Analysis on  Black Storm Cause in Hexi Corridor on 24 April 2010

QIAN Li;YANG Yong-Long;WANG Rong-Zhe

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Plateau Meteorology ›› 2011, Vol. 30 ›› Issue (6) : 1653-1660.

Analysis on  Black Storm Cause in Hexi Corridor on 24 April 2010

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Abstract

Using the conventional sounding and ground enhanced observation data, based on dynamical diagnosis and mesoscale method, the causes of a  regional strong sandstorm in Hexi corridor on 24 April 2010 is analyzed. The result shows that the main reason of strong sandstorm formation  is the  surface heat low with cold front. The large-scale system of forming strong sandstorm is that  the polar cold air ahead of Ural Mountains high pressure ridge erupts toward south. The strong barocliny on 700 hPa over Hexi corridor, Gansu Province is not only advantage to frontogenesis and low level convergence, but also momentum transport along downward. The large gradients of pressure and temperature before and after cold fronts are caused by development of thermal low pressure, which provide the thermal instability condition for convection development. Ascending motion before cold front and overlap of upper and lower jets provide the developing condition of deep vertical circulation for information of black storm. Using the sounding  data before and after black storm ocurring, the atmospheric dynamic characteristic as ‘windstorm horizontal helicity’ and thermal characteristic as ‘V-3θ’ are calculated and analyzed. The result reveals that reasonable atmospheric temperature-humidity structure is beneficial to forming and developing of sandstorm.

Key words

Hexi corridor / Black storm / Sandstorm

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QIAN Li , YANG Yong-Long , WANG Rong-Zhe. Analysis on  Black Storm Cause in Hexi Corridor on 24 April 2010. Plateau Meteorology. 2011, 30(6): 1653-1660

References

[1]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.
[2]徐国昌. 强沙尘暴天气过程中的若干问题思考[J]. 干旱气象, 2008, 26(2): 9-11.
[3]徐国昌, 陈敏莲, 吴国雄. 甘肃省“4.22”特大沙暴分析[J]. 气象学报, 1979, 37(4): 26-35.
[4]王式功, 董光荣. 沙尘暴研究的进展[J].中国沙漠, 2000, 20(4): 349-356.
[5]方宗义, 朱福康, 江吉喜, 等. 中国沙尘暴研究[M]. 北京: 气象出版社, 1997: 1-10.
[6]王式功, 杨德宝, 金炯, 等. 我国西北地区黑风暴的成因和对策[J].中国沙漠, 1995, 15(1): 19-20.
[7]胡隐樵, 光田宁. 强沙尘暴发展与干飑线-黑风暴形成机理的分析[J]. 高原气象, 1996, 15(2): 178-185.
[8]董安祥, 白虎志, 陆登荣, 等. 河西走廊强和特强沙尘暴变化趋势的初步研究[J]. 高原气象, 2003, 22(4): 422-425.
[9]胡隐樵,光田宁. 强沙尘暴微气象特征和局地触发机制[J]. 大气科学, 1996, 21(5): 1582-1589.
[10]王可丽, 江灏, 吴虹. 2001年春季中国北方沙尘暴的环流动力结构分析[J]. 高原气象, 2002, 21(3): 303-308.
[11]省地气象台短期预报岗位培训教材[M]. 北京: 气象出版社, 1998: 225-232.
[12]白肇烨, 徐国昌. 中国西北天气[M]. 北京: 气象出版社, 1986: 438-441.
[13]汤绪, 俞亚勋, 李耀辉, 等. 甘肃河西走廊春季强沙尘暴与低空急流[J]. 高原气象, 2004, 23(6): 840-846.
[14]王劲松, 李耀辉, 康凤琴, 等. \!4 .12”沙尘暴天气的数值模拟及诊断分析[J]. 高原气象, 2004, 23(1): 89-96.
[15]陶建红, 王劲松, 冯建英. 螺旋度在一次强沙尘暴天气分析中的应用[J].中国沙漠, 2004, 24(1): 83-87.
[16]李岩瑛, 张强, 李耀辉, 等. 水平螺旋度与沙尘暴的动力学关系研究[J].地球物理学报, 2008, 51(3): 692-703.
[17]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.
[18]钱莉, 杨金虎, 杨晓玲, 等. 河西走廊东部“2008.5.2”强沙尘暴成因分析[J]. 高原气象, 2010, 29(3): 719-725.
[19]欧阳首承. 天气演化与结构预测[M]. 北京: 气象出版社, 1998, 89-119.
[20]岳平, 牛生杰, 张强. 民勤一次沙尘暴的观测分析[J]. 高原气象, 2008, 27(2): 401-407.
[21]岳平, 牛生杰, 张强. 民勤一次沙尘暴天气过程的稳定度分析[J].中国沙漠, 2004, 24(1): 668-671.
[22]范俊红, 郭树军, 李宗涛. 河北省中南部一次沙尘暴的动力条件分析[J]. 高原气象, 2009, 28(4): 719-725.
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