气象与环境学报
氣象與環境學報
기상여배경학보
JOURNAL OF METEOROLOGY AND ENVIRONMENT
2014年
3期
10-17
,共8页
登陆台风%不对称结构%水汽图像%冷空气%θse场
登陸檯風%不對稱結構%水汽圖像%冷空氣%θse場
등륙태풍%불대칭결구%수기도상%랭공기%θse장
Landfalling typhoon%Asymmetric structure%Water vapor image%Cold air%θse field
利用地面加密观测资料、FY-2E卫星TBB和水汽图像资料、NCEP 1°×1°再分析资料综合分析了2012年第10号台风“达维”的不对称结构特征及成因。结果表明：台风“达维”登陆后在云系结构、降水落区、高低层风场等均表现出不对称分布，其中暴雨主要分布在台风中心北到东北侧；通过FY-2 E水汽图像分析清晰地揭示了这种不对称结构的演变，台风西侧干下沉暗区切断了西南侧水汽输送，使得台风中心西侧和南侧对流云系减弱消失，而东南侧一直存在一水汽羽伸入台风环流为其提供水汽和能量。同时，强高空辐散、弱垂直风切变以及明显的上升运动，有利于台风“达维”北到东北侧对流云系的发展维持，引发强降水；高空槽带来的冷空气侵入台风环流内部，破坏了它的暖心结构，使得台风“达维”在渤海海面填塞消失。
利用地麵加密觀測資料、FY-2E衛星TBB和水汽圖像資料、NCEP 1°×1°再分析資料綜閤分析瞭2012年第10號檯風“達維”的不對稱結構特徵及成因。結果錶明：檯風“達維”登陸後在雲繫結構、降水落區、高低層風場等均錶現齣不對稱分佈，其中暴雨主要分佈在檯風中心北到東北側；通過FY-2 E水汽圖像分析清晰地揭示瞭這種不對稱結構的縯變，檯風西側榦下沉暗區切斷瞭西南側水汽輸送，使得檯風中心西側和南側對流雲繫減弱消失，而東南側一直存在一水汽羽伸入檯風環流為其提供水汽和能量。同時，彊高空輻散、弱垂直風切變以及明顯的上升運動，有利于檯風“達維”北到東北側對流雲繫的髮展維持，引髮彊降水；高空槽帶來的冷空氣侵入檯風環流內部，破壞瞭它的暖心結構，使得檯風“達維”在渤海海麵填塞消失。
이용지면가밀관측자료、FY-2E위성TBB화수기도상자료、NCEP 1°×1°재분석자료종합분석료2012년제10호태풍“체유”적불대칭결구특정급성인。결과표명：태풍“체유”등륙후재운계결구、강수락구、고저층풍장등균표현출불대칭분포，기중폭우주요분포재태풍중심북도동북측；통과FY-2 E수기도상분석청석지게시료저충불대칭결구적연변，태풍서측간하침암구절단료서남측수기수송，사득태풍중심서측화남측대류운계감약소실，이동남측일직존재일수기우신입태풍배류위기제공수기화능량。동시，강고공복산、약수직풍절변이급명현적상승운동，유리우태풍“체유”북도동북측대류운계적발전유지，인발강강수；고공조대래적랭공기침입태풍배류내부，파배료타적난심결구，사득태풍“체유”재발해해면전새소실。
Based on the surface intensive observed meteorological data,the TBB data from FY-2E satellite and the NCEP 1°×1°reanalysis data,the characteristics of the asymmetric structure of the typhoon Damrey(code 1210) and its forming reason were analyzed.The results indicate that the cloud system structure,precipitation falling area and upper and lower wind fields for the typhoon Damrey are all asymmetric after landfall.The heavy rainstorm mainly appears in the northern and northeastern sides of the center of typhoon Damrey.The evolution of the asym-metric structure could be found obviously by the FY-2 E water vapor images.The dark area located in the western side of typhoon cuts off the southwestern transfer of water vapor,which makes advective cloudsystem in the west-ern and southern sides of typhoon center weakened and disappeared,while water vapor plume from the southeast goes into typhoon circulation and provides water vapor and energy for typhoon.At the same time,strong upper di-vergence,weakly vertical wind shear and evident upward movement are all favorable for enhancement and mainte-nance of advective cloudsystem to the northeastern side of the typhoon Damrey,which could trigger torrential rain. Cold air brought by upper trough intrudes into inside of typhoon and destroys its warm-core structure,which makes typhoon Damrey disappear on the Bohai Sea.
