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  2008 

气候平均场上西太平洋副热带高压双脊线过程可能成因的动力诊断分析

DOI: 10.3878/j.issn.1006-9895.2008.02.17

Keywords: 西太平洋副热带高压双脊线,季风槽,准10天振荡,两层半大气模式

Full-Text   Cite this paper   Add to My Lib

Abstract:

利用NCEP-DOE再分析数据集II,诊断分析了气候平均场上6次西太平洋副热带高压双脊线过程,借助一个两层半大气模式,从动力学上初步揭示了西太平洋热带大气准10天振荡(QuasiTen-dayOscillation,简称QTO)向西北方向传播与季风槽东伸西撤之间的相互作用过程,探讨了气候平均场上西太副高双脊线可能的形成机制。分析表明季风槽准10天东西振荡是气候平均场上西太副高双脊线形成的主要原因,而季风槽东伸西撤与QTO传播密切相关。进一步分析发现,QTO向西北方向传播,东风切变作用于斜压辐散的经向梯度,在对流中心北侧生成正扰动涡度。QTO在季风槽东侧激发的气旋性扰动涡度,诱导季风槽东伸,侵入副高,造成副高外围变形,形成双脊线。因此,形成西太副高双脊线的主要原因之一可能是西太平洋热带大气QTO。尽管季风槽东伸直接引起副高双脊线发生,但是它只不过是受QTO影响的一种表现。本文仅为诊断结果,其结果还有待于模式敏感性试验的验证。

References

[1]  陶诗言,徐淑英,郭其蕴.夏季东亚热带和副热带地区经向和纬向环流的特征.气象学报,1962,32 (1):1~8 Tao Shiyan,Xu Shuying,Guo Qiyun.Meridional and zonal circulation features over eastern Asian tropical and subtropical regions during summer.Acta Meteor.Sinica (in Chinese),1962,32 (1):1~8
[2]  占瑞芬,李建平,何金海.西太平洋副热带高压双脊线及其对1998年夏季长江流域 "二度梅" 的影响.气象学报,2004,62 (3):294~307 Zhan Ruifen,Li Jianping,He Jinhai.Influence of the double ridges of west Pacific subtropical high of the second Meiyu over the Yangtze River valley during 1998.Acta Meteor.Sinica (in Chinese),2004,62 (3):294~307
[3]  占瑞芬,李建平,何金海.北半球副热带高压双脊线的统计特征.科学通报,2005,50 (18):2022~2026 Zhan Ruifen,Li Jianping,He Jinhai.Climatological characteristics of the double ridges of subtropical high in the Northern Hemisphere.Chinese Science Bulletin (in Chinese),2005,50 (18):2022~2026
[4]  祁莉,何金海,占瑞芬,等.1962年西太平洋副热带高压双脊线演变过程的分析.大气科学,2006,30 (4):682~692 Qi Li,He Jinhai,Zhan Ruifen,et al.Characteristics of the western Pacific subtropical high double ridges process in 1962.Chinese Journal of Atmospheric Sciences (in Chinese),2006,30 (4):682~692
[5]  祁莉,管兆勇,张祖强,等.气候平均场中的西太平洋副热带高压双脊线特征及其与季风槽准10天振荡的关系.大气科学,2008,32 (1):Qi Li,Guan Zhaoyong,Zhang Zuqiang,et al.Climatological view on double ridges process of the western Pacific subtropical high and its relation to quasi-10-day oscillation of monsoon.Chinese Journal of Atmospheric Sciences (in Chinese),2008,32 (1):
[6]  Kanamitsu M,Ebisuzaki W,Woollen J,et al.NCEP-DOE AMIP-Ⅱ reanalysis (R-2).Bull.Amer.Meteor.Soc.,2002,11:1631~1643
[7]  王慧,丁一汇,何金海.西北太平洋夏季风的气候学研究.气象学报,2005,63 (4):418~430 Wang Hui,Ding Yihui,He Jinhai.The climate research of summer monsoon over the western North Pacific.Acta Meteor.Sinica (in Chinese),2005,63 (4):418~430
[8]  黄士松,汤明敏,霍义强,等.副热带高压位置一年中南北变动的一些特征及其意义.南京大学学报 (气象学),1962,(2):41~56 Huang Shisong,Tang Mingmin,Huo Yiqiang,et al.Some characteristics and meaning of the progression northward and retrogression southward of the subtropical high.J.Nanjing University (Meteorology) (in Chinese),1962,(2):41~56
[9]  黄士松,余志豪.副热带高压结构及其同大气环流有关问题的研究.气象学报,1962,31 (4):339~359 Huang Shisong,Yu Zhihao.Structures of subtropical high and associated problems of generation circulation.Acta Meteor.Sinica (in Chinese),1962,31 (4):339~359
[10]  张培群.副热带高压双脊线位置移动的动力学方程及其诊断研究.兰州大学大气科学系博士学位论文.1997 Zhang Peiqun.Dynamical equation and diagnosis of subtropical high ridge line movement.Ph.D.Dissertation (in Chinese),Department of Atmospheric Sciences,Lanzhou University,1997
[11]  张琼,钱永甫,张学洪.南亚高压的年际和年代际变化.大气科学,2000,24 (1):67~78 Zhang Qiong,Qian Yongfu,Zhang Xuehong.Interannual and interdecadal variations of the South Asia high.Chinese Journal of Atmospheric Sciences (in Chinese),2000,24 (1):67~78
[12]  吴国雄,丑纪范,刘屹岷,等.副热带高压形成和变异的动力学问题.北京:科学出版社,2002.294pp Wu Guoxiong,Chou Jifan,Liu Yimin,et al.Dynamics of the Formation and Variation of Subtropical Anticyclones (in Chinese).Beijing:Science Press,2002.294pp
[13]  何金海,温敏,施晓晖,等.南海夏季风建立期间副高带断裂和东撤及其可能机制.南京大学学报 (自然科学),2002,38 (3):318~330 He Jinhai,Wen Min,Shi Xiaohui,et al.Splitting and eastward withdrawal of the subtropical high belt during the onset of the South China Sea summer monsoon and their possible mechanism.Journal of Nanjing University (Natural Sciences) (in Chinese),2002,38 (3):318~330
[14]  Lu Riyu.Indices of the summertime western North Pacific subtropical high.Adv.Atmos.Sci.,2002,19 (6):1004~1028
[15]  Wang Bin,Xu Xihua.Northern Hemisphere summer monsoon singularities and climatological intraseasonal oscillation.J.Climate,1997,10:1071~1085
[16]  Teng Haiyan,Wang Bin.Interannual variations of the boreal summer intraseasonal oscillation in the Asian-Pacific region.J.Climate,2003,16:3572~3584
[17]  Li Tim,Wang Bin.A review on the western North Pacific monsoon:Synoptic-to-interannual variabilities.Terrestrial,Atmospheric and Oceanic Sciences,2005,16:285~314
[18]  Jiang Xianan,Li Tim,Wang Bin.Structures and mechanisms of the northward propagating boreal summer intraseasonal oscillation.J.Climate,2004,17:1022~1039

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133