北上变性热带气旋对辽东半岛降水的影响

梁军; 陈联寿; 李英; 张彩凤; 张晓梅

北上变性热带气旋对辽东半岛降水的影响

1.
大连市气象台, 辽宁, 大连, 116001
2.
中国气象科学研究院灾害天气国家重点实验室, 北京, 100081
3.
大连市气象局, 辽宁, 大连, 116001

基金项目: 国家重点基础研究发展规划项目(2004CB418301);国家自然科学基金项目(40575018、40675033)共同资助

计量
- 文章访问数: 1147
- HTML全文浏览量: 2
- PDF下载量: 750
- 被引次数: 0
出版历程
- 收稿日期: 2007-03-12
- 修回日期: 2007-08-22

IMPACTS OF TROPICAL CYCLONE EXTRATROPICAL TRANSITION ON THE RAINFALL OVER LIAODONG PENINSULA

1.
Dalian Meteorological Observatory, Dalian 116001, China
2.
Chinese Academy of Meteorological Sciences/LaSW, Beijing 100081, China
3.
Dalian Meteorological Bureau, Dalian 116001, China

摘要

摘要: 9711(Winnie)和0509(Matsa)是两个登陆北上影响辽东半岛的变性台风,Matsa直接登陆辽东半岛,但降水量仅为穿过渤海间接影响辽东半岛的Winnie的一半。分析其变性过程与辽东半岛热带气旋降水的关系发现,Winnie和Matsa的降水差异与其北上期间与西风带系统的相互作用密切相关。Winnie变性北上期间被中纬度西风槽"捕获",发生耦合,高层正湿位涡扰动下传,西风带冷空气与热带气旋暖湿气流相互作用,有利于对流云团的生成、发展,在半岛地区产生大暴雨的降水雨带由多个β中尺度云团组成。Matsa在北上变性过程中,只是靠近高空槽底,没有发生耦合,高层正湿位涡扰动不强,没有与低层环流相互作用,冷空气偏南偏弱,变性过程中半岛地区只有1个β中尺度云团生成,降水量较小。
- 变性 /
- 热带气旋 /
- 辽东半岛 /
- 暴雨
Abstract: Both of Typhoon Winnie (9711) and Matsa (0509) underwent an extratropical transition (ET) process when they moved northward after landfall and affected Liaodong Peninsula. However,Winnie produced half as much rainfall as Matsa,although it did not strike Liaodong Peninsula directly as the latter. The relations between ET processes and the precipitation over Liaodong Peninsula are examined. The result shows that the precipitation difference between Winnie and Matsa is related to the interactions between the westerly systems and typhoons during their ET processes. Winnie coupled with upper westerly trough when it moved to the mid-latitude,and the positive anomaly of moist potential vorticity (MPV) transported downward from the upper troposphere over the remnant circulation of TC. It was favorable to the activity of warm air and cold air and caused convective cloud clusters to develop. It is found that the rain belt composes of several meso-βcloud clusters over the Liaodong Peninsula resulting in heavy rainfall. On the other hand,Matsa decouples with an upper trough during its ET process and the positive anomaly of MPV on upper troposphere and its downward transportation is weak. It is found that only one meso-βcloud cluster occurred in Matsa's rain belt during its ET process that tended to lessen rainfall over Liaodong Peninsula.
- extratropical transition /
- tropical cyclone /
- Liaodong Peninsula /
- heavy rainfall

HTML全文

参考文献(24)

[1]	陈联寿,丁一汇.西太平洋台风概论[M].北京:科学出版社,1979:423-428;462-474.
[2]	KLEIN P M,HARR P A,ELSBERRY R L.Extratropical transition of western North Pacific tropical cyclone:Midlatitude contributions to intensification[J].Mon Wea Rev,2002,130(9):2 240-2 259.
[3]	李英,陈联寿,张胜军.登陆我国热带气旋的统计特征[J].热带气象学报,2004,20(1):14-23.
[4]	袁子鹏,张立祥.黄渤海登陆热带气旋活动的统计分析[J].气象,2005,31(6):39-42.
[5]	梁军,陈联寿.影响辽东半岛热带气旋运动、强度和影响的特征[J].热带气象学报,2005,21(4):410-419.
[6]	陈联寿.台风登陆问题研究进展[C] //第十一届全国热带气旋科学讨论会摘要文集.北京:中国气象科学研究院,1999:11-13.
[7]	CHEN L S.An overview on the impact of interaction between low-mid latitude circulation on rainfall and tropical cyclone behavior[C] //24th Conference on Hurricane and Tropical Meteorology.American Meteoroloical Society,2000:63-65..
[8]	孙力,郑秀雅.北上热带气旋变性发展过程的诊断分析[J].气象,1993,17(10):3-8.
[9]	朱佩君,郑永光,陶祖钰.发生在中国大陆的台风变性加强过程的分析[J].热带气象学报,2003,19(2):157-162.
[10]	朱佩君,郑永光,陶祖钰.台风变性再度发展的动能收支分析[J].北京大学学报(自然科学版),2005,41(1):93-103.
[11]	李英,陈联寿,雷小途.Winnie(1997)和Bilis(2000)变性过程的湿位涡分析[J].热带气象学报,2005,21(2):142-152.
[12]	李英,陈联寿,雷小途.高空槽对9711号台风变性加强影响的数值研究[J].气象学报,2006,64(5):552-563.
[13]	韩桂荣,何金海,樊永富,等.变形场锋生对0108登陆台风温带变性和暴雨形成作用的诊断分析[J].气象学报,2005,63(4):468-476.
[14]	HART R E,EVANS J L.A Climatology of the Extratropical Transition of Atlantic Tropical Cyclones[J].J Climate,2001,14(4):546-564.
[15]	SINCLAIR M R.Extratropical Transition of Southwest Pacific Tropical Cyclone Ⅰ:Climatology and Mean Structure Changes[J].Mon Wea Rev,2002,130(3):590-609.
[16]	赵宇,吴增茂,刘诗军,等.由变性台风环流引发的山东特大暴雨天气的位涡场分析[J].热带气象学报,2005,21(1):34-43.
[17]	文莉娟,程麟生,左洪超,等."98.5"华南前汛期暴雨的湿位涡异常诊断:质量和热力强迫的数值分析[J].热带气象学报,2006,22(5):447-453.
[18]	袁佳双,寿绍文.高低空位涡扰动、非绝热加热与气旋的发生发展[J].热带气象学报,2002,18(2):121-130.
[19]	何立富,尹洁,陈涛,等.0509台风麦莎的结构与外围暴雨分布特征[J].气象,2006,32(3):93-100.
[20]	SINCLAIR M R.Synoptic-scale diagnosis of the extratropical transition of a southwest Pacific tropical cyclone[J].Mon Wea Rev,1993,121(4):941-960.
[21]	杨引明,陶祖钰.上海"0185"特大暴雨热带云团的研究[C] //第十二届全国热带气旋科学讨论会论文摘要文集.北京:中国气象科学研究院,2002:281-286.
[22]	HOSKINS B J,MCINTYRE M E,ROBERTSON A W.On the use and significance of isentropic potential vorticity maps[J].Qauart J Roy Meteor Soc,1985,111(470):877-946.
[23]	王建中,马淑芬,丁一汇.位涡在暴雨成因分析中的应用[J].应用气象学报,1996,7(1):19-27.
[24]	吴国雄,蔡雅萍.风垂直切变和下滑倾斜涡度发展[J].大气科学,1997,21(3):273-282.