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Climatological relationships among the tropical cyclone frequency, duration, intensity and activity regions over the Western Pacific

ISSN号：1672-5174
期刊名称：《中国海洋大学学报：自然科学版》
时间：0
分类：P444[天文地球—大气科学及气象学] TU238.2[建筑科学—建筑设计及理论]
作者机构：[1]Department of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China, [2]NanAo Observatory of Shantou Meteorological Bureau, Shantou 515900, China
相关基金：This work was supported by the National Natural Science Foundation of China （40875020）, the NSFC-Guangdong Joint Fund Program （U0733002） and the National Basic Research Program of China （2009CB421404）.

作者： LI WeiBiao[1], DU QinBo[1,2], CHEN ShuMin[1]

关键词：西太平洋地区, 持续时间, 活动区域, 热带气旋, 气候关系, 低频率, 强度, 跟踪数据, tropical cyclone, frequency, duration, intensity, activity regions

中文摘要：

在热带气旋(TC ) 之中的 Climatological 关系在西方的太平洋上的频率，持续时间，紧张和活动区域基于长期的最好的磁道数据被探索。经常的 TC 出现未必确实在一样的时期暗示 TC 的长持续时间。在在时期的 TC 数字和持续时间之间的关系的三种类型 19452007 在这研究被识别：低频率和短持续时间在 19451955 期间(时期我) ；在 1960 年代(时期 II ) 的高频率和短持续时间；并且在 1990 年代(时期 III ) 的高频率和长持续时间。TC 活动区域在三个时期之中不同。在时期期间我，主要活动区域在菲律宾的海洋东方上(120？？

英文摘要：

Climatological relationships among the tropical cyclone （TC） frequency, duration, intensity and activity regions over the Western Pacific are explored based on long-term best track data. Frequent TC occurrence does not necessarily imply a long duration of TCs in the same periods. Three types of relationship between TC number and duration in the period 1945-2007 were identified in this study： low frequency and short duration during 1945-1955 （Period I）; high frequency and short duration in the 1960s （Period lI）; and high frequency and long duration in the 1990s （Period I1/）. TC activity regions differed among the three periods. During Period I, the main activity regions were over the ocean east of the Philippines （120~-140~E）. During period II, two prevailing storm tracks extended west-northwest between 110~ and 147~E. During period III, TCs had an extensive activity region from 110~ to 160~E. TC intensity is related closely to activity regions. Most strong TCs developed over the ocean far from the Philippines, and had a northwestward track. Our results also show that the relationships between TC frequency, duration and their active re- gions are modulated strongly by broad-scale vertical motion, geopotential height and horizontal wind anomalies.

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