Plateau Meteorology

Plateau Meteorology >

2018 , Vol. 37 >Issue 3: 675 - 685

DOI: https://doi.org/10.7522/j.issn.1000-0534.2017.00061

Characteristics of Short-time Heavy Precipitation Weather Flow and Environmental Parameter of Altay Region in Xinjiang

  • ZHUANG Xiaocui ,
  • ZHAO Jiangwei ,
  • LI Boyuan ,
  • LI Jianli ,
  • XIE Xiuqin
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  • Institut of Desert Meteorology of China Meteorological Administration, Urumqi 830002, Xinjiang, China;Xinjiang of Aletai Meteorological Bureau, Aletai 836500, Xinjiang, China

Received date: 2017-06-27

  Online published: 2018-06-28

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Abstract

In order to understand the characteristics of short-time heavy precipitation(≥ 10 mm·s-1) in Altay of north Xinjiang, using automatic weather stations, common and EC fine grids and so on in Altay region, The environmental flow patterns, T-logP chart, and key physical parameters from 45 times of short-time heavy precipitation during 2010-2016 were analyzed, and then compared the area with the eastern part of China. The result shows that the short-time heavy precipitation was caused largely by front type of central Asia trough and vortex and the low trough (vortex) type of West Siberia. The first two occur most in June and the latter one most in July, and we extracted the flow pattern configurations of different weather patterns. In most processes, the profile of temperature and humidity looks like a funnel on T-logP chart, the upper part is dry and cold, and the lower part is warm and humid; the water vapor troposphere is better in middle low layer; CAPE shows a thin and weak spindle shape; Uplift condensation height is lower. In this area, average and threshold value of the key environmental parameters of the main weather types were summarized before short-time heavy precipitation, most environmental parameter thresholds are smaller than the central and eastern part of China, which shows that the region is more conducive to trigger short-time heavy precipitation than central and eastern regions of China.

Key words： Altay region; short-time heavy rai; weather flow configu; key environmental pa

Cite this article

ZHUANG Xiaocui , ZHAO Jiangwei , LI Boyuan , LI Jianli , XIE Xiuqin . Characteristics of Short-time Heavy Precipitation Weather Flow and Environmental Parameter of Altay Region in Xinjiang[J]. Plateau Meteorology, 2018 , 37(3) : 675 -685 . DOI: 10.7522/j.issn.1000-0534.2017.00061

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