摘要
紫外线指数一般用 0～ 1 5的数字来表示 ,通常规定 ,夜间的紫外线指数为 0 ,在热带高原地区 ,晴天无云时的紫外线指数为 1 5。世界气象组织规定了单位紫外线指数相当于 2 5 m W/m2 红斑加权剂量率。紫外线指数预报大致可分为统计预报方法和模式预报方法两种。统计预报方法主要依赖于高精密度、高准确性的紫外线实测资料和相关的气象要素观测 ;
Ultraviolet Index (UVI)is 0—15,a unitless value.At night,UVI is 0.On tropical plateau,UVI is 15 on clear sky.The WMO standard UV index unit is equal to 25mW/m 2 erythemally weighted dose rate.The major methods of forecast of surface sunny Ultraviolet Index consist of statistics forecast and model forecast.The statistics forecast mainly depends on the observed UVI and cloud amount data,and the model forecast mainly depends on forecasting the ozone field and applied radiative transfer model.
出处
《气象》
CSCD
北大核心
2000年第12期38-42,共5页
Meteorological Monthly
