Analysis on spatio-temporal characteristics of wintertime planetary wave in the northern hemisphere based on 2D FFT

	Analysis on spatio-temporal characteristics of wintertime planetary wave in the northern hemisphere based on 2D FFT
	Wang, Xiuhong 1; Yu, Weidong 2; VanAlbada, GD ; Shi, Y ; Dongarra, J ; Sloot, PMA
	2007
会议日期	5 27, 2007 - 5 30, 2007
会议地点	Beijing, China
关键词	planetary wave large-scale oscillations northern hemisphere wave number
卷号	4489
期号	PART 3
页码	98-+
英文摘要	To describe spatial and temporal characteristics of the activities of wintertime planetary waves in the northern hemisphere, their numbers and periods were precisely calculated, based on NCAR/NCEP reanalysis data. The objective variables include sea level pressure (SLP) and anomaly stream function at 850 hPa, 500 hPa and 200 hPa. 2D FFT and spectral analysis reveal that: (1) The wave numbers 1 and 2 dominate the perturbation pattern at 70 degrees-80 degrees N zonal belt. (2) The wave numbers 1, 2 and 3 dominate at 60 degrees-70 degrees N zonal belt. (3) The wave numbers 1-4 dominate at 50 degrees-60 degrees N zonal belt. The results accord fairly well with Rossby's classical trough formula and are of potential use for understanding the northern hemisphere large-scale oscillations.
会议录	COMPUTATIONAL SCIENCE - ICCS 2007, PT 3, PROCEEDINGS
会议录出版者	SPRINGER-VERLAG BERLIN
会议录出版地	HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY
语种	英语
ISSN号	03029743
WOS研究方向	Computer Science
WOS记录号	WOS:000246993500013
内容类型	会议论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/5282]
专题	自然资源部第一海洋研究所
作者单位	1.Jiangsu Univ, Informat Retrieval Off, 301 Xuefu Rd, Zhenjiang, Peoples R China; 2.First Inst Oceanog, Lab Marine Sci & Numer model, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiuhong,Yu, Weidong,VanAlbada, GD,et al. Analysis on spatio-temporal characteristics of wintertime planetary wave in the northern hemisphere based on 2D FFT[C]. 见:. Beijing, China. 5 27, 2007 - 5 30, 2007.