Rising seas, melting ice caps and other effects of a warming climate may be irreversible for centuries and are “Unequivocally” driven by greenhouse-gas emissions from human activity, a scientific panel working under the auspices of the United Nations said Monday in a new report.
“We’ve known for decades that the world is warming, but this report tells us that recent changes in the climate are widespread, rapid and intensifying, unprecedented in thousands of years,” said Ko Barrett, vice chair of the panel and the senior adviser for climate at the Office of Oceanic and Atmospheric Research at the National Oceanic and Atmospheric Administration.
Dan Lunt, a climate scientist at the U.K.’s University of Bristol and one of 234 co-authors of the report, said, “It is now completely apparent that climate is changing everywhere on the planet.”
The report “Connects the dots in a way we really haven’t seen before,” said climate scientist Michael Mann, director of the Earth System Science Center at Pennsylvania State University, who wasn’t involved with the report.
The report reflects new scientific methodologies honed in an era of growing climate disturbances.
It draws on a better understanding of the complex dynamics of the changing atmosphere and greater stores of data about climate change dating back millions of years, as well as a more robust set of satellite measurements and more than 50 computer models of climate change.
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