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American Focus > Blog > Tech and Science > NASA Reveals ‘Higher Than Expected’ Sea Level Rise in 2024 : ScienceAlert
Tech and Science

NASA Reveals ‘Higher Than Expected’ Sea Level Rise in 2024 : ScienceAlert

Last updated: May 5, 2025 8:25 pm
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NASA Reveals ‘Higher Than Expected’ Sea Level Rise in 2024 : ScienceAlert
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Sea Level Rise in 2024: A Surprising Cause

In recent years, the issue of sea level rise has become more pressing than ever. With Earth’s glaciers melting due to global warming, the rise in sea levels has reached unprecedented heights. However, in 2024, a different mechanism caused a significant portion of this increase in water volume.

According to NASA oceanographer Josh Willis, the sea level rise observed in 2024 was higher than expected. NASA had initially predicted a rise of 0.43 cm (0.17 in), but the actual increase soared to 0.59 cm (0.23 in). This unexpected surge in sea level rise has raised concerns among scientists and researchers.

The measurements taken by five international satellites since 1992 have provided valuable data on sea level rise. The latest addition to this monitoring system, Sentinel-6 Michael Freilich, is capable of measuring sea surface height with great precision. This technology has enabled scientists to track and analyze the changes in sea levels more effectively.

One of the key findings from NASA’s analysis is that in 2024, two-thirds of the sea level rise was caused by thermal expansion of liquid seawater. This phenomenon, where warmer water takes up more space than cold water, has been exacerbated by Earth’s record atmospheric heat. The oceans were the warmest they have been in three decades, leading to a significant increase in sea levels.

Moreover, the changes in wind patterns driven by increased heat energy in the atmosphere have played a crucial role in accelerating ocean temperatures. The faster winds are mixing the different layers of water in the oceans more thoroughly, resulting in a faster increase in temperature. This, in turn, contributes to the rise in sea levels at a faster pace.

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The impact of these changes in ocean temperatures is not limited to sea level rise. Marine heatwaves have been occurring at an alarming rate, killing billions of sea creatures and devastating fisheries. These events have far-reaching consequences for marine ecosystems and the communities that depend on them.

In addition to the direct impact on marine life, the rise in sea levels is also causing increased flooding and salinization of major rivers. This poses a threat to freshwater resources, with potential implications for human populations that rely on these sources of water. Without intervention, entire populations may be forced to migrate in search of freshwater.

To mitigate these impacts, it is crucial to reduce greenhouse gas emissions. Every effort to lower future warming will have a significant impact on saving lives and protecting our planet. By understanding the mechanisms driving sea level rise and taking proactive measures to address them, we can work towards a more sustainable future for all.

TAGGED:expectedhigherLevelNasaRevealsriseScienceAlertSea
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