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大气科学  2002 

拉萨地区生物有效紫外辐射初步分析

DOI: 10.3878/j.issn.1006-9895.2002.04.05

Keywords: 拉萨地区,紫外辐射

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Abstract:

根据1996~1998年由NILUV紫外辐射仪在西藏拉萨地区观测的紫外辐射资料,分析了青藏高原拉萨地区生物有效辐射的分布特征.结果表明,1997年日正午最大生物有效紫外辐射剂量率(UVdoserate)达到500mWm-2,最小值为9.7mWm-2;晴天时生物有效辐射剂量率的日变化呈规则曲线,且早晚小,中午大;一年中紫外辐射变化的总趋势是由太阳天顶角决定的,紫外辐射的日变化和年变化是其最主要、最基本的变化;西藏拉萨地区的月平均红斑辐射剂量明显高于全球其他同纬度地区.

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