Olivier Sanchez

TL;DR: In this paper, the seasonal variability of atmospheric VOCs being monitored in the French megacity and their various associated emission sources was investigated using a multivariate mathematical receptor modeling, and the reconstructed VOC sources were cross validated using independent tracers such as inorganic gases (NO, NO2, CO), black carbon (BC) and meteorological data (temperature).

TL;DR: In this article, the volatility-basis-set approach (VBS) is implemented into this model, taking into account the volatility of primary organic aerosol (POA) and the chemical aging of semi-volatile organic species.

TL;DR: In this article, a comparative study was performed between this time-resolved dataset and the outputs of a chemistry transport model (CHIMERE), showing a relatively good capability of the model to reproduce the time-limited intense maxima observed in the field for PM2.5 and ion species.

TL;DR: In this paper, the first urban background measurements of both inorganic aerosol compounds and their gaseous precursors during several months within the city of Paris were presented, showing that NH3 episodes are observed in spring/summer while HNO3 concentrations remain relatively low, even during summer.

TL;DR: Interestingly, a rural site to the east of London, Harwell, showed similar contributions of isoprene to the total NMHC reactivity, which may indicate the need for measurements of other biogenic species, such as monoterpenes, in some areas to reliably capture the importance of biogenics in the region.