Spectral Characteristics of Atmospheric Turbulence over Various Surface ConditionsChinese Full Text
LIU Mingxing1,ZHANG Hongsheng1,SONG Xingzhuo1,KANG Ling2,CHEN Jiayi11Department of Atmospheric Science,Peking University,Center of Sino-Korean Atmospheric Science,Beijing 100871;2College of Environmental Sciences and Engineering,Peking University,Beijing 100871
Abstract: A comprehensive study of spectral characteristics of atmospheric turbulence over different surface conditions,including the Gobi desert,grassland,suburban and urban area,outskirts was carried out.The turbulent data were collected by the same personnel,sound instrumentation,turbulent data acquisition system and turbulent processing system.Results show that the lower frequency portion of temperature and humidity spectra reveals a flatter peak than that at the upper level of urban area.Spectra curves do not reveal a regular changing tendency according to their stability conditions,but converge to a very narrow bend in both the lower and higher frequency portions.The value of humidity spectra in low-frequency in Gobi is higher than that in other sites.The humidity characteristics are similar with temperature in humid regions.
- DOI：
10.13209/j.0479-8023.2008.062
- Series：
- Subject：
- Classification Code：
P434
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