| 1960年以来长江流域太阳总辐射的时空变化 |
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| 引用本文： | 刘长坤,王艳君,郭媛.1960年以来长江流域太阳总辐射的时空变化[J].南京气象学院学报,2012,4(3):233-240. |
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| 作者姓名： | 刘长坤 王艳君 郭媛 |
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| 作者单位： | 南京信息工程大学遥感学院, 南京, 210044;南京信息工程大学遥感学院, 南京, 210044;南京信息工程大学遥感学院, 南京, 210044 |
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| 基金项目： | 国家自然科学基金(40701028);山东省水资源与水环境重点实验室开放基金(WRISD0901) |
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| 摘 要： | 基于长江流域147个站点的气象数据,利用气候学计算方法估算1960年以来的太阳总辐射数据,运用线性回归和相关分析等方法,探讨1960年以来太阳总辐射在长江流域的时空变化特征,并分析太阳总辐射的影响因子.结果表明:太阳总辐射在整个长江流域(除去上游源头区金沙江流域)自东向西递减,且上游地区变化波动大,中下游地区下降趋势显著;自1960年以来太阳总辐射在长江流域呈现下降趋势,1990年以后开始呈现上升趋势;近50a来太阳总辐射的减少趋势与云量和大气水汽含量没有显著相关性.
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| 关 键 词： | 太阳总辐射 时空分析 云量 水汽含量 长江流域 |
| 收稿时间： | 2011/6/7 0:00:00 |
Spatial-temporal variations of global solar radiation over the Yangtze River basin since 1960 |
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| LIU Changkun,WANG Yanjun and GUO Yuan.Spatial-temporal variations of global solar radiation over the Yangtze River basin since 1960[J].Journal of Nanjing Institute of Meteorology,2012,4(3):233-240. |
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| Authors: | LIU Changkun WANG Yanjun and GUO Yuan |
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| Institution: | School of Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044;School of Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044;School of Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044 |
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| Abstract: | Based on the meteorological data from 147 stations over the Yangtze River basin,climatology computational method was used to estimate global solar radiation.For a better understanding of spatial-temporal variations of global solar radiation over the Yangtze River basin since 1960,and the impact of the cloud cover and the atmospheric water vapour on the global solar radiation,linear regression and correlation analysis methods were used.The main results are as follows:Global solar radiation over the Yangtze River basin except for the Jinsha River basin decreases from east to west with fluctuant change in the upstream region and significant decrease in the downstream region.The decreasing trend in global solar radiation did not persist into the 1990s which coincided with the "global dimming" and "global brightening".The cloud cover and the atmospheric water vapour content are not the primary causes for the decrease in global solar radiation over the Yangtze River basin. |
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| Keywords: | global solar radiation spatial-temporal variations cloud cover atmospheric water vapour content the Yangtze River basin |
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