NASA Dataset: Rate Of Global Warming In Past 30 Years Fastest Since 1880; 2015-25 Warmest 11 Years On Record
According to a Washington Post analysis, the fastest warming rate on record occurred in the last 30 years. The Post used a dataset from NASA to analyze global average surface temperatures from 1880 to 2025. “We’re not continuing on the same path we had before,” said Robert Rohde, chief scientist at Berkeley Earth. “Something has changed.”
For about 40 years — from 1970 to 2010 — global warming proceeded at a fairly steady rate. As humans continued to pump massive amounts of greenhouse gases into the atmosphere, the world warmed at about 0.19 degrees Celsius per decade, or around 0.34 degrees Fahrenheit. Then, that rate began to shift. The warming rate ticked up a notch. Temperatures over the past decade have increased by close to 0.27 degrees C per decade — about a 42 percent increase.
Those data — combined with the last few years of record heat — have convinced many researchers that the world is seeing a decisive shift in how temperatures are rising. The last 11 years have been the warmest years on record; according to an analysis by Berkeley Earth, if we assume a constant rate of warming since the 1970s, the last three years have a less than 1-in-100 chance of occurring solely due to natural variability.
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That explains part of why warming has kicked up a bit. But some researchers say that the last few years of record heat can’t be explained by aerosols and natural variability alone. In a paper published in the journal Science in late 2024, researchers argued that about 0.2 degrees C of 2023’s record heat — or about 13 percent — couldn’t be explained by aerosols and other factors. Instead, they found that the planet’s low-lying cloud cover had decreased — and because low-lying clouds tend to reflect the sun’s rays, that decrease warmed the planet.
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https://www.washingtonpost.com/climate-environment/interactive/2026/climate-change-temperature-rate-accelerating/
https://wapo.st/4abXa5w
