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JOURNAL OF DESERT RESEARCH  2012, Vol. 32 Issue (6): 1716-1722    DOI:
Weather and Climate     
Characteristics of Surface-Layer Turbulence Spectra over the Taklimakan Desert Hinterland
WEN Ya-ting1,2, JIAO Bing2, MIAO Qi-long3, ZHANG Li-biao2, HE Qing1
1.Urumqi Institute of Desert Meteorology; China Meteorological Administration; Urumqi 830002; China;
2.PLA University of Science and Technology, Nanjing, 211101, China;
3.MOE Key Laboratory of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing 210044, China
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Abstract  

In different atmospheric stable stratification condition, the turbulence spectral characteristics were calculated and analyzed according to the data obtained at the height of 10 meters over the Taklimakan Desert hinterland. Results indicated that velocity and temperature spectra followed the -2/3 law in the higher frequency while the correlation were closer under the stable atmosphere condition than unstable. The velocity spectra fit lower frequency limit for isotropy. It was found that "v" spectra at the stable, "u" spectra and "T" spectra at near neutral were tail upwarping in low-frequency while velocity spectra at the weak unstable and "T" spectra at near neutral were the same phenomena in high-frequency. The values of horizontal peak wavelength in desert hinterland were between the value in forest and in grassland, the peak frequency values were lower under the unstable condition.

Key words:  Taklimakan Desert      desert hinterland      turbulent spectra      local isotropy     
Received:  18 April 2012      Published:  23 May 2012
ZTFLH:  P425.2  

Cite this article: 

WEN Ya-ting1,2, JIAO Bing2, MIAO Qi-long3, ZHANG Li-biao2, HE Qing1. Characteristics of Surface-Layer Turbulence Spectra over the Taklimakan Desert Hinterland. JOURNAL OF DESERT RESEARCH, 2012, 32(6): 1716-1722.

URL: 

http://www.desert.ac.cn/EN/     OR     http://www.desert.ac.cn/EN/Y2012/V32/I6/1716

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