International Ozone Day

[Audio] Hi friends today I am going to tell you world ozone day.

[Audio] Now first lets talk about why is ozone day celebrated In 1994, the United Nations General Assembly proclaimed 16 September the International Day for the Preservation of the Ozone Layer, commemorating the date of the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer (resolution 49/114).

[Audio] Now we will go to our next topic about international day or the preservation of the ozone layer International Day for the Preservation of the Ozone Layer (informally and simply called Ozone Day) is celebrated on September 16 designed by the United Nations General Assembly. This designation had been made on December 19, 2000, in commemoration of the date, in 1987, on which nations signed the Montreal Protocol on Substances that Deplete the Ozone Layer In 1994, the UN General Assembly proclaimed 16 September the International Day for the Preservation of the Ozone Layer, commemorating the date of the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer. The closure of the hole in the ozone layer was observed 30 years after the protocol was signed. Due to the nature of the gases responsible for depletion their chemical effects are expected to continue for between 50 and 100 years..

[Audio] Do you know what is ozone layer and why it is so important A layer in the earth's stratosphere at an altitude of about 10 km (6.2 miles) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun. The ozone layer in the stratosphere absorbs a portion of the radiation from the sun, preventing it from reaching the planet's surface. Most importantly, it absorbs the portion of UV light called UVB. UVB is a kind of ultraviolet light from the sun (and sun lamps) that has several harmful effects..

[Audio] Now let us talk about how to preserve ozone layer Avoiding Ozone-Depleting Products Check your fire extinguishers to find active ingredients. ... Don't buy aerosol products with chlorofluorocarbons (CFC). ... Dispose of pre-1995 refrigerators, freezers, and air conditioning units properly. ... Buy lumber, wood products and plywood that were not treated with methyl bromide..

[Audio] From all this points you would have known about what are the harmful effects of ozone layer depletion Ozone depletion can cause increased amounts of UV radiation to reach the Earth which can lead to more cases of skin cancer, cataracts, and impaired immune systems. Too much exposure to UV is believed to be contributing to the increase in melanoma, the most fatal of all skin cancers. The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons). 1,195 × 959.

[Audio] Now lets talk about ozone hole The ozone hole is not technically a "hole" where no ozone is present, but is actually a region of exceptionally depleted ozone in the stratosphere over the Antarctic that happens at the beginning of Southern Hemisphere spring (August–October). Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, and a much larger springtime decrease in stratospheric ozone (the ozone layer around Earth's polar regions. The latter phenomenon is referred to as the ozone holeThere are also springtime polar tropospheric ozone depletion events in addition to these stratospheric events..

[Audio] Thank you everyone for giving us your valuable time.