2. Our Focus Global warming – Overview Causes of global warming Effects of global warming Control global warming
3. What is Global Warming? Global warming is when the earth heats up (the temperature rises). It happens when greenhouse gases (carbon dioxide, water vapor, nitrous oxide, and methane) trap heat and light from the sun in the earth’s atmosphere, which increases the temperature. This hurts many people, animals, and plants. Many cannot take the change, so they die.
4. Global Warming - Examples Dec 2003 June 2002 Colorado River, Arizona
9. Greenhouse Effect The Sun’s energy passes through the car’s windshield. This energy (heat) is trapped inside the car and cannot pass back through the windshield, causing the inside of the car to warm up.
17. Ice 53% thinner in region of North Pole between 2001 and 2007 (NOAA Report Card 2008)
18. Ice only 3 feet thick in most locations (NOAA FAQ, 2007
19. In September 2007 an area the size of Florida (69,000 square miles) melted in six days (NSIDC 2007)
20. Humpback whales spotted in Arctic Ocean for first time in 2007Melting Sea Ice 7
21. Melting Sea Ice The Arctic Ocean could be ice-free in summer by 2040 (U.S National Center for Atmospheric Research, 2006) “Society can stillminimize the impacts on Arctic ice.” Dr. Marika Holland, National Center for Atmospheric Research 2000 2040
31. Climate Change Important factor affected as a result of global warming Climate change happens when there is a change in Sun’s output Earth’s orbit Drifting continents Volcanic eruptions Greenhouse gases
32. Weather Vs Climate Photo courtesy of Parker Rittgers / ADN reader submission “Climate is what we expect, weather is what we get.” Mark Twain US National Weather Service
35. Wildlife effects Effects of global warming on animals is one of serious threat to Biodiversity Extinction Some species migrates from one place to other for survival
36. Polar Bear Polar bear who depend on sea ice announced as an endangered species The numbers in the western Hudson bay down by 22% in 17 years The cubs perished from 61 to 22 per 100 females Increase in cannibalism
54. Global warming and Human Health Global warming will affect human health in a number of different ways The spread of infectious diseases will be affected Agriculture will be affected Extreme weather patterns will be affected The amount of smog near the ground will be affected The supply of freshwater available to humans will be affected
55. The infectious diseases Infectious diseases can be carried by many different organisms, among them are ticks, flies and mosquitoes. When the climate becomes warmer such organisms called vectors such as ticks, flies and mosquitoes can breed easier in the warmer wetter climates. As climate change begins to affect our planet to a greater extent the infectious disease carrying organisms will be able to reach higher altitudes and will have a longer season of breeding, increasing the likelihood of a human being in contact with the disease Also, as the climate warms the amount of algae and fish that produce toxins poisonous to humans will increase
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57. Also, there a potential trend for more hurricanes when the temperature of the seas increase because hurricanes are fueled by warm ocean waters
58. Although the actual number of hurricanes may not increase as a result of global warming, it is their intensity that is thought to increase, or their potential energy
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60. For many countries this change could mean death, in fact that projected number of starving people worldwide is expected to be 40-300 million people in addition to the 600 million already projected to be starving in 2060
61. Human Health and Water Supply Due to global warming the amount of annual precipitation and the amount of ice converted to freshwater from the polar ice caps is projected to increase A rise in sea level is projected for 2100 of as much as 40 centimeters This rise in sea level could not only destroy human dwellings and human places of agricultural production but could also destroy many sea-side aquifers which would deplete the general water supply for humankind
62. Human Health and Air Conditions Due to global warming, the amount of smog that is created by nitrous oxide, or ozone that is near the ground, will increase An increase in the amount of smog near the ground level could potentially result in fatally warm summer days for those humans sensitive to such gases As gases such as smog enter human lungs, they can increase the potential of lung infection which can lead to death
63. What can we do? Ways to stop/control global warming
64. Energy Conservation It is one of the most important task that should be considered Using alternate sources of energy in daily life is better way to conserve energy
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66. REDUCE USE Plastic bags and cups do not decompose so harmful to environment Paper bags and cups are eco friendly and easily decomposable Reduce the usage of cars for short distances Walk /use cycles for short distances
67. Turn to compact florescent light which saves more than 80% of energy
68. Conserve electricity! DO NOT leave appliances on standby Turn off the lights when you leave. Avoid turning up the air conditioner. Instead dress lightly or use a fan. Keep rooms cool by closing the blinds, shades, or curtains.
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70. Covers and boxes which comes with products can be used for decorative purposes
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73. Advantages of 3R’s Increase in energy Reduction of wastages Less pollution Efficient use of resources
