基于太阳光度计测量确定分层大气消光系数  

Extinction Coefficient of Stratified Atmosphere Measured by Sun-Photometer

作　　者：徐梦春 徐青山(指导)[1] 边健[1,2,3] 王艺然 李学彬[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所,大气成分与光学重点实验室,安徽合肥230031 [2]中国科学院大学,北京100049 [3]合肥学院数学与物理系,安徽合肥230601

出　　处：《光学学报》2014年第12期6-13,共8页Acta Optica Sinica

基　　金：国家自然科学基金青年基金(41105021);气象专项(GYHY201106002-03)

摘　　要：太阳光度计是地基探测整层大气光学参数的重要仪器,而在一些研究与工程应用中更需要了解低层大气光学参数。基于均匀平行球面大气分层的假定,提出了利用太阳光度计测量的数据确定分层大气平均消光系数的算法。应用该算法处理POM-02太阳光度计的实际测量数据,研究表明这种分层算法得到的大气总光学厚度与整层算法得到的大气总光学厚度的相对误差小于3%。利用该分层算法求得的低层大气平均消光系数与激光雷达测量的消光系数进行比较,两者具有较好的一致性。因此,这种利用太阳光度计测量数据确定分层大气平均消光系数的算法是可行的,该算法拓展了太阳光度计的应用。Sun-photometer is one of the main instruments for ground-based detecting atmospheric optical parameter of whole atmospheric layer. The atmospheric optical parameters of lower atmosphere are more desiderated in some researches and projects. Based on the assumption of uniform parallel sphere of stratified atmosphere, a new algorithm for average extinction coefficient of stratified atmosphere measured by sun-photometer is put forward. When dealing with the data measured by sun-photometer POM-02, the relative error of atmospheric optical depth gained hy stratified atmospheric algorithm and whole atmospheric layer algorithm is less than 3 %. The atmospheric average extinction coefficient of lower atmosphere got by stratified atmospheric algorithm is compared with the atmospheric average extinction coefficient by lidar. The results show that they have a good consistency. Therefore, the stratified atmospheric algorithm is feasible, and it extends the sun-photometer＇s application.

关 键 词：大气光学 太阳光度计 分层大气 消光系数 光学厚度 激光雷达 

分 类 号：P407.4[天文地球—大气科学及气象学]