Exploiting stagnant conditions to derive robust emission ratio estimates for CO2, CO and volatile organic compounds in Paris

被引：21

作者：

Ammoura, Lamia ^{[1
]}

Xueref-Remy, Irene ^{[1
]}

Vogel, Felix ^{[1
]}

Gros, Valerie ^{[1
]}

Baudic, Alexia ^{[1
]}

Bonsang, Bernard ^{[1
]}

Delmotte, Marc ^{[1
]}

Te, Yao ^{[2
]}

Chevallier, Frederic ^{[1
]}

机构：

[1] UVSQ, UMR 8212, CNRS, LSCE,Unite Mixte CEA, F-91191 Gif Sur Yvette, France

[2] UPMC, UMR 8112, CNRS, LERMA,Unite Mixte,ENS,OP,UCP, F-75005 Paris, France

来源：

ATMOSPHERIC CHEMISTRY AND PHYSICS | 2016年 / 16卷 / 24期

关键词：

FOSSIL-FUEL CO2; GAS EMISSIONS; SWITZERLAND; (CO2)-C-14; TRACERS; TUNNEL; SITE;

D O I：

10.5194/acp-16-15653-2016

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 CO2, 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 Delta CO / Delta CO2 ratio in Paris is shown, with a difference of around 60% between the extreme values and a strong anti-correlation (r(2) = 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.

引用

页码：15653 / 15664

页数：12

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