Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Research of Urbanization on Surface Roughness with 255m Meteorological Tower

Han Suqin Liu Binxian Xie Yiyang Bian Hai(Tianjin Meteorological Institute,300074)  
Based on the data obtained from the Tianjin 255m meteorological tower in recent 10 years,the surface roughness was estimated by using logarithmic wind profile under the condition of neutral stratification.The results show that the surface roughness is increasing with the development of the urbanization in recent decades.The increased amplitude of the surface roughness over urban land surface is not the same in different azimuth,which is accorded with the urban construction speed.At the same time,the effect of urbanization on the urban wind field structure was studied.It shows that wind direction especially near the ground is affected most,and the wind speed,especially near the ground,decreased year by year.The thickness of urban canopy increased 10 m during the last 10 years,and now is between 40~60m.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved