| 水平面上太阳辐射空间模拟对比研究 |
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| 引用本文： | 田永中,朱莉芬,岳天祥.水平面上太阳辐射空间模拟对比研究[J].地球信息科学,2005,7(4):95-100. |
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| 作者姓名： | 田永中 朱莉芬 岳天祥 |
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| 作者单位： | 1. 西南师范大学资源环境科学学院,重庆 400715;
2. 中国科学院地理科学与资源研究所,北京 100101;
3. 重庆市城市气象工程技术研究中心, 重庆 401147;
4. 中国科学院研究生院, 北京 100039 |
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| 摘 要： | 面域的太阳辐射数据是进行其他各项有关辐射研究的基础。由辐射台站的点数据来模拟太阳辐射的空间分布时,传统的模拟方式都会产生精度与效率之间的矛盾。直接以辐射观测值与其影响因子建立非线性回归模型,以各因子的面域数据来模拟水平面上太阳辐射的空间分布,与引入了辐射基数值的模式相比,模型的误差更小,复相关系数大于0．96,运算效率提高29-286倍。当采用模拟的天文辐射经验公式来计算辐射基数时效率仍可提高2-11倍。用两种方式的回归模型模拟中国1km栅格的水平面太阳辐射,平均差值仅2.41％,而本文模式模拟结果与实测值更为接近。
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| 关 键 词： | 太阳辐射 天文辐射 空间模拟 栅格 |
| 收稿时间： | 2004-07-10 |
| 修稿时间： | 2004-11-16 |
Comparative Study on Spatial Simulation of Solar Radiation on Level Surfaces |
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| TIAN Yongzhong,ZHU Lifen,YUE Tianxiang.Comparative Study on Spatial Simulation of Solar Radiation on Level Surfaces[J].Geo-information Science,2005,7(4):95-100. |
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| Authors: | TIAN Yongzhong ZHU Lifen YUE Tianxiang |
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| Institution: | 1. Institute of Resource and Environment Science, Southwest Normal University,Chongqing 400715, China;
2. Chongqiang urban meteorololgy engineering technology research center 401147;
3. Institute of Geographic Sciences and Natural Resources Research,CAS, Beijing 100101, China;
4. Graduate School of Chinese Academy of Sciences , Beijing 100039, China |
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| Abstract: | The traditional modes usually cause the conflict between precision and efficiency when simulating the spatial distribution of solar radiation on level surface. A new mode was brought forward which builds non-linear regression model directly between observed solar radiation and its influencing factors. Comparing the traditional mode with base radiation, its errors are minor and calculation is 29-289 times faster. Stepwise regression model of the two modes are used to simulate the solar radiation in lkm grid-cells of China, the results show that their average difference is 2.41%, and the outcome of the new model is more approximate to the actual data. An experiential model was also built to simulate extraterrestrial radiation on level surface, which made the calculation 27 times faster than that of the theoretic model with almost the same outcome. |
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| Keywords: | solar radiation extraterrestrial radiation spatial simulation grid |
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