全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
大气科学  2007 

台风Rananim登陆期间地形对其降水和结构影响的数值模拟试验

DOI: 10.3878/j.issn.1006-9895.2007.02.05

Keywords: 台风,地形影响,数值模拟

Full-Text   Cite this paper   Add to My Lib

Abstract:

应用非静力平衡中尺度模式MM5(V3.6),对0414号台风Rananim在登陆期间移动路径和所产生的降水进行了数值模拟研究,模式较好地再现了台风Rananim的移动路径和所产生的降水,但模拟的过程降雨量与实况值还有所偏差。多普勒雷达探测资料表明,台风Rananim登陆期间,强回波带出现在台风移动的右前方,螺旋云带中镶嵌着大量的对流云团;垂直液态水含量的高值区出现在台风中心的西北侧。作者通过在浙江、福建东部沿海一带进行有无地形的数值对比试验,着重讨论了台风登陆期间地形对台风降水、台风结构特征变化的影响。结果表明:(1)台风登陆期间,地形的影响对台风降雨量有明显的增幅作用。由地形强迫产生的降雨量和地形走向相一致,迎风坡降雨量增加,背风坡降雨量减少,地形影响使浙江东部一带增加的平均降雨量约占该地区模拟平均总降雨量的40%左右。(2)台风登陆期间,地形的强迫作用有利于在低层台风眼的西北侧形成明显的辐合带,高层为明显的辐散区;在中尺度环流场上,地形的影响有利于台风中心西北侧低层中尺度气旋性涡旋系统的发生发展,从而激发中尺度对流云团,形成中尺度雨团,造成了台风中心南北雨区和雨量的不对称分布。(3)地形的强迫作用,可以使台风流场局部发生改变。当地形强迫产生与台风环流同向的中尺度扰动时,将使台风环流局部明显增强;当地形强迫产生与台风环流反向的中尺度扰动时,将使台风环流局部明显减弱。(4)台风登陆期间,地形的影响可以使台风靠近陆地一侧眼壁内的垂直上升速度增大,位涡明显增强,从而造成台风涡旋的增强。

References

[1]  Shapiro L J,Willoughby H E.The response of the balanced hurricanes to local sources of heat and momentum.J.Atmos.Sci.,1982,39:378~394
[2]  Zhang D L,Liu Y B,Yau M K.A multiscale numerical study of hurricane Andrew (1992).Part Ⅲ:Dynamically induced vertical motion.Mon.Wea.Rev.,2000,128:3772~3778
[3]  Zhang D L,Liu Y B,Yau M K.A multiscale numerical study of hurricane Andrew (1992).Part Ⅳ:Unbalanced flows.Mon.Wea.Rev.,2001,129:92~107
[4]  Zhang D L,Liu Y B,Yau M K.A multiscale numerical study of hurricane Andrew (1992).Part Ⅴ:Inner-core thermodynamics.Mon.Wea.Rev.,2002,130:2745~2763
[5]  陈联寿,徐祥德,罗哲贤,等.热带气旋动力学引论.北京:气象出版社,2002.168~313 Chen L S,Xu X D,Luo Z X,et al.Introduction to Tropical Cyclone Dynamics (in Chinese).Beijing:China Meteorological Press,2002.168~313
[6]  蔡则怡,宇如聪.LASG η坐标有限区域数值预报模式对一次登陆台风特大暴雨的数值试验.大气科学,1997,21 (4):459~471 Cai Z Y,Yu R C.A numerical simulation of an extraordinary storm rainfall caused by a landing typhoon with LASG mesoscale model.Chinese Journal of Atmospheric Sciences (Scientia Atmospherica Sinica) (in Chinese),1997,21 (4):459~471
[7]  钮学新,杜惠良,刘建勇.0216号台风降水及影响降水机制的数值模拟试验.气象学报,2005,63 (1):57~68 Niu X X,Du H L,Liu J Y.The numerical simulation of rainfall and precipitation mechanism associated with typhoon Sinlaku (0216).Acta Meteorologica Sinica (in Chinese),2005,63 (1):57~68
[8]  袁金南,万齐林.岛屿地形和对流凝结潜热对登陆台风"黄蜂"影响的数值研究.热带气象学报,2003,19 (增刊):81~87 Yuan J N,Wan Q L.Numerical study on the effect of island topography and convective condensation heating on landfall typhoon "Vongfong".Journal of Tropical Meteorology (in Chinese),2003,19 (supplement):81~87
[9]  袁金南,万齐林.台风 "玛姬" (9903) 数值模拟试验.热带气象学报,2003,19 (3):317~322 Yuan J N,Wan Q L.Numerical simulation experiments of the typhoon Maggie.Journal of Tropical Meteorology (in Chinese),2003,19 (3):317~322
[10]  解以扬,徐祥德.登陆台风暴雨地形增幅的数值试验.南京气象学院学报,1993,19 (4):451~456 Xie Y Y,Xu X D.Numerical experiments on amplitude increment of landfall typhoon rainstorm caused by topographic forcing.Journal of Nanjing Institute of Meteorology (in Chinese),1993,19 (4):451~456
[11]  Wu C C.Numerical simulation of typhoon Gladys (1994) and its interaction with Taiwan terrain using the GFDL hurricane model.Mon.Wea.Rev.,2001,129:1533~1549
[12]  Wu C C,Yen T H,Kuo Y H.Rainfall simulation associated with typhoon Herb (1996) near Taiwan.Part Ⅰ:The topographic effect.Weather and Forecasting,2002,17:1001~1015
[13]  余晖,吴国雄.湿斜压性与热带气旋强度突变.气象学报,2001,59 (4):440~449 Yu H,Wu G X.Moist baroclinity and abrupt intensity change of tropical cyclone.Acta Meteorologica Sinica (in Chinese),2001,59 (4):440~449
[14]  高守亭,雷霆,周玉淑.强暴雨系统中湿位涡异常的诊断分析.应用气象学报,2002,13 (6):662~670 Gao S T,Lei T,Zhou Y S.Diagnostic analysis of moist potential vorticity anomaly in torrential rain systems.Journal of Applied Meteorological Science (in Chinese),2002,13 (6):662~670
[15]  Guinn T A,Schubert W H.Hurricane spiral bands.J.Atmos.Sci.,1993,50:3380~3403
[16]  朱佩君,陈敏,陶祖钰,等,登陆台风Winnie (1997) 的数值模拟研究 Ⅰ:结果检验和云系的模拟.气象学报,2002,60 (5):553~559 Zhu P J,Chen M,Tao Z Y,et al.Numerical simulation of typhoon Winnie (1997) after landfall.Part Ⅰ:Model verification and model clouds.Acta Meteorologica Sinica (in Chinese),2002,60 (5):553~559
[17]  朱佩君,陈敏,陶祖钰,等,登陆台风Winnie (1997) 的数值模拟研究 Ⅱ:结构演变特征分析.气象学报,2002,60 (5):560~567 Zhu P J,Chen M,Tao Z Y,et al.Numerical simulation of typhoon Winnie (1997) after landfall.Part Ⅱ:Structure evolution analysis.Acta Meteorologica Sinica (in Chinese),2002,60 (5):560~567
[18]  Liu Y B,Zhang D L,Yau M K.A multiscale numerical study of hurricane Andrew (1992).Part Ⅰ:Explicit simulation and verification.Mon.Wea.Rev.,1997,125:3073~3093
[19]  Liu Y B,Zhang D L,Yau M K.A multiscale numerical study of hurricane Andrew (1992).Part Ⅱ:Kinematics and inner-core structures.Mon.Wea.Rev.,1999,127:2597~2616
[20]  陈联寿,罗哲贤,李英.登陆热带气旋研究的进展.气象学报,2004,62 (5):541~549 Chen L S,Luo Z X,Li Y.Research advances on tropical cyclone landfall process.Acta Meteorologica Sinica (in Chinese),2004,62 (5):541~549
[21]  陈联寿,孟智勇.我国热带气旋研究十年进展.大气科学,2001,25 (3):420~432 Chen L S,Meng Z Y.An overview on tropical cyclone research progress in China during the past ten years.Chinese Journal of Atmospheric Sciences (in Chinese),2001,25 (3):420~432

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133