Global Sea Levels Rising Faster Due to Ocean Mass Increase
Global Sea Levels Rising Faster Due to Ocean Mass Increase
US · Published Feb 24, 2026
Global sea levels are rising faster due to increasing ocean mass, averaging a 3.3 mm annual increase from 1993-
Melting land ice and thermal expansion of seawater are major contributors to the increase in ocean mass.
Accelerated sea level rise threatens coastal communities and ecosystems, necessitating ongoing monitoring and climate adaptation strategies.
Global sea levels rising at accelerated rate
A recent study from The Hong Kong Polytechnic University reveals that global sea levels are rising at an accelerated rate due to the increasing mass of the world's oceans. Utilizing satellite laser ranging (SLR) data from 1993 to 2022, researchers found an average increase of 3.3 mm per year in global mean sea level (GMSL) attributed to ocean mass gain. This rise is primarily driven by the melting of land ice, such as glaciers and ice sheets, and the thermal expansion of seawater as it absorbs excess heat from the Earth's climate system. As water warms, it expands, leading to an increase in volume, and the melting ice directly adds to the ocean's mass.
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