Vertical Structure of Atmosphere Boundary Layer during Wind-sandstorm Process over Sandstorm Source in Arid Area of Northwest China

doi:10.7522/j.issn.1000-694X.2013.00301

JOURNAL OF DESERT RESEARCH

2014, Vol. 34

Issue (1): 206-214 DOI: 10.7522/j.issn.1000-694X.2013.00301

Vertical Structure of Atmosphere Boundary Layer during Wind-sandstorm Process over Sandstorm Source in Arid Area of Northwest China

Li Yanying^1,2, Zhang Qiang¹, Chen Ying³, Hu Xingcai³

1. Key laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province/Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China;
2. Wuwei Meteorological Bureau, Wuwei 733000, Gansu, China;
3. Minqin Meteorological Station, Minqin 733300, Gansu, China

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Abstract Based on the daily observed sounding data at 08:00 and 20:00, precipitations, maximum temperatures and sandstorm real-time data of 1 811 typical wind-sandstorm cases during 1971-2008 in Minqin, a sandstorm source in arid area of Northwest China, vertical structure characteristics of atmosphere boundary layer in different months and seasons is discussed under dry-wet variation, sandstorm strength, sandstorm occurring time and sandstorm duration. The main conclusions are:(1)The maximum atmospheric mixed layer thickness during sandstorm process is larger with more than 2 500 m from April to May, but the maximum atmospheric mixed layer thickness during strong sandstorm process is larger from June to July with 2 530 m in July, the maximum atmospheric mixed layer thickness during sandstorm process is lower by 200-400 m than that during gale process from March to August. The maximum atmospheric mixed layer thickness during sandstorm process is deeper in afternoon with 2 700 m from April to May. The maximum maximum atmospheric mixed layer thickness varies inversely with the sandstorm duration.(2)The disturb and front inversion are more frequent and stronger during sandstorm process, disturb inversion' s strength is strongest up to 2.5 ℃/100m.The front inversion height is 700-1 000 m, disturb inversion height is 150-400 m. The radiation and radiation-front inversion are more frequent and stronger during gale process, and the front inversion is obviously stronger during strong sandstorm process. It shows that sandstorm is mainly resulted from strong wind disturbance in lower atmosphere and cold front above 500 m in upper atmosphere.(3)There is an obvious dry atmospheric layer above 800 hPa in daytime, but it is drier and warmer in nighttime, and a phenomenon of inversion wet is also obvious in nighttime. If the surface layer is drier and colder, northwest wind is stronger, the duration of strong sandstorm will be longer.

Key words: sandstorm source arid area of northwest China atmosphere boundary layer maximum mixed layer depth inversion layer vertical T-T_d field wind field

Received: 30 December 2012 Published: 20 January 2014

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P425.55



	Articles by authors
	Li Yanying
	Zhang Qiang
	Chen Ying
	Hu Xingcai

Cite this article:

Li Yanying, Zhang Qiang, Chen Ying, Hu Xingcai. Vertical Structure of Atmosphere Boundary Layer during Wind-sandstorm Process over Sandstorm Source in Arid Area of Northwest China. JOURNAL OF DESERT RESEARCH, 2014, 34(1): 206-214.

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http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00301 OR http://www.desert.ac.cn/EN/Y2014/V34/I1/206

[1] 张强,黄荣辉,王胜.浅论西北干旱区陆面过程和大气边界层对区域天气气候的特殊作用[J].干旱气象,2011,29(2):133-136.
[2] 李岩瑛,杨晓玲,王式功.河西走廊东部近50 a沙尘暴成因、危害及防御对策[J].中国沙漠,2002,22(3):283-286.
[3] 王式功,王金艳,周自江,等.中国沙尘天气的区域特征[J].地理学报,2003,58(2):193-200.
[4] 赵兴梁.甘肃特大沙尘暴的危害与对策[J].中国沙漠,1993,13(3):1-5.
[5] 李岩瑛,张强.水平螺旋度在沙尘暴预报中的应用[J].气象学报,2012,70(1):144-154.
[6] 张强,王胜.特强沙尘暴(黑风)的形成及其效应[J].中国沙漠,2005,25(5):675-681
[7] 赵克明,李霞,杨静.乌鲁木齐大气最大混合层厚度变化的环境响应[J].干旱区研究,2011,28(3):509-513.
[8] 李杰,蒋小平,元慧慧,等.混合层深度对热带气旋强度的影响[J].气象,2010,36(4):27-29.
[9] 李岩瑛,张强,薛新玲,等.民勤大气边界层特征与沙尘天气的气候学关系研究[J].中国沙漠,2011,31(3):757-764.
[10] 曾庆存,胡非,程雪玲,等.大气边界层阵风扬尘机理[J].气候与环境研究,2007,12(3):251-255.
[11] 程雪玲,曾庆存,胡非,等.大气边界层强风的阵性和相干结构[J].气候与环境研究,2007,12(3):227-243.
[12] 李岩瑛,张强,胡兴才,等.西北干旱区和黄土高原大气边界层特征对比及其对气候干湿变化的响应[J].冰川冻土,2012,34(5):1047-1058.
[13] 曾庆存,程雪玲,胡非.大气边界层非常定下沉急流和阵风的起沙机理[J].气候与环境研究,2007,12(3):244-250.
[14] 李岩瑛,钱正安,薛新玲,等.西北干旱区夏半年深厚的混合层与干旱气候形成[J].高原气象,2009,28(1):46-54.
[15] 张强,张杰,王胜,等.我国干旱区深厚大气边界层与陆面热力过程的关系研究[J].中国科学:地球科学,2011,41(9):1365-1374.
[16] 王式功,杨德保,尚可政,等.城市空气污染预报研究[M].兰州:兰州大学出版社,2002:93-101.
[17] 朱乾根,林锦瑞,寿绍文.天气学原理和方法[M].北京:气象出版社,1981:453.
[18] 谭立海,张伟民,安志山,等.砾石覆盖对边界层风速梯度的影响[J].中国沙漠,2012,32(6):1522-1527.
[19] 李玲萍,李岩瑛,刘明春.石羊河流域1961—2005年蒸发皿蒸发量变化趋势及原因初探[J].中国沙漠,2012,32(3):832-841.
[20] 张克新,刘普幸,霍华丽,等.石羊河流域近50 a来日照时数的时空变化特征分析[J].中国沙漠,2011,31(2):517-520.
[21] 马瑞,王继和,屈建军,等.近50 a来民勤绿洲-荒漠过渡带气候变化及沙尘天气特征[J].中国沙漠,2011,31(4):1031-1036.
[22] 常兆丰,韩福贵,仲生年.民勤荒漠区气候变化对全球变暖的响应[J].中国沙漠,2011,31(2):505-510.
[23] 刘新春,钟玉婷,何清,等.塔克拉玛干沙漠腹地及周边地区PM₁₀时空变化特征及影响因素分析[J].中国沙漠,2011,31(2):323-330.
[24] 詹科杰,赵明,杨自辉,等.地气温差对沙尘源区不同下垫面沙尘输运结构的影响[J].中国沙漠,2011,31(3):655-660.
[25] 吕萍,董治宝.风沙边界层动力学研究现状及面临的问题[J].干旱区研究,2004,21(2):122-124.

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