NASA: Global sea levels rose 'unexpectedly' in 2024

2025-03-15 22:04:21 / MISTERE&KURIOZITETE ALFA PRESS
NASA: Global sea levels rose 'unexpectedly' in 2024

Global sea levels have risen by 0.23 inches (0.59 centimeters) in 2024, exceeding the 0.17 inch expected.

An analysis led by the US Space Agency (NASA) found that thermal expansion, the process of ocean water expanding as it warms, played a major role in the "sudden" rise.

"With 2024 the warmest year on record, Earth's expanding oceans are following suit, reaching their highest levels in three decades," said Nadya Vinogradova Shiffer, director of physical oceanography programs at NASA.

In January, NASA confirmed that the average surface temperature of the Earth in 2024 was the warmest on record, with global temperatures last year at 1.28 degrees Celsius above the agency's 20th century baseline.

In previous years, two-thirds of sea level rise came from melting glaciers and ice sheets, while one-third came from thermal expansion. However, by 2024, these proportions would reverse, with two-thirds of the rise attributable to thermal expansion, according to the analysis.

Josh Willis, a sea level researcher at NASA's Jet Propulsion Laboratory, highlighted the accelerating trend.

"The growth we saw in 2024 was higher than we expected. The ocean continues to grow and the pace is getting faster and faster," he said.

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