Daniel Feldman, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Leah Gibson, Lawrence Berkeley National Laboratory, Denver, CO, United States, Felix Yu, University of Michigan Ann Arbor, Ann Arbor, United States; University of California-Berkekely, Berkeley, United States, Marianne Cowherd, University of California Berkeley, Environmental Science, Policy, and Management, Berkeley, United States, William J Rudisill, Lawrence Berkeley National Laboratory, Berkeley, United States, Erica R Siirila-Woodburn, Lawrence Berkeley National Laboratory, Earth and Environmental Sciences Area, Berkeley, United States, Allison C Aiken, Los Alamos National Laboratory, Earth and Environmental Science Division, Los Alamos, United States, Laura Riihimaki, Cooperative Institute for Research in Environmental Sciences, NOAA Global Monitoring Laboratory, Boulder, United States and Hagen Telg, NOAA, ESRL Global Monitoring Division, Boulder, CO, United States