干旱区生态环境知识资源中心(Arid): Features of the Deep Atmospheric Boundary Layer Over the Taklimakan Desert in the Summertime and its Influence on Regional Circulation

Arid

DOI	10.1029/2019JD030714
	Features of the Deep Atmospheric Boundary Layer Over the Taklimakan Desert in the Summertime and its Influence on Regional Circulation
	Wang, Minzhong 1,2; Xu, Xiangde 2; Xu, Hongxiong 2; Lenschow, Donald H.3; Zhou, Mingyu 4; Zhang, Jiantao 1; Wang, Yinjun 2
通讯作者	Xu, Xiangde
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2019
卷号	124 期号:23 页码:12755-12772
英文摘要	To investigate the features of the extremely deep atmospheric boundary layer (ABL) over the Taklimakan Desert (TD) and its influence, this paper utilizes sounding data obtained from a month-long intensive field campaign carried out in July 2016 over the TD to study the structure of the 5,000-m-depth ABL over the desert and the features of its temporal and spatial variations. The differences and causes of the regional circulation are analyzed for both the deep ABL and shallow ABL over the TD. We show that (1) deep ABLs occurred frequently in the hinterland and the surrounding areas of the TD in July 2016. The numbers of days when the ABL height reached 4,000 m at Tazhong, Minfeng, Korla, Ruoqiang, and Kashgar are 8, 9, 5, 4, and 2, respectively, and the numbers of days when the ABL height exceeded 3,000 m at the above locations are 20, 22, 13, 15, and 5, respectively. (2) The ABL height reached 5,000 m over the TD on 1 July 2016. The diurnal variation of the ABL appears in such a manner that it develops and intensifies gradually from southeast to northwest direction. The middle of the desert witnesses large values of ABL heights. The ABL height in the desert is obviously higher than those in the surrounding oases and in the northern part of Xinjiang. (3) On 1 July 2016, a deep ABL process is accompanied by a strong easterly low-level jet on the following night, which triggers significant air accumulation and dynamic convergence in the lower-level atmosphere over the middle and west of the TD, thus intensifying the divergence and anticyclonic circulation at the 500-hPa middle-level atmosphere. (4) The influence of the deep ABL process on 1 July on the regional circulation mainly occurs below 400 hPa, while its influence is relatively small above 400 hPa. This type of influence is also regional, as it mainly occurs over the TD and its surrounding areas. This study enriches the understanding of the deep ABL process over the TD and its influence.
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000505626200022
WOS关键词	SAHARAN HEAT LOW ; LEVEL JET CLIMATOLOGY ; LAND-SURFACE ; DUST TRANSPORT ; PARAMETERIZATION ; MESOSCALE ; HEIGHT ; SYSTEM ; MODEL ; IMPLEMENTATION
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
EI主题词	2019-12-16
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311786
作者单位	1.Chinese Meteorol Adm, Urumqi Inst Desert Meteorol, Urumqi, Peoples R China; 2.CAMS, State Key Lab Severe Weather, Beijing, Peoples R China; 3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 4.Natl Marine Environm Forecast Ctr, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Minzhong,Xu, Xiangde,Xu, Hongxiong,et al. Features of the Deep Atmospheric Boundary Layer Over the Taklimakan Desert in the Summertime and its Influence on Regional Circulation[J],2019,124(23):12755-12772.
APA	Wang, Minzhong.,Xu, Xiangde.,Xu, Hongxiong.,Lenschow, Donald H..,Zhou, Mingyu.,...&Wang, Yinjun.(2019).Features of the Deep Atmospheric Boundary Layer Over the Taklimakan Desert in the Summertime and its Influence on Regional Circulation.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(23),12755-12772.
MLA	Wang, Minzhong,et al."Features of the Deep Atmospheric Boundary Layer Over the Taklimakan Desert in the Summertime and its Influence on Regional Circulation".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.23(2019):12755-12772.