Relationship between ENSO Indices and Temperature and Rainfall

The analysis has shown the impacts of ENSO on rainfall and temperature in the MRD. These effects are different depending on calendar months. The highest correlation coefficients are in the range of 0.5-0.7 between ENSO indices and temperature during March through to June. For rainfall, the correlation coefficients are lower than those of temperature. The highest correlation coefficients are in the range of 0.4-0.6 between ENSO indices and rainfall during March through May (Fig. 18.2). The lag time of 2-3 months for temperature and of 4-5 months for rainfall gives the highest correlation coefficients.

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