Even if the planet warms more than 2 degrees Celsius, the ice sheet can be protected if temperatures cool back down quickly enough.
Rivers of meltwater carve into the Greenland ice sheet. Melting at the ice sheet's surface can spur more melt, creating a dangerous feedback loop.Rivers of meltwater carve into the Greenland ice sheet. Melting at the ice sheet's surface can spur more melt, creating a dangerous feedback loop.. Today, it is up to 2 miles thick and so packed with ice global sea levels would rise 20 feet if it all melted.
But, he stresses, that resiliency has clear bounds. The possibility of irreversible ice sheet collapse within a few thousand years is nearly impossible to avoid if temperatures dramatically overshoot the 2C threshold after 2100, or if they stay even slightly past that threshold for more than a few hundred years. But a window to repair the damage exists."If we reduce temperatures within a certain time, we can prevent this abrupt loss," Bochow says.
The science team used two different models of the ice sheet and ran different time and temperature scenarios to see how the ice would react. They warmed up the atmosphere until 2100 by a little, some, and a lot–6.5C or about 12F–above pre-industrial temperatures. When temperatures came back down to about 1.5C above pre-industrial levels within a few centuries or even faster, the ice sheet stayed away from the dangerous positive feedback thresholds.
Indonesia Berita Terbaru, Indonesia Berita utama
Similar News:Anda juga dapat membaca berita serupa dengan ini yang kami kumpulkan dari sumber berita lain.
Ice sheet surface melt is accelerating in Greenland and slowing in AntarcticaSurface ice in Greenland has been melting at an increasing rate in recent decades, while the trend in Antarctica has moved in the opposite direction, according to researchers.
Baca lebih lajut »
Climate research: How the Greenland ice sheet can still be savedGreenland is the second largest permanently ice-covered surface on the Earth; only Antarctica is larger. The Greenland ice sheet is drastically impacted by the effects of climate change.
Baca lebih lajut »
Rising seas will tighten vise on Miami even for people who are not flooded, says studyA new study that examines both the physical and socioeconomic effects of sea-level rise on Florida's Miami-Dade County area finds that in coming decades, four out of five residents may face disruption or displacement, whether they live in flood zones or not.
Baca lebih lajut »
Biden’s Middle East mission was thrown into turmoil even before he leftPresident Joe Biden’s mission to contain Israel’s confrontation with Hamas was overtaken even before he left Washington on Tuesday evening by fast worsening events that threaten to spill over into a regional war.
Baca lebih lajut »
CNBC Daily Open: Bonds are driving stocks even amid big bank earningsMarkets wavered Tuesday as investors digested September’s U.S. retail sales report and third-quarter earnings from banks.
Baca lebih lajut »
CNBC Daily Open: Bonds are driving stocks even amid big bank earningsMarkets wavered Tuesday as investors digested September’s U.S. retail sales report and third-quarter earnings from banks.
Baca lebih lajut »