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青藏高原大气边界层湍流特征量分析
引用本文:苗曼倩,季劲钧.青藏高原大气边界层湍流特征量分析[J].高原气象,1998,17(4):356-363.
作者姓名:苗曼倩  季劲钧
作者单位:[1]南京大学大气科学系 [2]中国科学院大气物理研究所
基金项目:国家“九五”攀登计划预选项目
摘    要:采用1979年青藏高原气象科学实验资料,研究高原陆面上总体湍流送系数CD和CH的特征及边界层高度受高原地形的影响。结果表明用廓线法计算的高原上局地的CD和CH值比同样粗糙度长度条件下平原地区的值大得多,而且日较差也大于平原地区。

关 键 词:总体输送系数  青藏高原  大气边界层  端流  特征量

ANALYSIS OF TURBULENT CHARACTERISTICS IN ATMOSPHERIC BOUNDARY LAYER OVER THE QINGHAI-XIZANG PLATEAU
MIAO Man-qian,CAO Hong,JI Jing-jun.ANALYSIS OF TURBULENT CHARACTERISTICS IN ATMOSPHERIC BOUNDARY LAYER OVER THE QINGHAI-XIZANG PLATEAU[J].Plateau Meteorology,1998,17(4):356-363.
Authors:MIAO Man-qian  CAO Hong  JI Jing-jun
Institution:MIAO Man-qian 1 CAO Hong 1 JI Jing-jun 2
Abstract:The meteorological exploration data collected from the Qinghai-Xizang Plateau are used to analyse the variation of bulk transport coefficient C D and C H. The results show that the values of C D and C H are much higher on the Plateau than those on plain area, and the daily ranges are also higher, while the dynamical roughness lengths are almost the same. The main reason seems that the Qinghai-Xizang Plateau is located in inland, large variation of air temperature caused strong daily variation of atmospheric stratification. Secondly, complicated terrain enhances mechanical turbulent movement. The boundary layer height over the Qinghai-Xizang Plateau is also higher than that on plains.
Keywords:Bulk transport coefficient  The Qinghai-Xizang Plateau  Boundary layer height
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