Brewer分光光度计遥感大气臭氧垂直廓线的研究

A STUDY OF REMOTE SENSING OZOE VERTICAL PROFILE IN THE A TMOSPHERE USING BREWER OZONE SPECTROPHOTOMETER

利用建立的球面分层大气散射模式，研究了Ｂｒｅｗｅｒ仪器工作波长进行Ｕｍｋｅｈｒ短法反演所包含的信息量，给出Ｂｒｅｗｅｒ仪器探测大气臭氧垂直廓线的方法。同时，用气溶胶光学厚度计算得到气溶胶订正系数，建立了Ｕｍｋｅｈｒ反演的程序，用此程序对ＴａｂｌｅＭｏｕｎｔａｉｎ资料进行气溶胶修正，得到了较好的结果。对北京测站１９９１年１─３月资料进行由气溶胶造成的臭氧反演廓线的误差计算，结果表明，用常规反演方法得到的各层臭氧含量的误差与平流层气溶胶光学厚度有一近似线性的关系；进行气溶胶修正后，与国外的臭氧反演廓线的误差修正工作￣［１］比较，结果较一致。研究提出的气溶胶订正反演方法为更好地对平流层臭氧变化趋势进行研究提供了可能性和可靠的基础。

A spherical shell model has been carried out to analyze the information content ofUmkehr measurement of Brewer work wavelengths,and a new method considering theaerosol effects on ozone profile retrieval is given by using Brewer spectrophotometer。The new method which put the aerosol correction directly into Umkehr inversionalgorithm is described in detail,and the aerosol optical thickness is used to calculate theaerosol correction coefficient.The Table Mountain data has been analyzed using thismethod.The results are in better agreement with other measurement results.Beijingdata from January to March,1991 are also processed.There exists an approximatelylinear relationship between stratospheric aerosol optical thickness and aerosol errors ofeach Umkehr layer produced by normal method without aerosol correction。The resultswith aerosol correction are well compared with other work。