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高原气象  2018, Vol. 37 Issue (1): 158-166    DOI: 10.7522/j.issn.1000-0534.2017.00008
论文     
新疆北部一次暖区暴雪过程锋面结构及中尺度云团分析
刘晶1,2, 李娜3, 陈春艳3
1. 中国气象局乌鲁木齐沙漠气象研究所, 新疆 乌鲁木齐 830002;
2. 中亚大气科学研究中心, 新疆 乌鲁木齐 830002;
3. 新疆气象台, 新疆 乌鲁木齐 830002
The Frontal Structure and Analysis on Mesoscale Cloud Characteristic during a Warm Zone Blizzard Process in North Xinjiang
LIU Jing1,2, LI Na3, CHEN Chunyan3
1. Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, Xinjiang, China;
2. Center for central Asia Atmosphere Science Research, Urumqi 830002, Xinjiang, China;
3. Xinjiang Meteorological Bureau, Urumqi 830002, Xinjiang, China
 全文: PDF(11165 KB)  
摘要: 通过对2014年1月29-30日北疆北部地区出现强降雪过程中常规资料、NCEP/NCAR 1°×1°再分析资料及卫星红外云图的分析研究。结果表明:(1)500 hPa极锋锋区偏西急流与中纬度西南急流交汇,锋区在巴尔喀什湖附近加强并东移进入北疆偏北地区,为此次暴雪天气的发生提供有利的环流形势;高低空急流耦合明显,在地形强迫和锋面抬升下垂直上升运动再次得到增强,是暴雪发生的有利动力抬升条件;(2)中低层暖锋锋生,锋区随高度向东北倾斜,暖湿气团强盛并沿底层冷楔爬坡,推动冷气团向北移动,暴雪区位于暖锋锋区前沿处;(3)巴湖附近带状云系中不断有中尺度云团生成、合并和消亡,暴雪区与中尺度云团边缘TBB等值线梯度大值区有较好的对应关系。
关键词: 暖区暴雪地面暖锋锋生中尺度云团    
Abstract: By used the ground meteorological observatory hourly rainfall, conventional detection, 1°×1° NCEP/NCAR reanalysis and hourly infrared cloud image data, the heavy snow process in northern Xinjiang during 29 to 30 January 2014 was analyzed. The results showed that:(1) 500 hPa west jet in polar front zone and southwest jet in mid-latitude were intersected, then strengthened near the Balkhash lake and east into the north region of northern Xinjiang, which provided the favorable circulation background for blizzard weather process; high and low air jet stream were coupled, low-level convergence and high-level divergence, the upward movement was enhanced again under the topographic forcing and frontal uplifting, which is favorable dynamic lifting condition to blizzard happened; (2) the warm front appeared frontogenesis in the low level, frontal zone was tilt to the northeast as height increasing, warm moist air masses strongly climbed along the bottom cold wedge, and push them moving to north. The blizzard area was situated in near front of the frontier; (3) mesoscale cloud was formatted, merged and died in the banded cloud near the Balkhash lake, and the blizzard area and greater value area of TBB contour gradient around mesoscale cloud edge has good relationship.
Key words: The warm zone snowfall    the warm front frontogenesis    mesoscale cloud cluster
收稿日期: 2016-09-20 出版日期: 2018-02-20
ZTFLH:  P441/1  
基金资助: 国家自然科学基金项目(41375070,41565003,41075050);中国沙漠气象科学研究基金项目(Sqj2016017)
通讯作者: 陈春艳.E-mail:chency357@sina.com     E-mail: chency357@sina.com
作者简介: 刘晶(1991-),女,河南扶沟人,助理研究员,主要从事灾害性天气研究.E-mail:994365768@qq.com
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刘晶, 李娜, 陈春艳. 新疆北部一次暖区暴雪过程锋面结构及中尺度云团分析[J]. 高原气象, 2018, 37(1): 158-166.

LIU Jing, LI Na, CHEN Chunyan. The Frontal Structure and Analysis on Mesoscale Cloud Characteristic during a Warm Zone Blizzard Process in North Xinjiang. PLATEAU METEOROLOGY, 2018, 37(1): 158-166.

链接本文:

http://www.gyqx.ac.cn/CN/10.7522/j.issn.1000-0534.2017.00008        http://www.gyqx.ac.cn/CN/Y2018/V37/I1/158

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