London, April 17 || The number of days each year that the world's oceans experience extreme surface heat has tripled over the past 80 years due to global warming, a new study has found.
Researchers found that, on average, the global sea surface saw about 15 days of extreme heat annually in the 1940s, news agency reported.
Today that figure has soared to nearly 50 days per year, revealed the study published in the journal Proceedings of the National Academy of Sciences.
Global warming is responsible for almost half of the occurrence of marine heatwaves -- periods when sea surface temperatures rise well above normal for an extended time.
The study, produced by a team of scientists from the Mediterranean Institute for Advanced Studies, the University of Reading, the International Space Science Institute, and the University of the Balearic Islands, also found that rising global temperatures are making extreme ocean heat events last longer and become more intense.