To understand ozone layer, it would be helpful to know the different layers of the atmosphere.
Check new design of our homepage! Causes and Effects of Ozone Layer Depletion That are Painfully True 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. Learn more about the process, causes, and effects of ozone layer depletion.
May 31, Formation of Ozone Ozone is a colorless gas found in the upper atmosphere of the Earth. It is formed when oxygen molecules absorb ultraviolet photons, and undergo a chemical reaction known as photo dissociation or photolysis.
In this process, a single molecule of oxygen breaks down into two oxygen atoms. The free oxygen atom Othen combines with an oxygen molecule O2and forms a molecule of ozone O3. The ozone molecules, in turn absorb ultraviolet rays between to nm nanometers wavelength, and thereby prevent these harmful radiations from entering the Earth's atmosphere.
The process of absorption of harmful radiation occurs when ozone molecules split up into a molecule of oxygen, and an oxygen atom. The oxygen atom Orecombines with the oxygen molecule O2 to regenerate an ozone O3 molecule.
Thus, the total amount of ozone is maintained by this continuous process of destruction, and regeneration. Ultraviolet radiations UVRare high energy electromagnetic waves emitted from the Sun. UV-C is unable to reach the Earth's surface due to stratospheric ozone's ability to absorb it.
|Ozone Layer and Causes, Effects and Solutions to Ozone Depletion - Conserve Energy Future||On this day of our commitment to save the ozone layer, let us try to know some important basics about ozone layer and its importance for our environment:|
|Environment for Kids: Ozone Layer Depletion||Ozone Layer Depletion What is ozone? Ozone is a gas made up of molecules that are formed by three oxygen atoms.|
|Location in Earth’s atmosphere||See Article History Alternative Title:|
|Ozone layer - Wikipedia||Sources[ edit ] The photochemical mechanisms that give rise to the ozone layer were discovered by the British physicist Sydney Chapman in Ozone in the Earth's stratosphere is created by ultraviolet light striking ordinary oxygen molecules containing two oxygen atoms O2splitting them into individual oxygen atoms atomic oxygen ; the atomic oxygen then combines with unbroken O2 to create ozone, O3.|
The real threat comes from UV-B, which can enter the Earth's atmosphere, and has adverse effects. Ozone layer depletion first captured the attention of the whole world in the latter half ofand since then, a lot of research has been done to find its possible effects and causes.
Various studies have been undertaken to find out possible solutions. Let us take a look at some of the causes and effects of ozone layer depletion.
A combination of low temperatures, elevated chlorine, and bromine concentrations in the upper stratosphere are responsible for the destruction of ozone.
The production and emission of chlorofluorocarbons CFCsis the leading cause of ozone layer depletion. These are often found in vehicle emissions, byproducts of industrial processes, refrigerants, and aerosols. ODS are relatively stable in the lower atmosphere of the Earth, but in the stratosphere, they are exposed to ultraviolet radiation and thus, they break down to release a free chlorine atom.
Chlorine Monoxide ClO This free chlorine atom reacts with an ozone molecule O3and forms chlorine monoxide ClOand a molecule of oxygen. Now, ClO reacts with an ozone molecule to form a chlorine atom, and two molecules of oxygen.
The free chlorine molecule again reacts with ozone to form chlorine monoxide. The process continues, and this results in the depletion of the ozone layer. Effects of Ozone Depletion As ozone depletes in the stratosphere, it forms a 'hole' in the layer. This hole enables harmful ultraviolet rays to enter the Earth's atmosphere.
Ultraviolet rays of the Sun are associated with a number of health-related, and environmental issues. Let us take a look at how ozone depletion affects different life forms.
Impact on Humans Skin cancer: Exposure to ultraviolet rays poses an increased risk of developing several types of skin cancers, including malignant melanoma, and basal and squamous cell carcinoma.
Direct exposure to UV radiations can result in photokeratitis snow blindnessand cataracts. Effects of UV rays include impairment of the immune system. Increased exposure to UV rays weakens the response of the immune system. Accelerated aging of skin: Constant exposure to UV radiation can cause photo allergy, which results in the outbreak of rashes in fair-skinned people.Ozone layer: Ozone layer, region of the upper atmosphere, between roughly 15 and 35 km (9 and 22 miles) above Earth’s surface, containing relatively high concentrations of ozone molecules.
Approximately 90 percent of the atmosphere’s ozone occurs from 10–18 km (6–11 miles) to about 50 km (about 30 miles) above Earth’s surface. The Danger and Prevention of Ozone Layer Depletion Prev NEXT The Montreal Protocol was an effort to encourage industries to switch to "ozone friendly" products.
It is present in very low concentrations throughout the latter, with its highest concentration high in the ozone layer of the stratosphere, which absorbs most of the Sun's ultraviolet (UV) radiation. Ozone's odour is reminiscent of chlorine, and detectable by many people at concentrations of as little as ♠ ppb in initiativeblog.comal formula: O₃.
American Chemical Society: Chemistry for Life. and leads to the destruction of atmospheric ozone.” The Antarctic ozone hole, as it came to be known, made depletion of the ozone layer a real and present danger to lawmakers and the public at large.
Predictions of significant increases in the incidence of skin cancer resulting from. Ozone Information & Properties - density, ozone, ozone odor,odor removal,odor destruction,VOC reduction, solubility, density, MSDS Ozone Properties and Characteristics - Ozone Properties and Advantages.
Ozone layer thickness is expressed in terms of Dobson units, which measure what its physical thickness would be if compressed in the Earth's atmosphere. In those terms, it's very thin indeed. A normal range is to Dobson units, which translates to an eighth of an inch-basically two stacked pennies.