slide 1 - International Sea Level Satellite Spots Early Signs of El Niño

International Sea Level Satellite Spots Early Signs of El Niño

Kelvin waves, a potential precursor of El Niño conditions in the ocean, are rolling across the equatorial Pacific toward the coast of South America. Full story ›

slide 2 - Melting Ocean Ice Affects Sea Level – Unlike Ice Cubes in a Glass

Melting Ocean Ice Affects Sea Level – Unlike Ice Cubes in a Glass

Floating sea ice seems to have a small effect on sea level. Full story ›

slide 3 - A lone telephone pole under a sunny sky with patchy clouds rises from the side of a roadway covered by low-level flooding on the Virginia coast.

NASA Project Shows Hidden Factors Shape Minor Coastal Floods

Sea level science team reveals complex, interlocking causes behind "nuisance" flooding events. Full story ›

slide 4 - Artist's rendering shows fully deployed SWOT satellite in orbit.

Joint NASA, CNES Water-Tracking Satellite Reveals First Stunning Views

The first views from SWOT show the ocean, lakes and rivers in unprecedented detail. Full story ›

slide 5 - Satellite image of New Orleans coastal area, with brightly reflecting river winding toward delta waters and the ocean on the right side of the image. Land area in dark blue dominates left side of image.

NASA Uses 30-Year Satellite Record to Track and Project Rising Seas

Three decades of climate satellite observations helps researchers understand the drivers of sea level rise. Full story ›

Global Mean Sea Level

98.5

mm since 1993
Ocean Mass

2

± 0.3
mm/yr
Steric Height

1.3

± 0.2
mm/yr
Greenland Ice Mass Change

272

± 21
Gt/yr
Antarctica Ice Mass Change

148

± 39
Gt/yr

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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

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

Learn more about Global Sea Level ›

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A horizontal animated gif of sea level data at the equator from March 6, 2023 to April 17, 2023

International Sea Level Satellite Spots Early Signs of El Niño

A lone telephone pole under a sunny sky with patchy clouds rises from the side of a roadway covered by low-level flooding on the Virginia coast.

NASA Project Shows Hidden Factors Shape Minor Coastal Floods

Joint NASA, CNES Water-Tracking Satellite Reveals First Stunning Views

Satellite image of New Orleans coastal area, with brightly reflecting river winding toward delta waters and the ocean on the right side of the image. Land area in dark blue dominates left side of image.

NASA Uses 30-Year Satellite Record to Track and Project Rising Seas

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Tracking 30 Years of Sea Level Rise

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Tracking 30 Years of Sea Level Rise

An animation shows global sea level trends from 1993 to 2022 as observed by several satellite missions.