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. Furthermore the ozone depletion is affecting the aquatic life, biogeochemical cycles, air quality and also contributing in global warming but in this review paper our main focus is on the effects of ozone depletion on human health . Br and cl both contribute to stratospheric ozone destruction the earth's stratosphere is a layer of the atmosphere that begins between 5 and 11 miles above the earth's surface and extends up to about 30 miles above the earth's surface. What causes ozone depletion the primary factors which contributed to the degradation of the ozone layer include the increase of the level of bromine and chlorine gases in the upper atmosphere as well as low temperatures.
Keywords: chlorofluorocarbons, ozone depletion, stratosphere, ultraviolet, montreal protocol, antarctic ozone hole with both the formation and destruction processes for ozone driven by sunlight and located predominantly in the upper stratosphere of thetropics, the ozone geographical distribution. Other natural factors contributing to climate change such as volcanic eruption and variation in sun-spot activity affect ozone layer depletion because ozone depletion in the stratosphere is formed under the influence of solar energy, any increase in the amount of radiation coming from the sun will increase the amount of ozone in the atmosphere. These gases bring chlorine and bromine to the stratosphere, which cause depletion of the ozone layer for example, chlorofluorocarbons (cfcs), once used in almost all refrigeration and air conditioning. Ozone layer the ozone layer is a layer in earth`s atmosphere, that has relatively high concentrations of ozone (o3) it is mainly found in the lower portion of the stratosphere, 15-35km above earth it is mainly found in the lower portion of the stratosphere, 15-35km above earth.
Ozone depletion describes the observed loss of ozone in the stratosphere over the past 50 years it encompasses both a steady thinning of the ozone layer at mid-latitudes and its catastrophic. Most ozone (about 90%) resides in a layer that begins between 6 and 10 miles (10 and 17 kilometers) above the earth's surface and extends up to about 30 miles (50 kilometers) this region of the atmosphere is called the stratosphere. 49 curious ozone layer depletion statistics these chemicals are a contributing factor to the ozone layer depletion that has been occurring since the invention of. This website addresses stratospheric ozone issues, including the science of ozone depletion, epa's regulatory approach to protecting the ozone layer, epa-approved alternatives to ozone-depleting substances, and sun safety.
Ozone layer depletion in the stratosphere depletion of the ozone layer in the stratosphere of density in the chamber by up to a factor of 100, even. Start studying chapter 12—air pollution, climate change, and ozone depletion the ozone layer is concentrated in the stratosphere climate change and ozone. This diffuse layer of ozone in the stratosphere protects life on earth from harmful solar radiation gases that contribute to ozone depletion, including their.
What are the causes of stratospheric ozone depletion surface of our planet while in stratosphere there is a rise in temperature in between the two lies a. The ozone layer or ozone shield is a region of earth's stratosphere that absorbs most of the sun's ultraviolet radiation it contains high concentrations of ozone (o 3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. Ozone layer is generally layer of ozone gas that located on stratosphere approximately 6 to10 miles above the earth surface and extended about 50km the ozone layer protect earth from lethel uv rays the ozone layer detoruated due to number of human produced chemicals like chlorine and bromine.
Cfcs affect the ozone layer by destroying ozone molecules cfcs, or chlorofluorocarbons, are normally stable molecules, but when uv rays strike them, they are broken down the chlorine atom released from a cfc wreaks havoc on ozone molecules ozone molecules are made up of three atoms of oxygen. The montreal protocol is an international agreement to address the causes of ozone depletion while several substances were addressed, chcs and hcfcs were the main ones that the international. What factors contribute to the destruction of the ozone layer global warming and ozone layer depletion what factors might contribute to the short.
The severe depletion of the antarctic ozone layer known as the ozone hole occurs because of the special atmospheric and chemical conditions that exist there and nowhere else on the globe the very low winter temperatures in the antarctic stratosphere cause polar stratospheric clouds (pscs) to form. Effects of ozone layer depletion - uv-b (the higher energy uv radiation absorbed by ozone) are generally accepted to be a contributory factor to skin cancer in addition, increased surface uv leads to increased. After 30 years of the montreal protocol, the ozone layer is gradually healing extremely cold temperatures in the winter stratosphere their contribution to stratospheric ozone depletion.
In 1989, the first comprehensive research expedition of the northern hemisphere's polar region showed that the arctic stratosphere is loaded in winter with the same destructive chlorine species which contribute to ozone depletion (zurer, 1993. Ozone in the stratosphere—a layer of the atmosphere between 15 and 50 kilometers (10 and 31 miles) above us—acts as a shield to protect earth's surface from the sun's harmful ultraviolet radiation. In each year beginning in the early 1980s the stratospheric ozone layer over antarctica has thinned dramatically and abnormally during springtime smaller decreases in stratospheric ozone amounts also have been observed over this same period in most other regions of the stratosphere subsequent. What is ozone layer of ods account for roughly 90% of total depletion of ozone layer in stratosphere these gases are carried to the stratosphere layer of.