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Understanding Sea Level

NASA keeps track of sea level change and its causes from space. Find out more about how NASA satellite observations help our understanding of this complex topic.

Global Sea Level

Regional Sea Level

Explore the main causes: ice melt and heat-driven expansion of ocean water

Understanding Sea Level

NASA keeps track of sea level change and its causes from space. Find out more about how NASA satellite observations help our understanding of this complex topic.

Global Sea Level

Explore the main causes: ice melt and heat-driven expansion of ocean water
Learn more about Global Sea Level ›

Regional Sea Level

Sea level varies by region in response to many factors, from gravity to land motion to rainfall
Learn more about Regional Sea Level ›
Sea Level News
› more sea level news
At the fringes of the Greenland Ice Sheet, where glaciers are constantly melting, water rushes everywhere through an intricate system of lakes and streams that branch out like slip and slide shoots of super chilled, bright turquoise water. Some of that water eventually cascades straight into the surrounding land and ocean through channels and cracks. Some of it thunders off into sinkhole-like structures on the ice called moulins. Rumbling 24 hours a day, these holes swallow water from the surface and funnel it to the bedrock at the base of the ice.
What a Glacial River Reveals About the Greenland Ice Sheet
Researchers with NASA’s Delta-X mission conduct preliminary field work in coastal Louisiana’s delta region.
After COVID-19 Delay, Delta-X Field Campaign Begins in Louisiana
Major Earth Satellite to Track Disasters, Effects of Climate Change
A fjord on Greenland's coast where a glacier is undercut by warming water
Warming Seas Are Accelerating Greenland's Glacier Retreat

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Rising Tides: Understanding Sea Level Rise

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Rising Tides: Understanding Sea Level Rise

Watch a video to learn how much global sea level is rising each year, what that looks like in everyday terms, and why it matters.