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中文摘要: 首先把河南省不完整的太阳辐射资料，用经验公式推算到近40年（1960～1997年）的资料。并把只有总日射资料的站，利用经验公式，计算出直接辐射、散射辐射资料。在此基础上，用方差分析找出太阳辐射的周期变化规律，发现河南省太阳总辐射具有减少的趋势，直接辐射也呈减少趋势，散射辐射北部、南部呈减少趋势，中部呈增多趋势。初步研究证明，大气中总悬浮微粒的增加是导致太阳总辐射减少的重要原因。
中文关键词: 总辐射，直接辐射，散射辐射，周期，云量，TSP浓度
Abstract:The scarce annual global solar radiation data of Henan Province were extended to recent 40 years (1960～1997) by experimental formula, and direct solar radiation and scatting solar radiation data were calculated by another experimental formula for the stations with the only global solar radiation data. Based on the above analysis, variation period of the solar radiation was found by the method of variance analysis, obvious decreasing trend of the global solar radiation of Henan was found. The direct solar radiation is also decreasing on the one hand, while on the other, the scatting solar radiation of north and south of Henan is decreasing. On the contrary, the scatting solar radiation of middle of Henan is increasing. The preliminary conclusion was drawn that the increase of the TSP concentration is an important reason for the decrease of the global solar radiation.
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基金项目:河南省重点课题”河南省高效农业耕作制气候资源利用研究“的支持
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引用文本：
张雪芬,陈东,付祥健,郑银鹤,1999.河南省近40年太阳辐射变化规律及其成因探讨[J].气象,25(3):21-25.
,1999.Analysis of the Regularity and Forming Reasons of the Solar Radiation Variation of Henan in Recent 40 Years[J].Meteor Mon,25(3):21-25.
张雪芬,陈东,付祥健,郑银鹤,1999.河南省近40年太阳辐射变化规律及其成因探讨[J].气象,25(3):21-25.
,1999.Analysis of the Regularity and Forming Reasons of the Solar Radiation Variation of Henan in Recent 40 Years[J].Meteor Mon,25(3):21-25.