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| 非汛期影响海南热带气旋的活动变化特征 | |
| 引用本文： | 吴胜安,张永领,江志红.非汛期影响海南热带气旋的活动变化特征[J].热带气象学报,2006,22(3):301-307. |
| 作者姓名： | 吴胜安 张永领 江志红 |
| 作者单位： | 1. 海南省气象局气象科学研究所,海南,海口,570203 2. 中山大学地理科学与规划学院,广东,广州,510275 3. 南京信息工程大学,江苏,南京,210044 |
| 摘 要： | 根据1949～2002年共54年的台风资料对非汛期(10月～次年4月)西北太平洋台风活动的气候特点进行了统计分析,指出:非汛期内影响、严重影响海南的热带气旋频次均无明显的减少趋势,其频次存在准10年、15～20年的主周期,其年代际变化表现为1950年代中期～1960年代后期偏少,1970年代前期偏多,1970年代后期偏少,1980年代偏多,1990年代偏少;非汛期内严重影响海南的较强的热带气旋主要出现在拉妮娜年且其年代际变化也存在15～20年的主周期,1950年代后期到1960年代前期活动的热带气旋偏弱,1960年代后期～1970年代前期偏强,1970年代后期偏弱,1980年代偏强,1990年代又偏弱;较强的热带气旋(中心极值940hPa以下)均生成于135°E以东的洋面,而其源地越西,其强度越小;非汛期登陆海南的热带气旋的登陆点均处于海南岛的东侧海岸线上,1970年代中期以后,登陆点有南移趋势,且均以台风形式登陆。 |
| 关 键 词： | 非汛期 严重影响 热带气旋 气候特征 |
| 文章编号： | 1004-4965(2006)03-0301-07 |
| 收稿时间： | 2005-01-04 |
| 修稿时间： | 2005-04-18 |
THE VARIATION CHARACTERISTICS OF HAINAN-INFLUENCING TROPICAL CYCLONES ACTIVITY OFF RAINY SEASONS |
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| WU Sheng-an,ZHANG Yong-ling and JIANG Zhi-hong.THE VARIATION CHARACTERISTICS OF HAINAN-INFLUENCING TROPICAL CYCLONES ACTIVITY OFF RAINY SEASONS[J].Journal of Tropical Meteorology,2006,22(3):301-307. | |
| Authors: | WU Sheng-an ZHANG Yong-ling and JIANG Zhi-hong |
| Institution: | Hainan Provincial Meteorological Station, Haikou 570203, China;School of Geography and Planning, Sun Yat-sen university, Guangzhou 570275, China;Nanjing University of Information Science & Technology, Nanjing 210044, China |
| Abstract: | Analyzing Hainan-influencing North-West Pacific Tropical Cyclones' climate characteristics off the rainy seasons(October to next April) by using 54 years of typhoon data from 1949 to 2002,we have the following preliminary results: TCs Influencing or seriously influencing Hainan have no notable decrease off the rainy seasons during the 54 years.There exist obvious periods of quasi-10 years and 15-20 years in the variation of those TCs' annual frequency,and decadal variability was small from mid-1950s to late 1960s,during late 1970s and late 1990s but was great during early-1970s and 1980s.Strong TCs that seriously influence Hainan mainly appear in La Nina years.There also exist obvious periods of quasi-10 years and 15-20 years in the variation of the intensity of the TCs.The decadal variability is small from mid-50s to late-60s,during late 1970s and during 1990s,but being larger during early-70s and during 1980s;Stronger TCs(with center pressure lower than 940hpa) generate on the ocean surface east of 135oE;the more westward they generate,the weaker they are.The location the TCs land in Hainan during off-rainy seasons are all on the east coast,shifting south after mid-1970s and the landing TCs all appeared as typhoons afterwards. |
| Keywords: | off rainy seasons heavy influence tropic cyclones variation characteristics |
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