永定河流域太阳辐射逐时过程模拟
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P422

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国家重点研发计划资助项目(2018YFB1600400);水体污染控制与治理科技重大专项(2018ZX07111-002);青海大学三江源生态与高原农牧业国家重点实验室重点开放基金(2016-KF-01)第一作者:孙先忍(1992-)男,土家族,重庆人,硕士研究生,研究方向:水质与生态模拟。E-mail:sunxren@163.com。*通信作者:黄国鲜(1975-)男,侗族,研究员,主要从事流域和生态环境过程及能源模型研究。 E-mail: huanggx@craes.org.cn


Simulation on hourly process of solar radiation in Yongding River Basin
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    摘要:

    针对太阳辐射在不同区域地形条件下的差异,通过建立任意倾角和坡面方位角下的太阳辐射逐时模型,模拟了永定河流域1951-2018年的太阳辐射,并分析了该流域太阳辐射在不同倾角和坡面方位角下的变化特征。结果表明:永定河流域1951-2018逐年太阳辐射总体呈现减小趋势。任意倾角下,同一站点太阳辐射时变化形态基本一致,均呈抛物线型,不同站点太阳辐射峰值受地理纬度及海拔影响较大。任意坡面方位角下,太阳辐射沿流域中心向东西两向逐渐减少并呈对称分布。太阳辐射年内具有明显的月度变化特征,1~3月、10~12月太阳辐射受倾角和坡面方位角影响较4~9月大。该研究成果对量化太阳辐射、研究流域能量收支及分析陆面蒸发过程等方面具有一定的参考意义。

    Abstract:

    Focusing on the difference of solar radiation in different regions and topographical conditions, an hourly calculation model of solar radiation at arbitrary direction and inclination angle is established. Using the solar radiation model, the total radiation of 1951-2018 in Yongding River Basin is calculated, and its hourly variation characteristics at arbitrary inclination and direction angles are analyzed. The results show that the annual solar radiation decreased in the Yongding river basin from 1951 to 2018. The changing pattern of daily solar radiation is similar at any inclination angle with a parabolic pattern, and the peak value is mainly affected by geographical latitude and altitude. The distribution of solar radiation is symmetrical and decreasing along the east and west directions at arbitrary slope azimuth, taking the center of the basin. Obvious monthly variations at arbitrary inclination azimuth is shown in the solar radiation which has larger fluctuation in the period of January to March and October to December than in April to September. This paper can provide basic reference for quantifying energy budget, utilizing solar energy and analyzing evaporation process in land surface.

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孙先忍,黄国鲜,童思陈,等. 永定河流域太阳辐射逐时过程模拟[J]. 科学技术与工程, 2021, 21(3): 892-898.
Sun Xianren, Huang Guoxian, Tong Sichen, et al. Simulation on hourly process of solar radiation in Yongding River Basin[J]. Science Technology and Engineering,2021,21(3):892-898.

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  • 收稿日期:2020-05-14
  • 最后修改日期:2020-10-23
  • 录用日期:2020-07-04
  • 在线发布日期: 2021-02-09
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