大气气溶胶具有很强的时空变化特性,而气溶胶标高是反映大气气溶胶垂直分布特性的一个重要参量,常规获取大气气溶胶标高的方法需要多种仪器进行联合测量.基于均匀平行球面大气分层的假定,研究了利用太阳光度计的分层算法获取大气气溶胶标高的方法.结果表明,利用该分层算法可仅利用太阳光度计一种仪器同时获得各分层大气平均消光系数和光学厚度、气溶胶垂直分布高度、气溶胶标高等参数.该算法所得气溶胶标高与常规方法获得的气溶胶标高进行比较,相对误差在10%以内;得到的大气总光学厚度与整层算法计算的大气总光学厚度的相对误差小于2%.因而,利用该分层算法仅使用太阳光度计一种仪器来获取气溶胶标高的方法是可行的,拓展了太阳光度计的应用.

Atmospheric aerosol has a strong characteristic of temporal and spatial variation.Aerosol scale height is an important physical parameter to reflect atmospheric aerosol vertical distribution,which is often measured by several instruments simultaneously.Based on the assumption of uniform parallel sphere of stratified atmosphere,a new method that aerosol scale height is obtained only by sun-photometer is studied,using stratified atmospheric algorithm.The research indicates that the parameters such as average extinction coefficient and the optical depth of stratified atmosphere,atmospheric aerosol vertical distribution height,and aerosol scale height can be gotten by the stratified atmospheric algorithm only using sun-photometer.Compared with conventional method,the relative error of aerosol scale height gained by stratified atmospheric algorithm is less than 10%.The relative error of atmospheric optical depth gained by stratified atmospheric algorithm and whole atmospheric algorithm is less than 2%.Therefore,using stratified atmospheric algorithm to obtain aerosol scale height only by sun-photometer is feasible,and it extends the sun-photometer′s application.