
| 4 (19) | University of South Florida System * | USA | |
| 5 (25) | NASA Goddard Space Flight Center | USA | |
| 6 (28) | Jet Propulsion Laboratory | USA | |
| 7 (31) | University of Illinois at Urbana-Champaign * | USA | |
| 8 (32) | United States Geological Survey | USA | |
| 9 (33) | California Institute of Technology * | USA | |
| 10 (36) | University of Nebraska, Lincoln | USA | |
| 11 (48) | Cornell University * | USA | |
| 12 (52) | Boston University * | USA | |
| 13 (53) | University of Wisconsin, Madison * | USA | |
| 14 (54) | Ohio State University, Columbus * | USA | |
| 15 (57) | University of California, Davis * | USA | |
| 16 (59) | Texas A&M University, College Station * | USA | |
| 17 (60) | State University of New York, College of Environmental Science and Forestry | USA | |
| 18 (61) | Iowa State University | USA | |
| 19 (65) | Stanford University * | USA | |
| 20 (76) | Lawrence Berkeley National Laboratory * | USA | |
| 21 (86) | South Dakota State University | USA | |
| 22 (87) | University of California, Berkeley * | USA | |
| 23 (101) | University of Hawaii, Manoa * | USA | |
| 24 (108) | University of Missouri, Columbia * | USA | |
| 25 (110) | University of Florida * | USA | |
| 26 (116) | Colorado State University, Fort Collins * | USA | |
| 27 (118) | Michigan State University | USA | |
| 28 (121) | University of Minnesota, Twin Cities * | USA | |
| 29 (125) | University of New Hampshire | USA | |
| 30 (135) | Texas Tech University | USA | |
| 31 (137) | University of California, Santa Barbara | USA | |
| 32 (138) | University of Arizona * | USA | |
| 33 (152) | North Carolina State University | USA | |
| 34 (158) | University of Connecticut, Storrs * | USA | |
| 35 (161) | University of California, Los Angeles * | USA | |
| 36 (162) | National Oceanic and Atmospheric Administration | USA | |
| 37 (190) | Pennsylvania State University * | USA | |
| 38 (195) | University of Idaho | USA | |
| 39 (202) | Princeton University | USA | |
| 40 (206) | Utah State University * | USA | |
| 41 (211) | Washington State University, Pullman * | USA | |
| 42 (213) | Central Michigan University | USA | |
| 43 (217) | Purdue University | USA | |
| 44 (223) | University of Washington * | USA | |
| 45 (225) | University of Michigan, Ann Arbor * | USA | |
| 46 (227) | University of California, Merced | USA | |
| 47 (229) | University of Georgia | USA | |
| 48 (232) | University of Texas, Austin | USA | |
| 49 (234) | Northern Arizona University | USA | |
| 50 (238) | Oregon State University | USA | |
| 51 (263) | Kansas State University | USA | |
| 52 (274) | Pacific Northwest National Laboratory * | USA | |
| 53 (288) | Louisiana State University, Baton Rouge | USA | |
| 54 (308) | University of California, Riverside | USA | |
| 55 (317) | University of Massachusetts, Amherst | USA | |
| 56 (321) | Rutgers, The State University of New Jersey | USA | |
| 57 (327) | Montana State University, Bozeman | USA | |
| 58 (357) | Virginia Polytechnic Institute and State University * | USA | |
| 59 (359) | Arizona State University * | USA | |
| 60 (362) | University of Colorado, Boulder * | USA | |
| 61 (373) | Oak Ridge National Laboratory | USA | |
| 62 (401) | University of Tennessee, Knoxville * | USA | |
| 63 (413) | University of California, Irvine * | USA | |
| 64 (453) | Oklahoma State University, Stillwater * | USA | |
| 65 (456) | University of California, San Diego * | USA | |
| 66 (476) | Auburn University | USA | |
| 67 (483) | University of Delaware | USA | |
| 68 (484) | Clemson University | USA | |
| 69 (488) | City University of New York * | USA | |
| 70 (489) | University of Arkansas, Fayetteville | USA | |
| 71 (499) | Florida State University * | USA | |
| 72 (502) | North Dakota State University | USA | |
| 73 (525) | University of Kentucky * | USA | |
| 74 (542) | University of Alaska, Fairbanks | USA | |
| 75 (543) | New Mexico State University | USA | |
| 76 (549) | University of Virginia * | USA | |
| 77 (589) | Mississippi State University | USA | |
| 78 (626) | University of Kansas * | USA | |
| 79 (636) | West Virginia University * | USA | |
| 80 (717) | Tennessee State University | USA | |
| 81 (730) | Southern Illinois University, Carbondale * | USA | |
| 82 (737) | University of New Mexico * | USA | |
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