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气象:2021,47(6):746-754
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复杂地形下太阳总辐射空间订正方法——以四川省为例
王传辉,申彦波
(安徽省公共气象服务中心,合肥 230031; 中国气象局公共气象服务中心,北京 100081)
Spatial Correction of Global Horizontal Irradiation Under Complex Terrain—As a Case Study in Sichuan Province
WANG Chuanhui,SHEN Yanbo
(Anhui Public Meteorological Service Center, Hefei 230031; CMA Public Meteorological Service Centre, Beijing 100081)
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投稿时间:2020-08-20    修订日期:2021-03-04
中文摘要: 利用四川省158个气象站2016—2019年逐小时2 m气温、相对湿度、地面气压、能见度等观测数据,通过SMARTS模式计算并积分得到逐月晴天太阳总辐射,建立晴天太阳总辐射随海拔高度的变化关系,将该关系应用到1990—2019年太阳总辐射空间插值订正中,并对订正效果进行验证,结果表明:晴天太阳总辐射随海拔高度呈对数增加,海拔越高晴天太阳总辐射随高度增幅越小;辐射订正方面,海拔较低、地势平坦的四川盆地地区订正幅度最小,高海拔的川西高原订正幅度居中,高低海拔过渡地带订正幅度最大;交叉验证结果表明,用来验证的7个辐射站年平均绝对误差由182.77 kW·h·m-2减少到145.48 kW·h·m-2,相对误差由13.41%减少到10.24%,冬半年订正效果好于夏半年。通过订正可有效提高复杂地形下太阳总辐射插值效果,减小插值误差。
Abstract:Based on the hourly 2 m temperature, relative humidity, surface pressure and visibility data of 158 stations in Sichuan Province during the period 1967-2008, the monthly sunny global horizontal irradiation (GHI) was calculated and integrated by using simple model for atmospheric transmission of sunshine (SMARTS). The relationship between sunny GHI and altitude was established, which was applied to the correction of GHI interpolation during the period 1990-2019, and the correction effect was verified. The results show that the sunny GHI increases logarithmically with altitude, and the higher the altitude is, the smaller the increase of sunny GHI with altitude becomes. In terms of radiation correction, the correction range of Sichuan Basin with low altitude and flat terrain is the smallest, the high-altitude plateau in western Sichuan is in the middle, the transition zone between high and low altitudes is the largest. The results of cross validation show that the annual mean absolute error of the seven stations is reduced from 182.77 kW·h·m-2 to 145.48 kW·h·m-2, while the relative error is reduced from 13.41% to 10.24%.
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基金项目:第二次青藏高原综合科学考察研究项目(2019QZKK0804)资助
引用文本:
王传辉,申彦波,2021.复杂地形下太阳总辐射空间订正方法——以四川省为例[J].气象,47(6):746-754.
WANG Chuanhui,SHEN Yanbo,2021.Spatial Correction of Global Horizontal Irradiation Under Complex Terrain—As a Case Study in Sichuan Province[J].Meteor Mon,47(6):746-754.