Speciation of anthropogenic VOC emis- sions from observations in contrasted urban environments: a basis for emission inventory evaluation and the definition of CMIP (Coupled Model Intercomparison Project) historical emission inventory
Résumé
Here, we propose to make an assessment of the spatial and temporal variability of the composition of nMVOC anthropogenic emissions from recent and decadal observations in urban areas in order to define more accurate and representative nMVOC emission sources profiles. The main objectives are: the establishment of NMVOC emission sources profiles from in-situ observations or by near field measurements,the analysis of seasonal and interannual variability of nMVOC emissions composition, and the evaluation of the anthropogenic emission inventories.this work is based on the most recent results of several long-term (air quality networks) and intensive measurement campaigns (MeGapOli – paris, 2009, Calnex,) in post-industrialized regions (northern mid- latitude cities) and in the eastern Mediterranean Basin within the transeMeD initiative. according to the aCCMip and rCps inventories, the total anthropogenic emissions of nMVOCs in the Mea region were constantly increasing reaching ~15 tg in 2010 whereas in Usa and europe, the nMVOCs emissions were decreasing reaching ~10 tg in 2010 (eCCaD database). a very detailed and unique multipollutant database was generated in a city of the Middle east, Beirut, with a focus on the organic carbon, and in istanbul. since, the current nMVOC speciation applied in models needs updating, source profiles were determined with field measurements close to the main potential emitters (salameh et al. 2014).