干旱区生态环境知识资源中心(Arid): Analyses of spring mean circulations for major and minor dust storm years in China-Mongolia area

Arid

	Analyses of spring mean circulations for major and minor dust storm years in China-Mongolia area
	Song, MinHong; Qian, ZhengAn; Cai, Ying; Liu, ChungMing
通讯作者	Song, MH
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2009
卷号	1 期号:4 页码:361-371
英文摘要	To better understand the dust storm (hereafter DS) inducing circulation in the China-Mongolia (CM) DS activity area, the spring mean circulation features and differences on lower levels in three subregions of the CM DS area for the major-and minor-DS years have, as a whole (not partly), been analyzed, utilizing the National Centers for Environmental Prediction and the National Center for Atmospheric Research (NCEP/NCAR) reanalyzed gridded data, the observed DS frequency data in the CM area, and the composite analysis method. The main conclusions are as follows: (1) Judging from the differences in the DS-inducing systems, dust origins, paths of invading cold air, and main DS-strike areas, the whole CM DS area is roughly divided into the three subregions: the East-, Middle-and West-CM subregions (in this paper, referred to as E-, M-, and W-CM). (2) In major DSs during spring over the E-CM, the middle-and lower-level troughs or cyclones over the Japan Sea and northeastern China (NEC) dominate. The invading cold air along the northeastern (NE) or north by east (NE) path often causes the DS in the E-CM region. But nearly the opposite is true in minor DS during spring in E-CM. (3) In the major DS during spring over the M-CM region, the Mongolian troughs or cyclones are the main DS-inducing systems. The strong invading cold air along the northwestern (NW)-or north by west (Nw) path causes the DSs in the M-CM region. (4) In the major DSs during spring over the W-CM region, the South Xinjiang heat lows prevail, the intruding cold air has a western path, and creates the DSs in South Xinjiang. (5) In the past 50 years, the DSs over the M-CM region have had the most severe impact on the preceding three subregions of the CM DS area. Overall, DS activities over all of three regions of the CM area decreased in the past (particularly, over M-and W-CM regions since the mid-1980s. But there existed a short and sudden increasing in E-CM in the years 2000-2002. (6) It is circulation changes and desertification evolutions that cause the yearly and decadal changes of DS in CM area, especially the former. With the backdrop of global warming in the future, perhaps the decreased DS activities over M-and W-CM will persist for some time again, and special attention should be paid to ones over E-CM or to the individual DS events over M-and W-CM.
英文关键词	East- middle- and west-CM subregions major and minor DS during spring DS-inducing system path of invading cold air trend of DS activity changes
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000422272500010
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329321
作者单位	[Song, MinHong; Qian, ZhengAn; Cai, Ying] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, 320,West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China; [Liu, ChungMing] Taiwan Natl Univ, Dept Atmospher Sci, Tokyo 106, Japan
推荐引用方式 GB/T 7714	Song, MinHong,Qian, ZhengAn,Cai, Ying,et al. Analyses of spring mean circulations for major and minor dust storm years in China-Mongolia area[J]. 中国科学院西北生态环境资源研究院,2009,1(4):361-371.
APA	Song, MinHong,Qian, ZhengAn,Cai, Ying,&Liu, ChungMing.(2009).Analyses of spring mean circulations for major and minor dust storm years in China-Mongolia area.SCIENCES IN COLD AND ARID REGIONS,1(4),361-371.
MLA	Song, MinHong,et al."Analyses of spring mean circulations for major and minor dust storm years in China-Mongolia area".SCIENCES IN COLD AND ARID REGIONS 1.4(2009):361-371.