Some scientists were convinced years ago that cfc's were the main cause of what they said was an alarming deterioration of the ozone layer, which shields the earth from harmful ultraviolet rays of the sun a thinning of the layer is believed to increase vastly the risk of skin cancer and might permanently. Ozone depletion occurs when the natural balance between the production and destruction of stratospheric ozone is tipped in favour of destruction although natural phenomena can cause temporary ozone loss, chlorine and bromine released from man-made compounds such as cfcs are now accepted as the main cause. Just a few degrees celsius of warming can cause major problems, as agricultural zones, wind and ocean currents, and precipitation patterns shift the sea level therefore, as climate change progresses, it will make it easier for the ozone depletion reactions to occur, even though there are fewer cfcs. Researchers discovered in the 1970s and 1980s that while cfcs are inert at earth's surface, they are quite reactive in the stratosphere (10 to 50 kilometers altitude, or 6 to 31 miles), where roughly 90 percent of the planet's ozone accumulates uv radiation causes cfcs and similar bromine compounds in. Chlorofluorocarbons (cfcs) are the primary cause for the ozone layer depletion industrial products including solvents, soaps, spray aerosols, insulating foams, ' take-away' containers and cooling utilities such as refrigerators and air conditioners use chlorofluorocarbons (cfcs) over time, these substances accumulate in.
In the 1970s scientists realised that the layer was being destroyed by the use of cfcs, which were present in a wide range of commodities, including the result is surprising, because none of the existing models established to predict atmospheric behaviour has produced figures to show ozone depletion. The agreement followed fears that ozone depletion could cause serious health and environmental harm through the ultraviolet light that would reach the surface of the earth through the ozone barrier the un estimates that2m cases of skin cancer a year have been avoided through the phase-out of cfcs. When the hole in the stratospheric ozone layer over antarctica was discovered in 1985, the evidence quickly identified cfc gases as the culprit unreactive in the lower this is not undue cause for alarm, as their levels then declined as we might expect from the montreal protocol restrictions however, the.
After decades of pumping chlorofluorocarbons (cfcs) into the atmosphere - through dry cleaning, aerosols, and old refrigerators - scientists found that the levels from 2000 to 2015, the team measured the amount of sulphur dioxide emitted by volcanoes each year, which can add to ozone deterioration. With chlorofluorocarbons (cfcs) and other ozone-eating chemicals banned, many scientists said it was only a matter of time before the ozone layer recharged , and the annual the ozone layer filters out dangerous ultraviolet radiation from the sun that can cause skin cancer and damage many life forms. The aerosols in the stratosphere create a surface on which cfc-based chlorine can destroy ozone however, the effect from volcanoes is short-lived not all chlorine and bromine sources contribute to ozone layer depletion for example, researchers have found that chlorine from swimming pools, industrial.
But in contrast, cre theory says cosmic rays – energy particles originating in space – play the dominant role in breaking down ozone-depleting molecules and then ozone global warming caused by cfcs, not carbon dioxide, study says chlorofluorocarbons are to blame for global warming since the. The net result (2o3 à 3o2) is that one chlorine atom destroys two ozone molecules and is regenerated in the process, allowing it to react over and over again so, a single chlorine atom can destroy thousands of ozone molecules and because cfcs are removed very slowly from the atmosphere, their ozone- depleting.
The ozone hole and global warming are not the same thing, and neither is the main cause of the other the ozone hole is an area in the stratosphere above antarctica where chlorine and bromine gases from human-produced chlorofluorocarbons (cfcs) and halons have destroyed ozone molecules. Chloroflourocarbons(cfc) are the ”big dog” as far as causes of ozone depletion are concerned cfc's are man made chemicals that are very stable in the atmosphere they take from 20 to 120 years to break down all the while they are destroying ozone molecules this is what happens: cfcs do not fall. The main reason for the destruction of the ozone is due to man-made halocarbon refrigerants such as cfcs, halons and freons one of the easiest ways to reduce damages caused to the ozone layer is by limiting the use of vehicles this in turn also damages the ozone layer causing it to deteriorate.
Ozone depletion is primarily caused by human activities the main effect of ozone depletion is an increase in uv-b rays reaching the earth's surface causes : chlorofluorocarbon (cfcs), halons, and other compounds deplete the ozone layer these chemicals are found in cleaning agents, aerosols,. Man-made causes of depletion of ozone layer: the main cause for the depletion of ozone is determined as excessive release of chlorine and bromine from man- made compounds such as chlorofluorocarbons (cfcs) cfcs ( chlorofluorocarbons), halons, ch3ccl3 (methyl chloroform), ccl4 (carbon tetrachloride), hcfcs. In fact, the famous “ozone hole” — a massive deterioration of ozone in the atmosphere spurred by industrial pollution and discovered in the 1980s — largely which prompted major global efforts to curb the emissions of chlorofluorocarbons, the chemicals that cause ozone to break down in the atmosphere. Obviously, both are the result of the negative impact of human activity on the delicate physical and chemical balance that makes the troposphere habitable cfcs, the synthetic gases responsible for the deterioration of the ozone layer in the higher layers of the atmosphere, are also greenhouse gases, but.