江淮持续性暴雨过程前30～60d低频主振荡型特征OA
The Characteristics of the Principal Oscillation Patterns of the 30-60 d Intra-seasonal Oscillation before the Persistent Heavy Rainfall (PHR) Events over the Vicinity of the Yangtze River Valley
利用1951～2010年NCEP／NCAR逐日再分析资料，采用改进后的一阶Butterworth带通滤波、主振荡分析（ POP）和合成分析，研究了近60年4～8月全球大气低频主振荡型特征及其与江淮流域持续性暴雨过程的关系。结果表明，4～8月全球850 hPa高度场存在IN－WPO型（赤道印度洋－西太平洋型）和TA－WE型（热带大西洋－西欧型）2个30～60 d主振荡型。过程前，不同振荡型的时域变化特征明显，反映了全球大气30～60 d低频振荡的显…查看全部>>
The principal oscillation patterns of global atmospheric intra-seasonal oscillation (ISO), and its relation to the persistent heavy rain-fall (PHR)events over the vicinity of the Yangtze River valley (YR) from Apr.to Aug.during 1951-2010 were analyzed statistically based on the NCEP/NCAR reanalysis data and the first–order Butterworth function, the principal oscillation pattern (POP) analysis and composite anal-ysis.The results showed that two dominant POP p…查看全部>>
吴建金
浙江大学地球科学学院，浙江杭州310027
农业科技
全球大气低频振荡30~60d持续性暴雨过程POP分析江淮流域
Global atmospheric low frequency oscillation30-60 dPersistent heavy rainfall
《安徽农业科学》 2016 (25)
146-148,3