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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (1): 195-204    DOI: 10.7522/j.issn.1000-694X.2013.00028
Weather and Climate     
A Potential Vorticity Analysis on the Occurrence Mechanism of a Strong Sandstorm in Northern China on April 28-29, 2011
YIN Xian-zhi1,2, REN Yu-long2, MA Xu-jie3, LI Wen-li3, XU Dong-bei3, YANG Zi-he2
1.Institute of Arid Meteorology, CMA, Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province, Lanzhou 730020, China;
2.Linxia Meteorological Bureau, Linxia 731100, China;
3.Lanzhou Regional Central Meteorological Observatory, Gansu, Lanzhou 730020, China
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Abstract  

The occurrence mechanism of a strong sandstorm happened in northern China during April 28-29, 2011 was analyzed with PV theory using the  observed data and the NCEP recalculated data. The results showed that, the strong 500 hPa tilted trough was the main weather system that caused the sandstorm, while  the low level warm high over Qinghai Plateau and Xinjiang province provided an instable condition beneficial to the sandstorm occurrence. This storm mainly occurred behind of the cold frontal surface. The surface three-hour air pressure variation had an obvious indication to the moving route of the sandstorm. The values of the CAPE increased before the occurrence of the sandstorm. This was beneficial to formaninstable condition. The 500 hPa PV had an obvious indication to the weather system and the 0.5 PVU contour could be regarded as a threshold of the sandstorm occurrence. The sandstorm occurred with the expansion of the cold air in high latitude to low latitude. The slowing-down of the high-value PV system to the low level enlarged the slope of the isentropic surface but did not change the PV conservation. This may result in the developing of the cyclonic circulation on the ground surface and the growing of wind, and finally induced the outbreak of the strong sandstorm.

Key words:  sandstorm      developing process      potential vorticity     
Received:  10 May 2012      Published:  20 January 2013
ZTFLH:  P445.4  

Cite this article: 

YIN Xian-zhi1,2, REN Yu-long2, MA Xu-jie3, LI Wen-li3, XU Dong-bei3, YANG Zi-he2. A Potential Vorticity Analysis on the Occurrence Mechanism of a Strong Sandstorm in Northern China on April 28-29, 2011. JOURNAL OF DESERT RESEARCH, 2013, 33(1): 195-204.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00028     OR     http://www.desert.ac.cn/EN/Y2013/V33/I1/195

[1]Shao Y.A model for mineral dust emission[J].Journal of Geophysical Research,2001,106(D17):20239-20254.



[2]张平,杨德保,尚可政,等.2002年春季中国沙尘天气与物理量场的相关分析[J].中国沙漠,2003,23(6):675-680.



[3]康凤琴,李耀辉,吕世华.2001年4月8日强沙尘暴天气的数值模拟研究[J].中国沙漠,2003,23(6):681-685.



[4]矫梅燕,牛若芸,赵琳娜,等.沙尘天气影响因子的对比分析[J].中国沙漠,2004,24(6):696-700.



[5]石广玉,赵思雄.沙尘暴研究中的若干科学问题[J].大气科学,2003,27(4):591-606.



[6]钱正安,胡隐樵,龚乃虎.“93.5.5”特强沙尘暴的调查报告及其分析[M]//方宗义.中国沙尘暴研究.北京:气象出版社,1977:37-43.



[7]王式功,杨得宝,金炯.我国西部地区黑风暴的成因和对策[J].中国沙漠,1995,15(1):19-20.



[8]张强,王胜.论特强沙尘暴(黑风)的物理特征及其气候效应[J].中国沙漠,2005,25(5):675-681.



[9]刘宁微,马雁军,刘晓梅.蒙古气旋引发辽宁沙尘暴天气过程的数值模拟[J].中国沙漠,2011,31(1):217-222.



[10]赵金霞,赵玉洁.蒙古气旋产生强沙尘暴的诊断分析[J].中国沙漠,2011,31(5):1309-1315.



[11]王澄海,靳双龙.新疆“2.28”大风过程中热、动力作用的模拟分析[J].中国沙漠,2011,31(2):511-516.



[12]王存忠,牛生杰.中国50 a来沙尘暴变化特征[J].中国沙漠,2010,30(4):933-939.



[13]冯鑫媛,王式功.中国北方中西部沙尘暴气候特征[J].中国沙漠,2010,30(2):394-399.



[14]马禹,王旭,肖开提,等.天山北麓一例黑风暴天气的成因[J].北京大学学报(自然科学版),2006,42(3):343-350.



[15]王雷.一次冷空气强风的成因分析[J].海洋预报,2005,22(4):96-101.



[16]杨晓玲,丁文魁,钱莉,等.一次区域性大风沙尘暴天气成因分析[J].中国沙漠,2005,25(5):702-705.



[17]姜学恭,沈建国,刘景涛,等.导致一例强沙尘暴的若干天气因素的观测和模拟研究[J].气象学报,2003,61(5):606-620.



[18]吕梅,濮江平.2000年两次沙尘暴天气过程的分析研究[J].气象科学,2002,22(2):210-217.



[19]杨先荣,王劲松,张锦泉.高空急流带对甘肃沙尘暴强度的影响[J].中国沙漠,2011,31(4):1046-1051.



[20]陈艳,宿海良,张婉莹.一次强沙尘暴天气的成因分析[J].中国沙漠,2009,29(4):757-765.



[21]吕筱英,孙淑清.气旋爆发性发展过程的动力特征及能量学研究[J].大气科学,1996,20(1):90-100.



[22]林良根,寿绍文,沈之林.一次强沙尘暴过程中干空气侵入的数值模拟和诊断分析[J].南京气象学院学报,2006,29(3):371-378.



[23]赵琳娜,赵思雄.一次引发华北和北京沙尘暴天气的快速发展气旋的诊断研究[J].大气科学,2004,28(5):722-735.



[24]杨先荣,王劲松,何玉春,等.甘肃中部强沙尘暴成因分析[J].中国沙漠,2008,28(3):567-571.



[25]井喜,屠妮妮,井宇.位涡和Q矢量诊断在毛乌素沙地沙尘天气预报中的应用[J].中国沙漠,2008,28(4):762-769.



[26]陶诗言.中国之暴雨[M].北京:科学出版社,1980:225.



[27]吴国雄,蔡雅萍,唐晓菁.湿位涡和倾斜涡度发展[J].气象学报,1995,53(4):387-404.



[28]Hoskins B J.McIntyre M E,Robertson A W.On the use and significance of isentropic potential vorticity maps[J].Quarterly Journal of the Royal Meteorological Society,1985,111:877-946.



[29]伍荣生,谈哲敏.广义涡度与位势涡度守恒定律及应用[J].气象学报,1989,47(4):436-442.

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