Observations of Oxygenated Volatile Organic Compounds during the Long Island Sound Tropospheric Ozone Study (LISTOS)

As part of the LISTOS (Long Island Sound Tropospheric Ozone Study) campaign, we measured the presence of oxygenated volatile organic compounds (OVOCs) at Flax Pond Laboratory, located on the north shore of Long Island, during the summer of 2018. We deployed Stony Brook's High Resolution Proton Transfer Time of Flight Mass Spectrometer (HR-PTRTOFMS) to the Flax Pond site beginning June 1. We were able to identify species from both biogenic and anthropogenic sources during normal 'background' atmospheric conditions as well as during air pollution events. Multiple air pollution days were experienced during the month of July with observed ozone levels in excess of 100 ppb in the region, and with a reported maximum of more than 120 ppb. Here we will present and discuss the species composition and concentrations during different types of atmospheric conditions, and the potential role of these compounds in the production of tropospheric ozone.