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...

ENSO事件对西北太平洋热带气旋影响的分级研究

DOI: 10.3969/j.issn.02534193.2013.02.004, PP. 21-34

Keywords: 热带气旋累积能量,西北太平洋,热带气旋强度,ENSO指数,关键区

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用1951—2006年联合台风警报中心(JTWC)最佳路径数据集和气候预测中心(CPC)ENSO资料,分析了西北太平洋不同等级热带气旋累积能量(accumulatedcycloneenergy,ACE)与ENSO指数之间的关系。结果表明:ACE与ENSO指数间存在正相关关系;分级热带气旋中,ENSO事件主要通过超强台风(SuperTY)的活动与ACE指数联系起来的,超强台风频数在ElNi?o期间多于LaNi?a期间,同时持续时间也更长;ENSO指数和热带气旋活跃季超强台风ACE指数的滞后相关(ENSO指数滞后5个月内)与它们的同时相关大小相当。此外,还研究了分级热带气旋持续时间、强度和频数分别对ACE指数的贡献,结果显示超强台风频数的贡献最大。接下来,利用1951—2006年不同ENSO位相情况下NCEP再分析资料,分析了ENSO影响超强台风发生发展的物理机制。主要结论为:西北太平洋存在一些SuperTY频数与源地分布在ENSO年与平常年相比有明显差异的关键区;ENSO事件改变关键区低层相对涡度以及海表温度是其影响SuperTY源地及频数变化的重要途径。

References

[1]  Chan J C L. Tropical Cyclone Activity in the Northwest Pacific in Relation to the El Nino/Southern Oscillation Phenomenon[J].Mon Wea Rev,1985,113:599-606.
[2]  Pudov V D, Petrichenko S A.Relationship between the evolution of tropical cyclones in the Northwestern Pacific and El Ni?o[J]. Oceanology, 1998, 38: 447-452.
[3]  Pudov V D, Petrichenko S A. 1997-1998 El Ni?o and tropical cyclone genesis in the Northwestern Pacific[J].Izvestiya, Atmospheric and Oceanic Physics, 2001, 37: 576-583.
[4]  JTWC, cited 2008: Joint Typhoon Warning Center best track data site.
[5]  CPC, cited 2008: Monthly atmospheric and SST indices.
[6]  Barnston A G, Chelliah M, Goldenberg S B. Documentation of a highly ENSO-related SST region in the equatorial Pacific[J]. Atmos-Ocean, 1997, 35:367-383.
[7]  Gray W M.Global view of the origin of tropical disturbances and storms[J].Mon Wea Rev,1968,96:669-700.
[8]  Camargo S J, Sobel A H.Western North Pacific Tropical Cyclone Intensity and ENSO[J]. J Climate, 2005, 18: 2996-3006.
[9]  Bell G D, Halpert M S.Climate assessment for 1999[J]. Bull Amer Meteor Soc, 2000, 81: S1-S50.
[10]  中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. 热带气旋等级[S]. GB/T 19201—2006.
[11]  Rasmusson E M, Carpenter T H. Variations in tropical sea surface temperature and surface wind fields associated with the Southern Oscillation El Nino[J]. Mon Wea Rev, 1982, 110(5) : 354-384.
[12]  钱维宏,朱亚芬,叶谦. 赤道东太平洋海温异常的年际和年代际变率[J]. 科学通报,1998,43(10):1098-1102.
[13]  Atkinson G. Proposed system for near real time monitoring of global tropical circulation and weather patterns. Preprints, 11th Technical Conf. on Hurricanes and Tropical Meteorology, Miami Beach, FL, Amer. Meteor. Soc., 1977:645-652.
[14]  Pan Y H.The effect of the thermal state of equatorial eastern Pacific on the frequency of typhoon over the western Pacific (in Chinese with English abstract)[J]. Acta Meteor Sin, 1982, 40: 24-34.
[15]  Dong K.El Ni?o and tropical cyclone frequency in the Australian region and the Northwestern Pacific[J]. Aust Meteor Mag., 1988, 36:219-255.
[16]  Wu G, Lau N C. A GCM Simulation of the relationship between tropical storm formation and ENSO[J]. Mon Wea Rev, 1992, 120: 958-977.
[17]  Chu P-S,Wang J.Tropical cyclone occurrences in the vicinity of Hawaii: Are the differences between El Ni?o years significant?[J]. J Climate, 1997, 10: 2683-2689.
[18]  Wang B, Chan J C L.How strong ENSO events affect tropical storm activity over the western North Pacific[J]. J Climate, 2002, 15: 1643-1658.
[19]  Chia H H, Ropelewski C F.The interannual variability in the genesis location of tropical cyclones in the northwest Pacific[J]. J Climate, 2002, 15: 2934-2944.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133