Trace gas measurements of local and long-range transport of anthropogenic emissions made during the CAMP2Ex sampling campaign in the Maritime Continent

The maritime continent provides complex inter-continental transport and processing of anthropogenic emissions from sources within the continent and from the neighboring East Asian countries. In order to evaluate the various sources, chemical transformation, and local and long-range transport of anthropogenic emissions, trace gas measurements were made across the island of Luzon, Philippines and the bodies of water surrounding the island. Measurements of NO, NO_x, NO_y, SO₂, CO and O₃ were made aboard NASA's P-3 between Aug. 24 to Oct. 5, 2019 during the Cloud, Aerosol, and Monsoon Processes Philippines Experiment (CAMP²Ex) field campaign. Additional calculation of NO₂, NO_z and oxidant (O_x; O₃ + NO₂) data were included. The dataset provides the most current understanding of the photochemical O₃ production and pollutant processing over these open waters. This study provides both an overview of trace gas measurements during the CAMP²Ex campaign and targeted analysis of sampled air masses impacted by urban, industrial and other point source emissions. HYSPLIT back trajectories and 3-D chemical transport modeling were included during these periods of interest to identify air mass transport, potential sources of these anthropogenic emissions, and dynamical and chemical processes leading to high ozone.