Increasing eolian dust deposition in the western United States linked to human activity

Geological Sciences Department, University of Colorado at Boulder, CB399, Boulder, Colorado 80309, USA Environmental Studies Program, CB397, University of Colorado at Boulder, Boulder, Colorado 80309, USA Cooperative Institute for Research in the Environmental Sciences (CIRES), CB 399, 80309, USA Department of Earth and Atmospheric Science, Snee Hall, Cornell University, Ithaca, New York 14853, USA Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, Colorado 80304, USA Department of Geosciences, The University of Arizona, 1040 E 4th St, Tucson, Arizona 85721, USA Center for Snow and Avalanche Studies, PO Box 190, Silverton, Colorado 81443, USA Institute for the Study of Planet Earth, The University of Arizona, 715 N. Park Ave, 2nd Floor, Tucson, Arizona 85721, USA The Department of Atmospheric Sciences, The University of Arizona, 1118 E 4th St, Tucson, Arizona 85721, USA Department of Geography, 260 S. Central Campus Dr, University of Utah, 84112, USA Earth Surface Processes Team, US Geological Survey, MS980, Denver Federal Center, Denver, Colorado 80225, USA *e-mail: [email protected]