This website documents the efforts of the OMI Sulfur Dioxide Group, based in
the Joint Center for Earth Systems Technology at the University of Maryland Baltimore
County (UMBC), at the Michigan Technological University, and at NASA Goddard Space Flight Center, to detect, track and measure volcanic eruptions and degassing and anthropogenic pollution from space. Our group primarily uses UV satellite data
from the Ozone Monitoring Instrument (OMI) on NASA's EOS-Aura satellite
and the Total Ozone Mapping Spectrometer (TOMS) to map and quantify sulfur dioxide gas (SO2) emitted by
volcanoes. We also use the UV instruments to map volcanic ash and aerosol emissions, using an "Aerosol Index".