You can see the 97/98 animation form below the ocean months before it manifests in this new detailed visualisation produced by Australian researchers.
CREDIT
ARC Centre of Excellence for Climate System Science / National Computational Infrastructure.

Do over: The 1997/98 Super El Niño via latest computer animation

From the UNIVERSITY OF NEW SOUTH WALES Extraordinary animation reveals ocean’s role in El Niños Ocean model data generated by Australia’s most powerful supercomputer, Raijin, shows 97/98 El Nino unfolding Sydney, Australia: Australian researchers from the National Computational Infrastructure (NCI) and the ARC Centre of Excellence for Climate System Science have produced a remarkable high-resolution…