DOI: 10.1016/j.atmosenv.2017.09.055
Scopus记录号: 2-s2.0-85030707680
论文题名: Atmospheric aerosol variability above the Paris Area during the 2015 heat wave - Comparison with the 2003 and 2006 heat waves
作者: Chazette P ; , Totems J ; , Shang X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 170 起始页码: 216
结束页码: 233
语种: 英语
英文关键词: Aerosol origins
; Air quality
; Heat wave
; N2-Raman lidar
; Radiative forcing
Scopus关键词: Aerosols
; Air quality
; Atmospheric aerosols
; Atmospheric radiation
; Budget control
; Climatology
; Optical properties
; Optical radar
; Particles (particulate matter)
; Trajectories
; Aerosol optical thickness
; Aerosol origins
; Aerosol radiative forcing
; Heat waves
; Radiative forcings
; Raman LIDAR
; Single scattering albedo
; Spaceborne observations
; Air pollution
; AERONET
; aerosol
; air mass
; air quality
; atmospheric plume
; CALIOP
; concentration (composition)
; heat wave
; MODIS
; particulate matter
; radiative forcing
; trajectory
; wavelength
; air pollution
; air quality
; altitude
; Article
; climate change
; comparative study
; controlled study
; desert
; dust
; environmental impact
; France
; heat wave
; humidity
; priority journal
; radiative forcing
; remote sensing
; surface property
; Africa
; France
; France
; Ile de France
; North America
; Paris
; Ville de Paris
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The aerosol layers during the heat wave of July 2015 over Paris Area have been studied using a N2-Raman lidar with co- and cross-polarized channels. The lidar observations are examined to allow the identification of main aerosol types and their origins, in synergy with measurements of the AERONET sunphotometer network and back trajectory studies from the HYSPLIT model. The results are compatible with spaceborne observations of MODIS and CALIOP. As for previous heat waves of August 2003 and July 2006 occurring in France, the aerosol optical thickness is very large, up to 0.8 at the lidar wavelength of 355 nm (between 0.5 and 0.7 at 550 nm). However, air mass trajectories highlight that the observed aerosol layers may have multiple and diverse origins during the 2015 heat wave (North America, Northwest Africa, Southern and Northern Europe). Biomass burning, pollution and desert dust aerosols have been identified, using linear particle depolarization ratio, lidar ratio and analysis of back trajectories initiated at the altitudes and arrival times of the plumes. These layers are elevated and are shown to have little impact on surface aerosol concentrations (PM10 < 40 μg m−3 or PM2.5 < 25 μg m−3) and therefore no influence on the local air quality during the 2015 heat wave, unlike in 2003 and 2006. However, they significantly modify the radiative budget by trapping part of the solar ingoing/outgoing fluxes, which leads to a mean aerosol radiative forcing close to +50 ± 17 Wm-2 per aerosol optical thickness unit at 550 nm (AOT550) for solar zenith angles between 55 and 75°, which are available from sunphotometer measurements. This value is smaller than those of the 2003 and 2006 heat waves, which are assessed to be +95 ± 13 and +70 ± 18 Wm-2/AOT550, respectively. The differences between the heat wave of 2015 and the others are mainly due to both the nature and the diversity of aerosols, as indicated by the dispersion of the single scattering albedo distributions at 550 nm: 0.90 ± 0.03, 0.95 ± 0.02 and 0.93 ± 0.04 for 2003, 2006 and 2015, respectively. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82342
Appears in Collections: 气候变化事实与影响
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作者单位: LSCE (IPSL), CEA-CNRS-UVSQ, UMR 8212, Gif-sur-Yvette, France
Recommended Citation:
Chazette P,, Totems J,, Shang X. Atmospheric aerosol variability above the Paris Area during the 2015 heat wave - Comparison with the 2003 and 2006 heat waves[J]. Atmospheric Environment,2017-01-01,170