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Interannual variability of thermal front west of Luzon Island during the winter of 1993–2013 is examined with the method of singular value decomposition(SVD) and a suite of satellite measurements in this paper. It is found that both the area and intensity of the thermal front west of Luzon Island show apparent interannual variability.Further study based on SVD shows that the interannual variability of the thermal front is highly associated with El Ni?o and Southern Oscillation(ENSO), and the correlation coefficient between Ni?o3.4 index and the first Principal Component(PC1) of thermal front can reach –0.65. The mechanism can be described as follows. In El Ni?o(La Ni?a) years, the East Asian winter monsoon(EAWM) is weakened(enhanced), inducing weaker(stronger) local wind stress curl(WSC) west of Luzon Island, and resulting in weakened(enhanced) Luzon cold eddy, which finally leads to the weakening(enhancement) of the thermal front.
Interannual variability of thermal front west of Luzon Island during the winter of 1993-2013 is examined with the method of singular value decomposition (SVD) and a suite of satellite measurements in this paper. It is found that both both area and intensity of the thermal Front west of Luzon Island show apparent interannual variability. Future study based on SVD shows that the interannual variability of the thermal front is highly associated with El Niño and Southern Oscillation (ENSO), and the correlation coefficient between Ni? o3.4 index (La Niña) years, the East Asian winter monsoon (EAWM) is weakened (enhanced), and the first Principal Component (PC1) of the thermal front can reach -0.65. , inducing weaker (stronger) local wind stress curl (WSC) west of Luzon Island, and resulting in weakened (enhanced) Luzon cold eddy, which finally leads to the weakening (enhancement) of the thermal front.