CAJ | 학술논문

进入东海的热带气旋（TC）每年有3．2个，转向或者登陆将造成不同的影响。通过对这两类TC登陆或转向前后，形势场和物理量场的合成分析得到：转向类TC，副热带高压（以下简称副高）弱，东侧呈块状；西风带强，离TC近；中高层西风急流明显，急流在向东移动过程中有增强趋势；TC东北方高层辐散增强，在中低层有正涡度平流，涡度平流中心清晰。而登陆类TC，副高强，呈宽带状；西风带弱，离TC远；西风急流不明显，没有增强，高层急流中心位于TC 的西北方和北方；TC 东北方高层没有明显的辐散流出，中低层正涡度平流位于TC的西北方和北侧，涡度平流中心不清晰。转向或登陆前72 h各特点已有显示，前48 h其特征更加明显。
진입동해적열대기선（TC）매년유3．2개，전향혹자등륙장조성불동적영향。통과대저량류TC등륙혹전향전후，형세장화물리량장적합성분석득도：전향류TC，부열대고압（이하간칭부고）약，동측정괴상；서풍대강，리TC근；중고층서풍급류명현，급류재향동이동과정중유증강추세；TC동북방고층복산증강，재중저층유정와도평류，와도평류중심청석。이등륙류TC，부고강，정관대상；서풍대약，리TC원；서풍급류불명현，몰유증강，고층급류중심위우TC 적서북방화북방；TC 동북방고층몰유명현적복산류출，중저층정와도평류위우TC적서북방화북측，와도평류중심불청석。전향혹등륙전72 h각특점이유현시，전48 h기특정경가명현。
There are 3 .2 tropical cyclones (TCs)entering into the East China Sea on average every year. Recurvature or landfall of these TCs will make different effects.The comparative analysis on the situations and physical fields of recurving TCs and landfalling TCs shows that in the case of recurving TCs,subtropi-cal high is weak and the east part of it is in massive shape;westerly belt is strong and close to TC;the middle- and upper-level westerly jets are significant and get intensified as they move eastward;the upper-level divergence at the northeast of TC enhances while notable positive vorticity advection is found in the middle- and low-levels of TC with clear advection center.However,in the case of landfalling TCs,sub-tropical high is strong and in broad belt shape;westerly belt is weak and distant from TC;westerly j et is not notable and is not intensified;the upper-level j et center is located in the northwest and north of TC;no remarkable upper-level divergence occurs in the northeast of TC and the middle- and low-level positive vor-ticity advection is located in the northwest and north of TC with no notable advection center.The charac-teristics above can be seen 72 hours before the recurvature or landfall of TCs,and get much clearer in 48 hours before the events.