Ozone & Protocols
Environment · ओज़ोन और प्रोटोकॉल · 15 facts
Ozone layer in stratosphere protects from UV radiation
Montreal Protocol 1987 banned ozone depleting substances
CFCs chlorofluorocarbons are major ozone depleting chemicals
Ozone hole discovered over Antarctica in 1985
September 16 is International Day for Ozone Layer
Kigali Amendment 2016 added HFCs to Montreal Protocol
Vienna Convention 1985 was first treaty on ozone protection
Dobson Unit measures thickness of ozone layer
Ozone layer is present at 15 to 35 km altitude
Ground level ozone is a harmful pollutant in smog
Montreal Protocol is most successful environmental treaty
HCFCs are transitional substances being phased out globally
Ozone chemical formula is O3 and normal oxygen is O2 ozone has three oxygen atoms
Ozone depletion allows more UV-B radiation to reach Earth causing increase in skin cancer cataracts and crop damage
India ratified Montreal Protocol in 1992 and has successfully phased out most ozone depleting substances