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 

暴雨云团的多尺度识别方法及其在临近预报中的应用

DOI: 10.3878/j.issn.1006-9895.2007.03.03

Keywords: 多尺度识别,层级聚类,跟踪,预报

Full-Text   Cite this paper   Add to My Lib

Abstract:

将一种暴雨云团的多尺度识别方法——层级聚类法,应用于β中尺度对流系统识别及临近预报中。该方法的基本思路是:将笛卡尔坐标下的雷达反射率因子进行聚类,得到比较详细的较小尺度的暴雨云团,然后设定阈值,将云团之间差异小于阈值的进行合并,可以得到较大尺度的云团,逐步放宽合并阈值,可得到更大尺度的云团。选取广州雷达2005年3月的飑线过程和温州2005年9月的台风过程对这种方法的识别结果进行了详细说明,结果表明:该方法能够识别不同系统的β中尺度对流云团,并能识别出其中反射率较强的γ中尺度云团,识别结果合理。采用这种方法识别不同尺度的暴雨云团,有利于跟踪、预报造成中国暴雨主要原因的β中尺度系统,也可兼顾β中尺度系统中的γ中尺度对流单体。根据预报时效的不同,可以选择不同的云团识别尺度。

References

[1]  杨传风.强降雹回波系统与地面中尺度系统的分析.山东气象,1994,14 (4):13~16 Yang Chuanfeng.The analysis of severe hail echo system and MCS on surface.Shandong Meteorology (in Chinese).1994,14 (4):13~16
[2]  应冬梅,郭艳.江西省飑线的雷达回波特征分析.气象,2001,27 (3):42~45 Ying Dongmei,GuoYan.The analysis of the radar echo characteristics of squall line in Jiangxi Province.Meteorology (in Chinese),2001,27 (3):42~45
[3]  杜秉玉,官莉,姚祖庆,等.上海地区强对流天气短时预报系统.南京气象学院学报,2000,23 (2):242~250 Du Bingyu,Guan Li,Yao Zuqing.Et al.Nowcasting system of severe convective weather in Shanghai.Journal of Nanjing Institute of Meteorology (in Chinese),2000,23 (2):242~250
[4]  肖艳姣,汤达章,李中华,等.风暴的自动识别、跟踪与预报.南京气象学院学报,1998,21 (2):223~229 Xiao Yanjiao,Tang Dazhang,Li Zhonghua.Et al.Storm automatic identification,tracking and forecasting.Journal of Nanjing Institute of Meteorology (in Chinese),1998,21 (2):223~229
[5]  陈家慧,张培昌.用天气雷达回波资料作临近预报的BP网络方法.南京气象学院学报.2000,23 (2):284~287 Chen Jiahui,Zhang Peichang.The back propagation network method for nowcasting for using weather radar data.Journal of Nanjing Institute of Meteorology (in Chinese),2000,23 (2):284~287
[6]  贝耐芳,赵思雄.1998年 "二度梅" 期间突发强暴雨系统的中尺度分析.大气科学,2002,26 (4):526~540 Bei Naifang,Zhao Sixiong.Mesoscale analysis of severe local heavy rainfall during the second stage of the 1998 Meiyu season.Chinese Journal of Atmospheric Sciences (in Chinese),2002,26 (4):526~540
[7]  张小玲,陶诗言,张顺利.梅雨锋上的三类暴雨.大气科学,2004,28 (2):187~205 Zhang Xiaoling,Tao Shiyan,Zhang Shunli.Three types of heavy rainstorms associated with the Meiyu front.Chinese Journal of Atmospheric Sciences (in Chinese),2004,28 (2):187~205
[8]  李献州,贺忠.广州台风特大暴雨预报.气象,1995,21 (8):17-22 Li Xianzhou,He Zhong.Forecast of typhoon heavy rainfall in Guangzhou.Meteorology (in Chinese),1995,21 (8):17-22
[9]  盛春岩,蒲一芬,高守亭.多普勒天气雷达资料对中尺度模式短时预报的影响.大气科学,2006,30 (1):93~107 Sheng Chunyan,Pu Yifen,Gao Shouting.Effect of Doppler radar data on nowcasting output of mesoscale model.Chinese Journal of Atmospheric Sciences (in Chinese),2006,30 (1):93~107
[10]  Michael D,Gerry W.TITAN:Thunderstorm identification,tracking,analysis,and nowcasting radar-based methodology.J.Atmos.Oceanic Technol.,1993,1 (6):785~796
[11]  Johnson J T,Pamela M,Witt A,et al.The storm cell identification and tracking algorithm:An enhanced WSR-88D algorithm.Wea.Forecasting,1998,13:263~276
[12]  French M,Krajewski W,Cuykendall R.Rainfall forecasting in space and time using a neural network.J.Hydrol.,1992,137:1~31
[13]  Rinehart R,Garvey E.Three-dimensional storm motion detection by conventional weather radar.Nature,1978,273:287~289
[14]  Tuttle J D,Foote G B.Determination of the boundary layer airflow from a single Doppler radar.J.Atmos.Oceanic Technol.,1999,7:218~232
[15]  Browning K A.Conceptual models of precipitation systems.Wea.Forecasting,1986,1:23~41.
[16]  Lakshmanan V,Rabin R,DeBrunner V.Mutiscale storm identification and forecast.J.Atmos.Res.,2003,4:367~380
[17]  Mueller C,Saxen T,Roberts R,et al.NCAR auto-nowcast system.Wea.Forecasting,2003,18:545~561
[18]  Pierce C E,Rbert E,Seed A W,et al.The nowcasting of precipitation during Sydney 2000:An appraisal of the QPF algorithms.Wea.Forecasting,2004,19:7~21
[19]  Lakshmanan V,Rabin V R,DeBrunner V.Identifying and tracking storms in satellite images.Second Artificial Intelligence Conference,American Meteorological Society,Long Beach,CA,2000,90~95

Full-Text

comments powered by Disqus

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133

WeChat 1538708413