5 hours ago
https://eos.org/articles/earths-climate-...o-hothouse
INTRO: Earth systems may be on the brink of long-term, irreversible destabilization, sending our planet on a “hothouse Earth” trajectory, a scenario in which long-term temperatures remain about 5°C (9°F) higher than preindustrial temperatures, according to a new paper.
In the paper, published in One Earth, scientists argue that uncertainties in climate projections mean Earth system components could be at a higher risk than we think of reaching crucial tipping points such as the melting of the Greenland Ice Sheet and the thawing of the world’s permafrost—points of destabilization that, once breached, are irreversible.
“As we move to higher temperatures, we go into higher risk zones,” said Nico Wunderling, a coauthor of the new paper and a climate scientist at the Potsdam Institute for Climate Impact Research and Goethe University Frankfurt, both in Germany. Scientists know higher temperatures will activate interactions between tipping elements, he said.
The new paper “strongly builds” on a 2018 perspective paper linking the possibility of hothouse Earth to tipping points, said Swinda Falkena, a climate scientist at Utrecht University in the Netherlands who was not involved in either publication.,, (MORE - details)
INTRO: Earth systems may be on the brink of long-term, irreversible destabilization, sending our planet on a “hothouse Earth” trajectory, a scenario in which long-term temperatures remain about 5°C (9°F) higher than preindustrial temperatures, according to a new paper.
In the paper, published in One Earth, scientists argue that uncertainties in climate projections mean Earth system components could be at a higher risk than we think of reaching crucial tipping points such as the melting of the Greenland Ice Sheet and the thawing of the world’s permafrost—points of destabilization that, once breached, are irreversible.
“As we move to higher temperatures, we go into higher risk zones,” said Nico Wunderling, a coauthor of the new paper and a climate scientist at the Potsdam Institute for Climate Impact Research and Goethe University Frankfurt, both in Germany. Scientists know higher temperatures will activate interactions between tipping elements, he said.
The new paper “strongly builds” on a 2018 perspective paper linking the possibility of hothouse Earth to tipping points, said Swinda Falkena, a climate scientist at Utrecht University in the Netherlands who was not involved in either publication.,, (MORE - details)