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Global warming


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    • &
    • BY :
  • 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.
    • Burning of fossil fuels (Coal/Crude oil)
    • Power plants  generate electricity
    • Transportation-----fuels for transports (E.g. LPG, kerosene, fuel oil)
    • Industrial processes (E.g. manufacture of
    • cement, steel, aluminium)
  • 4.
    • Concentration of greenhouse gases in the atmosphere is highly increasing by human activities
    • -> Leads to the increasing seriousness of global warming
    Increase in greenhouse gases
  • 5.  
  • 6.
    • GLOBAL SURFACE TEMPERATURE : I ncreased about 0.6°C/century since the late19th century & increased to 2°C/century over the past 25 years.
    • SEA LEVEL RISING : rising at an average rate of 1 - 2 mm/year over the past 100 years.
  • 7.
    • Increase in average temperature
    • More extreme heat waves during the summer;
    • Less extreme cold spells during the winter
    • Harmful to those with heart problems, asthma, the elderly, the very young and the homeless
    Direct Temperature Effects
  • 8.  
  • 9.  
  • 10.
    • Increase the risk of some infectious diseases [particularly that appear in warm areas; are spread by mosquitoes and other insects]
    • E.g. Malaria, dengue fever, yellow fever, encephalitis
    • Algal blooms occur more frequently as temperatures warm (particularly in areas with polluted waters)
    • Diseases (e.g. cholera) accompanying algal blooms become more frequent
    Climate-sensitive diseases
  • 11.
    • Rising temperatures and variable precipitation
    • Decrease the production of staple foods in many of the poorest regions
    • Increasing risks of malnutrition
    Food supply
  • 12.
    • Continuous rising in the sea level
    • Increase in the risk of flooding has n ecessitate population displacement.
    • More than half of the world's population now lives within 60km of the sea.
    • 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.
    Population displacement
  • 13.
    • Skin Cancer    an abnormal growth of skin tissues.
    • Premature aging make the skin thick, wrinkled, and leathery  
    • Cataracts   No longer have transparent lenses in their eyes
    • 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
    UV Exposure
  • 14.  
  • 15.
    • 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
    Serious concern for India
  • 16.
    • Set some laws to limit the amount of pollutants produced by factories.
    • Develop the skills of using renewable energy sources, e.g. solar energy & wind energy.
    • Build more plants to reduce the CO2 rate.
    • Reduce the use of plastic bags as burning of plastics produces (CH4) methane gases.
    • reduce the use of air-conditioner, which will emit CFCs.
    • use public transportation instead of private cars -> reduce the pollutants emitted by cars
    Measures on controlling the problem
  • 17. THANK YOU