全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
大气科学  2012 

西风带高空槽对登陆我国变性热带气旋的影响及其机理研究

DOI: 10.3878/j.issn.1006-9895.2011.11076

Keywords: 热带气旋,高空槽,变性,片段位涡反演

Full-Text   Cite this paper   Add to My Lib

Abstract:

应用日本气象厅1979~2008年的热带气旋资料以及日本25年(JRA-25)再分析资料,本文首先对登陆我国变性加强和变性减弱的两类热带气旋进行了合成对比分析,发现热带气旋变性后的强度变化与相应的西风带高空槽的强弱有很好的对应关系。然后,我们选取了2004年登陆我国的热带气旋Haima为研究对象,通过中尺度模式模拟再现了其登陆后变性演变过程,采用片段位涡反演方法改变了模式初始高空槽的强度,研究了高空槽强度的变化对Haima变性过程的影响。研究表明:(1)高空槽加强(减弱)后,Haima移速明显加快(减慢),此外深(浅)槽对应的Haima变性加强过程中心气压降幅较大(小);(2)不同强度的高空槽与Haima相互作用的过程中,深槽对应的高空急流范围较大,强度更强,相应的高空强辐散有利于Haima明显的再发展;(3)另外深槽对应着较强的高层正位涡带,正位涡向下伸展诱发低层Haima正位涡明显增长,从而导致低层锋区的强烈发展和低层气旋的明显加强。

References

[1]  Bosart L F, Velden C S, Bracken W E, et al. 1998. Environmental influences on the rapid intensification of hurricane Opal (1995) over the Gulf of Mexico [J]. Mon. Wea. Rev., 128: 322-352.
[2]  Davis C A, Emanuel K A. 1991. Potential vorticity diagnostics of cyclogenesis [J]. Mon. Wea. Rev., 119: 1929-1953.
[3]  Evans J L, Prater-Mayes B E. 2004. Factors affecting the posttransition intensification of hurricane Irene (1999) [J]. Mon. Wea. Rev., 132: 1355-1368.
[4]  韩桂荣, 唐晓文, 魏建苏. 2007. 登陆台风变性发展与消亡的对比分析 [J]. 气象科学, 27 (1): 35-41.Han Guirong, Tang Xiaowen, Wei Jiansu. 2007. The extratropical transition analyses on two landfall typhoons [J]. Scientia Meteorologica Sinica (in Chinese), 27 (1): 35-41.
[5]  Harr P A, Elsberry R L. 2000. Extratropical transition of tropical cyclones over the western North Pacific. Part Ⅰ: Evolution of structural characteristics during the transition process [J]. Mon. Wea. Rev., 128: 2613-2633.
[6]  Harr P A, Elsberry R L, Hogan T F. 2000. Extratropical transition of tropical cyclones over the western North Pacific. Part Ⅱ: The impact of midlatitude circulation characteristics [J]. Mon. Wea. Rev., 128: 2634-2653.
[7]  Hoskins B J, Bretherton F P. 1972. Atmospheric frontogenesis models: Mathematical formulation and solution [J]. J. Atmos. Sci., 29: 11-37.
[8]  季亮, 费建芳. 2009. 副热带高压对登陆台风等熵面位涡演变影响的数值模拟研究 [J]. 大气科学, 33 (6): 1297-1308.Ji Liang, Fei Jianfang. 2009. Numerical simulation of the effect of subtropical anticyclone on the evolvement of potential vorticity of landfall Typhoon on isentropic surface [J]. Chinese Journal of Atmospheric Sciences (in Chinese), 33 (6): 1297-1308.
[9]  Joseph B K. 2004. Weather research and forecasting model: A technical overview. 84th AMS Annual Meeting, 10-15.
[10]  Klein P M, Harr P A, Elsberry R L. 2000. Extratropical transition of western North Pacific tropical cyclones: An overview and conceptual model of the transformation stage [J]. Wea. Forecasting, 15: 373-395.
[11]  Klein P M, Harr P A, Elsberry R L. 2002. Extratropical transition of western North Pacific tropical cyclones: Midlatitude and tropical cyclone contributions to reintensification [J]. Mon. Wea. Rev., 130: 2240-2259.
[12]  李英, 陈联寿, 雷小途. 2005. Winnie (1997) 和Bilis (2000) 变性过程的湿位涡分析 [J]. 热带气象学报, 21 (2): 142-152.Li Ying, Chen Lianshou, Lei Xiaotu. 2005. Moisture potential vorticity analysis on the extratropical transition processes of Winnie (1997) and Bilis (2000) [J]. Journal of Tropical Meteorology (in Chinese), 21 (2): 142-152.
[13]  李英, 陈联寿, 雷小途. 2008. 变性台风Winnie (9711) 环流中的锋生现象 [J]. 大气科学, 32 (3): 629-639.Li Ying, Chen Lianshou, Lei Xiaotu. 2008. Frontogenesis in the circulation of typhoon Winnie (1997) during its extratropical transition process [J]. Chinese Journal of Atmospheric Sciences (in Chinese), 32 (3): 629-639.
[14]  李英, 陈联寿, 王继志. 2004. 登陆热带气旋长久维持与迅速消亡的大尺度环流特征 [J]. 气象学报, 62 (2): 167-179.Li Ying, Chen Lianshou, Wang Jizhi. 2004. The diagnostic analysis on the characteristics of large scale circulation corresponding to the sustaining and decaying of tropical cyclone after its landfall [J]. Acta Meteorologica Sinica (in Chinese), 62 (2): 167-179.
[15]  Onogi K, Tsutsni J, Koide H, et al. 2007. The JRA-25 reanalysis [J]. J. Meteor. Soc. Japan, 85: 369-432.
[16]  宋金杰, 王元. 2010. 西北太平洋变性热带气旋的若干特征 [J]. 南京大学学报 (自然科学版), 46 (3): 328-336.Song Jinjie, Wang Yuan. 2010. Some characteristics on extratropical transition of tropical cyclones over the western North Pacific [J]. Journal of Nanjing University (Natural Sciences) (in Chinese), 46 (3): 328-336.
[17]  朱佩君, 郑永光, 陶祖钰. 2003. 发生在中国大陆的台风变性加强过程分析 [J]. 热带气象学报, 19 (2): 157-162.Zhu Peijun, Zheng Yongguang, Tao Zuyu. 2003. Analysis of the extratropical transition of tropical cyclone over mainland of China [J]. Journal of Tropical Meteorology (in Chinese), 19 (2): 157-162.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133