紫外线强度等级确定因子的季节性选择  

Seasonal choice of factors defining the ultraviolet radiation intensity levels

作　　者：毛宇清 姜爱军[2,1] 沈澄 颜庭柏 

机构地区：[1]南京市气象局,南京210009 [2]南京信息工程大学大气科学学院,南京210044

出　　处：《气象科学》2010年第4期516-521,共6页Journal of the Meteorological Sciences

基　　金：南京市气象局2008年科研开发项目(NJ200805);南京社会发展项目(200701100)

摘　　要：利用南京市2005年2月—2009年1月的紫外线辐射观测资料,分析了到达地面的紫外线辐射强度的季节变化和日变化规律,并重点对各月10—14时的紫外线辐射平均值、最大值和最小值的强度级别分布频率进行了分析和讨论,提出根据不同季节来选择不同的紫外线辐射特性值作为紫外线强度等级的确定因子,夏季采用10—14时的紫外线辐射强度的最大值,冬季采用其最小值,春季和秋季采用其平均值。The seasonal and daily variation characters of surface solar ultraviolet radiation in Nanjing are analyzed by using the ultraviolet radiation observation data from February of 2005 to January of 2009.The frequencies which describe the average,maximum and minimum values of ultraviolet radiation intensity levels＇ distribution between 10：00 and 14：00 every month are discussed and analyzed.The results show that we can select different characteristic values according to different seasons as factors defining the ultraviolet radiation intensity levels.In summer,we choose the maximum ultraviolet radiation intensity between 10：00 and 14：00,and in winter we select the minimum one.In spring and autumn,we pick the average ultraviolet radiation intensity between 10：00 and 14：00 as the factor.

关 键 词：紫外线辐射 强度 等级 季节性 

分 类 号：P422.62[天文地球—大气科学及气象学]