Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO 80523 United States
National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 United States;
Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, MD 20688 United States;
Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, MD 20688 United States;
Bren School of Environmental Science and Management and Institute for Computational Earth System Science, University of California, Santa Barbara, Santa Barbara, CA 93106 United States;