Long-Term Variation of Aerosol Optical Depth in China Based on Meteorological Horizontal Visibility Observations
利用地面水平能见度估算并分析中国地区气溶胶光学厚度长期变化特征

After processing the visibility data inhomogeneity from inconsistent record formats before and after the year 1980,the authors obtain the long-term time series of visibility,from which the time series of atmospheric aerosol optical depth over China during 1960 to 2005 is derived.It shows well consistency with former observations and researches on long-term variation of aerosol optical depth over China.It is found that the aerosol optical depth over China showed an increasing trend but a slow upward trend af...