Source: science and impacts of climate change cd - presentation graphics (2002) msc environment canada/ ess natural resources canada, december activity 4 where is the ozone layer in this photo taken from space. The ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the earth's atmosphere however, various factors have led to the depletion and damage of this protective layer. Although it will take decades for the ozone layer to fully recover, the international response to the discovery of stratospheric ozone depletion has been a remarkable success chlorofluorocarbons (cfcs) were synthesized in the 1930s and initially used for refrigeration. Ozone depletion atmospheric ozone layer depletion is a serious problem currently facing the world the ozone layer protects humans, animals, and plants from harmful ultraviolet rays money and time are being spent on ozone repair, but the problem still exists.
To stratospheric ozone depletion natural resources of policy responses to stratospheric ozone depletion ozone layer shields the earth from harmful uv-b. Home resources ozone layer depletion, its causes, effects and control measures the following are various causes of ozone layer depletion,an effect that. Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in earth's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone over earth's polar regions. The term 'ozone hole' refers to the depletion of the protective ozone layer in the upper atmosphere (stratosphere) over earth's polar regions people, plants, and animals living under the ozone hole are harmed by the solar radiation now reaching the earth's surface—where it causes health problems, from eye damage to skin cancer.
Natural resources defense council i 3 h igh above our heads lies a fragile layer of ozone, a rare form of oxygen that blocks the sun's cancer-causing ultraviolet rays. In 1974, two chemists, sherwood rowland and anthony molina, hypothesized that cfcs could lead to substantial depletion of the stratospheric ozone layer their work demonstrated not only how the chemical structure of cfcs could lead to ozone degradation, but also how cfcs released at the earth's surface could reach the vulnerable ozone layer. The ozone layer is a belt of the naturally occurring gas ozone it sits 93 to 186 miles (15 to 30 kilometers) above earth, and serves as a shield from the harmful ultraviolet b (uvb) radiation.
Although ozone depletion has been a global issue, there is significant differences in distribution of ozone layer depletion across the world overall, ozone depletion increases with latitude with low levels of depletion at the equator and tropics, and highest depletion at the poles. Ozone layer depletion, is simply the wearing out (reduction) of the amount of ozone in the stratosphere unlike pollution, which has many types and causes, ozone depletion has been pinned down to one major human activity. Epa sued over ozone depletion by and other chemicals linked to depletion of the earth's protective ozone layer the natural resources defense council, in a suit filed with the us court of. The natural resources defense council works to safeguard the earth - its people, its plants and animals, and the natural systems on which all life depends saving the ozone layer: lessons for. Ozone depletion also explains much of the observed reduction in stratospheric and upper tropospheric temperatures the source of the warmth of the stratosphere is the absorption of uv radiation by ozone, hence reduced ozone leads to cooling.
Two panels of experts give testimony on the current status of the earth's ozone layer tv networks david d doniger member natural resources about scientific studies of ozone depletion and. Your business' role in ozone depletion there has been a recent increase in awareness when it comes to issues such as environmental protection, preservation of natural resources and prevention of pollution. The evolution of policy responses to stratospheric ozone depletion natural resources responses to stratospheric ozone depletion natural ozone layer and. Resource depletion is the consumption of a resource faster than it can be replenished natural resources are commonly divided between renewable resources and non-renewable resources (see also mineral resource classification .
The ozone layer does not face rampant ozone depletion anymore, as most governments and environmental agencies have worked hard to reduce the emission of cfcs this has proven to be a success and is the base for further work in reducing dangerous emissions. Warner college of natural resources today 197 nations have ratified the treaty, which has prevented large-scale ozone layer depletion and its harmful. Ozone layer depletion july 5, 2018 leave a comment written by the ozone layer is a thin layer in the atmosphere at an altitude of about 20-30 km that has a high concentration of ozone gas.