摘要
利用Marr小波变换和交叉小波变换 ,对河南省近 5 0年气温、Nino海区SSTA、南方涛动指数SOI月平均距平序列进行了时频特征分析。结果表明 :河南气温距平 (ΔT)、海面温度距平 (ΔTss)以及南方涛动指数距平 (ΔIso)序列中都存在着不同时间尺度的周期分量 ,并且各周期分量具有不同的强度 ;
An analysis is made of the temporal frequency structure of monthly SSTA anomaly series in El Nino areas and monthly SOI anomaly series and monthly temperature anomaly series in Henan Province during the last 50 years using the Wavelet and Cross Wavelet Transform analysis techniques. The results show that there are multi scale periods in the anomaly series of SSTA and SOI as well as monthly temperature in Henan, which have various intensities, and the multi scale temperature variations in Henan Province are related to ENSO oscillation processes.
出处
《气象科技》
北大核心
2004年第3期177-181,共5页
Meteorological Science and Technology
基金
河南省科技攻关计划项目"河南短期气候预测技术和业务系统研究"( 0 12 42 10 0 0 2 )资助
