<P> The Indian Ocean is the warmest ocean in the world . Long - term ocean temperature records show a rapid , continuous warming in the Indian Ocean , at about 0.7 -- 1.2 ° C ( 1.3 -- 2.2 ° F ) during 1901 -- 2012 . Indian Ocean warming is the largest among the tropical oceans , and about 3 times faster than the warming observed in the Pacific . Research indicates that human induced greenhouse warming , and changes in the frequency and magnitude of El Niño events are a trigger to this strong warming in the Indian Ocean . </P>
why is the indian ocean the warmest ocean in the world
human induced greenhouse warming changes in the frequency and magnitude of El Niño events