利用信号场作深圳宝安机场的雷暴分类研究  

A Study on Classification of Thunderstorm by Using the Signal Field at Shenzhen Baoan Airport

作　　者：余岸雄[1,2] 黄嘉佑[1] 张焱[3] 白莹莹[3] 

机构地区：[1]北京大学物理学院大气与海洋科学系,北京100871 [2]民航深圳空管站,深圳518128 [3]重庆市气象局,重庆401147

出　　处：《科学技术与工程》2012年第31期8349-8354,共6页Science Technology and Engineering

摘　　要：利用深圳宝安机场2001～2010年雷暴观测资料和NCEP/NCAR再分析资料,运用统计方法研究近10年来雷暴发生的气候特征。利用主成分分析方法提取宝安机场夏季雷暴日500hPa高度信号场共同特征,并根据主成分分析前3个模态归纳出3种易出现雷暴的天气类型:台风型,高空槽、切变线型和副热带高压型;其中近10年来副热带高压型在夏季出现的频次最高。从年际变化来看,高空槽、切变型和台风型都是呈减少趋势,而副热带高压型无明显变化趋势。Based on the thunderstorm observation data Airport for the period of 2001 to 2010; the climatic change and NCEP/NCAR reanalysis data in Shenzhen Baoan characteristics analysis of the thunderstorms are studied by means of mathematical statistic. The common features of 500hPa-signal field of summer thunderstorms can be ex- tracted by using the principal component analysis method. According to the first three vibration modes, the weather systems to benefit thunderstorms could be classified to three synoptic patterns （typhoon, upper trough and shear line, subtropical high）. In the recent 10 years, the subtropical high pattern is the highest frequencies in summer. From the inter-annual change of view, the upper trough and shear line pattern and the typhoon pattern are on a de- clining trend, while the subtropical high pattern had no obvious change trend.

关 键 词：雷暴 信号场 主成分分析 

分 类 号：P445.5[天文地球—大气科学及气象学]