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	Seasonal rotation features of wind vectors and application to evaluate monsoon simulations in amip models
	Zhang, Li1,2; Li, Jianping1
刊名	Climate dynamics
	2008-09-01
卷号	31期号:4页码:417-432
ISSN号	0930-7575
DOI	10.1007/s00382-007-0327-9
通讯作者	Li, jianping(ljp@lasg.iap.ac.cn)
英文摘要	A new concept, the directed angle, is introduced to study seasonal rotation regimes of global wind vectors and annual variability of monsoon. compared with previous studies on using angles between wind vectors, this concept better describes the daily variations of both rotation direction and rotation amplitude of wind vector. according to the concept, six categories of wind vector rotation with seasonal cycle in the global have been detected and classified as follows: (1) clockwise to counter-clockwise (ctcc) rotation; (2) counter-clockwise to clockwise (cctc) rotation; (3) full clockwise (fc) rotation; (4) full counter-clockwise (fcc) rotation; (5) stable style; (6) unstable style. generally, wind vectors in monsoon regions rotate in forms of the first four styles. moreover, the rotation direction and rotation amplitude of wind vectors have regional differences, and different monsoon subsystems possess different rotation styles for wind vectors in an annual cycle. for instance, the south asian monsoon follows the cctc rotation, while the east asian monsoon follows the fcc rotation. the ctcc rotation is seen in the south china sea. both the west africa and the south indo-china peninsula are covered by the fc rotation. therefore, the directed angle is able to describe the evolution of wind vectors on a daily scale, which provides a new clue for spatio-temporal information about wind vector variation and model evaluation. using the new concept, this study aims at evaluating the model outputs of eight agcms of amip in the intergovernmental panel on climate change (ipcc) fourth assessment report (ar4). compared to the corresponding observations, most models are able to simulate the global rotation regimes of wind vectors reasonably well, however very little skill is shown in the monsoon rotation styles of some models, especially in the south china sea and west africa. moreover, the simulations differ mostly from observations during the transitional season.
WOS关键词	ASIAN SUMMER MONSOON ; NORTHERN HEMISPHERE ; CLIMATE MODEL ; VARIABILITY ; GCM ; CIRCULATION ; CHINA ; PREDICTABILITY ; PRECIPITATION ; RAINFALL
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000257547400005
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2388356
专题	中国科学院大学
通讯作者	Li, Jianping
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, LASG, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Li,Li, Jianping. Seasonal rotation features of wind vectors and application to evaluate monsoon simulations in amip models[J]. Climate dynamics,2008,31(4):417-432.
APA	Zhang, Li,&Li, Jianping.(2008).Seasonal rotation features of wind vectors and application to evaluate monsoon simulations in amip models.Climate dynamics,31(4),417-432.
MLA	Zhang, Li,et al."Seasonal rotation features of wind vectors and application to evaluate monsoon simulations in amip models".Climate dynamics 31.4(2008):417-432.

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