Spatial and Temporal Variability of Sea Surface Temperature in Eastern Marginal Seas of China

Figure 4

(a) Green curve represents the EMSC SST interannual index constructed by spatial mean SSTA (red curve line) subtracting the warming and cooling trend (blue straight line) and then filtering out signals with period <1 year and >8 years. (b) Continuous wavelet power spectrum for EMSC SST interannual index. Shading corresponds to log2(power). The red contour designates the 5% significance level against red noise and the black line indicates the cone of influence (for detailed technique see Torrence and Compo, 1998 [23]; MATLAB code can be obtained from http://paos.colorado.edu/research/wavelets/). (c) Global wavelet spectrum for EMSC SST interannual index.

(a) EMSC SSTA index

(b) Wavelet power spectrum

(c) Global wavelet spectrum