kind of like warming
I suppose the money line is the first sentence
I suppose the money line is the first sentence
Better technology yields better data. The bad news is the extra water from 2003-2010 would fill Lake Erie eight times
By Jason Koebler
February 8, 2012 RSS Feed Print
Nearly 230 billion tons of ice is melting into the ocean from glaciers, ice caps, and mountaintops annually—which is actually less than previous estimates, according to new research by scientists at the University of Colorado, Boulder.
...
The team used data from the Gravity Recovery and Climate Experiment satellite, which was launched as a joint project between NASA and Germany in 2002. The GRACE satellite measures gravity, which is related to mass, in 20 distinct regions worldwide. Wahr says that gives the team more accurate estimates, because previous teams had to measure ice loss at "a few easily accessible glaciers" and then extrapolate it to the 200,000 glaciers worldwide.
"It's tough to get an estimate [with previous methods]," he says.
With GRACE, the team can measure wide swaths of the earth, giving them a more complete picture. "It was time to do a complete global inventory," he says. Although the team used eight years of GRACE's data, Wahr says it's important to realize that melting patterns are hard to predict.
"Even with an eight-year estimate, it's not clear how far into the future you can project," he says. "A lot of people want to predict into the end of the century, but I think it's too dangerous to do that … We don't have enough info to know what'll happen. There's some ebb and flow to these things."