DOI: 10.1016/j.atmosres.2018.11.002
Scopus记录号: 2-s2.0-85056465348
论文题名: Aerosol vertical distribution and sources estimation at a site of the Yangtze River Delta region of China
作者: Fan W. ; Qin K. ; Xu J. ; Yuan L. ; Li D. ; Jin Z. ; Zhang K.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 217 起始页码: 128
结束页码: 136
语种: 英语
英文关键词: Aerosol
; LiDAR
; Vertical distribution
; Yangtze River Delta
Scopus关键词: Aerosols
; Atmospheric boundary layer
; Atmospheric humidity
; Atmospheric movements
; Atmospheric radiation
; Boundary layer flow
; Optical radar
; Particles (particulate matter)
; Rivers
; Biomass burning emissions
; High relative humidities
; Long-distance transport
; Planetary boundary layers
; Potential source contribution function
; Vertical distributions
; Xinjiang Uygur autonomous region
; Yangtze river delta
; Air pollution
; aerosol
; boundary layer
; estimation method
; haze
; lidar
; particulate matter
; pollutant transport
; radiative forcing
; vertical distribution
; China
; Gansu
; Mongolia
; Xinjiang Uygur
; Yangtze Delta
英文摘要: The vertical distribution characteristics of aerosols are key uncertain factors for studying the effect on radiative forcing and trans-regional transport of pollutants. This paper used three years (2013–2015) LiDAR measurements at a site in the Yangtze River Delta region of China to investigate the aerosol vertical distribution and transport sources of aerosol-aloft by using the Potential Source Contribution Function (PSCF) and Concentration-Weighted Trajectory (CWT) models. The results indicated that there were 230 haze days accounted for 21% of all the days, including 142 damp haze days and 88 dry haze days during the study period. The aerosols below 2 km accounted for >89% of the total aerosol optical depth (AOD). Compared to other seasons, aerosols in winter were more likely to accumulate below 1 km (>69%). In summer, although atmospheric convention was strong leading to a high planetary boundary layer height (PBLH) and the concentration of PM 2.5 was low, the AOD was largest because of high relative humidity that caused hygroscopic growth of particles. Due to the stable weather condition in winter, the PBLH was low with the largest concentration of PM 2.5 , so the occurrence of haze days was most frequent. The PSCF and CWT results revealed that the high-level aerosols mainly came from local areas; the CWT model showed considerable long-distance transports of dust from northern/northwestern China, as far as Mongolia, Gansu Province and Xinjiang Uygur Autonomous Region, in spring, autumn and winter. Southern sources were more obvious in winter that could contribute more anthropogenic aerosols and biomass burning emissions. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122365
Appears in Collections: 气候变化事实与影响
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作者单位: School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, China; German Aerospace Center, Remote Sensing Technology Institute, Weßling, Germany; Wuxi CAS Photonics Corporation, Wuxi, China
Recommended Citation:
Fan W.,Qin K.,Xu J.,et al. Aerosol vertical distribution and sources estimation at a site of the Yangtze River Delta region of China[J]. Atmospheric Research,2019-01-01,217