Recent research by Nasa:

NASA Analysis Shows Irreversible Sea Level Rise for Pacific Islands

In the next 30 years, Pacific Island nations such as Tuvalu, Kiribati, and Fiji will experience at least 6 inches (15 centimeters) of sea level rise, according to an analysis by NASA’s sea level change science team. This amount of rise will occur regardless of whether greenhouse gas emissions change in the coming years.

“Sea level will continue to rise for centuries, causing more frequent flooding,” said Nadya Vinogradova Shiffer, who directs ocean physics programs for NASA’s Earth Science Division."