On January 9 local time, the World Meteorological Organization headquartered in Geneva, Switzerland pointed out that the ozone layer is expected to recover within 40 years, and the global phase-out of ozone-depleting chemicals has benefited efforts to mitigate climate change.
This is supported by the United Nations "on the Montreal Protocol on Substances that Deplete the Ozone Layer" Scientific Assessment Panel published the conclusions of the day.
The panel has conducted the first review of new technologies such as geoengineering and issued a warning about unintended effects on the ozone layer.
The panel, which publishes an assessment report every four years, confirms that phasing out nearly 99 percent of banned ozone-depleting substances has successfully protected the ozone layer, resulting in a significant recovery of the upper stratosphere and reducing human exposure to radiation from the sun. Harmful UV rays.
If the current policy remains unchanged, it is expected that the ozone layer over the Antarctic, the Arctic, and other parts of the world will return to the level of 1980 (before the ozone hole appeared) around 2066, 2045, and 2040, respectively.
According to this latest quadrennial report, the recovery of the ozone layer is on track, said Meg Secki, executive secretary of the Ozone Secretariat of the United Nations Environment Programme.
(Headquarters reporter Zhang Jinghao)