Global warming


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Global warming

  1. 1. ContentIntroductionGlobalization and Global warmingFactors leading to Global warmingAverage temperaturesThe green house effectWho is responsible ?Available solutionsSummary
  2. 2. Why I have chosen this TOPIC?up-to-date problemeverybody has an opinionconnected with globalization
  3. 3. IntroductionGlobal warming refers to the rising average temperatureof Earths atmosphere and oceans and its projectedcontinuation. In the last 100 years, Earths average surfacetemperature increased by about 0.8 C (1.4 F) with abouttwo thirds of the increase occurring over just the last threedecades. Warming of the climate system is unequivocal,and scientists are more than 90% certain most of it iscaused by increasing concentrations of greenhouse gasesproduced by human activities such as deforestation andburning fossil fuels. These findings are recognized by thenational science academies of all the major industrializedcountries
  4. 4. Globalization and Global Warming The cause of global warming is human activity.Examples: Fossil fuel combustion associated with industrial development. The burning of forests. Biomass combustion - the burning of wood, coal, and dung for cooking and heat.
  5. 5. Globalization and Global WarmingThe inability to solve global warming, is emblematic of thefailures of globalization.However, it is also an opportunity to use the forces ofglobalization for the good of the planets health.
  6. 6. Factors leading to Global WarmingThe most important factors in halting climatechange is reducing levels of carbon dioxide in theatmosphere.The global average temperature has risen by 0.6ºC in the last 100 years.The cost of dealing with the effects of climatechange is almost $300 billion every year.
  7. 7. Projected Changes In Global Temperature
  8. 8. Past EARTH temperatures Graph based on data from the Climatic Research Unit of the University of East Anglia.
  9. 9. Past EARTH temperatures Graph based on data reported by Moberg,, in Nature, V. 433, 10 February 2005.
  10. 10. Past EARTH temperaturesGlobal temperature variation for the past 425,000 years. The present is at the right. The horizontal 0 line represents the1961–1990 average global temperature. The numbers on the left show the variation from that baseline in C.Image based on data from the National Oceanographic and Atmospheric Administration.
  11. 11. The Greenhouse EffectThe greenhouse effect is the rise in temperature thatthe Earth experiences because certain gases in theatmosphere trap energy from the sun.Without these gases, heat would escape back intospace and Earth’s average temperature would beabout 60ºF colder.Because of how they warm our world, these gases arereferred to as greenhouse gases.
  12. 12. The Greenhouse Effect
  13. 13. Who Is Responsible?The countries that emit most carbon dioxide contributemost to climate change.The worlds biggest polluter is the United States. Itproduces 20.4 tons of carbon dioxide per person, annually.The UK release 9.5 tons per person, annually.In China, carbon dioxide emissions are only 1.9 tons perperson, annually.
  14. 14. What Can Be Done?In May 1997 Consumer Alert formed a subgroup of theNational Consumer Coalition on climate change policy, the"Cooler Heads" Coalition, to address the consumer impact ofclimate change policies.A total of 178 countries (including 39 industrialized nations)signed up to the Kyoto Protocol in 2001.United States, the worlds largest emitter, has not come onboard.Reducing reliance on fuel will help to slow down the effectsand will help to adapt better to changes in the future.
  15. 15. Possible Implications Of Environmental Policies1. According to a report by the Department of Energy, stringent targets to reduce fossil-fuel emissions in the US will cause energy-intensive industries, including steel, iron, chemical, rubber and plastic, to flee from the developed countries to undeveloped countries, taking with them hundreds of thousands of jobs.
  16. 16. Possible Implications Of Environmental Policies2. Carbon taxes will cause relatively large income losses in the poorest one-fifth of the population. The poor, because they spend a greater proportion of their income on necessities, would have few ways to cut back to compensate for higher living costs.
  17. 17. Possible Implications Of Environmental Policies3. Stabilizing emissions at 1990 levels by 2010 would reduce the growth of US per capita income by 5% per year.4. Senior citizens on fixed incomes would find their energy costs escalating and their income dwindling.
  18. 18. Will The Policies Actually Stop Global Warming?By all estimates, only severe reductions in global CO2emissions -- on the order of 60 percent or more -- willalter the forecasts.The resulting economic dislocations would betremendous, potentially outweighing the negativeimpacts of even the most apocalyptic warmingscenario.If the policies do not include developing nations theresult will likely be a reallocation of emissions todeveloping nations, not a reduction of emissions.
  19. 19. Summaryglobal problematributable to human activitiesnature can change it by itselfdemand-suply law may change it