南亚夏季风影响西太平洋副高南北进退活动的小波包能量诊断
A WAVELET PACKET ENERGY DIAGNOSIS OF SOUTH ASIAN SUMMER MONSOON INFLUENCING ON THE WEST PACIFIC SUBTROPIC HIGH
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摘要: 基于小波包分解重构方法,利用NCEP/NCAR逐日再分析资料,讨论了南亚夏季风与季内西太平洋副高活动的关系,提出和定义了用以诊断副高活动的夏季风频域能量判据。诊断结果除佐证了副高已有的一些研究结果和变化规律外,还揭示出副高与季风间一些新的关系特征。Abstract: Based on the wavelet packet decomposition/reconstruction method and the NCEP/NCAR daily reanalysis data set, the relation between the south Asian summer monsoon and the west Pacific subtropical high seasonal variation was discussed, and a corresponding summer monsoon frequency-band energy criterion was defined and introduced for diagnosing the west Pacific subtropical high. Besides, some existing characteristics and rules about the west Pacific subtropic high were further argued and proofed, a few new phenomena and correlation between the south Asian summer monsoon and the west Pacific stubtropical high were also revealed and presented.
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