Exploiting stagnant conditions to derive robust emission ratio estimates for CO2, CO and volatile organic compounds in Paris
Item
Title (Dublin Core)
Exploiting stagnant conditions to derive robust emission ratio estimates for CO2, CO and volatile organic compounds in Paris
Description (Dublin Core)
We propose an approach to estimate urban emission ratios that takes advantage of the enhanced local urban signal in the atmosphere at low wind speed. We apply it to estimate monthly ratios between CO<sub>2</sub>, CO and some VOCs from several atmospheric concentration measurement datasets acquired in the centre of Paris between 2010 and 2014. We find that this approach is not very sensitive to the regional background level definition and that, in the case of Paris, it samples all days (weekdays and weekends) and all hours of the day evenly. A large seasonal variability of the ΔCO ∕ ΔCO<sub>2</sub> ratio in Paris is shown, with a difference of around 60 % between the extreme values and a strong anti-correlation (<i>r</i><sup>2</sup> = 0.75) with atmospheric temperature. The comparison of the ratios obtained for two short measurement campaigns conducted in two different districts and two different periods (autumn and winter) shows differences ranging from −120 to +63 %. A comparison with a highly resolved regional emission inventory suggests some spatial variations of the ratio within the city.
Creator (Dublin Core)
Ammoura, Lamia
Xueref-Remy, Irène
Vogel, Felix
Gros, Valérie
Baudic, Alexia
Bonsang, Bernard
Delmotte, Marc
Té, Yao
Chevallier, Frédéric
Date (Dublin Core)
2018-09-09
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-16-15653-2016
https://acp.copernicus.org/articles/16/15653/2016/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
