Global warming


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Global warming

  1. 1. GLOBAL WARMING <ul><li>& </li></ul><ul><li>ITS EFFECTS </li></ul><ul><li>BY : </li></ul><ul><li>SUPRATIK CHAKRABORTY </li></ul>
  2. 2. Global Warming An average increase in the temperature of the atmosphere near the Earth ’ s surface and in the troposphere1, which can contribute to changes in global climate patterns
  3. 3. <ul><li>Burning of fossil fuels (Coal/Crude oil) </li></ul><ul><li>Power plants  generate electricity </li></ul><ul><li>Transportation-----fuels for transports (E.g. LPG, kerosene, fuel oil) </li></ul><ul><li>Industrial processes (E.g. manufacture of </li></ul><ul><li>cement, steel, aluminium) </li></ul>CAUSES
  4. 4. <ul><li>Concentration of greenhouse gases in the atmosphere is highly increasing by human activities </li></ul><ul><li>-> Leads to the increasing seriousness of global warming </li></ul>Increase in greenhouse gases
  5. 6. <ul><li>GLOBAL SURFACE TEMPERATURE : I ncreased about 0.6°C/century since the late19th century & increased to 2°C/century over the past 25 years. </li></ul><ul><li>SEA LEVEL RISING : rising at an average rate of 1 - 2 mm/year over the past 100 years. </li></ul>EFFECTS
  6. 7. <ul><li>Increase in average temperature </li></ul><ul><li>More extreme heat waves during the summer; </li></ul><ul><li>Less extreme cold spells during the winter </li></ul><ul><li>Harmful to those with heart problems, asthma, the elderly, the very young and the homeless </li></ul>Direct Temperature Effects
  7. 10. <ul><li>Increase the risk of some infectious diseases [particularly that appear in warm areas; are spread by mosquitoes and other insects] </li></ul><ul><li>E.g. Malaria, dengue fever, yellow fever, encephalitis </li></ul><ul><li>Algal blooms occur more frequently as temperatures warm (particularly in areas with polluted waters) </li></ul><ul><li>Diseases (e.g. cholera) accompanying algal blooms become more frequent </li></ul>Climate-sensitive diseases
  8. 11. <ul><li>Rising temperatures and variable precipitation </li></ul><ul><li>Decrease the production of staple foods in many of the poorest regions </li></ul><ul><li>Increasing risks of malnutrition </li></ul>Food supply
  9. 12. <ul><li>Continuous rising in the sea level </li></ul><ul><li>Increase in the risk of flooding has n ecessitate population displacement. </li></ul><ul><li>More than half of the world's population now lives within 60km of the sea. </li></ul><ul><li>Most vulnerable regions: Nile delta in Egypt, the Ganges-Brahmaputra delta in Bangladesh, many small islands, such as the Maldives, the Marshall Islands and Tuvalu. </li></ul>Population displacement
  10. 13. <ul><li>Skin Cancer    an abnormal growth of skin tissues. </li></ul><ul><li>Premature aging make the skin thick, wrinkled, and leathery   </li></ul><ul><li>Cataracts   No longer have transparent lenses in their eyes </li></ul><ul><li>Suppression of Immunity    Overexposure to UV radiation suppress proper functioning of the body's immune system and natural defenses of skin UV-B radiation weakens the immune system increases the chance of infection and disease </li></ul>UV Exposure
  11. 15. <ul><li>The   Indira Gandhi Institute of Development Research  has reported that, if the predictions relating to global warming made by the Intergovernmental Panel on Climate Change  come to fruition, climate-related factors could cause India's GDP to decline by up to 9%; contributing to this would be shifting growing seasons for major crops such as rice, production of which could fall by 40%. Around seven million people are projected to be displaced due to, among other factors, submersion of parts of Mumbai and Chennai, if global temperatures were to rise by a mere 2 °C </li></ul>Serious concern for India
  12. 16. <ul><li>Set some laws to limit the amount of pollutants produced by factories. </li></ul><ul><li>Develop the skills of using renewable energy sources, e.g. solar energy & wind energy. </li></ul><ul><li>Build more plants to reduce the CO2 rate. </li></ul><ul><li>Reduce the use of plastic bags as burning of plastics produces (CH4) methane gases. </li></ul><ul><li>reduce the use of air-conditioner, which will emit CFCs. </li></ul><ul><li>use public transportation instead of private cars -> reduce the pollutants emitted by cars </li></ul>Measures on controlling the problem
  13. 17. THANK YOU