Global Sea Levels Rose Faster Than Expected in 2024, NASA Reports

A NASA-led analysis attributes the accelerated rise to record-breaking ocean warming and melting glaciers during Earth's hottest year on record.

Global sea levels increased by 0.23 inches (0.59 cm) in 2024, surpassing the predicted rise of 0.17 inches (0.43 cm).
Thermal expansion, caused by warming ocean waters, accounted for two-thirds of the rise, reversing the previous trend dominated by melting ice sheets and glaciers.
2024 was confirmed as the warmest year on record, with Earth's oceans reaching their highest levels in three decades.
Since 1993, the rate of sea level rise has more than doubled, with a total increase of 4 inches (10 cm) recorded over the past three decades.
Rising sea levels threaten coastal populations and ecosystems, with increased risks of storm surges, flooding, and infrastructure damage.