Global sea level rise is accelerating incrementally over time rather than increasing at a steady rate, as previously thought, according to a new study based on 25 years of NASA and European satellite data.
A NASA study based on an innovative technique for crunching torrents of satellite data provides the clearest picture yet of changes in Antarctic ice flow into the ocean.
The findings confirm accelerating ice losses from the West Antarctic Ice Sheet and reveal surprisingly steady rates of flow from its much larger neighbor to the east.
The computer-vision technique crunched data from hundreds of thousands of NASA-U.S. Geological Survey Landsat satellite images to produce a high-precision picture of changes in ice-sheet motion.
The new work provides a baseline for future measurement of Antarctic ice changes and can be used to validate numerical ice sheet models that are necessary to make projections of sea level. It also opens the door to faster processing of massive amounts of data.
American Geophysical Union (AGU) | Published on Dec 13, 2017
In 2018, NASA will launch the next generation of two satellite missions that will track changes in Earth’s ice with incredible precision, giving scientists more detailed information to measure ice melt, and forecast future changes and impacts such as sea level rise.
In this workshop, scientists will preview the Gravity Recovery and Climate Experiment (GRACE) follow-on and ICESat-2 missions and their diverse science objectives, which also include studying changes to liquid water, the solid Earth and vegetation.
Thorsten Markus, NASA Goddard Space Flight Center, Greenbelt, Maryland, U.S.A.;
Felix Landerer, NASA Jet Propulsion Laboratory, Pasadena, California, U.S.A.;
Helen Fricker, Scripps Institution of Oceanography, La Jolla, California, U.S.A.;
Don Chambers, University of South Florida, St. Petersburg, Florida, U.S.A.
But in the coming decades, the city could see this kind of flooding on a routine basis. According to a new study out recently, sea-level rise could lead to Sandy-like flood events every five years starting around mid-century.
Two thirds of property buyers in Miami don’t even ask their brokers about “the potential impact of global climate change and sea level rise on the local market,” a new survey finds.
Meanwhile, we appear headed toward the worst-case scenario of sea level rise, and President Donald Trump is doing all he can to pop the trillion-dollar coastal property bubble, abandoning the Paris climate deal and trying to gut both domestic climate action and coastal adaptation programs.