The cause of this trend is catalytic destruction of ozone by atomic chlorine and bromine , originating from chlorofluorocarbon (CFC) compounds, called freons, and bromofluorocarbon compounds, known as halons. Depletion of the ozone layer leads to an increase in ultraviolet light passing through the...
The ozone depletion process begins whenCFCs(chlorofluorocarbons) and other ozone-depleting substances (ODS) are emitted into the atmosphere. CFC molecules are extremely stable, and they do not dissolve in rain. After a period of several years, ODS molecules reach the stratosphere, about 10 kilomete...
Irvine, first warned of the danger of ozone deterioration in the atmosphere. Their predictions were corroborated by observation in 1985, when an ozone hole was detected above the Antarctic. The world took notice and agreed in Montreal in 1987 to do something about the depletion of the ozone lay...
臭氧消耗潜能/温室效应指数ODP- Ozone Depletion Potential 臭氧消耗潜能以CFC-11的值1.000作基准,来表示制冷剂消耗大气臭氧分子潜能的程度,所有其他化合物ODP值代表相对于R11损耗臭氧的程度。GWP- Global Warming Potential 温室效应指数是衡量制冷工质对气候变暖影响的指标值。当选用CFC-11的值作为基准值1.0时,称为HGWP...
Ozone Depletion Potential refers to the estimated impact of a substance on the depletion of the ozone layer, measured in terms of its equivalence to CFC-11 emissions. It helps in evaluating the potential ozone layer damage caused by greenhouse gas emissions, allowing more solar UV-B radiation to...
YearOzone depletion recognition and mitigation efforts 1913Fabry and Buisson discover the ozone layer in the earth’s atmosphere. 1928Thomas Midgley, Jr., produces dichlorofluoromethane, the first CFC, later patented by DuPont as Freon®.
With the help of diagrams explain how ozone layer gets depleted by CFC. View Solution Explain ozone layer, its depletion and effects of ozone depletion. View Solution Knowledge Check Ozone layer is being depleted. This is due to : ANO emission from supersonic jets Bchloroflurocarbon used as...
On the validation of one-dimensional CFC-ozone depletion models . Nature , 293 , 387 – 389 .Derwent, R. G., Eggleton, A. E. J. (1981) On the validation of one-dimensional CFC-ozone depletion models. Nature 293: pp. 387Derwent, R.G., A.E.J. Eggleton, “On the validation of ...
(e.g., melanomas) have been attributed to the destruction of the ozone layer. Ozone depletion is caused by the release of chloride ions from CFCs (chlorofluorocarbons) after release from air conditioners, spray cans, and manufacturing plants that produce electronics and plastics. CFCs degrade in...
Daikin to phase out ozone-depleting products by 2030 The seminar was held to sensitize the masses and the students on the green environment and harmful impacts of chlorofloro carbons (CFC and HCFC) on Ozone depletion. A tree plantation campaign was also launched at the CEES in line with the...