A development of ozone abatement strategies for the Grenoble area using modeling and indicators

Couach, O.; Kirchner, F.; Jiménez, Rodrigo; Balin, I.; Perego, S.; Bergh, Hubert van den

doi:10.1016/j.atmosenv.2003.12.001

Cited by 21 publications

(8 citation statements)

References 12 publications

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“…Only meshes of the terrain with an altitude less than 1500 m above sea level are considered in order to include all the anthropogenic sources. According to the results, the ozone production is VOC limited: only a diminution of VOC leads to a reduction of ozone concentration (run V).This conclusion differs from what was observed in the nearby city of Grenoble (100 km from the valley in a Y shape convergence of three deep valleys) where a NO x controlled regime was observed (Couach et al, 2004). Measurements of ozone between 1998 and 2001 in the town of Chamonix agree with this result with a 5 ppb increase of ozone concentration in summer.…”

Section: Photochemical Indicators To Distinguish Ozone Production Regimecontrasting

confidence: 54%

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Modelling photochemistry in alpine valleys

et al. 2005

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Abstract. Road traffic is a serious problem in the Chamonix Valley, France: traffic, noise and above all air pollution worry the inhabitants. The big fire in the Mont-Blanc tunnel made it possible, in the framework of the POVA project (POllution in Alpine Valleys), to undertake measurement campaigns with and without heavy-vehicle traffic through the Chamonix and Maurienne valleys, towards Italy (before and after the tunnel re-opening). Modelling is one of the aspects of POVA and should make it possible to explain the processes leading to episodes of atmospheric pollution, both in summer and in winter. Atmospheric prediction model ARPS 4.5.2 (Advanced Regional Prediction System), developed at the CAPS (Center for Analysis and Prediction of Storms) of the University of Oklahoma, enables to resolve the dynamics above a complex terrain. This model is coupled to the TAPOM 1.5.2 atmospheric chemistry (Transport and Air POllution Model) code developed at the Air and Soil Pollution Laboratory of the Ecole Polytechnique Fédérale de Lausanne. The numerical codes MM5 and CHIMERE are used to compute large scale boundary forcing. This paper focuses on modelling Chamonix valley using 300-m grid cells to calculate the dynamics and the reactive chemistry which makes possible to accurately represent the dynamics in the Chamonix valley (slope and valley winds) and to process chemistry at fine scale. The summer 2003 intensive campaign was used to validate the model and to study chemistry. NO y according to O 3 reduction demonstrates a VOC controlled regime, different from the NO x controlled regime expected and observed in the nearby city of Grenoble.

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Section: Photochemical Indicators To Distinguish Ozone Production Regimecontrasting

confidence: 54%

“…These results can be compared to the same correlations in Grenoble during a high ozone episode with R 2 =0.64 for urban station and R 2 =0.42 for suburban stations (Couach et al, 2004).…”

Section: Validationmentioning

confidence: 99%

Modelling photochemistry in alpine valleys

et al. 2005

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“…[17] The OPE x is an important indicator to evaluate O 3 -NO x -VOCs sensitivity and to make effective O 3 control strategies in urban areas [Couach et al, 2004;Rickard et al, 2002;Shiu et al, 2007;Sillman, 1999;Xu et al, 2009;Zaveri et al, 2003]. The OPE x can be derived from the regression slopes of correlations between O x and NO z [Kleinman et al, 1994;Trainer et al, 1993].…”

Section: Ozone Production Efficiency (Ope X )mentioning

confidence: 99%

Nitrogen dioxide measurement by cavity attenuated phase shift spectroscopy (CAPS) and implications in ozone production efficiency and nitrate formation in Beijing, China

Sun

Liu

et al. 2013

JGR Atmospheres

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Nitrogen dioxide (NO2) is a key species in studying photochemical smog and formation mechanisms of nitrate in fine particles. However, the conventional commercially available chemiluminescence (CL)‐based method often has uncertainties in measuring NO2 because of interferences with other reactive nitrogen species. In this study, an Aerodyne Cavity Attenuated Phase Shift Spectroscopy (CAPS) NO2 monitor that essentially has no interferences with nitrogen containing species was deployed in Beijing for the first time during August 2012. The CAPS NO2 monitor is highly sensitive with a detection limit (3σ) of 46.6 ppt for 1 min integration. The NO2 measured by CAPS shows overall agreement with that from CL, yet large differences up to 20% were also observed in the afternoon. Further, the discrepancies of NO2 measurements between CAPS and CL appear to be NOz dependent with larger differences at higher NOz concentrations (e.g., > 14 ppb). As a result, the ozone production efficiency of NOx (OPEx) derived from the correlations of Ox‐NOz with the CL NO2 can be overestimated by 19–37% in Beijing. The daily OPEx calculated with the CAPS NO2 ranges from 1.0 to 6.8 ppb/ppb with an average (±1σ) of 2.6 (±1.3) for the entire study. The relatively low OPEx and the relationship between OPEx and NOx suggest that ozone production chemistry is VOC sensitive during summer in Beijing. Two case studies further show that high concentrations of NOx can significantly enhance the formation of nitrate in fine particles in the presence of high O3 and favorable meteorological conditions.

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“…where f and r are the mean values and σ f and σ r are the standard deviations of f and r, respectively. These results can be compared to the same correlations in Grenoble during a high ozone episode with R 2 =0.64 for urban station and R 2 =0.42 for suburban stations (Couach et al, 2004).…”

Section: High-resolution Meteorological Simulation: Comparison With Smentioning

confidence: 83%

Modelling photochemistry in alpine valleys

Brulfert¹,

Chemel²,

Chaxel³

et al. 2005

Preprint

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Abstract. Road traffic is a serious problem in the Chamonix Valley, France: traffic, noise and above all air pollution worry the inhabitants. The big fire in the Mont-Blanc tunnel made it possible, in the framework of the POVA project (POllution in Alpine Valleys), to undertake measurement campaigns with and without heavy-vehicle traffic through the valley, towards Italy (before and after the tunnel re-opening). Modelling in POVA should make it possible to explain the processes leading to episodes of atmospheric pollution, both in summer and in winter. Atmospheric prediction model ARPS 4.5.2 (Advanced Regional Prediction System), developed at the CAPS (Center for Analysis and Prediction of Storms) of the University of Oklahoma, enables to resolve the dynamics above a complex terrain. This model is coupled to the TAPOM 1.5.2 atmospheric chemistry (Transport and Air POllution Model) code developed at the Air and Soil Pollution Laboratory of the Ecole Polytechnique Fédérale de Lausanne. The numerical codes MM5 and CHIMERE are used to compute large scale boundary forcing. Using 300-m grid cells to calculate the dynamics and the reactive chemistry makes possible to accurately represent the dynamics in the valley (slope and valley winds) and to process chemistry at fine scale. Validation of campaign days allows to study chemistry indicators in the valley. NOy according to O3 reduction demonstrates a VOC controlled regime, different from the NOx controlled regime expected and observed in the nearby city of Grenoble.

show abstract

A development of ozone abatement strategies for the Grenoble area using modeling and indicators

Cited by 21 publications

References 12 publications

Modelling photochemistry in alpine valleys

Modelling photochemistry in alpine valleys

Nitrogen dioxide measurement by cavity attenuated phase shift spectroscopy (CAPS) and implications in ozone production efficiency and nitrate formation in Beijing, China

Modelling photochemistry in alpine valleys

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