戈壁光伏电站下垫面陆面参数特征  

Characteristics of Land Surface Parameters of the Underlying Surface of Gobi Photovoltaic Power Station

作　　者：赵延岩 应江 李振朝 高晓清 杨佳希 罗勇[4] ZHAO Yanyan;YING Jiang;LI Zhenchao;GAO Xiaoqing;YANG Jiaxi;LUO Yong(Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,Gansu,China;University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Urban Meteorology,CMA,Beijing 100089,China;Department of Earth System Science,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国科学院西北生态环境资源研究院寒旱区陆面过程与气候变化重点实验室,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]北京城市气象研究院,北京100089 [4]清华大学地球系统科学系,北京100084

出　　处：《高原气象》2022年第4期988-995,共8页Plateau Meteorology

基　　金：国家自然科学基金项目(41875017);国家重点研发计划项目(2018YFB1502800)。

摘　　要：光伏电站的建设和运行改变了原本自然下垫面的表面特征,这可能会引起地表反照率、地表粗糙度等陆面过程因子的变化,影响下垫面物质交换与能量分配特征。为了研究戈壁光伏电站的建设对下垫面陆面参数的影响,完善陆面过程模式,本文利用新疆五家渠戈壁光伏电站与参考站点的观测资料,研究了光伏电站下垫面的陆面参数特征,结果显示:利用2020年7-10月观测数据,得到光伏电站内的空气动力学粗糙度平均值为0.12 m,远大于自然戈壁下垫面的粗糙度。光伏电站内白天摩擦速度和动量通量大于参考站点,在日变化中的最大值分别增大18.8%和38.5%。光伏电站内垂直湍流混合作用得到增强,相比参考站点增加22.2%,而横向和纵向的湍流强度分别减弱11.8%和2.9%;利用2020年10月土壤数据,得到光伏电站内5~20 cm深度的平均土壤热传导率为0.33 W·(m·K)^(-1)。The construction and operation of photovoltaic(PV)power stations have changed the surface characteristics of the natural underlying surface,which may cause changes in land surface process factors such as surface albedo and surface roughness,affecting the characteristics of material exchange and energy distribution.In order to explore the influence of the construction of Gobi photovoltaic power station on the underlying land surface parameters and improve the land surface process model,this paper studied the characteristics of the underlying land surface parameters of the photovoltaic power station based on the observation data of the photovoltaic power station and reference stations in Wujiaqu.The results showed that the average aerodynamic roughness inside the PV plant is 0.12 m,which is much larger than the roughness of the natural Gobi underlying surface.During the daytime,the friction velocity and momentum flux inside the PV plant are larger than those at the reference site,with the maximum values in the daily variation increased by 18.8%and 38.5%,respectively.The vertical turbulent mixing in the PV plant increased by 22.2%compared to the reference site,while the latitudinal and longitudinal turbulence intensity decreased by 11.8%and 2.9%,respectively.The average soil thermal conductivity of 5~20 cm depth in photovoltaic power station is 0.33 W·(m·K)^(-1).

关 键 词：光伏电站 戈壁 陆面参数 

分 类 号：P404[天文地球—大气科学及气象学]