Rate Of Global Sea Level Rise Doubled In 30 Years - Indian Institute Of Oceanography

The rise of sea level in the world is around three millimetres per year, which is double the rate three decades ago, a senior scientist said here today.

"The rise in sea level was 1.8 millimetre three decades ago, but it has now increased to three millimetres per year, due to various factors," National Institute of Oceanography (NIO) researcher A S Unnikrishnan said at an event organised to celebrate World Environment Day here.

He said that studies are still on to ascertain the reason behind the rise in sea level, whether it is natural variability or it is due to global warming.

"In the 1970s, thermal expansion and glacier melting accounted for 75 per cent of ocean rise," he said, adding that other factors contributed to the remaining 25 per cent. Unnikrishnan said that since 1992, satellite altimeters have been used to measure changes in sea level. "Since the last couple of years, Indo-French satellite SARAL-Altika has been measuring changes in glaciers which contributes to rise in sea level," the researcher who is part of a team monitoring shore water rise, said.

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https://www.authintmail.com/article/science-environment/rise-sea-level-doubled-rate-three-decades-researchers