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

中文摘要:

      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.

英文摘要:

      The wind data from free balloon at Dairen for the year 1955 are grouped into four sets, namely:wind from sea at 11:00 and at 23:00;wind from land at 11:00 and at 23:00. By using the results obtained earlier by one of the authors, the calculated wind profile agrees with the observed wind distribution.Comparing the different distribution of the turbulent coefficient K with height for the four conditions, the influences of the stability and the surface's roughness on the wind profile are discussed.