The hole in the ozone layer is slowly shrinking
In the final quarter of 2022, scientists from NASA and the US National Oceanic and Atmospheric Administration reported that the hole in the ozone layer is continuing to shrink. The hole lies above Antarctica, and between 7 September and 13 October 2022, it spanned an average area of 23.2 million square kilometres.
It's been 32 years since the world pledged to fix the ozone layer ...
2017年9月15日 · In 1987, countries came together – eventually 197 in total – and agreed to stop using CFCs and similar ozone-depleting chemicals by signing the Montreal Protocol on Substances that Deplete the Ozone Layer. The protocol was agreed on 16 September 1987 and entered into force on 1 January 1989. Progress so far.
Scientists have confirmed that the ozone layer is healing
2021年8月23日 · The Montreal Protocol has itself been a phenomenally successful climate treaty. In the mid-1970s, scientists realised that the ozone layer was being depleted by the growing use of chlorofluorocarbons (CFCs). Since then, countries all over the world began to limit their use, helping the ozone level to recover. A new study has found that with the ...
Annual hole in ozone layer a threat to Antarctic sea ice, and other ...
2023年8月14日 · This weekly round-up contains key nature and climate news from the past week. Top nature and climate stories: Annual hole in ozone layer a threat to Antarctic sea ice; Earth's soil home to more than half of living species; 390-million-year-old Takakia moss could disappear due to climate crisis. 1.
How the ozone hole affects weather patterns | World Economic …
2009年12月31日 · By changing atmospheric circulation, the ozone hole modifies wind, rain and snowfall patterns across the Southern Hemisphere. The changing pattern and strength of winds has caused shifts in the regions that get plenty of rain or snowfall, and those that stay dry. For example, the tip of South America is getting dryer but further north there is ...
What is surface ozone pollution and how it's affecting India?
2023年7月24日 · Rising summer temperatures in Indian cities have raised levels of surface ozone pollution, which carries serious risks to human and crop health. Reducing the underlying air pollutants will be vital to bringing down ozone levels, but a delicate balance needs to be struck. The World Economic Forum’s Global Risks Report 2023 shows that fighting ...
The chemicals that were harming the ozone layer are back- and ...
2018年5月24日 · The researchers found that emissions of CFC-11 were between 2014 and 2016 up by a quarter from the average between 2002 and 2012. If the source can be identified and controlled soon, they said, the damage to the ozone layer “should be minor.”
Serious fun: UN launches ozone layer video game - The World …
2021年2月26日 · The Reset Earth game is one part of a series of activities aimed at making the climate an interesting and engaging topic for younger audiences over the next 12 months. Meg Seki, Acting Executive Secretary of the Ozone Secretariat, said: “The protection of the ozone layer cannot be considered a done deal. It must be a continuous effort by us ...
6 ways climate change is already affecting our lives
2022年6月24日 · But global warming is already changing the way many of us live or think. 1. Health suffers because of climate change. Climate change is the biggest health threat facing humanity, the World Health Organization says, estimating that it will cause around a quarter of a million additional deaths each year in 2030-50.
Afforestation can help to tackle climate change. Here's how
2021年11月3日 · Afforestation is establishing a forest, especially on land not previously forested. It remains one of the most effective means of tackling climate change, particularly when it is designed to rely on green energy. This natural climate solution reduces the impact of desertification, supports ecosystems, and removes CO2 from the atmosphere.