干旱区生态环境知识资源中心(Arid): Transport of aerosols over the French Riviera - link between ground-based lidar and spaceborne observations

Arid

DOI	10.5194/acp-19-3885-2019
	Transport of aerosols over the French Riviera - link between ground-based lidar and spaceborne observations
	Chazette, Patrick 1; Totems, Julien 1; Shang, Xiaoxia 1,2
通讯作者	Chazette, Patrick
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
EISSN	1680-7324
出版年	2019
卷号	19 期号:6 页码:3885-3904
英文摘要	For the first time, a 355 nm backscatter N-2-Raman lidar has been deployed on the western part of the French Riviera to investigate the vertical aerosol structure in the troposphere. This lidar system, based at the AERONET site of Toulon-La Garde, performed continuous measurements from 24 June to 17 July 2014, within the framework of the multidisciplinary program Mediterranean Integrated Studies at the Regional and Local Scales (MISTRALS). By coupling these observations with those of the spaceborne instruments Cloud-Aerosol LIdar with Orthogonal Polarization (CALIOP), Spinning Enhanced Visible and InfraRed Imager (SEVIRI), and Moderate Resolution Imaging Spectroradiometers (MODIS), the spatial extents of the aerosol structures are investigated. The origins of the aerosol plumes are determined using back trajectories computed by the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT). This synergy allowed us to highlight plumes of particulate pollutants moving in the low and medium free troposphere (up to similar to 5 km above the mean sea level) towards the French Riviera. This pollution originates from the Spanish coast, more particularly from Costa Blanca (including Murcia) and Costa Brava-Costa Daurada (including Barcelona). It is mainly due to traffic, but also to petrochemical activities in these two regions. Desert aerosol plumes were also sampled by the lidar. The sources of desert aerosols have been identified as the Grand Erg Occidental and Grand Erg Oriental. During desert dust events, we highlight significant differences in the optical characteristics in terms of the backscatter-to-extinction ratio (BER, inverse of the lidar ratio) between the planetary boundary layer, with 0.024 sr(-1) (similar to 42 sr), and the free troposphere, with 0.031 sr(-1) (similar to 32 sr). These differences are greatly reduced in the case of pollution aerosol plume transport in the free troposphere (i.e., 0.021 and 0.025 sr(-1)). Transported pollution aerosols appear to have similar BER to what is emitted locally. Moreover, using the correlation matrix between lidar aerosol extinction profiles as a function of altitude, we find that during transport events in the low free troposphere, aerosols may be transferred into the planetary boundary layer. We also note that the relative humidity, which is generally higher in the planetary boundary layer (> 80 %), is found to have no significant effect on the BER.
类型	Article
语种	英语
国家	France ; Finland
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000462537000001
WOS关键词	OPTICAL-PROPERTIES ; ORGANIC AEROSOLS ; SAHARAN DUST ; IMPACT ; FRAMEWORK ; PARIS ; AREA ; ASSIMILATION ; VARIABILITY ; BACKSCATTER
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214468
作者单位	1.CEA CNRS UVSQ, UMR 8212, LSCE, Gif Sur Yvette, France; 2.Finnish Meteorol Inst, POB 1627, Kuopio 70211, Finland
推荐引用方式 GB/T 7714	Chazette, Patrick,Totems, Julien,Shang, Xiaoxia. Transport of aerosols over the French Riviera - link between ground-based lidar and spaceborne observations[J],2019,19(6):3885-3904.
APA	Chazette, Patrick,Totems, Julien,&Shang, Xiaoxia.(2019).Transport of aerosols over the French Riviera - link between ground-based lidar and spaceborne observations.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(6),3885-3904.
MLA	Chazette, Patrick,et al."Transport of aerosols over the French Riviera - link between ground-based lidar and spaceborne observations".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.6(2019):3885-3904.