辽宁太阳紫外线辐射特征及强度预报

利用紫外线观测仪器对辽宁4个地区紫外线辐射强度进行观测,研究了辽宁地区紫外线辐射强度的变化特征;分析了影响到达地面紫外线辐射强度的因子,结合MM5数值模式建立了统计预测模型,建立了紫外线辐射强度分级标准和对人体健康影响的对应关系。结果表明:辽宁地区的紫外线辐射强度,总体上是西、北部较东、南部稍强,但相差不大;紫外线辐射强度具有明显的季节变化,夏季最大、冬季最小。每年5～9月紫外线强度维持在一个较高的水平,日最大值出现在每日的11～14时。夏季紫外线对人体的影响最大,冬季基本无影响。云量的变化对紫外线强度的影响较大。紫外线辐射强度预报模型的预测结果较为理想。

Characteristics of ultraviolet radiation and its intensity prediction in Liaoning province

With the equipment of ultraviolet radiation,the ultraviolet intensities in 4 sites of Liaoning province were monitored.It showed that the ultraviolet radiation intensities in west and north Liaoning province were stronger than those in east and south Liaoning province.The radiation intensities were different in different seasons.It was stronger in summer.There was the period of stronger radiation from May to September,especially in July.The daily strongest radiation appearred from 11:00 a.m.to 14:00 p.m.The radiation in summer was harmful to human health.The cloud was the main controlling factor of the radiation.The prediction method was developed and could give a good prediction.