globalchange  > 气候减缓与适应
DOI: 10.1175/JCLI-D-16-0784.1
Scopus记录号: 2-s2.0-85040907006
论文题名:
Rapid weakening of tropical cyclones in monsoon gyres over the tropical Western North Pacific
作者: Liang J.; Wu L.; Gu G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期:3
起始页码: 1015
结束页码: 1028
语种: 英语
英文关键词: Hurricanes/typhoons ; Monsoons
Scopus关键词: Atmospheric thermodynamics ; Oceanography ; Shear flow ; Storms ; Submarine geophysics ; Surface waters ; Tropics ; Environmental factors ; Environmental humidities ; Hurricanes/typhoons ; Monsoons ; Operational forecasts ; Sea-surface temperature change ; Tropical cyclone intensity ; Western North Pacific ; Hurricanes ; forecasting method ; gyre ; humidity ; hurricane ; monsoon ; sea surface temperature ; typhoon ; wind shear ; Pacific Ocean ; Pacific Ocean (North)
英文摘要: As one major source of forecasting errors in tropical cyclone intensity, rapid weakening of tropical cyclones [an intensity reduction of 20 kt (1 kt = 0.51 m s-1) or more over a 24-h period] over the tropical open ocean can result from the interaction between tropical cyclones and monsoon gyres. This study aims to examine rapid weakening events occurring in monsoon gyres in the tropical western North Pacific (WNP) basin during May-October 2000-14. Although less than one-third of rapid weakening events happened in the tropical WNP basin south of 25°N, more than 40% of them were associated with monsoon gyres. About 85% of rapid weakening events in monsoon gyres occurred in September and October. The rapid weakening events associated with monsoon gyres are usually observed near the center of monsoon gyres when tropical cyclone tracks make a sudden northward turn. The gyres can enlarge the outer size of tropical cyclones and tend to induce prolonged rapid weakening events with an average duration of 33.2 h. Large-scale environmental factors, including sea surface temperature changes, vertical wind shear, and midlevel environmental humidity, are not primary contributors to them, suggesting the possible effect of monsoon gyres on these rapid weakening events by modulating the tropical cyclone structure. This conclusion is conducive to improving operational forecasts of tropical cyclone intensity. © 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/111664
Appears in Collections:气候减缓与适应

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作者单位: Pacific Typhoon Research Center, Key Laboratory of Meteorological Disaster, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; Earth System Science Interdisciplinary Center, University of Maryland, College Park, College Park, MD, United States; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China

Recommended Citation:
Liang J.,Wu L.,Gu G.. Rapid weakening of tropical cyclones in monsoon gyres over the tropical Western North Pacific[J]. Journal of Climate,2018-01-01,31(3)
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