globalchange  > 影响、适应和脆弱性
DOI: 10.1175/JCLI-D-18-0029.1
Scopus记录号: 2-s2.0-85053068588
论文题名:
Changes in characteristics of rapidly intensifying western North Pacific tropical cyclones related to climate regime shifts
作者: Zhao H.; Duan X.; Raga G.B.; Klotzbach P.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期:19
起始页码: 8163
结束页码: 8179
语种: 英语
英文关键词: Climate change ; Climate variability ; Hurricanes/typhoons
Scopus关键词: Hurricanes ; Oceanography ; Storms ; Surface waters ; Tropics ; Climate regime shift ; Climate variability ; Equatorial Pacific ; Hurricanes/typhoons ; Rapid intensification ; Sea surface temperature anomalies ; Vertical wind shear ; Western North Pacific ; Climate change
英文摘要: A significant increase in the proportion of tropical cyclones undergoing rapid intensification at least once during their lifetime (RITCs) over the western North Pacific (WNP) is observed since 1998 when an abrupt climate regime shift occurred. Changes of large-scale atmospheric and oceanic conditions affecting TC activity are compared between two subperiods: one before and one since 1998. Results suggest that both a significant decrease in the number of TCs and a nearly unchanged number of RITCs since 1998 caused a significant increase in the frequency of RITCs. The decrease in TC numbers is likely driven by considerably increased vertical wind shear and decreased low-level vorticity. In contrast, the unchanged RITC counts and thus increased ratio of RITCs during the recent decades are largely attributed to the dominance of a more conducive ocean environment with increased TC heat potential and warmer sea surface temperature anomalies. These associated decadal changes are closely associated with the recent climate regime shift. During the recent decades with a mega-La Niña-like pattern, stronger easterly trade winds have caused increased vertical wind shear and a weakened monsoon trough, thus hampering TC formation ability over the WNP. In addition, a steeper thermocline slope that hampered the eastward migration of warm water along the equatorial Pacific has generated a more favorable thermodynamic environment supporting TC rapid intensification over the WNP. © 2018 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110680
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Key Laboratory of Meteorological Disaster, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; Joint International Research Laboratory of Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing, China; Pacific Typhoon Research Center, Nanjing University of Information Science and Technology, Nanjing, China; Earth System Modeling Center, Nanjing University of Information Science and Technology, Nanjing, China; Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, Mexico City, Mexico; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States

Recommended Citation:
Zhao H.,Duan X.,Raga G.B.,et al. Changes in characteristics of rapidly intensifying western North Pacific tropical cyclones related to climate regime shifts[J]. Journal of Climate,2018-01-01,31(19)
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