Abstract
In a study of surface monsoon winds over the China marginal seas, Sun et al. (2012) use singular value decomposition method to identify regional dominant modes and analyze their interdecadal variability. This paper continues to evaluate the interannual variability of each dominant mode and its relation to various atmospheric, oceanic and land factors. The findings include: 1) The intensity of the winter monsoon over the East China Sea is highly correlated with the Siberian High intensity and anti-correlated with the latitudinal position of the Aleutian Low as well as the rainfall in eastern China, Korean Peninsula and Japan; 2) The western Pacific subtropical high is significantly correlated with the summer monsoon intensity over the East China Sea and anti-correlated with the summer monsoon over the South China Sea; 3) The winter monsoon in a broad zonal belt through the Luzon Strait is dominated by the ENSO signal, strengthening in the La Niña phase and weakening in the El Niño phase. This inverse relation exhibits interdecadal shift with a period of weak correlation in the 1980s; 4) Analysis of tidal records validates the interdecadal weakening of the East Asian summer monsoon and reveals an atmospheric bridge that conveys the ENSO signal into the South China Sea via the winter monsoon.
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Supported by the National Basic Research Program of China (973 Program) (No. 2012CB417400) and the Knowledge Innovation Program of Chinese Academy of Sciences (No. KZCX2-YW-Q11-02)
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Sun, C., Yan, X. Interannual variations of surface winds over China marginal seas. Chin. J. Ocean. Limnol. 30, 922–932 (2012). https://doi.org/10.1007/s00343-012-2157-9
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DOI: https://doi.org/10.1007/s00343-012-2157-9