Scientists Explain 3.94 mm-a-Year Sea Rise, Resolving 60-Year Measurement Gap
Updated
Updated · ScienceDaily · May 27
Scientists Explain 3.94 mm-a-Year Sea Rise, Resolving 60-Year Measurement Gap
3 articles · Updated · ScienceDaily · May 27
3.94 millimeters a year—global sea level rise nearly doubled in 2005-2023 from the 2.06 mm annual average since 1960, according to a Science Advances study led by China’s Institute of Atmospheric Physics.
43% of the rise came from warming seawater, while glaciers contributed 27%, Greenland 15%, Antarctica 12%, and land water storage changes 3%, with ice loss becoming a bigger accelerator since 1993.
Updated post-2015 satellite corrections, better accounting for land movement at tide gauges, and improved ice-loss estimates closed the long-running gap between observed sea rise and calculated causes.
Researchers said the findings strengthen confidence in sea-level measurements and underscore that rising seas will continue for centuries because oceans warm slowly and large ice sheets keep melting long after temperatures rise.
Sea level rise is now locked in for centuries. How will humanity's relationship with the world's coastlines fundamentally change?
If 99% of coastal risk studies are flawed, are millions more people living in future flood zones than we know?
Your city could be sinking faster than the sea is rising. Do you know your true local flood risk?
Global Sea Level Rise Has Doubled: Scientific Breakthroughs, Drivers, and Urgent Policy for a Changing Coastline
Overview
A major international study published in 2026 confirmed that global sea level rise is accelerating at an alarming rate, with the pace now more than double the historical average. The research showed that from 2006 to 2015, the global mean sea level rose by 0.14 inches per year, which is 2.5 times faster than the rate seen throughout most of the twentieth century. This breakthrough significantly improved scientific understanding of sea level trends and solidified confidence in the observed acceleration since 1960, highlighting the urgent need for action as the rate of sea level rise continues to increase.