不同下垫面条件下风随高度的变化特征  

Variation Characteristics of Wind with Height under Different Underlying Surface Conditions

作　　者：刘焕彬 董旭光 

机构地区：[1]山东省气候中心,山东 济南

出　　处：《自然科学》2021年第1期1-9,共9页Open Journal of Nature Science

摘　　要：选取山东省威海海上、昌邑下营、海阳里口三座70 m高度测风塔连续一整年的观测数据,采用最小二乘法拟合等方法,对不同下垫面条件下风随高度的变化特征进行了分析。结果表明:三座测风塔风速随高度的变化有着显著差异,位于山区的里口测风塔风随高度变化最复杂,风切变指数最大,下营测风塔次之,海上测风塔风随高度变化相对最不明显,风切变指数最小,大风情况下,陆上测风塔风切变指数显著减小,但海上测风塔风切变指数变化不大。Variations on wind speed with height under land and offshore terrain conditions were analyzed by selecting the observed wind tower data of a whole year in offshore of Weihai, Xiaying of Changyi and Likou of Haiyang and using the least-squares fitting method. Results showed that variations on wind speed with height of the three wind tower have significant difference. Variations on wind speed with height of Likou wind tower was the complicated and wind shear index was maximum, followed by Xiaying wind tower, and variations on wind speed with height of offshore wind tower were not obvious and wind shear index was minimum. Wind shear index of land wind tower obviously decreased under strong wind conditions, but that of offshore wind tower little changed.

关 键 词：风切变指数 测风塔 湍流交换 

分 类 号：TS2[轻工技术与工程—食品科学与工程]