Figure 3
From: Indian Ocean Dipole in CMIP5 and CMIP6: characteristics, biases, and links to ENSO
Power spectrum of (a) DMI, and (b) Niño3.4 index, calculated by Welch's method. Power spectrum of each model is standardised to facilitate inter-model comparison of the ENSO and IOD period. Observations are shown in bold, CMIP5 models in blue text, and CMIP6 models in orange text.
