第23卷第10期 2015年10月
文章编号1004-924X(2015)10-2768-10
光学精密工程
Optics and Precision Engineering
Vol.23
No.10 Oct,2015
秸秆燃烧和沙尘对气溶胶光学特性的影响
官纯文1,2，李建玉1，李学彬1·，刘庆1，魏合理1,3
（1.中国科学院安徽光学精密机械研究所中国科学院大气成分与光学辐福射重点实验室，安徽合肥230031；
2.中国科学院大学，北京100049；3.中国科学技术大学环境光学学院，安徽合肥230031）
摘要：利用多年积累的我国儿个典型地区的太阳辐射计观测数据，反演了秸秆燃烧和沙尘日及其前后晴朗日的气溶胶光学厚度（AOD)和表征粒子尺度的Angstrom指数（α），并运用观测结果和反演数据对已知气溶胶源予以验证。对比分析了多个典型地区源自秸秆燃烧和沙尘的气溶胶光学特性，结果显示，秸秆燃烧和扬尘时AOD都大幅增加，而。在秸秆燃
的AOD与。的关系明显不同。分析结果表明，α可作为秸秆燃烧和沙尘天气的一个标志参数，为生物燃烧性有机碳黑
气溶胶光学特性的检测方法提供依据，也可为分析我国西北城市地区受周边沙漠的影响程度提供有益参考。关键词：气溶胶；光学厚度；太阳辐射计；秸轩燃烧；沙尘；Angstrom参数
中图分类号：P407.4;X831
文献标识码：A
doi:10.3788/OPE.20152310.2768
Influenceofstrawburninganddustonaerosolopticalproperties
GONG Chun-wen'", LI Jian-yu', LI Xue-bin', LIU Qing', WEI He-lil.3
(l.KeyLaboratoryof Atmospheric Composition and Optical Radiation,Anhui Instituteof Optics
andFineMechanics,ChineseAcademyofSciences，Hefei230031,China; 2.University of ChineseAcademy of Sciences,Beijing100049,China;
3.School of Emuirommental Optics,University of Scienceand Technology of China,Hefei 230031,China)
Correspondingauthor,E-mail.rbli@aiofm.ac.cn
Abstract:The Aerosol Optical Depth（AOD)and Angstrom indexes(a)influenced by straw burning， dust, and some sunny days were inverted by using the long-term measurement data from a sun-pho tometer in several typical regions of China. Then, the given aerosol sources were verified by the ob served data and retrieved results. The optical characteristics of aerosols influenced by straw burning and dust were analyzed in several typical regions of China. The results show that the AOD obviously increases for the cases with straw burning and dust in the city. The a is larger in the periods of straw burning than that in clear days, the values during straw burning days usually are greater than l. 3. However, the α is smaller during dust days than that during clear days, which is usually less than O. 5. The relationship between the AOD and the α influenced by different aerosols in different zones is evidently different. The results indicate that the a can be a benchmark parameter of straw burning and
收稿日期：2015-04-07；修订日期：2015-06-05
基金项目：国家自然科学基金面上项目（No.41475024）；国家863高技术研究发展计划资助项目