Value-Added Products Derived from 15 Years of High-Quality Surface Solar Radiation Measurements at Xianghe,a Suburban Site in the North China Plain  

作　　者：Mengqi LIU Xuehua FAN Xiang'ao XIA Jinqiang ZHANG Jun LI 

机构地区：[1]Key Laboratory of Atmospheric Sounding,Chengdu University of Information Technology,Chengdu 610225,China [2]LAGEO,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [3]Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science&Technology,Nanjing 210044,China [4]College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Advances in Atmospheric Sciences》2023年第6期1132-1141,共10页大气科学进展（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 42030608, 41875183 and 41805021);the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA17040511);the National Key R&D Program of China (Grant No. 2017YFA0603504);the Sichuan Department of Science and Technology (Grant Nos. 2022NSFSC1074, and 2023NSFSC0995);the Key Grant Project of Science and Technology Innovation Ability Enhancement Program of CUIT (Grant No. KYQN202217)。

摘　　要：Surface solar radiation(SSR) is a key component of the energy budget of the Earth’s surface, and it varies at different spatial and temporal scales. Considerable knowledge of how and why SSR varies is crucial to a better understanding of climate change, which surely requires long-term measurements of high quality. The objective of this study is to introduce a value-added SSR dataset from Oct 2004 to Oct 2019 based on measurements taken at Xianghe, a suburban site in the North China Plain;two value-added products based on the 1-minute SSR measurements are developed. The first is clear sky detection by using a machine learning model. The second is cloud fraction estimation derived from an effective semiempirical method. A “brightening” of global horizontal irradiance(GHI) was revealed and found to occur under both clear and cloudy conditions. This could likely be attributed to a reduction in aerosol loading and cloud fraction. This dataset could not only improve our knowledge of the variability and trend of SSR in the North China Plain, but also be beneficial for solar energy assessment and forecasting.

关 键 词：surface solar radiation clear sky detection cloud fraction North China Plain 

分 类 号：P461[天文地球—大气科学及气象学]