合肥地区气溶胶光学特性的地基观测研究
|
摘要
利用自主研制的DTF-5型太阳辐射计观测合肥地区2008年10月—2010年5月的太阳直接辐射消光,反演合肥地区气溶胶光学厚度、Angstrom参数和沙尘天气过程中的粒子谱分布,并对结果进行分析。结果表明:合肥地区气溶胶光学厚度季节变化除气候因素外,受人为因素影响明显,季节变化规律复杂。总体上秋季较小,冬春季节持续增大,夏季较平稳。而Angstrom参数与气溶胶光学厚度大致呈反相关,秋冬上升,春季骤降,夏季平稳值较大。气溶胶光学厚度日变化大致可分为4种类型:日变化相对稳定;整体呈上升趋势;整体呈下降趋势;一日内出现一到多个峰值。其中第四种类型出现几率最大。沙尘天气过程中,气溶胶光学厚度和Angstrom参数分别呈现出"谷-峰-谷"、"峰-谷-峰"的变化规律,其中Angstrom参数在沙尘影响严重时甚至出现负值。半径为0.2~1.0μm的大粒子和大于1.0μm的巨粒子浓度在沙尘天气过程中大幅增加。
A self-made ground-based sun-photometer was used to measure the direct solar irradiances,from October 2008 to May 2010 over Hefei,China.The aerosol optical depth(AOD),Angstrom parameter(α),and the spectrum distribution of aerosol particles during the strong dust storms were retrieved.The seasonal variation of AOD was complex,it's related to not only the seasonal variation of the synoptic weather pattern of Hefei,but also the human activities closely.In a word,the AOD was minimum in autumn,increase during winter and spring,and kept intermediate in summer.The variation in α was opposite to AOD,which increased in autumn and winter,decreased sharply in spring,and kept moderate value in summer.There were four diurnal variability patterns of AOD that AOD remained almost constant;AOD gradually increased over the day;AOD showed a general trend of decrease;AOD showed one or more peak value during the day,which occured most frequently.The variation of AOD indicated an obvious "valley-peak-valley" pattern during the strong dust storm,while α demonstrates a "peak-valley-peak" pattern.The aerosol size distributions indicated that more large particles with radius of 0.2~1.0 μm and >1.0 μm were injected into the atmosphere during the dust outbreak episode.
A self-made ground-based sun-photometer was used to measure the direct solar irradiances,from October 2008 to May 2010 over Hefei,China.The aerosol optical depth(AOD),Angstrom parameter(α),and the spectrum distribution of aerosol particles during the strong dust storms were retrieved.The seasonal variation of AOD was complex,it's related to not only the seasonal variation of the synoptic weather pattern of Hefei,but also the human activities closely.In a word,the AOD was minimum in autumn,increase during winter and spring,and kept intermediate in summer.The variation in α was opposite to AOD,which increased in autumn and winter,decreased sharply in spring,and kept moderate value in summer.There were four diurnal variability patterns of AOD that AOD remained almost constant;AOD gradually increased over the day;AOD showed a general trend of decrease;AOD showed one or more peak value during the day,which occured most frequently.The variation of AOD indicated an obvious "valley-peak-valley" pattern during the strong dust storm,while α demonstrates a "peak-valley-peak" pattern.The aerosol size distributions indicated that more large particles with radius of 0.2~1.0 μm and >1.0 μm were injected into the atmosphere during the dust outbreak episode.
引文
[1]邱金桓.从全波段太阳直射辐射确定大气气溶胶光学厚度I:理论[J].大气科学,1995,19(4):385-394
[2]邱金桓.从全波段太阳直射辐射确定大气气溶胶光学厚度II:实验研究[J].大气科学,1995,19(5):586-596
[3]罗云峰,吕达仁,李维亮,等.近30年来中国地区大气气溶胶光学厚度的变化特征[J].科学通报,2000,5(5):549-554
[4]罗云峰,吕达仁,周秀骥,等.30年来我国大气气溶胶光学厚度平均分布特征分析[J].大气科学,2002,26(6):721-730
[5]宗雪梅,邱金桓,王普才.近10年中国16个台站大气气溶胶光学厚度的变化特征分析[J].气候与环境研究,2005,10(2):1-8
[6]王跃思,辛金元,李占清,等.中国地区大气气溶胶光学厚度与Angstrom参数联网观测(2004-08—2004-12)[J].环境科学,2006,27(9):1 703-1 711
[7]LIU Jianjun,ZHENG Youfei,LI Zhanqing,et al.Ground-basedremote sensing of aerosol optical properties in one city in NorthwestChina[J].Atmospheric Research,2008,89:194-205
[8]XIN Jinyuan,DU Wupeng,WANG Yuesi,et al.Aerosol opticalproperties affected by a strong dust storm over central and northernChina[J].Advances in Atmospheric Sciences,2010,27(3):562-574
[9]YU Xingna,CHENG Tiantao,CHEN Jianmin,et al.A comparison ofdust properties between China continent and Korea,Japan in EastAsia[J].Atmospheric Environment,2006,40:5 787-5 797
[10]NICOLAS B,OLIVIER B,JIM H,et al.Global estimate of aerosoldirect radiative forcing from satellite measurements[J].Nature,2005,438:1 138-1 141
[11]WANG Hong,SHI Guangyu,LI Shuyan,et al.The impacts ofoptical properties on radiative forcing due to dust aerosol[J].Advancesin Atmospheric Sciences,2006,23(3):431-441
[12]CHEN Hongbin,XIA Xiangao,WANG Pucai,et al.Ground-basedmeasurements of aerosol optical properties and radiative forcing inNorth China[J].China Particuology,2007,5:202-205
[13]ZHOU Jun,WANG Zhi'en,HAN Jiecai,et al.Variability of aerosoloptical properties over Hefei during September 1993 to September1994[J].Acta Meteorologica Sinica,1996,10(1):81-95
[14]刘玉杰,牛生杰,郑友飞.用CE-318太阳光度计资料研究银川地区气溶胶光学厚度特性[J].南京气象学院学报,2004,27(5):615-622
[15]ZHOU Jun,HALL F F Jr.Infrared lidar measurements of crustalaerosol mixingin the troposphere[J].Appl Opt,1988,27:2639-2640.
[16]KING M D,BYME D L,HERMAN B M,et al.Aerosol sizedistributions obtained by inversion of spectral optical depth measurem-ents[J].J Atmos Sci,1978,35:2 153-2 167
[17]XIN Jinyuan,WANG Shigong,WANG Yuesi,et al.Opticalproperties and size distribution of dust aerosols over the TenggerDesert in Northern China[J].Atmospheric Environment,2005,39:5 971-5 978
[2]邱金桓.从全波段太阳直射辐射确定大气气溶胶光学厚度II:实验研究[J].大气科学,1995,19(5):586-596
[3]罗云峰,吕达仁,李维亮,等.近30年来中国地区大气气溶胶光学厚度的变化特征[J].科学通报,2000,5(5):549-554
[4]罗云峰,吕达仁,周秀骥,等.30年来我国大气气溶胶光学厚度平均分布特征分析[J].大气科学,2002,26(6):721-730
[5]宗雪梅,邱金桓,王普才.近10年中国16个台站大气气溶胶光学厚度的变化特征分析[J].气候与环境研究,2005,10(2):1-8
[6]王跃思,辛金元,李占清,等.中国地区大气气溶胶光学厚度与Angstrom参数联网观测(2004-08—2004-12)[J].环境科学,2006,27(9):1 703-1 711
[7]LIU Jianjun,ZHENG Youfei,LI Zhanqing,et al.Ground-basedremote sensing of aerosol optical properties in one city in NorthwestChina[J].Atmospheric Research,2008,89:194-205
[8]XIN Jinyuan,DU Wupeng,WANG Yuesi,et al.Aerosol opticalproperties affected by a strong dust storm over central and northernChina[J].Advances in Atmospheric Sciences,2010,27(3):562-574
[9]YU Xingna,CHENG Tiantao,CHEN Jianmin,et al.A comparison ofdust properties between China continent and Korea,Japan in EastAsia[J].Atmospheric Environment,2006,40:5 787-5 797
[10]NICOLAS B,OLIVIER B,JIM H,et al.Global estimate of aerosoldirect radiative forcing from satellite measurements[J].Nature,2005,438:1 138-1 141
[11]WANG Hong,SHI Guangyu,LI Shuyan,et al.The impacts ofoptical properties on radiative forcing due to dust aerosol[J].Advancesin Atmospheric Sciences,2006,23(3):431-441
[12]CHEN Hongbin,XIA Xiangao,WANG Pucai,et al.Ground-basedmeasurements of aerosol optical properties and radiative forcing inNorth China[J].China Particuology,2007,5:202-205
[13]ZHOU Jun,WANG Zhi'en,HAN Jiecai,et al.Variability of aerosoloptical properties over Hefei during September 1993 to September1994[J].Acta Meteorologica Sinica,1996,10(1):81-95
[14]刘玉杰,牛生杰,郑友飞.用CE-318太阳光度计资料研究银川地区气溶胶光学厚度特性[J].南京气象学院学报,2004,27(5):615-622
[15]ZHOU Jun,HALL F F Jr.Infrared lidar measurements of crustalaerosol mixingin the troposphere[J].Appl Opt,1988,27:2639-2640.
[16]KING M D,BYME D L,HERMAN B M,et al.Aerosol sizedistributions obtained by inversion of spectral optical depth measurem-ents[J].J Atmos Sci,1978,35:2 153-2 167
[17]XIN Jinyuan,WANG Shigong,WANG Yuesi,et al.Opticalproperties and size distribution of dust aerosols over the TenggerDesert in Northern China[J].Atmospheric Environment,2005,39:5 971-5 978
目录
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |