Institute for the Study of Planet Earth, University of Arizona, Tucson, AZ 85721, United States ; School of Natural Resources, 325 Biological Sciences East University of Arizona, Tucson, AZ 85721, United States
Four Corners Institute, 1477 1/2 Canyon Road, Santa Fe, NM 87501, United States
Laboratory of Tree-Ring Research, 105 West Stadium University of Arizona, Tucson, AZ 85721, United States