Re-examination of Trends Related to Tropical Cyclone Activity over the Western North Pacific Basin |
| |
| Authors: | SONG Jinjie HAN Juejing LI Siji WANG Yuan WU Liguang |
| |
| Affiliation: | Key Laboratory of Mesoscale Severe Weather/MOE, and School of Atmospheric Sciences, Nanjing University, Nanjing 210093,Key Laboratory of Mesoscale Severe Weather/MOE, and School of Atmospheric Sciences, Nanjing University, Nanjing 210093,Key Laboratory of Mesoscale Severe Weather/MOE, and School of Atmospheric Sciences, Nanjing University, Nanjing 210093,Key Laboratory of Mesoscale Severe Weather/MOE, and School of Atmospheric Sciences, Nanjing University, Nanjing 210093,Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210093 |
| |
| Abstract: | In order to re-examine some trends related to tropical cyclones (TCs) overthe western North Pacific since 1949, the unreliable maximum sustained wind(Vmax) recorded in the 1949--1978 TC best-track data from the ShanghaiTyphoon Institute was modified based on the wind--pressure relationships(WPRs) in this study. Compared to the WPR scheme based on the cyclostrophicbalance, the WPR scheme based on the gradient balance could give a betterfit to TCs under higher wind speeds and could introduce smaller estimatederrors for TCs locating at higher latitudes as well as TCs landing on thecontinent. After the Vmax modification based on minimum sea-levelpressure and TC center latitude, the revised annual number of category 4--5typhoons shows no long-term trend, while the potential destructivenessmeasured by power-dissipation index decreases slightly, and this trend isnot significant in the period 1949--2008. |
| |
| Keywords: | tropical cyclone wind--pressure relationship gradient balance power-dissipation index |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
| 点击此处可从《大气科学进展》浏览原始摘要信息 |
|
点击此处可从《大气科学进展》下载全文 |
|
