But there remains a challenge to enforce good practices in certain countries. Read more at straitstimes.com.
SINGAPORE – In a rare piece of good news for the environment, a United Nations-backed panel of experts has stated that the earth’s ozone layer is set to recover within decades.
Because the ozone layer prevents harmful ultraviolet radiation from reaching the earth’s surface, a return of TCO to 1980 levels signifies an abatement of the increased risk of skin cancer for people living in temperate latitudes, though it does not make as big an impact to equatorial locations like Singapore, said Associate Professor Koh Tieh Yong. He is a weather and climate scientist at the School of Science and Technology at the Singapore University of Social Sciences.
The report noted that by phasing down ODS and HFC, the protocol has helped to avoid an additional 0.5 - 1 deg C of global warming, as compared to an extreme scenario where emission levels increased by 3 - 3.5 per cent each year. Said Prof Lee: “Overall, the global community has made great strides to eliminate the consumption and production of ozone depleting substances. There remains an enforcement issue in certain countries, notably China.”
A Nasa image which shows the ozone hole over Antarctica on Oct 5, 2022. Blue and purple sections indicate where there is the least ozone. PHOTO: NASA
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