EPA scientists are collaborating on a multi-agency field study from June to September 2018 to investigate the complex interaction of emissions, chemistry and meteorological factors contributing to elevated ozone levels along the Long Island Sound shorelines, including parts of Connecticut, Rhode Island, New Jersey and New York. The Long Island Sound Tropospheric Ozone Study (LISTOS) includes researchers from state and federal agencies and academia, with combined expertise in aircraft, satellite and ground-based measurements.

• Long Island Sound Tropospheric Ozone Study (LISTOS) Fact Sheet (PDF)(2 pp, 100 K)