Continuing global monitoring of anthropogenic and volcanic SO2 sources from Aura/OMI to SNPP/OMPS

Can Li, UMD ESSIC, College Park, MD, United States, Nickolay Anatoly Krotkov, Code 614, Greenbelt, MD, United States, Simon A Carn, Michigan Technological University, Houghton, MI, United States, Joanna Joiner, NASA GSFC, Greenbelt, MD, United States, Chris A McLinden, Environment Canada Toronto, Toronto, ON, Canada and Vitali Fioletov, Meteorological Ser Canada ARQX, Downsview, ON, Canada