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 

一次暴雨过程的EOF分析

DOI: 10.3878/j.issn.1006-9895.2007.02.13

Keywords: 暴雨,EOF分析,相轨线

Full-Text   Cite this paper   Add to My Lib

Abstract:

在用21层η坐标细网格模式对1998年7月21~22日发生在武汉地区的一次持续性特大暴雨过程数值模拟的基础上,利用较高时空分辨的模式输出结果对暴雨过程做经验正交函数分解(EOF分析)尝试。结果表明:EOF第1主分量的空间分布代表典型的暴雨环境背景场的低值系统;EOF第2主分量的空间分布与人字形切变线(西部为冷式切变,东部为暖式切变)相联系,是影响这次暴雨的重要形势场;利用相轨线分析方法发现,暴雨过程中EOF第1主分量和EOF第2主分量的时间系数在暴雨临近阶段,两者正相关,激发暴雨,在暴雨后期两者负相关,促使这次暴雨趋于减弱结束。

References

[1]  Pearson K.On lines and plans of closest fit to system of points in space.Philosophical Magazine,1902,6 (2):559~572
[2]  Lorenz E N.The predictability of hydrodynamic flow.Transactions of the New York Academy of Sciences,1963,25:409~432
[3]  邓爱军,陶诗言,陈烈庭.我国汛期降水的EOF分析.大气科学,1989,13 (3):289~295 Deng Aijun,Tao Shiyan,Chen Lieting.EOF expansion for China flood season precipitation.Chinese Journal of Atmospheric Sciences (Scientia Atmospherica Sinica) (in Chinese),1989,13 (3):289~295
[4]  朱抱真,张瑞雪,林学椿.利用EOF相空间分析东亚梅雨旱涝长期过程的初步研究.大气科学,2001,25 (6):817~826 Zhu Baozhen,Zhang Ruixue,Lin Xuechun.A preliminary study of the Meiyu long-range processes in EOF phase space.Chinese Journal of Atmospheric Sciences (in Chinese),2001,25 (6):817~826
[5]  李崇银,吴静波.索马里跨赤道气流对南海夏季风爆发的重要作用.大气科学,2002,26 (2):185~192 Li Chongyin,Wu Jingbo.Important role of the Somalian cross-equator flow in the onset of the South China Sea summer monsoon.Chinese Journal of Atmospheric Sciences (in Chinese),2002,26 (2):185~192
[6]  丁裕国,梁建茵,刘吉峰.EOF/PCA诊断气象变量场问题的新探讨.大气科学,2005,29 (2):307~313 Ding Yuguo,Liang Jianyin,Liu Jifeng.New research on diagnoses of meteorological variable fields using EOF/PCA.Chinese Journal of Atmospheric Sciences (in Chinese),2005,29 (2):307~313
[7]  宗海锋,张庆云,陈烈庭.梅雨期中国东部降水的时空变化及其与大气环流、海温的关系.大气科学,2006,30 (6):1189~1197 Zong Haifeng,Zhang Qingyun,Chen Lieting.Temporal and spatial variations of precipitation in eastern China during the Meiyu period and their relationships with circulation and sea surface temperature.Chinese Journal of Atmospheric Sciences (in Chinese),2006,30 (6):1189~1197
[8]  宇如聪.一个η坐标有限区域数值预报模式对1993年中国汛期降水的实时预报试验.大气科学,1994,18 (3):284~292 Yu Rucong.A test for numerical weather prediction of real-time for China flood season precipitation in 1993 by a regional η-coordinate model.Chinese Journal of Atmospheric Sciences (in Chinese),1994,18 (3):284~292
[9]  宇如聪,徐幼平.AREM及其对2003年汛期降水的模拟.气象学报,2004,62 (6):718~724 Yu Rucong,Xu Youping.AREM and its simulations on the daily rainfall in summer in 2003.Acta Meteorologica Sinica (in Chinese),2004,62 (6):718~724
[10]  施能.气象科研与预报中的多元分析方法.北京:气象出版社,1995.344pp Shi Neng.Multivariate Analysis Method in Weather Scientific Research and Forecast (in Chinese).Beijing:China Meteorological Press,1995.344pp
[11]  North G R,Bell T,Cahalan R,et al.Sampling errors in the estimation of empirical orthogonal function.Mon.Wea.Rev.,1982,110:699~706

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133