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学科主题: Oceanography
题名: The characteristic differences of tropical cyclones forming over the western North Pacific and the South China Sea
作者: Yuan, JN ; Wang, DX ; Liu, CX ; Han, H ; Huang, HJ
通讯作者: yuanjn@grmc.gov.en
关键词: characteristic differences ; tropical cyclone ; Western north Pacific and South China Sea
刊名: ACTA OCEANOLOGICA SINICA
发表日期: 2007
卷: 26, 期:4, 页:29-43
收录类别: sci
部门归属: China Meteorol Adm, Key Open Lab Trop Monsoon, Guangzhou Inst Trop & Marine Meteorol, Guangzhou 510080, Peoples R China; Chinese Acad Sci, S China Sea Inst Oceanol, Lab Trop Marine Enviornm Dynam, Guangzhou 510301, Peoples R China
项目归属: LED
摘要: The best track dataset of tropical cyclones in the western North Pacific (WNP) and the South China Sea ( SCS) from 1977 to 2005 during the satellite era, the NCEP/NCAR reanalysis dataset and the extended reconstructed sea surface temperature dataset are employed in this study. The main climatological characteristics of tropical cyclone formation over the WNP and the SCS are compared. It is found that there is obviously different for the locations of tropical cyclone origins, achieving the lowest central pressure and termination points between over the WNP and over the SCS. The annual number of tropical cyclones forming over the SCS is obviously less than over the WNP, and there is a significant negative correlation with the correlation coefficient being -0.36 at the 5% significance level between over the WNP and over the SCS. The mean speed of tropical cyclone moving is 6.5 m/s over the WNP and 4.6 m/s over the SCS. The mean lowest central pressure of tropical cyclones is obviously weaker over the SCS than over the WNP. The tropical cyclone days per year, mean total distance and total displacement of tropical cyclone traveled over the WNP are all obviously longer than those over the SCS. Tropical cyclone may intensify to Saffir - Simpson hurricane scale 5 over the WNP, but no tropical cyclone can intensify to Saffir - Simpson hurricane scale 3 over the SCS. The changing ranges of the radii (R15, R16) of the 15.4 m/s winds them and the 25.7 m/s winds over the WNP are obviously wider than those over the SCS, and the median values of the radii over the WNP are also larger than those over the SCS. For the same intensity of tropical cyclones, both radii have larger medians over the WNP than over the SCS. The correlations of annual mean tropical cyclone size parameters between over the WNP and over the SCS are not significant. At the same time, the asymmetric radii of tropical cyclones over the WNP are different from those over the SCS.
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WOS记录号: WOS:000249470200004
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5869
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Recommended Citation:
Yuan, JN; Wang, DX; Liu, CX; Han, H; Huang, HJ.The characteristic differences of tropical cyclones forming over the western North Pacific and the South China Sea,ACTA OCEANOLOGICA SINICA,2007,26(4):29-43
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