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How Do Atmospheric Layer Affect Global Warming and Climate Change of the Earth?
X Mooreon 19 October 2011
Transcript of How Do Atmospheric Layer Affect Global Warming and Climate Change of the Earth?
Carbon Dioxide- .0039%
Nitrous Oxide- .00003%
Ozone- .000004% Water- 0-4%
Carbon Dioxide- .0039%
Nitrous Oxide- .00003%
Ozone- .000004% That means that the Greenhouse Effect is caused by less one percent (.04%) of the Earth's atmospheric gases Global Warming In recent years, the ozone layer has been weakening, letting the Earth absorb more heat than it can handle. A 2007 study states that the Earth's surface temperature rose .32 degrees in the 20th century, and will rise 11.5 degrees by the end of the 21st Century. The increase in global temperatures will cause
Sea levels to rise changing the amount of percipitation,
Expansion of deserts
Retreat of glaciers and other ice
Frequent and extreme weather events
And changes in agricultural yeilds Whats Causing it? Human activity contributes to global warming drastically. The chemicals and gases Humans use to perform their everyday activities have altered the composition of the atmosphere causing a build-up of tons of Greenhouse Gases. Scientists have found that Greenhouse Gases have significantly risen since the pre-industrial age. The burning of coal, oil, and natural gas, deforestation, agricultural and industrial procedures all contribute to the hole in our atmosphere. The Greenhouse Effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions What Does the Ozone Do? The Ozone Layer protects all living creatures by absorbing 99% of the Sun's UV radiation. Plants and and other living creatures can not live in heavy ultra-violet radiation, so it would be very difficult for anything to live on the Earth without the sheild the Ozone Layer provides. Where is it? The Earth's atmosphere is broken into different sections. The lowest layer is the troposphere, where almost all human activities take place. It extends about 6.21371 miles above the Earth's surface. The next layer is the stratosphere, where airline activity takes place. It begins at the end of the troposphere and ends at 31.0685 miles above the ground. At 9.32056 miles is a concentrated area in the stratosphere, called the Ozone Layer. Whats the Problem? As the world learned how to use chemicals as refrigerants, solvents, foam, and other products,the more people used chloroflurocarbons (or CFC's.) But what people didn't know was that the chemicals in these in the products they were making have very long atmospheric lifetimes,meaning the chemical will stay on Earth for a long time, and in this case, eventually will end up in the stratosphere. When CFC's come in contact with strong UV radiation, they begin to break down, and releases chlorine. The lasting effect on the ozone layer is the destruction of itself faster than it can be created. One chlorine molecule can break down 10,000 ozone molecules. Resources What are Current Climate Temperatures? How has the Climate Changed Over Time? Does this have to do with the Greenhouse Effect or the Hole in the Ozone? How is this Effecting the Earth? The world is become uncomfortably warm. As the sun's rays are reflected onto the Earth, the gases in the air are trapping in more heat, causing the temperatures to rise. The Ozone's effect on the climate is almost all temperature related. The more molecules of the ozone in the air there are, the more heat in absorbs, causing heat to rise. In an FAQ, Earth System Research Laboratory explained it as, "Atmospheric ozone has two effects on the temperature balance of the Earth. It absorbs solar ultraviolet radiation, which heats the stratosphere. It also absorbs infrared radiation emitted by the Earth's surface, effectively trapping heat in the troposphere. Therefore, the climate impact of changes in ozone concentrations varies with the altitude at which these ozone changes occur. The major ozone losses that have been observed in the lower stratosphere due to the human-produced chlorine- and bromine-containing gases have a cooling effect on the Earth's surface. On the other hand, the ozone increases that are estimated to have occurred in the troposphere because of surface-pollution gases have a warming effect on the Earth's surface, thereby contributing to the "greenhouse" effect." The layers in our atmosphere are extremely important in maintaining our ecosystem. They help sustain our environment so living things are able to live on it. The layers are able to reflect light and turn it into heat for our Earth, which is able to alter climate easily.
Atmospheric layers are able to contain gases within them, both harmful, like CFC's and water vapor, and good, like nitrogen and oxygen.
All climate and other effects are affected by atmospheric layers; without them we would have no greenhouse gases and global warming, but we would also have no living things. http://www.environment.gov.au/soe/2006/publications/drs/indicator/2/index.html
http://esrl.noaa.gov/csd/assessments/ozone/1998/faq9.html A 2007 study found that the Earth's surface temperature rose ,32 degrees in the 20th century and will rise 11.5 degrees by the end of the 21st century.