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This research aims to clarify the decadal variations in the relationship between ENSO and the East Asian winter monsoon.

March 8, 2026AtmosphereOpen Access

Resolve the Decadal Variation in the Relationship Between ENSO and East Asian Winter Monsoon

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Analysis reveals ENSO's covariance drives decadal changes in the East Asian winter monsoon, suggesting distinct regional modulations by AMO and PDO.

This research aims to clarify the decadal variations in the relationship between ENSO and the East Asian winter monsoon.
Utilized reanalysis data from 1951 to 2020
Applied running-correlation decomposition for analysis
Employed multiple regression to assess contributions of AMO and PDO
Decadal variations in ENSO–EAWM relationship driven by changes in covariance
AMO affects EAWM primarily over central and South China
PDO influences the EAWM strongly over South China

Li et al. (2026) studied this question.

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Analysis reveals ENSO's covariance drives decadal changes in the East Asian winter monsoon, suggesting distinct regional modulations by AMO and PDO.