Figure 2

Cross-wavelet coherence of the malaria time series with the DMI (dipole mode index) and with Nino3 (ENSO index).

(A) Maseno and DMI (March, 1958, December 2008), (B) Maseno and Nino3 (March 1958, December 2008); (C) Kendu Bay and DMI; (D) Kendu Bay and Nino3; (E) Kisii and DMI; (F) Kisii and Nino3; (G) Kapsabet and DMI; (H) Kapsabet and Nino3; (I) Kericho and DMI; (J) Kericho and Nino3. The coherency scale is from zero (blue) to one (red). Red regions in the plots indicate frequencies and times for which the two series share variability. The cone of influence (within which results are not influenced by the edges of the data) and the significant coherent time-frequency regions (p < 0.05) are indicated by solid lines. The procedures and software used are those described in Chaves and Pascual (2006)³⁰. A smoothing window of 6 months was used to compute the cross-wavelet coherence.