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"description": "Ozone is Earth’s natural sunscreen, shielding life from dangerous solar ultraviolet radiation. Human-produced chemicals in our atmosphere—such as chlorofluorocarbons (CFCs), used for many years as refrigerants and in aerosol spray cans—have depleted the Earth’s ozone layer. Scientists first recognized the potential for harmful effects of CFCs on ozone in the early 1970s. In the 1980s, governments around the world woke up to the destruction of the ozone layer and in 1987 negotiated the Montreal Protocol—an international treaty designed to protect the ozone layer by banning CFCs and similar ozone-depleting chemicals.
Since the mid-1990s, global ozone levels have become relatively stable. In fact, because of the Montreal Protocol, model simulations suggest the size of the hole should return to its pre-1980 levels by about 2075. Here, the globes show ozone data on the day that the maximum extent of the ozone hole over Antarctica was reached, each year from 1979 and 2024.
Data are from ozonewatch.gsfc.nasa.gov",
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"description": "Here, the globes show ozone data on the day that the minimum ozone concentration was reached over Antarctica, each year from 1979 and 2024, without the colorbar.",
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"description": "False-color color table for total ozone over the Antarctic pole. The purple and blue colors are where there is the least ozone, and the yellows and reds are where there is more ozone.",
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"description": "See [https://ozonewatch.gsfc.nasa.gov/statistics/annual_data.html](https://ozonewatch.gsfc.nasa.gov/statistics/annual_data.html)",
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"title": "2024 Ozone Hole Update",
"description": "This year, the ozone hole over Antarctica reached its annual maximum extent on September 28th, 2024, with an area of 8.5 million square miles (22.4 square million kilometers.) The hole, which is actually a region of depleted ozone, was the 20th smallest since scientists began recording the ozone hole in 1979. The average size of the ozone hole between September 7 and October 13 this year was the 7th-smallest since the Montreal Protocol began to take effect. || ",
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"update_date": "2024-10-30T14:33:05.554924-04:00",
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"alt_text": "Complete transcript available.Universal Production Music \"What Was Reported As Is Instrumental\" ",
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{
"id": 31253,
"url": "https://svs.gsfc.nasa.gov/31253/",
"page_type": "Hyperwall Visual",
"title": "Ozone Minimum Concentrations, 1979-2023",
"description": "Here, the globes show ozone data on the day that the minimum ozone concentration was reached over Antarctica, each year from 1979 and 2023. || annual_ozone_min_v2_4k.00001_print.jpg (1024x574) [109.7 KB] || annual_ozone_min_v2_4k.00001_searchweb.png (320x180) [52.9 KB] || annual_ozone_min_v2_4k.00001_thm.png (80x40) [5.0 KB] || annual_ozone_min_v2_1080p30_2.mp4 (1920x1080) [7.5 MB] || annual_ozone_min_v2_1080p30_2.webm (1920x1080) [5.2 MB] || annual_ozone_min_v2 (4104x2304) [128.0 KB] || annual_ozone_min_v2_2160p30.mp4 (3840x2160) [18.2 MB] || ",
"release_date": "2023-10-18T00:00:00-04:00",
"update_date": "2024-11-24T23:50:59.843538-05:00",
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