Climatologists at NASA's Jet Propulsion Laboratory (JPL) believe natural processes will offset sea-level rise by 2250. Scientists currently predict that the Antarctic melting ice sheet will contribute between 20 and 25 percent of the world's sea-level rise. The terrible number is mainly due to the warming of water temperatures that affect the integrity of the Antarctic ice sheet and glaciers. Previous climate forecasts for the next 500 years have found a rapidly growing ice melt that affects the Thwaites Glacier of the Antarctic.
However, NASA's refined climate models indicate that ice melt will slow down over the next 300 years.
Predictions about future Antarctic contributions to sea-level rise could therefore decrease by as much as 29 percent.
The results of the study were presented this week in the journal Science under the title "Slowing down of Antarctic mass loss due to solid earth and sea high-level feedback. "
Eric Larour, NASA, who led the study, said," We found that around the year 2250, some of these solid earth processes began to offset the melting of the ice and the consequent rise in sea level.
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Over the next 1
Dr. Larour said: "Unlike most current models, we have included Earth's solid processes. The elastic rebound of rock beneath the ice and the effects of sea level changes very close to the ice cover.
"We also studied these models at a much higher resolution than is normally used – we've zoomed in on areas of bedrock that was about a kilometer instead of the usual 20 kilometers. "
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And Erik Ivins, who co-authored the study, said, "One of the most important things we learned was that the ground lifts elastically when the grounded ice is withdraws. 19659002] "It's similar to how a sofa cushion decompresses when you lose weight."
"The process slows the retreat of the ice cover and ultimately the amount of melting."
However, the US Space Agency scientists found that the study's results are not necessarily as good as they might sound.
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Dr Larour likened the results to a truck that drove downhill but on the Driving with speed thresholds was faced.
He said, "The truck will slow down somewhat, but will eventually drive down the hill."
NASA in this sense The expert said the Antarctic ice sheet would continue to melt and contribute to sea-level rise.
Dr. Larour added that scientists need to reach "high enough" to record these velocity variations to better understand the effects of melting ice on sea level rise around the world. "