Plateau Meteorology

Plateau Meteorology >

2014 , Vol. 33 >Issue 4: 977 - 987

DOI: https://doi.org/10.7522/j.issn.1000-0534.2013.00158

Analysis of Cloud Vertical Structure over Western China Based on Active Satellite Data

  • YE Peilong ,
  • WANG Tianhe ,
  • SHANG Kezheng ,
  • Lü Qiaoyi ,
  • WANG Shigong ,
  • LI Jingxin
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  • Key Laboratory of Semi-Arid Climate Change of the Ministry of Education/College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China

Received date: 2013-05-09

  Online published: 2014-08-28

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Abstract

Cloud vertical structure over western China and its neighborhood was analyzed using the 2B-CLDCLASS-LIDAR data of CloudSat/CALIPSO during the period from March 2007 to February 2008. The results show that the occurrence frequency of single-layer cloud is greater than multi-layer cloud over the whole region, multi-layer cloud occurrence frequency for Tianshan Mountains and the middle-west of Qilian Mountains is higher than the surrounding area throughout the year. Cloud top and base heights of all clouds change apparently with the seasons and regions, and the seasonal variation of cloud top height is more significant than cloud base height. The cloud height of each layer has no remarkable seasonal variation in Northwest region, however, the significantly distinct in Qinghai-Xizang Plateau. The average of cloud thickness is greater than 2 km for single-layer cloud and ranges from 1 km to 2 km for double-layer and three-layer clouds. The vertical distance of double-layer clouds is greater than other consecutive layers, and the seasonal variation of consecutive layers in Qinghai-Xizang Plateau is more significant than Northwest region. The occurrence frequency of ice phase cloud in summer over the south slope of Qinghai-Xizang Plateau is greater than other seasons. However, more ice clouds over other regions are present in winter and spring. Apart from the south slope of Qinghai-Xizang Plateau, the occurrence frequency of ice cloud in winter is greater than 80% for other regions.

Key words： CloudSat/CALIPSO; Northwestern China; Qinghai-Xizang Plate; Cloud vertical struc

Cite this article

YE Peilong , WANG Tianhe , SHANG Kezheng , Lü Qiaoyi , WANG Shigong , LI Jingxin . Analysis of Cloud Vertical Structure over Western China Based on Active Satellite Data[J]. Plateau Meteorology, 2014 , 33(4) : 977 -987 . DOI: 10.7522/j.issn.1000-0534.2013.00158

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