Sensitivity of total column NO2 at a marine site within the Chesapeake Bay during OWLETS-2

In coastal environments like the Chesapeake Bay, presence of sea/bay breeze circulation can contribute to poor air quality and makes modeling meteorological chemical impacts in forecast models a challenge. The Ozone Water-Land Environmental Transition Study 2 field campaign aimed better quantify mechanisms affecting surface, profile, columnar trace gas amounts between land water. Using HYSPLIT back trajectory modeling, variability Pandora NO2 surface O3 was quantified. Clustered trajectories showed that westerly north-northwesterly winds resulted highest MDA8 ozone values over study domain. An analysis multiday event, demonstrated how TROPOMI capture spatial observed by network, including accumulation Bay. VOC measurements during event were analyzed sources precursors, such as coal fire power plant, identified. Further investigation data at HMI revealed significant maintained Bay night. combination lidar, Pandora, situ NO2, wind lidar measurements, lofted plume detected Additionally, same suite observations found differences horizontal vertical extent on exceedance day event. Surface gases (NO2 O3) vary significantly from remote sensing (Pandora, TROPOMI, O3lidar), highlighting need for sensitive columnar, complex urban, marine future geostationary validation.