GSTDTAP  > 地球科学
DOI10.5194/acp-19-785-2019
Impact of wildfires on particulate matter in the Euro-Mediterranean in 2007: sensitivity to some parameterizations of emissions in air quality models
Majdi, Marwa1,2; Turquety, Solene2; Sartelet, Karine1; Legorgeu, Carole1; Menut, Laurent2; Kim, Youngseob1
2019-01-22
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2019
卷号19期号:2页码:785-812
文章类型Article
语种英语
国家France
英文摘要

This study examines the uncertainties on air quality modeling associated with the integration of wildfire emissions in chemistry-transport models (CTMs). To do so, aerosol concentrations during the summer of 2007, which was marked by severe fire episodes in the EuroMediterranean region especially in the Balkans (20-31 July, 24-30 August 2007) and Greece (24-30 August 2007), are analyzed. Through comparisons to observations from surface networks and satellite remote sensing, we evaluate the abilities of two CTMs, Polyphemus/Polair3D and CHIMERE, to simulate the impact of fires on the regional particulate matter (PM) concentrations and optical properties. During the two main fire events, fire emissions may contribute up to 90% of surface PM2.5 concentrations in the fire regions (Balkans and Greece), with a significant regional impact associated with long-range transport. Good general performances of the models and a clear improvement of PM2.5 and aerosol optical depth (AOD) are shown when fires are taken into account in the models with high correlation coefficients.


Two sources of uncertainties are specifically analyzed in terms of surface PM2.5 concentrations and AOD using sensitivity simulations: secondary organic aerosol (SOA) formation from intermediate and semi-volatile organic compounds (I/S-VOCs) and emissions' injection heights. The analysis highlights that surface PM2.5 concentrations are highly sensitive to injection heights (with a sensitivity that can be as high as 50% compared to the sensitivity to I/S-VOC emissions which is lower than 30 %). However, AOD which is vertically integrated is less sensitive to the injection heights (mostly below 20 %) but highly sensitive to I/S-VOC emissions (with sensitivity that can be as high as 40 %). The maximum statistical dispersion, which quantifies uncertainties related to fire emission modeling, is up to 75% for PM2.5 in the Balkans and Greece, and varies between 36% and 45% for AOD above fire regions.


The simulated number of daily exceedance of World Health Organization (WHO) recommendations for PM2.5 over the considered region reaches 30 days in regions affected by fires and similar to 10 days in fire plumes, which is slightly underestimated compared to available observations. The maximum statistical dispersion (sigma) on this indicator is also large (with sigma reaching 15 days), showing the need for better understanding of the transport and evolution of fire plumes in addition to fire emissions.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000456317400003
WOS关键词AEROSOL OPTICAL DEPTH ; SECONDARY ORGANIC AEROSOL ; BASIS-SET APPROACH ; AGRICULTURAL FIRES ; COMPOUND EMISSIONS ; BIOGENIC EMISSIONS ; INJECTION HEIGHTS ; TRANSPORT MODEL ; TECHNICAL NOTE ; FOREST-FIRES
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/30588
专题地球科学
作者单位1.Univ Paris Est, CEREA Joint Lab Ecole Ponts ParisTech EdF R&D, F-77455 Champs Sur Marne, France;
2.Sorbonne Univ, CNRS UMR 8539, Ecole Polytech, LMD,IPSL, Paris, France
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Majdi, Marwa,Turquety, Solene,Sartelet, Karine,et al. Impact of wildfires on particulate matter in the Euro-Mediterranean in 2007: sensitivity to some parameterizations of emissions in air quality models[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(2):785-812.
APA Majdi, Marwa,Turquety, Solene,Sartelet, Karine,Legorgeu, Carole,Menut, Laurent,&Kim, Youngseob.(2019).Impact of wildfires on particulate matter in the Euro-Mediterranean in 2007: sensitivity to some parameterizations of emissions in air quality models.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(2),785-812.
MLA Majdi, Marwa,et al."Impact of wildfires on particulate matter in the Euro-Mediterranean in 2007: sensitivity to some parameterizations of emissions in air quality models".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.2(2019):785-812.
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