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Correlation analysis between climate indices and Korean precipitation and temperature using empirical mode decomposition : II. Correlation analysis
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 Title & Authors
Correlation analysis between climate indices and Korean precipitation and temperature using empirical mode decomposition : II. Correlation analysis
Ahn, Si-Kweon; Choi, Wonyoung; Shin, Hongjoon; Heo, Jun-Haeng;
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In this study, it is analyzed how large scale climate variation has an effect on climate systems over Korea using correlation analysis between climate indices and Intrinsic Mode Functions (IMFs) of precipitation and temperature. For this purpose, the estimated IMFs of precipitation and temperature from the accompanying paper were used. Furthermore, cross correlation coefficients and lag time between climate indices and IMFs were calculated considering periodicities and tendencies. As results, more accurate correlation coefficients were obtained compared with those between climate indices and raw precipitation and temperature data. We found that the Korean climate is closely related with climate variations of in terms of periodicity and its tendency is followed with increasing sea surface temperature due to climate change.
empirical mode decomposition;intrinsic mode function;climate indice;climate change;cross-correlation;
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