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Ozone hole in North America during 1984 (abnormally warm, reducing ozone depletion) and 1997 (abnormally cold, resulting in increased seasonal depletion). Source: NASA [46] The Antarctic ozone hole is an area of the Antarctic stratosphere in which the recent ozone levels have dropped to as low as 33 percent of their pre-1975 values. [47]
1-Chloro-1,1-difluoroethane (HCFC-142b) is a haloalkane with the chemical formula C H 3 C Cl F 2.It belongs to the hydrochlorofluorocarbon (HCFC) family of man-made compounds that contribute significantly to both ozone depletion and global warming when released into the environment.
Chlorine monoxide is a chemical radical with the chemical formula ClO •. It plays an important role in the process of ozone depletion. In the stratosphere, chlorine atoms react with ozone molecules to form chlorine monoxide and oxygen. Cl • + O 3 → ClO • + O 2. This reaction causes the depletion of the ozone layer. [1]
DENVER (AP) — Earth’s protective ozone layer is slowly but noticeably healing at a pace that would fully mend the The post Hole in ozone layer slowly healing, could mend by 2066, UN says ...
The largest Antarctic ozone hole recorded (September 1985) 2012 retrospective video by NASA on the Montreal Protocol. The Montreal Protocol on Substances That Deplete the Ozone Layer [2] is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion ...
FILE - In this NASA false-color image, the blue and purple shows the hole in Earth's protective ozone layer over Antarctica on Oct. 5, 2022. Earth’s protective ozone layer is slowly but ...
The radical Cl. is long-lived in the upper atmosphere, where it catalyzes the conversion of ozone into O 2. Ozone absorbs UV-B radiation, so its depletion allows more of this high energy radiation to reach the Earth's surface. Bromine atoms are even more efficient catalysts; hence brominated CFCs are also regulated. [11]
With climate change, plastic pollution and a potential sixth mass extinction, humanity has made some incredible messes in the world. The post Cleaner Earth: Healing ozone hole, less smog, more ...