利用CE318太阳光度计资料反演合肥气溶胶光学特性
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摘要
利用2012年9月~2014年8月年合肥市西北郊的CE318型太阳光度计观测资料,分析了合肥地区气溶胶光学厚度(AOD)和Angstrom波长指数(α)的时间变化特征。结果表明,合肥地区AOD全年较高,2012年9月~2013年8月和2013年9月~2014年8月两个时段的年平均值分别为0.60±0.15和0.73±0.23。春季受沙尘天气影响气溶胶波长指数最小,秋季受西北高空气团影响AOD最低。研究了AOD和大气水汽含量之间的关系,结果表明AOD和大气水汽含量呈正相关关系。利用Hysplit风场轨迹模型对各个季节的风场进行了研究,合肥春季主要受西北气流(约42%)影响,夏季风场主要受偏南风场(约50%)影响,秋季受北风风场(约39%)影响较大,冬季受西北高空气团影响较大。CE318和MODIS对比结果表明,两者具有较好的一致性,相关系数在0.7以上。
The temporal characteristics of Aerosol Optical Depth(AOD) and Angstrom exponent were analyzed using the sun photometer(CE318) data from September 2012 to August 2014 in north-west region of Hefei. It shows the aerosol optical depth in Hefei is higher in the whole year. The annual mean AOD is 0.60±0.15 from September 2012 to August 2013 and 0.73 ±0.23 from September 2013 to August2014. The aerosol wavelength exponent in Spring is the least and the optical depth in the autumn is the least. The study of AOD and atmospheric water vapor content shows a positive correlation. The back trajectory analysis indicates that Hefei area is mainly influenced by northwest currents(about 42%) in spring, influenced by southward currents(about 50%)in summer, influenced by northward currents(about39%) in autumn and influenced by northwest in the high altitude. The relationship between MODIS retrieved and sun photometer CE318 shows a good agreement and the correlation coefficient is above0.70.
The temporal characteristics of Aerosol Optical Depth(AOD) and Angstrom exponent were analyzed using the sun photometer(CE318) data from September 2012 to August 2014 in north-west region of Hefei. It shows the aerosol optical depth in Hefei is higher in the whole year. The annual mean AOD is 0.60±0.15 from September 2012 to August 2013 and 0.73 ±0.23 from September 2013 to August2014. The aerosol wavelength exponent in Spring is the least and the optical depth in the autumn is the least. The study of AOD and atmospheric water vapor content shows a positive correlation. The back trajectory analysis indicates that Hefei area is mainly influenced by northwest currents(about 42%) in spring, influenced by southward currents(about 50%)in summer, influenced by northward currents(about39%) in autumn and influenced by northwest in the high altitude. The relationship between MODIS retrieved and sun photometer CE318 shows a good agreement and the correlation coefficient is above0.70.
引文
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[2]Liu Guiqing,Li Chengcai,Zhu Aihua,et al.Optical depth research of atmospheric aerosol in the Yangtze River Delta Region[J].Environment Protection,2003(8):50-54.(in Chinese)
[3]Holben B N,Eck T F,Slutsker I,et al.AERONET-A federated instrument network and data achieve for aerosol characterization[J].Rem Sens Environ,1998,66(1):1-16.
[4]Che H Z,Shi G,Uchiyama A,et al.Intercomparison between aerosol optical properties by a PREDE skyradiometer and CIMEL sunphotometer over Beijing,China[J].Atmos Chim Phys,2008,8(3):3199-3214.
[5]Wang P,Che H Z,Zhang X Y,et al.Aerosol optical properties of regional background atmosphere in Northeast China[J].Atmospheric Environmental,2010,44(3):4404-4412.
[6]Pan L,Che H Z,Geng F H,et al.Aerosol optical properties based on ground measurements over the Chinese Yangtze Delta Region[J].Atmospheric Environment,2010,44(3):2587-2596.
[7]Wang Hongbin,Zhang Lei,Liu Ruijin.Comparison and assessment of the MODIS C005 and C004 aerosol products over the China[J].Plateau Meteorology,2011,30(3):772-783.(in Chinese)
[8]Yang Jun,Niu Zhongqing,Shi Chun′e,et al.Microphysics of atmospheric aerosols during winter haze/fog events in Nanjing[J].Environmental Science,2010,31(7):1425-1431.(in Chinese)
[9]Song Lei,Lv Daren.Investigating of atmospheric optical characteristics over Shanghai region[J].Climatic and Environmental Research,2006,11(2):203-208.(in Chinese)
[10]Zhang Yuping,Yang Shizhi,Wang Xianhua.The temporal characteristics of atmospheric aerosol optical depth over Hefei[J].Journal of university of science and technology of China,2010,40(1):15-20.(in Chinese)
[11]Ren Yiyong,Li Xia,Lv Ming.Application prospect of measurement by sun photometer CE318 and retrieval methodology[J].Meteorological Science and Technology,2006,34(3):349-352.(in Chinese)
[12]Wang Zhenzhu.Study on aerosol optical properties and direct radiative effects over Hefei[D].Hefei:Hefei Institutes of Physical Science,Chinese Academy of Sciences,2010.(in Chinese)
[13]Xia Xiang′ao,Li Zhanqing,Brent Holben,et al.Aerosol optical properties and radiative effects in the Yangtze Delta Region of China[J].J Geophys Res,2007,112(D22):1323-1327.
[14]Yang Yuanjian,Fu Yunfei,Wu Biwen.Impacts of agricultural fire on aerosol distribution over east China during summer harvest time[J].Journal of Atmospheric and Environmental Optics,2013,8(4):241-252.(in Chinese)
[15]Deng Congrui.Identification of biomass burning source in aerosols and the formation mechanism of haze[D].Shanghai:Fudan University,2011.(in Chinese)
[16]Dong Zipeng,Li Xingmin,Du Xingli.Study on aerosol optical property in Xi′an region[J].Plateau Meteorology,2013,32(3):856-864.(in Chinese)
[17]Li Zhangqing,Xia Xiangao,Maureen Cribb,et al.Aerosol optical properties and their radiative effects in northern China[J].J Geophys Res,2007,112:D22S01.
[18]安徽水旱情信息网.月降雨量简报[EB/OL].[2015-06-11].http://shangqing.wswj.net/Uniting Briefing/P030.aspx.
[19]Song Ning,Tang Xiaoyan,Zhang Yuanhang.Effects on fine particles by the continued high temperature weather in Beijing[J].Environmental Science,2002,23(4):33-36.(in Chinese)
[20]Brimelow J C,Reuter G W.Transport of atmospheric moisture during three extremer ainfall events over the Mackenzie Riverbasin[J].Journal of Hydrometeorology,2005,6(4):423-440.
[21]Li Chengcai,Mao Jietai,Lau Kai,et al.Characteristics of distribution and seasonal variation of aerosol optical depth in eastern China with MODIS products[J].Chinese Sci Bull,2003,48(22):2488-2495.
目录
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