STATISTICAL AND COMPOSITE ANALYSIS OF RELATIONSHIP BETWEEN THE NUMBER OF CONVECTIVE CORES AND THE CHARACTERISTICS OF TBB WITHIN THE TROPICAL CYCLONE CIRCULATION AND ITS INTENSITY  

作　　者：曹钰 岳彩军 寿绍文 

机构地区：[1]Pudong New Weather Office,Shanghai Meteorological Bureau [2]Shanghai Typhoon Institute,China Meteorological Administration [3]Jiangsu Key Laboratory of Disaster Weather/Nanjing University of Information Science and Technology

出　　处：《Journal of Tropical Meteorology》2015年第1期1-13,共13页热带气象学报（英文版）

基　　金：National Natural Science Foundation of China(NSFC)(40875025,41175050,41475039 and41475041);Shanghai Natural Science Foundation of China(08ZR1422900);Public Sector(Meteorology)Research of China(GYHY201306012)

摘　　要：Based on the data(including radius of maximum winds) from the JTWC(Joint Typhoon Warning Center),the tropical cyclones(TCs) radii of the outermost closed isobar, TCs best tracks from Shanghai Typhoon Institute and the Black Body Temperature(TBB) of the Japanese geostationary meteorological satellite M1 TR IR1, and combining13 tropical cyclones which landed in China again after visiting the island of Taiwan during the period from 2001 to2010, we analyzed the relationship between the number of convective cores within TC circulation and the intensity of TC with the method of convective-stratiform technique(CST) and statistical and composite analysis. The results are shown as follows:(1) The number of convective cores in the entire TC circulation is well corresponding with the outer spiral rainbands and the density of convective cores in the inner core area increases(decreases) generally with increasing(decreasing) TC intensity. At the same time, the number of convective cores within the outer spiral rainbands is more than that within the inner core and does not change much with the TC intensity. However, the density of convective cores within the outer spiral rainbands is lower than that within the inner core.(2) The relationship described above is sensitive to landing location to some extent but not sensitive to the structure of TC.(3) The average value of TBB in the inner core area increases(decreases) generally with increasing(decreasing) of TC intensity, which is also sensitive to landing situation to some extent. At the same time, the average value of TBB within the outer spiral rainbands is close to that within the entire TC circulation, and both of them are more than that within the inner core. However, they do not reflect TC intensity change significantly.(4) The results of statistical composite based on convective cores and TBB are complementary with each other, so a combination of both can reflect the relationship between TC rainbands and TC intensity much better.Based on the data（including radius of maximum winds） from the JTWC（Joint Typhoon Warning Center）,the tropical cyclones（TCs） radii of the outermost closed isobar, TCs best tracks from Shanghai Typhoon Institute and the Black Body Temperature（TBB） of the Japanese geostationary meteorological satellite M1 TR IR1, and combining13 tropical cyclones which landed in China again after visiting the island of Taiwan during the period from 2001 to2010, we analyzed the relationship between the number of convective cores within TC circulation and the intensity of TC with the method of convective-stratiform technique（CST） and statistical and composite analysis. The results are shown as follows：（1） The number of convective cores in the entire TC circulation is well corresponding with the outer spiral rainbands and the density of convective cores in the inner core area increases（decreases） generally with increasing（decreasing） TC intensity. At the same time, the number of convective cores within the outer spiral rainbands is more than that within the inner core and does not change much with the TC intensity. However, the density of convective cores within the outer spiral rainbands is lower than that within the inner core.（2） The relationship described above is sensitive to landing location to some extent but not sensitive to the structure of TC.（3） The average value of TBB in the inner core area increases（decreases） generally with increasing（decreasing） of TC intensity, which is also sensitive to landing situation to some extent. At the same time, the average value of TBB within the outer spiral rainbands is close to that within the entire TC circulation, and both of them are more than that within the inner core. However, they do not reflect TC intensity change significantly.（4） The results of statistical composite based on convective cores and TBB are complementary with each other, so a combination of both can reflect the relationship between TC rainbands and TC intensity m

关 键 词：synoptic meteorology tropical cyclone intensity number of convective cores TBB statistical composite 

分 类 号：P444[天文地球—大气科学及气象学]