Frequency-specified EOF analysis and its application to Pacific decadal oscillation
Frequency-specified EOF analysis and its application to Pacific decadal oscillation
复制标题
频率指定的 EOF 分析及其在太平洋年代际振荡中的应用
DOI:
10.1007/s11430-016-0141-x
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发表时间:
2017-02
期刊:
影响因子:
--
通讯作者:
Tang YouMin
中科院分区:
文献类型:
--
作者:
Lian Tao;Tang YouMin
A frequency-specified empirical orthogonal function (FSEOF) analysis is proposed in this study. The aim of FSEOF is to specify a prescribed-band of frequency in leading principal components with less information losing at the ends of the data, thus well characterizing the signals of interest. The FSEOF can well capture prescribed variability in leading modes, and has intrinsic merits in resolving frequency-related modes, especially those associated with low frequency oscillations. An application of the FSEOF to the tropical and northern Pacific sea surface temperature shows that this new method can successfully separate Pacific decadal oscillation (PDO) mode from the El Niño-Southern oscillation mode, and clearly detect all regime shifts of PDO in the past century.
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