昆明地区春季紫外辐射监测及变化研究

Observation and study on UV irradiance variation over Kunming in spring

通过 5台UV仪器的野外观测 ,获取到昆明 2 0 0 3年 4 ,5月份地面紫外辐照度资料 ,并在此基础上对不同仪器、波段进行比较分析 ;在我国首次较全面系统地公布了滇中地区春季以 2 97,31 2nm和 36 5nm为中心波长的太阳紫外波段测量结果 ;通过全天观测 ,获得了同时期该地区紫外辐射的日变化特征 ;并利用相应时期昆明DOBSON仪测取的臭氧资料、太阳高度角资料与紫外辐射资料对比分析 。

The UV irradiance data from April to May in 2003 were obtained in Kunming by field observation with five ultraviolet radiation instruments.Based on these data,observational comparison and basic analysis are presented for different instruments and different wavelengths.The temporal-spatial characteristics of UV irradiance,whose center-wavelength is 297,312?nm and 365?nm respectively,are gained via comparing the UV data.Furthermore,by using all-day observation,it is found the daily variation characteristics of the radiation intensity derived from the observations of UV meters in spring.Finally,by comparison with other data,such as those of sun altitude and total ozone in the same period,it has been also arrived at some interesting results.