| 中国地面太阳辐射季节异常与主要大气环流指数的关联分析 |
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| 引用本文： | 李爽,肖子牛,丁煌,李朝晖.中国地面太阳辐射季节异常与主要大气环流指数的关联分析[J].气候与环境研究,2022,27(4):447-457. |
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| 作者姓名： | 李爽 肖子牛 丁煌 李朝晖 |
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| 作者单位： | 1.中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室，北京1000292.中国科学院大学，北京 1000493.中国电力科学研究院有限公司，南京 2100034.国网河南省电力公司，郑州450052 |
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| 基金项目： | 国家电网有限公司总部科技项目NY71-19-013 |
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| 摘 要： | 利用1989～2018年ERA5地面太阳辐射资料，分析了不同季节主要大气环流特征指数与中国地面太阳辐射异常的关系。结果表明:（1）在春季，东亚槽位置对中国中东部大面积的地面太阳辐射异常有一致性的影响，其位置偏东时，地面太阳辐射异常显著偏少。冬季风强度和ENSO（El Ni?o–Southern Oscillation）分别对长江流域南北、中国南方东部和西部有反位相的影响。（2）夏季的影响因子比较复杂，NAO（North Atlantic Oscillation）和夏季风是两个较主要的影响因子，NAO对中国北方较多地区的地面太阳辐射异常的影响较为显著，而夏季风主要与江淮地区的地面太阳辐射异常相关联。当NAO指数偏大（小）时，北方大部分地区地面太阳辐射异常偏少（多）。当夏季风偏强（弱）时，江淮流域的地面太阳辐射异常显著偏少（多）。（3）在秋季，地面太阳辐射异常主要受到东亚槽位置、冬季风和NAO的影响，冬季风和东亚槽主要影响北方地区，当东亚槽偏西或冬季风偏强时，中国北方除东北地区外的大部分地区地面太阳辐射偏多。NAO主要与中国西部的地面太阳辐射异常关联，当NAO指数偏大时，西部地区北方地面太阳辐射异常偏少而南方大部分地区偏多。（4）在冬季，ENSO和冬季风是较重要的影响因子，但其显著影响区域并不对称。在ENSO负位相或冬季风较强时，中国北方大部分地区的地面太阳辐射异常显著偏多，而ENSO正位相或冬季风较弱最有利于中国南方地面太阳辐射异常偏少，但显著影响范围较小。
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| 关 键 词： | 地面太阳辐射 影响因子 各个季节 |
| 收稿时间： | 2021-02-19 |
Association Analysis on the Seasonal Surface Solar Radiation Anomaly in China and Major Atmospheric Circulation Indices |
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| Shuang LI,Ziniu XIAO,Huang DING,Zhaohui LI.Association Analysis on the Seasonal Surface Solar Radiation Anomaly in China and Major Atmospheric Circulation Indices[J].Climatic and Environmental Research,2022,27(4):447-457. |
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| Authors: | Shuang LI Ziniu XIAO Huang DING Zhaohui LI |
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| Institution: | 1.State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 1000292.University of Chinese Academy of Sciences, Beijing 1000493.China Electric Power Research Institute, Nanjing 2100034.Electric Power Research Institute of State Grid Henan Electric Power Company, Zhengzhou 450052 |
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| Abstract: | The association between the seasonal major atmospheric circulation indices and the surface solar radiation anomaly (SSRA) in China is investigated using ERA5 SSR downwards data from 1989 to 2018. The results show that (1) in spring, the location of the East Asian trough has a consistent influence on the SSRA in the large areas of central-eastern China, and the SSRA is significantly less when the location of the East Asian trough is eastward. The intensity of the East Asian winter monsoon affects the SSRA inversely in the southern and northern Yangtze river basins, whereas El Ni?o–Southern Oscillation (ENSO) affects the SSRA inversely in the eastern and western parts of south China. (2) In summer, the influencing factors are complicated. The North Atlantic Oscillation (NAO) and summer monsoon are important. The NAO has a significant influence on the SSRA in many parts of north China, and the summer monsoon is associated with the SSRA in the Yangtze–Huaihe River basin. When the NAO index is higher (lower), the SSRA in large parts of north China is less (more). When the summer monsoon index is higher (lower), the SSRA in the Yangtze–Huaihe River basin is significantly less (more). (3) In autumn, the SSRA is connected with the location of the East Asian trough, winter monsoon, and NAO. The SSRA in north China is primarily influenced by the winter monsoon and the location of the East Asian trough. The SSRA in large parts of north China except for Northeast China appears more when accompanied by the western East Asian trough or strong winter monsoon. Moreover, when associated with the SSRA in western China, the higher NAO index can lead to less SSRA in the northern part of western China and more SSRA in the large southern parts of western China. (4) In addition, ENSO and winter monsoon are two important factors affecting the SSRA in winter, but their significant influencing areas are asymmetric. Negative ENSO phases or intense winter monsoon can cause more SSRA significantly in most parts of northern China, and positive ENSO phases or weak winter monsoon are most favorable to the less SSRA in southern China, but on a small significant scale. |
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