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下垫面对大连低层高空风速分布的影响
THE INFLUENCE OF THE SURFACE’S ROUGHNESS UPON THE WIND PROFILE IN THE UPPER PLANETARY BOUNDARY LAYER OVER DAIREN
【摘要】 本文利用大连1955年气球测风原始记录,根據11∶00和23∶00从海上来的风和从陆上来的风进行分类,得出四种情况下大连低层高空的风速随高度的分布.假定湍流系数K=(a-bz)~2,对不同情况 a,b 取适当的数值;并且考虑适当的热成风,则由理论算得的风速廓线和实现观测的平均风速分布相当符合.因此本文给出不同温度层结不同下热面影响下的风速分布以及湍流系数 K 随高度的改变情形.
【Abstract】 The wind data from free balloon at Dairen for the year 1955 are groupedinto four sets,namely:wind from sea at 11:00 and at 23:00;wind from landat 11:00 and at 23:00.By using the results obtained earlier by one of the au-thors,the calculated wind profile agrees with the observed wind distribution.Comparing the different distribution of the turbulent coefficient K withheight for the four conditions,the influences of the stability and the surface’sroughness on the wind profile are discussed.
- 【文献出处】 气象学报 ,Acta Meteorologica Sinica , 编辑部邮箱 ,1958年01期
- 【被引频次】3
- 【下载频次】68