Causes of ozone depletion pdf

Causes of ozone depletion pdf
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Download / Read Online Causes of ozone depletion pdf
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Ozone depletion is the thinning of this layer as a result of the release of certain chemicals into the atmosphere. These chemicals, known as ozone-depleting substances (ODS), include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and halons. Ozone depletion has a number of harmful effects on the environment and human health.
filexlib. ozone depletion has largely been controlled through the Montreal Protocol concern about climate change continues to grow. The International Convention on Climate Change (ICCC) in The replacement of halon 1301 with either E-13 or CEA-410 causes a greater impact on the climate than retention of Halon 1301. The total emitted GW increases
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). ODS have been proven to be eco-friendly, very stable, and non-toxic in the atmosphere below.
This chlorine reacts with the Ozone layer and forms oxygen and chlorine monoxide. The ozone depletion reactions are: Cl + O 3 → ClO + O 2. When chlorine monoxide reacts with another molecule of oxygen, it breaks up again and releases chlorine which can again react with ozone and cause further depletion. ClO + O → Cl + O 2
The ozone layer helps to protect life from harmful ultraviolet radiation. Find out what caused the ozone hole, and how the 1989 Montreal Protocol sought to put an end to ozone depletion.
The gradual deterioration of the earth’s ozone layer in the upper atmosphere caused by the discharge of chemical compounds containing gaseous bromine or chlorine from factories or other human activities is referred to as ozone layer depletion. The consequent increase in UV rays would lead to an increase in skin cancer among humans and
See ozone depleting substance. (HCFCs). For each ODS, this page provides the compound’s atmospheric lifetime, Ozone Depletion Potential Ozone Depletion PotentialA number that refers to the amount of ozone depletion caused by a substance. The ODP is the ratio of the impact on ozone of a chemical compared to the impact of a similar mass of CFC-11.
Cause of Ozone Layer Depletion The main factor for ozone depletion is CFCs. These are emitted by solvents, spray aerosols, freezers, and air conditioners. UV light destroys chlorofluorocarbon molecules in the stratosphere, releasing chlorine atoms. These atoms degrade ozone by interacting with it.
Chloroflourocarbons are major cause of ozone depletion. These substances should be banned or we should use their alternatives so that in future we can protect ourselves from the harmful effects of UV radiation. Human eye and skin are the most exposed part of the body to these radiations.
the ozone in ozone layer and cause ozone depletion. Due to this reason UV radiations reach the Earth surface and affect all ecosystems: terrestrial and aquatic. It even affects the microbes, plants, inert material and also pollute the air we breathe. Ozone Depletion Mechanism Ozone is formed in stratosphere and is also naturally broken down so
4 / 5 The depletion of the ozone layer has harmful effects on the human health, animals, environment and marine life. Studies demonstrate that an increase in UV-B rays causes a higher risk of skin cancer, plays a major role in malignant melanoma development, sunburns, quick ageing, eye cataracts, blindness and weekend immune system. Natural Causes: The ozone layer is depleted by a number of natural causes like the sunspot cycle, volcanic eruption. However, the percentage effect is less i.e around 1-3%. 5. Fossil fuels destroy the ozone layer. The three main forms of fossil fuels are oil, natural gas, and coal. Fossil fuels are used in cars, factories, and for electricity.
4 / 5 The depletion of the ozone layer has harmful effects on the human health, animals, environment and marine life. Studies demonstrate that an increase in UV-B rays causes a higher risk of skin cancer, plays a major role in malignant melanoma development, sunburns, quick ageing, eye cataracts, blindness and weekend immune system. Natural Causes: The ozone layer is depleted by a number of natural causes like the sunspot cycle, volcanic eruption. However, the percentage effect is less i.e around 1-3%. 5. Fossil fuels destroy the ozone layer. The three main forms of fossil fuels are oil, natural gas, and coal. Fossil fuels are used in cars, factories, and for electricity.
Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below). Ozone sits in the upper atmosphere and absorbs ultraviolet radiaton, another type of solar energy that’s harmful to humans, animals and plants.
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