Global Warming is the increase in the average temperature of the earth's surface. The global average temperature has increased about 0.7 to 1.4 degrees F(0.4 to 0.8 degrees C). The increase in temperature was was observed during the 20th century caused by the increasing concentrations of greenhouse gases, which results from human activities such as burning of fossil fuel and deforestation. Many Experts estimate that the average temperature will rise an additional of 2.5 to 10.4 degrees F(1.4 to 5.8 degrees C) by the year 2100. Evidence for the warming of the climate system includes observed increases in global average air and ocean temperatures, widespread melting of ice, and rising of global average sea level. The rate of increase would be much larger than most past rates of increase. Continuation of Global Warming could have many damaging effects is could harm the plants and animals that live in the sea. It could also force plants and animals to change their habitat. Weather pattern would change resulting from the increase of damaging storms. It could melt enough polar ice to raise the sea level and at certain parts of the world, human diseases could rapidly spread. Many crop production may decline.
When solar radiation passes through out atmosphere the molecules that constitute our air absorbs it. The majority of solar heat is absorbed by our planet's surface. Different types of surfaces absorbs heat in different ways. Everything that the sun's rays fall upon either absorbs or reflects heat. In the case of out snowy Polar Regions that heat is reflected back from the planet. In the case of our cities it is trapped on the surface. From there it radiates outward where living things attempt adjust to the relative heat or cold. Our planet's original design was for a balance of all components. Our planet absorbs enough heat to make us warm hopefully not to much heat to burn us. The greenhouse effect occurs planet wide when solar radiation bounces of from the Earth instead of passing through our atmosphere and outward into space.
The accelerating destruction of the rainforests that from a precious cooling band around the Earth's equator, is now being recognized as one of the main causes of climate change. Carbon emission form deforestation far outstrip damaged caused by planes, automobiles and factories.
Scientists say that one day's deforestation is equivalent to carbon footprint of eight million people flying to New York. Most people think of forest only in terms of the Carbon Dioxide that they absorb. The rainforest of the Amazon, the Congo basin and Indonesia are thought of as lungs of the planet, but the destruction of those forests in the next years will pump more Carbon Dioxide in the atmosphere.
Effects of Global Warming:
1. Spread of disease - as northern countries warm, disease carrying insects migrate north, bringing plague and disease with them.
2. Warmer waters and more hurricane - as the temperature of oceans rises, so will the probability of more frequent and stronger hurricanes.
3. Increased probability and intensity of droughts and heat waves - although some areas of Earth will become wetter due to global warming, other areas will seriously suffer from droughts and heat waves, with more severe droughts expected in Europe.
4. Economic Consequences - Hurricanes causes billion dollars in damage and disease cost money to be treated.
5. Polar ice caps melting - There are 5,773,000 cubic miles of water in ice caps, glaciers and permanent snow. Melting ice caps will throw the global ecosystem out of balance. The ice caps are fresh water which means that when melted it would desalinate the ocean or make it less salty. The temperature rises and changing landscapes in the Artic circle will endanger several species of animals. Global warming could melt all the ice caps gone which at some part helps to cool the earth. If the ice caps melt only the ocean will be the reflector. Darker colors absorb sunlight which will result to further warming of the Earth.
Ways to fight Global Warming:
1. Reduce, Reuse and Recycle - By recycling half of your household waste, you can save 2,400 pounds of carbon dioxide annually.
2. Change a Light Bulb - Replacing just one 60-watt incandescent light bulb with a CFL will last 10 times longer incandescent light bulb , uses two-thirds less energy and produces lesser heat.
3. Drive less & Drive smart - Less driving means fewer emissions.
4. Use the "OFF" switch - Save electricity and reduce global warming by turning off light when leaving a room, also remember to turn off all appliances that are not in use.
5. PLANT A TREE!
- We all do know that during photosynthesis plants absorb Carbon Dioxide and releases oxygen. They are part of the natural atmospheric exchange cycle here on earth. A single tree could absorb approximately one ton of Carbon Dioxide during its lifetime.