The warming of Earth is primarily due to accumulation of heat-trapping greenhouse gases, and more than 90 percent of this trapped heat is absorbed by the oceans. As this heat is absorbed, ocean temperatures rise and water expands. This thermal expansion contributes to an increase in global sea level. Temperature measurements of the sea surface, taken by ships, satellites and drifting sensors, along with subsurface measurements and observations of global sea-level rise, have shown that the warming of the upper ocean caused sea level to rise due to thermal expansion in the 20th century. Using measurements from Argo profiling floats, we know this warming has continued, causing roughly one-third of the global sea-level rise observed by satellite altimeters since 2004.
Among the several being recognized by the American Geophysical Union are three from JPL, one of whom is also on the NASA Sea Level Change Team.
Topics of discussion include upcoming NASA Earth science launches, the scientific discoveries Perseverance’s investigations on Mars, and updates from the Juno mission.
The Surface Water and Ocean Topography spacecraft enters the home stretch as an international team prepares this next-generation satellite for launch in 2022.
With a click, NASA's new SEA tool provides a snapshot of sea-level change for locations around the planet.
As satellites collect larger and larger amounts of data, engineers and researchers are implementing solutions to manage these huge increases.