NASA reported faster-than-expected sea level rise in 2024
In a press release, NASA announced that global sea levels rose more rapidly than expected in 2024, primarily due to ocean warming. The increase reached 0.59 cm (0.23 inches), surpassing the projected 0.43 cm (0.17 inches). This was largely driven by thermal expansion, a process in which seawater expands as it warms, causing sea levels to rise.
Historically, most sea-level rise has been driven by melting ice sheets and glaciers, with thermal expansion playing a smaller role. In 2024, however, this trend has reversed, with two-thirds of the rise coming from ocean warming rather than ice melt.
Satellite data since 1993 show that sea levels have risen by 10 cm, with the rate of rise more than doubling over the past three decades. Factors such as El Niño and strong ocean currents have also contributed to deeper heat penetration, accelerating the rise.
NASA's Sentinel-6 satellites will continue to monitor sea levels with high precision. Scientists warn that as the rate of rise continues to accelerate, coastal communities face growing risks, underscoring the need for climate action and adaptation.
© AFP PHOTO/ROBERTO SCHMIDT
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