Ozone Lidar Observations during the Long Island Sound Tropospheric Ozone Study

The Long Island Sound Tropospheric Study (LISTOS) is a field campaign that occurred during summer 2018 that incorporated a wide range of in-situ and remote sensors at ground-based sites, on aircraft, and other mobile vehicles with the goal to further understand the complex interactions that lead to enhanced ozone in the New York City (NYC) metropolitan area. Despite air quality improvements nationwide, the high population in this area is exposed to air quality exceedances year-to-year. Emissions from NYC and the surrounding area are thought at times to transport over Long Island Sound, where the relatively cool waters reduce boundary layer height concentrating pollutants that can circulate back over land with the afternoon sea breeze. During the campaign, measurements of ozone vertical distribution were provided by two Tropospheric Ozone Lidar Network (TOLNet) lidars: the NASA Goddard Tropospheric Ozone Differential Absorption Lidar (TROPOZ) was situated at Rutgers University in northern New Jersey southwest of NYC, while a second system, the Langley Mobile Ozone Lidar (LMOL), was located at the Westport Connecticut Air Quality station, along the coast of Connecticut northeast of NYC. As a result, a unique view of ozone vertical distribution has been obtained during LISTOS that can be used to better understand ozone surface enhancements, and provide guidance to regional state-level regulatory agencies. In this presentation a summary of ozone lidar measurements and data examples will be presented to illustrate various events captured during the campaign along with complimentary observations in light of LISTOS objectives.