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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (6): 1858-1865    DOI: 10.7522/j.issn.1000-694X.2013.00248
Weather and Climate     
An Observation and Analysis of Atmospheric Boundary Layer  in Spring at Semi-arid Desert Plain in Inner Mongolia, China
NIU Sheng-jie1, L Jing-jing1,YUE Ping2
1.Jiangsu Key Laboratory of Atmospheric Environment Monitoring & Pollution Control/School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China; 2.Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China
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Abstract  

The structure characteristics and variations of atmosphere boundary layer in a typical clear day over semi-arid desertification grassland were analyzed by using the sounding data, which involve the wind, air temperature and humidity in Erenhot station on April 24, 2006. At the same time, the boundary layer height and its daily changes over Zhurihe station were analyzed by using the meteorological service lidar echo signal and the aerosol extinction coefficients. The results show that the mean value of the atmosphere boundary layer thickness over semi-arid region in North China is high. The maximum thickness of the atmosphere boundary layer over Erenhot is about 2 300 m, the stable atmosphere boundary layer thickness is about 300 m. The turning height of wind direction is at about 1 000 m. The wind was easterly in lower layers but westerly in upper layers. The low-level east jet appears from afternoon to later at night, its intensity is close to 12 m\5s-1 and its height is about 300 m. The humidity inversion is at about 600 m and it appears mainly in the evening. The meteorological service lidar observation data show that the highest thickness of atmosphere boundary layer over Zhurihe is about 2 400 m and it appears at 16 oclock or so.

Key words:  atmosphere boundary layer      low-level jet      atmospheric humidity inversion      Laser radar     
Received:  29 October 2012      Published:  10 December 2012
ZTFLH:  P404  
Articles by authors
NIU Sheng-jie1
LV Jing-jing1
YUE Ping2

Cite this article: 

NIU Sheng-jie1, LV Jing-jing1,YUE Ping2. An Observation and Analysis of Atmospheric Boundary Layer  in Spring at Semi-arid Desert Plain in Inner Mongolia, China. JOURNAL OF DESERT RESEARCH, 2013, 33(6): 1858-1865.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00248     OR     http://www.desert.ac.cn/EN/Y2013/V33/I6/1858

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