The planet had one of its hottest years on record in 2022, as ocean heat soared and sea ice coverage in Antarctica melted to near-record lows, according to NASA and NOAA.
“The difference between fifth and sixth in our ranking is on the order of a hundredth of a degree Celsius. That’s not a robust change,” Gavin Schmidt, director of the NASA Goddard Institute for Space Studies, said Thursday in a news briefing. “We try not to make too much of the specific rankings. The key thing is the long-term trends, and they’re very consistent from one record [to the next].
Both reports found that the last nine years have been the warmest years since record-keeping began in 1880. Scientists agree that the world has already warmed about 1.1 degrees Celsius since the late 1800s. The landmark 2015 Paris Agreement set out to limit warming by 1.5 degrees Celsius in order to avert the most catastrophic consequences of climate change.“We’re getting kind of close to that,” Russell Vose, chief of climate monitoring at NOAA's National Centers for Environmental Information, said of the 1.5-degree threshold.
It's possible that in a given year this decade average global temperatures could leap over the 1.5-degree mark, but the more worrisome trend comes when that level of warming persists over decades.from the United Nations’ Intergovernmental Panel on Climate Change estimated that global warming could surpass 1.5 degrees Celsius by around 2040.
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