[1] Johns Hopkins Univ, Baltimore, MD 21218 USA
[2] Columbia Univ, New York, NY USA
[3] Univ Calif Davis, Davis, CA 95616 USA
[4] Univ Tasmania, Hobart, Tas, Australia
[5] Univ Michigan, Ann Arbor, MI 48109 USA
[6] Univ Illinois, Chicago, IL USA
[7] Univ Rhode Isl, Kingston, RI 02881 USA
[8] Purdue Univ, W Lafayette, IN 47907 USA
[9] Univ Calif Los Angeles, Los Angeles, CA 90024 USA
[10] US Geol Survey, Box 25046, Denver, CO 80225 USA
[11] Australian Natl Univ, Canberra, ACT, Australia
[12] Brown Univ, Providence, RI 02912 USA
[13] Northwestern Univ, Evanston, IL USA
[14] GFZ German Res Ctr Geosci, Potsdam, Germany
[15] Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA
[16] Univ Calif Irvine, Irvine, CA 92717 USA
[17] Boston Univ, Boston, MA 02215 USA
[18] Iowa State Univ, Ames, IA USA
[19] Univ Nacl Colombia, Bogota, Colombia
[20] Univ Hawaii Manoa, Honolulu, HI 96822 USA
[21] Univ Calif San Diego, La Jolla, CA 92093 USA
[22] Univ Sci & Technol China, Hefei, Peoples R China
[23] Univ Washington, Seattle, WA 98195 USA
[24] Univ Arizona, Tucson, AZ 85721 USA
[25] Beijing Normal Univ, Beijing, Peoples R China
[26] Univ Calgary, Calgary, AB, Canada