define ozone layer depletion
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ozone hole A severe depletion of ozone in a region of the ozone layer, particularly over Antarctica and over the Arctic. The depletion is caused by the destruction of ozone by CFCs and by other compounds, such as carbon tetrachloride (CCl4) and carbon tetrafluoride (CF4). ozone hole in Culture Expand.
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Ozone depletion Ozone is a gas that is present in the ozone layer in the stratosphere of the Earth. 1  There, it will absorb almost all ultraviolet light which is harmful to many organisms. The term Ozone depletion can refer to a number of distinct, but related phenomena: Since about the 1970s, there has been a decrease in total volume of the Ozone in the ozone layer, of about 4%, per decade. There are seasonal variations in the ozone layers; in springtime, there is less ozone in the ozone layer over the polar regions, esp. the south pole. This is generally known as ozone hole. In addition to these well-known stratospheric phenomena, there are also springtime polar tropospheric ozone depletion events. The details of polar ozone hole formation differ from that of mid-latitude thinning, but the most important process in both is catalytic destruction of ozone by atomic halogens.
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Ozone depletion Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about four percent in the total amount of ozone in Earth's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.[1] The latter phenomenon is referred to as the ozone hole ...
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The Causes and Effects of Ozone Layer Depletion Causes. The main cause of Ozone Depletion are CFCs. CFC's drift in the environment until they reach the stratosphere. The UV radiation splits the chlorine from CFC's which attracts one of the three ozone atoms and destroys the ozone into ordinary oxygen.CFC's were ordinarilly used to replace the ammonia and its effects.he UV radiation splits the chlorine from CFC's which attracts one of the three ozone atoms and destroys the ozone into ordinary oxygen. CFC's were ordinarilly used to replace the ammonia and its effects.
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- Ozone Depleting Chemicals CFCs The destruction of ozone is accelerated by certain trace gases containing nitrogen, hydrogen, bromine, and chlorine. These are referred to as ozone depletion chemicals.
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What is Ozone Depletion? Ozone depletion describes two related phenomena observed since the late 1970s: a steady decline of about four percent in the total amount of ozone in Earth's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. The latter phenomenon is referred to as the ozone hole.
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The Environment Ozone Layer Depletion. 1  The word ozone means smelly in Greek because the gas has a strong odor. 2  CFC molecules are highly stable and can last for up to 100 years. Unfortunately, this gives them plenty of time to find their way to the ozone layer. 3  One chlorine molecule from a CFC can destroy up to 100,000 ozone molecules. Ultraviolet rays can also have bad effects on nature. They can kill plankton, which is a major source of food in the ocean's food chain.
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- Ozone depletion, on the other hand, is the disappearance of ozone. The ozone layer is a dynamic protective layer above the earth; it's a layer approximately nine to 30 miles above the earth in the stratosphere (upper atmosphere).zone is actually a greenhouse gas, contributing to trapping heat in the stratosphere. If the ozone layer depletes, it affects the temperature of the earth. The depletion contributes to a global cool down and significant weather changes in higher areas near the stratosphere.
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Ozone depletion As explained above, the primary cause of ozone depletion is the presence of chlorine-containing source gases (primarily CFCs and related halocarbons). In the presence of UV light, these gases dissociate, releasing chlorine atoms, which then go on to catalyze ozone destruction.ince the ozone layer absorbs UVB ultraviolet light from the sun, ozone layer depletion increases surface UVB levels (all else equal), which could lead to damage, including increase in skin cancer. This was the reason for the Montreal Protocol.
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Out of Date If the ozone in the atmosphere from ground level to a height of 60 km could be assembled at the earth's surface, it would comprise a layer of gas only about 3 mm thick. A depletion of the ozone layer will increase the UV-radiation at ground level. Increasing doses of. may cause skin cancer, eye cataracts, damage to the immune system in animals as well as human beings, and have an adverse impact on plant growth.
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Ozone depletion Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% in the total volume of ozone in Earth 's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.ince the ozone layer absorbs UVB ultraviolet light from the sun, ozone layer depletion increases surface UVB levels (all else equal), which could lead to damage, including increase in skin cancer. This was the reason for the Montreal Protocol.
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- 1. Ozone depletion is the thinning of the earth’s ozone layer, which is responsible for keeping most of the sun’s ultraviolet radiation. This is caused by the presence of other greenhouse gasses in the atmosphere, and although naturally occurring, the rate of depletion is too fast for nature to cope up with.
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The Connection between Ozone Layer Depletion and UVB Radiation The Connection between Ozone Layer Depletion and UVB Radiation Reduced ozone levels as a result of ozone depletion ozone depletionA chemical destruction of the stratospheric ozone layer beyond natural reactions. Stratospheric ozone is constantly being created and destroyed through natural cycles.
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- Definition of ozone layer : an atmospheric layer at heights of about 20 to 30 miles (32 to 48 kilometers) that is normally characterized by high ozone content which blocks most solar ultraviolet radiation from entry into the lower atmosphere
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- Ozone depletion and its causes. Ozone depletion is the term commonly used to describe the thinning of the ozone layer in the stratosphere. Ozone. depletion occurs when the natural balance between the production and destruction of ozone in the stratosphere is. tipped in favour of destruction. Human activity is the major factor in tipping that natural balance, mostly from. releasing artificial chemicals, known as ozone‐depleting substances (ODS), to the atmosphere.
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- The main cause of ozone depletion and the ozone hole is man-made chemicals, in particular man-made halocarbon refrigerants, solvents, propellants, and foam-blowing agents (chlorofluorocarbon (CFCs), HCFCs, freons, halons), referred to as ozone-depleting substances (ODS).
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Montreal Protocol Montreal Protocol, officially the Protocol on Substances That Deplete the Ozone Layer, treaty signed on Sept. 16, 1987, at Montreal by 25 nations; 168 nations are now parties to the accord. The protocol set limits on the production of chlorofluorocarbonschlorofluorocarbons.
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ozone layer- definition and synonyms a layer of ozone in the Earth’s atmosphere that protects the Earth from the heat of the sun. Pollution in the air has caused holes to appear in the ozone layer. Synonyms and related words
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- Ozone depletion is the thinning of the earth’s ozone layer, which is responsible for keeping most of the sun’s ultraviolet radiation. This is caused by the presence of other greenhouse gasses in the atmosphere, and although naturally occurring, the rate of depletion is too fast for nature to cope up with.
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Ozone depletion Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% in the total volume of ozone in Earth 's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.hen stratospheric ozone levels decrease, higher levels of UVB reach the Earth’s surface. UV-driven phenolic formation in tree rings has dated the start of ozone depletion in northern latitudes to the late 1700s.
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What is Ozone Depletion? Ozone depletion. Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about four percent in the total amount of ozone in Earth's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.
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Deviation of Gas from Ideal Behavior Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% in the total volume of ozone in Earth 's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.zone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% in the total volume of ozone in Earth 's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.
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- The atmosphere is a complex natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion due to air pollution has been recognized as a threat to human health as well as to the Earth's ecosystems.
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An Overview    of Ozone Depletion in the Stratosphereby scientist and author    Rod Jenkins In the stratosphere, ozone absorbs virtually all of the solar ultraviolet (UV) radiation with wavelengths of less than 290 nanometers (nm) and most of it in the biologically harmful wavelength region of 290 to 320 nm (which is called UVB).