Global Warming Atmosphere "UNLESS someone like you cares a whole awful lot, nothing is going to get better - it's not." --Dr. Seuss (The Lorax)
What is “Global Warming”? <ul><li>Global Warming is an increase in the average temperature of the earth's atmosphere, especially a sustained increase sufficient to cause climatic change. </li></ul><ul><li>What caused this? </li></ul>
<ul><li>While many greenhouse gases occur naturally and are needed to create the greenhouse effect that keeps the Earth warm enough to support life, human use of fossil fuels is the main source of greenhouse gasses. By driving cars, using electricity from coal-fired power plants, or heating our homes with oil or natural gas, we release carbon dioxide and other heat-trapping gases into the atmosphere. Deforestation is another significant source of greenhouse gases, because fewer trees means less carbon dioxide conversion to oxygen. </li></ul>Quit
Greenhouse gasses <ul><li>Greenhouse gases are gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of thermal infrared radiation emitted by the Earth’s surface, the atmosphere itself, and by clouds. </li></ul><ul><li>The most important greenhouse gases are </li></ul><ul><li>Water Vapor 36-70% </li></ul><ul><li>Carbon Dioxide 9-26% </li></ul><ul><li>Methane 4-9% </li></ul><ul><li>Ozone 3-7% </li></ul>Quit
Deforestation <ul><li>The cutting down and removal of all or most of the trees in a forested area. Deforestation can erode soils, contribute to desertification and the pollution of waterways, and decrease biodiversity through the destruction of habitat. </li></ul>Quit
What are the effects of Global Warming? <ul><li>1. Polar ice caps melting </li></ul><ul><li>2. Economic consequences </li></ul><ul><li>3. Increased probability and intensity of droughts and heat waves </li></ul><ul><li>4. Warmer waters and more hurricanes </li></ul><ul><li>5. Spread of disease </li></ul>source Quit
Warmer waters and more hurricanes <ul><li>As the temperature of oceans rises, so will the probability of more frequent and stronger hurricanes. We saw in this in 2004 and 2005. </li></ul>Quit
Polar ice caps melting <ul><li>First , it will raise sea levels. There are 5,773,000 cubic miles of water in ice caps, glaciers, and permanent snow. According to the National Snow and Ice Data Center, if all glaciers melted today the seas would rise about 230 feet. Luckily, that’s not going to happen all in one go! But sea levels will rise. </li></ul><ul><li>Second , melting ice caps will throw the global ecosystem out of balance. The ice caps are fresh water, and when they melt they will desalinate the ocean, or in plain English make it less salty. The stream shutdown or irregularity would cool the area around north-east America and Western Europe. Luckily, that will slow some of the other effects of global warming in that area! </li></ul><ul><li>Third , temperature rises and changing landscapes in the artic circle will endanger several species of animals. Only the most adaptable will survive. </li></ul><ul><li>Fourth , global warming could snowball with the ice caps gone. Ice caps are white, and reflect sunlight, much of which is reflected back into space, further cooling Earth. If the ice caps melt, the only reflector is the ocean. Darker colors absorb sunlight, further warming the Earth. </li></ul>Quit
Economic consequences <ul><li>Most of the effects of anthropogenic global warming won’t be good. And these effects spell one thing for the countries of the world: economic consequences. Hurricanes cause do billions of dollars in damage, diseases cost money to treat and control and conflicts exacerbate all of these. </li></ul>
Increased probability and intensity of droughts and heat waves <ul><li> Although some areas of Earth will become wetter due to global warming, other areas will suffer serious droughts and heat waves Africa will receive the worst of it, with more severe droughts also expected in Europe. Water is already a dangerously rare commodity in Africa, and according to the Intergovernmental Panel on Climate Change, global warming will exacerbate the conditions and could lead to conflicts and war. </li></ul>
Spread of disease <ul><li> As northern countries warm, disease carrying insects migrate north, bringing plague and disease with them. </li></ul>Quit More!!
Global Warming & Wildlife <ul><li>“ The National Wildlife Federation considers global warming to be “ the most dangerous threat to the future of wildlife.” </li></ul>next Quit back
Solutions <ul><li>Things you can do! </li></ul><ul><li>Alternative energy </li></ul><ul><ul><li>Wind power </li></ul></ul><ul><ul><li>Water power </li></ul></ul><ul><ul><li>Solar power </li></ul></ul>Sources Quit
Things you can do 50 things you can do 10 simple things you can do Quit
Solar Power <ul><li>Energy from the sun that is converted into thermal or electrical energy </li></ul>GE energy Quit Movie
Water Power <ul><li>The energy produced by running or falling water that is used for driving machinery, especially for generating electricity. </li></ul>Quit
Wind Power <ul><li>Wind power is the conversion of wind energy into a useful form, such as electricity, using wind turbines. </li></ul>American wind energy association Wind energy Quit
According to the WWF, the Golden Toad & the Harlequin Frog of Costa Rica are the first victims global warming Quit
Climate Change, as a result of global warming has created stress on wildlife, which has produced: Habitat Displacement Disruption to Natural Cycles Starvation Quit Solutions
Habitat Displacement <ul><li>Arctic Fox </li></ul>Quit
Insects and Disease <ul><li>Mosquitoes are a main concern for humans in our new world of global warming. </li></ul><ul><li>These insects carry diseases such as malaria, and West Nile that can be fatal to humans. With hotter and longer summers more mosquitoes are breeding, and attacking people. </li></ul><ul><li>There are many other disease such as Lymes disease, that are happening in greater numbers due to the longer breeding season. </li></ul><ul><li>Not only are their more insects in the world, but they are traveling into areas that previously could not. This is due to the warmer weather allowing these insects to occupy regions that were once to cold for them. </li></ul>
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