Tag Archives: National Oceanic and Atmospheric Administration

CFC Reduction Induces Ozone Layer Fixing

A new MIT-led study confirms that the Antarctic ozone layer is healing as a direct result of global efforts to reduce ozone-depleting substances such as chlorofluorocarbons or CFCs. This is significant because scientists have observed signs of ozone recovery in the past. However, the new study is the first to show, with high statistical confidence, that this recovery is due primarily to the reduction of ozone-depleting substances, instead of other influences such as natural weather variability or increased greenhouse gas emissions to the stratosphere.

“There’s been a lot of qualitative evidence showing that the Antarctic ozone hole is getting better. This is really the first study that has quantified confidence in the recovery of the ozone hole,” says study author Susan Solomon, the Lee and Geraldine Martin Professor of Environmental Studies and Chemistry. “The conclusion is, with 95% confidence, it is recovering. Which is awesome. And it shows we can actually solve environmental problems.” Continue reading

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NOAA – 2024 Was Earth’s Warmest Year on Record

Planet Earth’s average land and ocean surface temperature in 2024 was 2.32 degrees F (1.29 degrees C) above the 20th-century average, according to the National Oceanic and Atmospheric Administration. This was the highest global temperature among all years in NOAA’s 1850-2024 climate record. It was 0.18 of a degree F (0.10 of a degree C) warmer than 2023, which previously was the warmest year on record. Regionally, Africa, Europe, North America, Oceania and South America (tied with 2023) had their warmest year on record. Asia and the Arctic had their second-warmest year on record.

The planet’s 10 warmest years since 1850 have all occurred in the past decade. In 2024, global temperature exceeded the pre-industrial (1850–1900) average by 2.63 degrees F (1.46 degrees C). Other scientific organizations, including NASA, the Copernicus Climate Change Service and the UK Met Office have conducted separate but similar analyses that also rank 2024 as the warmest year on record. Continue reading

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