DOI: 10.1016/j.atmosenv.2015.08.042
Scopus记录号: 2-s2.0-84939618976
论文题名: Characteristics of atmospheric aerosol optical depth variation in China during 1993-2012
作者: Xu X ; , Qiu J ; , Xia X ; , Sun L ; , Min M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 119 起始页码: 82
结束页码: 94
语种: 英语
英文关键词: Aerosol optical depth
; Direct solar radiation
; Relative humidity
Scopus关键词: Aerosols
; Atmospheric humidity
; Atmospheric thermodynamics
; Image reconstruction
; Mean square error
; Optical properties
; Radiometers
; Satellite imagery
; Solar radiation
; Aerosol optical depths
; Aerosol robotic networks
; Correlation coefficient
; Direct solar radiation
; Hygroscopic growth
; Moderate resolution imaging spectroradiometer
; Root mean square errors
; Variation characteristics
; Atmospheric aerosols
; aerosol
; hygroscopicity
; MODIS
; optical depth
; relative humidity
; seasonal variation
; solar radiation
; wavelength
; aerosol
; aerosol optical depth
; altitude
; Article
; autumn
; calibration
; China
; controlled study
; humidity
; latitude
; longitude
; optical depth
; particle size
; precipitation
; priority journal
; seasonal variation
; solar radiation
; spring
; summer
; turbidity
; visibility
; winter
; Beijing [China]
; China
; Guangdong
; Guangzhou
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 long-term variations of atmospheric aerosol optical depth (AOD) over 14 first-class solar radiation stations in China during 1993-2012 are studied. The AOD at 750 nm wavelength is retrieved with the hourly accumulated direct solar radiation by using a broadband extinction method. The retrievals are validated in comparison with AERONET (Aerosol Robotic Network) and MODIS (Moderate Resolution Imaging Spectroradiometer) AOD products. For the comparison with AERONET, the correlation coefficient (R), mean bias error (MBE) and root mean square error (RMSE) of the monthly mean AODs are respectively 0.848, 0.029 and 0.101. Based on the statistical analysis, the monthly, seasonal and annual AOD variation characteristics are categorized as follow: (1) There are three major types of the seasonal AOD variations, which shows the largest seasonal averaged AOD appearing in spring, summer and winter. The smallest seasonal averaged AOD appears mostly in autumn. (2) Beijing and Guangzhou show a significant decreasing trend of the yearly AOD, while an increasing tendency appears in Zhengzhou, Shanghai, Kunming, Kashi and Wuhan. Although no significant variation trends are found, some fluctuations appear in the 20-year period in other cities. (3) The 20-year mean AOD ranges from 0.135 (Lhasa) to 0.678 (Zhengzhou). The aerosol hygroscopic growth contributes a lot to AOD in major cities in the eastern part of China, while not in most cities in the western part. A simple correction method is applied for enhancing the relationship of AOD and PM2.5 concentration. © 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81574
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; National Satellite Meteorological Center, China Meteorological Administration, Beijing, China
Recommended Citation:
Xu X,, Qiu J,, Xia X,et al. Characteristics of atmospheric aerosol optical depth variation in China during 1993-2012[J]. Atmospheric Environment,2015-01-01,119