Modelling photochemistry in alpine valleys

Peer reviewe

Assessment of 2010 air quality in two Alpine valleys from modelling: Weather type and emission scenarios

Original article can be found at: http://www.sciencedirect.com/science/journal/13522310 Copyright Elsevier Ltd. DOI: 10.1016/j.atmosenv.2006.07.021Alpine valleys are sensitive to anthropogenic emissions. Local atmospheric dynamics are a key factor that may lead to an accumulation of pollutants in the bottom of the Chamonix and Maurienne valleys. Assessment of 2010 pollutant concentrations variability needs to take these specificities into account. A meteorological data classification is combined with different emission scenarios in order to run an air quality model. Using simulations of representative scenarios rather than complete years allows for a fine spatial and temporal representation of local atmospheric dynamics and gives access to detailed chemical breakdowns. Results demonstrate the variability of primary and secondary species due to emissions and the predominance of local effects on pollutant concentrations.Peer reviewe

Production of ozone in the Chamonix Valley (France)

Original article can be found at: https://www.inderscience.com/browse/index.php?journalID=9 Copyright Inderscience DOI: 10.1504/IJEP.2005.007394Peer reviewe

Dynamique des échanges de polluants à l’interface Sol-Air. Etudes en Laboratoire et sur Sites pollués

National audienc

Large chemical characterisation of PM10 emitted from graphite material production: Application in source apportionment

International audienceThis work focuses on emissions from industrial sources that are still poorly understood in Europe, especially the “carbon industry”. The study is based on two intensive sampling campaigns performed in a graphite material production plant for 2 weeks in July 2013 and November 2013 in alpine valleys. The chemical characterization of PM10 was conducted at three sampling sites (outdoor and indoor sites) located inside one industrial area, which is considered as the highest emissions source of polycyclic aromatic hydrocarbons (PAHs) in the Arve valley. The identification of specific tracers among metals and trace elements is commonly used to characterize industrial emissions. In our study, original enrichment factors relative to the “rural exposed background” have been calculated, and the metallic fraction was not affected by this industrial source. In contrast, the organic fraction of PM10 has a number of features, providing a complete organic source profile and referred to as the “carbon industry”. In particular, polycyclic aromatic sulfur heterocycles (PASH) have been largely detected from fugitive emissions with rather large concentrations. The average concentrations of benzo(b)naphtho(2,1-d)thiophene (BNT(2,1)) reached 2.35–6.56 ng·m− 3 and 60.5–376 ng·m− 3 for outdoor and indoor sites, respectively. The use of this reference profile in the chemical mass balance model (CMB) applied to samples collected in two sites near industrial areas shows that this source had an average contribution of 6% of the organic matter (OM) mass during the sampling period during the winter of 2013

Source apportionment in a complex environment using advanced Positive Matrix Factorization: advantages and limitations.

International audienc

Study of BC sources in a closed alpine valley in France : seasonal variations and specificities of biomass burning impacts

International audienc