摘要
利用改进的离散坐标法紫外辐射传输模式，应用各种可测得的实际大气物理参数，模拟了１９９３年７月２４日德国加尔米希一帕特科琛（Ｇａｒｍｉｓｃｈ—Ｐａｒｔｅｎｋiｒｃｈｅｎ，４７．４７°Ｎ，１１０７°Ｅ）地面紫外辐射的全天分布，并与１９９３年秋天第三次欧洲紫外辐射光谱仪比对活动期间通过了严格绝对标定的奥地利莫斯布鲁克（Ｉｎｎｓｂｒｕｃｋ）大学的紫外光谱仪的实际观测资料进行了比较，进行了余弦响应订正后，计算与测量的绝对值差别很小，最大误差对地面ＵＶＢ通量（２８０～３２０ｎｍ）是０．０７Ｗ／ｍ２（正午的通量为３、２Ｗ／ｍ２）。对ＵＶＡ（３２０～４００ｎｍ）最大误差是２６Ｗ／ｍ２（正午通量为５４Ｗ／ｍ２）计算与测量的平均偏差为５％～１３％，这表明，地面紫外辐射水平也可以利用其他大气观测资料通过模式计算间接得到。
The surface UV radiation in Garmisch-Partenkirchen (47.47°N, 11.07°E) measured everyhour on July 24, 1993 has been simulated using a modified DISORT UV radiative transfer model withmeasured atmospheric parameters as inputs. The simulation has been compared to the measurementwith the spectroradiometer of the University of Innsbruck, Austria, for which accurate absolutecalibration has been conducted during the period of the third Intercomparison of European UltravioletSpectroradiometers in the Autumn of 1993. The average discrepancy between simulation andmeasurement was 5%-- 13%, the comparison shows that the absolute differences between model andmeasurement with cosine response correction are very small, the maximum errors are 0.07 W/ m2 forsurface UVB (280~ 320 um) flux compared to about 3.2 W/ m2 at noon and 2.6 W / m2 for UVA(320~ 400 um) flux compared to about 54 W/ m2 at noon. This means that the surface UV radiationcan be well simulated by measuring some key atmospheric measurements.
出处
《大气科学》
CSCD
北大核心
1999年第3期359-364,共6页
Chinese Journal of Atmospheric Sciences
基金
中国科学院择优支持回国工作基金
国家人事部留学人员科技活动经费
国家自然科学基金!49875001
