Synergistic Ozone Lidar Observations During Summer 2023 New York Regional Air Quality Campaigns

Ozone variations in urban coastal regions, such as New York City (NYC), exhibit a high degree of complexity due to the interplay of various factors. These factors include emissions, meteorological conditions like sea breezes and the urban heat island effect, as well as intricate chemical reactions. To understand how these factors interact to influence tropospheric ozone concentrations, in summer 2023, a series field campaigns were conducted by multiple agencies at NYC region and adjacent downwind areas, including Synergistic TEMPO Air Quality Science (STAQS) led by NASA, Atmospheric Emissions and Reactions Observed from Megacities to Marine Areas (AEROMMA) and Coastal Urban Plume Dynamics Study (CUPiDS) led by NOAA. As part of the Tropospheric Ozone Lidar Network (TOLNet), the City College of New York (CCNY) operates two ozone lidars during the 2023 summer campaign. One of the ozone lidars is stationed at CCNY's Optical Remote Sensing Lab in Manhattan. The other newly constructed ozone lidar has been integrated on a mobile trailer, and located at Columbia University's Lamont-Doherty Earth Observatory (LDEO), Palisades NY. This study will focus on the observations of the two ozone lidars during the high ozone episodes and ozone transport events. Additionally, the results will be put in the context of observations from other TOLNet sites in the region. The study will also showcase coordinated observations from aerosol lidars, wind lidars, ceilometers, and ground samplers, aiming to investigate the impacts of sea breezes and urban plume transport on tropospheric ozone in the NYC region.