Kevin Kroeger, Silvestrum Climate Associates LLC, Falmouth, Massachusetts, UNITED STATES, Stephen Crooks, Silvestrum Climate Associates, LLC, San Francisco, CA, United States, Aleck Zhaohui Wang, Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States, Qipei Shangguan, Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, United States, Stephen Romaniello, Vesta, PBC, San Francisco, United States, Brian Needelman, University of Maryland, Environmental Science and Technology, College Park, MD, United States, Igino Emmer, Silvestrum Climate Associates, LLC, Jisp, Netherlands and Patrick Megonigal, Smithsonian Environmental Research Center, Edgewater, United States