PTR-MS measurements in 2020-2021

This dataset presents the first two-years of long-term atmospheric measurements of Volatile Organic Compounds (VOCs) at the peri-urban SIRTA-ACTRIS site (Paris region). VOCs are involved in atmospheric chemistry, by modifying the oxidation capacity of the atmosphere, and acting as precursors of secondary pollutants (ozone, aerosols). Online measurements using a Proton-Transfer-Reaction Mass Spectrometer (PTR-MS) were implemented in January 2020. 5-min (2020) and 10-min (2021) measurements of 31 mass-to-charge ratios (m/z) were performed at 15 m above ground level. Raw data were treated to obtain volume mixing ratios (ppb), averaged to hourly resolution, and a thorough quality assessment was carried out on all m/z, of which 12 were further quality checked by ACTRIS. The measured m/z correspond to compounds including aromatics (benzene, toluene, …), oxygenated (methanol, acetone, …), and biogenic (isoprene, monoterpenes, …). The presentation and analysis of this dataset is available in a paper submitted to Earth System Science Data (Simon et al, in prep). reference article: Simon et al (in prep); Two years of Volatile Organic Compounds online in-situ measurements at SIRTA (Paris region, France) using Proton-Transfer-Reaction Mass Spectrometry; Earth System Science Data