合肥地区气溶胶光学厚度的时间变化特征
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摘要
利用太阳辐射计CE318对合肥地区大气气溶胶进行长期系统的观测,对2002年至2007年间的观测数据进行反演分析,得出了气溶胶光学厚度随时间变化的统计特征.结果表明合肥地区气溶胶光学厚度日变化有5种类型;气溶胶光学厚度随月份有波浪式变化,月平均值在4月份和8月份分别达到最大值0.727和最小值0.192;四季中春秋季节的气溶胶光学厚度大于夏冬季节,春季最大0.636,夏季最小0.262;2004年至2007年冬季气溶胶光学厚度有逐年增大的趋势.
The atmospheric aerosols above Hefei were observed systemically and chromatically with a sun photometer CE318.The aerosol optical depth(AOD) was retrieved from the direct solar radiation data between January 2002 and December 2007,and the temporal characteristics of AOD above Hefei were analyzed.The statistic results show that there are 5 daily variation types of AOD.The AOD variation with the progression of months is wavy,reaching the maximum 0.727 and the minimum 0.192 in April and August respectively.The AOD in spring and summer is higher than that in summer and winter and it averages at 0.636 and 0.262 in Spring and Summer respectively.The AOD in winter has exhibited a steady increase from 2004 to 2007.
The atmospheric aerosols above Hefei were observed systemically and chromatically with a sun photometer CE318.The aerosol optical depth(AOD) was retrieved from the direct solar radiation data between January 2002 and December 2007,and the temporal characteristics of AOD above Hefei were analyzed.The statistic results show that there are 5 daily variation types of AOD.The AOD variation with the progression of months is wavy,reaching the maximum 0.727 and the minimum 0.192 in April and August respectively.The AOD in spring and summer is higher than that in summer and winter and it averages at 0.636 and 0.262 in Spring and Summer respectively.The AOD in winter has exhibited a steady increase from 2004 to 2007.
引文
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[4]Perrone M R,Santese M,Tafuro A M,et al.Aerosolload characterization over South-East Italy for one yearof AERONET sun-photometer measurements[J].Atmospheric Research,2005,(75):111-133.
[5]Biggar S F,Gellman D I,Slater P N.Improvedevaluation of optical depth components from Langleyplot data[J].Remote Sens Environ,1990,32:91-101.
[6]Nicolet M.The solar spectral irradiance and its actionin the atmospheric photodissociation process[J].Planet Space Sci,1981,29:951-974.
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[9]Holben B N,Eck T F,et al.A federated instrumentnetwork and data archive for aerosol characterization[J].Remote Sens Environ,1998,66:1-16.
[10]Zhang Yuping,Yang Shizhi,Zhao Qiang,et al.Observation and analyse of aerosol optical properties inBositeng Lake area[J].Journal of Atmospheric andEnvironmental Optics,2007,2(1):38-43.张玉平,杨世植,赵强,等.新疆博斯腾湖地区气溶胶光学特性的观测分析[J].大气与环境光学学报,2007,2(1):38-43.
[11]Ma Guangming,Wei Qingnong,Wang Shimei.Measurements of aerosol optical depth from solarradiation over Hefei region[J].Journal of Atmosphericand Environmental Optics,2006,1(1):41-46.马光明,魏庆农,汪世美.利用太阳辐射测量合肥地区气溶胶光学厚度[J].大气与环境光学学报.2006,1(1):41-46.
[12]Zhou Jun,Yue Guming,Qi Fudi,et al.Opticalproperties of aerosol derived from lidar measurements[J].Chinese Journal of Quantum Electronics,1998,15(2):140-148.周军,岳古明,戚福第,等.大气气溶胶光学特性激光雷达探测[J].量子电子学报,1998,15(2):140-148.
目录