The Change of Solar Radiation and Its Causes inHaihe River Basin and Surrounding Areas

  • 1. Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China;
    2. College of Resources and Environment,Beijing Normal University,Beijing 100875,China;
    3. Graduate University of Chinese Academy of Sciences,Beijing 100049,China;
    4. Jiangsu Institute of Meteorological Sciences; Nanjing 210008,China

Received date: 2009-07-10

  Revised date: 2009-09-02

  Online published: 2009-11-25


Solar radiation is a key factor in most climate processes. In surface hydrology, it controls the energy balance of the catchment, thus deeply influences the water balance. In this paper, the temporal and spatial variations of solar radiation and the cause of the variation have been analyzed based on meteorological data obtained from 46 national meteorological stations and aerosol index data from TOMS in the Haihe River Basin and surrounding areas. The results show that solar radiation and direct radiation significantly decreased, while the scatter radiation increased during the period 1957-2008. In terms of solar radiation, the densely populated areas have a greater decreasing trend than the scarcely populated ones. The spatial distribution of the increase in aerosol index is consistent with that of the decrease in aerosol index. The increase in aerosol resulting from human activities is the important reason for the decrease in solar radiation.

Cite this article

LIU Chang-ming,LIU Xiao-mang,ZHENG Hong-xing,ZENG Yan . The Change of Solar Radiation and Its Causes inHaihe River Basin and Surrounding Areas[J]. Acta Geographica Sinica, 2009 , 64(11) : 1283 -1291 . DOI: 10.11821/xb200911001


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