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Global Warming

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Global Warming

  1. 1. Global Warming Jakob Manning Mauricio de Vries Corriene Garabedian
  2. 2. A Problem <ul><li>As globalizations increases our capacity to impact our environment we must face the serious consequences of our industrialized society. </li></ul><ul><li>We wish to clarify, the fast approaching penalties of our everyday actions. </li></ul>
  3. 3. But First… <ul><li>A brief explanation of how global warming works. </li></ul>
  4. 4. A Natural Occurrence? <ul><li>Natural greenhouse gases create a natural greenhouse effect that we cannot live without. </li></ul><ul><li>If we did not have the greenhouse effect this world would be about 30 degrees Celsius colder. </li></ul><ul><li>That means that without the greenhouse effect our world would be uninhabitable. </li></ul>
  5. 5. <ul><li>Our climate is altered by natural causes and by human causes. </li></ul><ul><ul><li>Some natural causes include solar activity, volcanic emissions, changes in earths orbit and natural greenhouse gasses. </li></ul></ul><ul><ul><li>Human causes mostly include burning fossil fuels and exerting harmful gasses into the atmosphere. </li></ul></ul><ul><li>Human activities have the biggest influence on the increase of greenhouse gasses. In the past 50 years this has been the clearest. </li></ul>Responsible
  6. 6. Gases <ul><li>The primary greenhouse gases are water vapor carbon dioxide and methane. Water is the most common greenhouse gas. </li></ul><ul><li>Water is a short-term greenhouse gas. Lots of water can be added to the atmosphere by evaporation or removed by precipitation in a period of a few weeks. </li></ul><ul><li>Methane is an intermediate-term greenhouse gas. Once in the atmosphere methane is converted into carbon dioxide in a period of a few months to a few years. </li></ul><ul><li>Carbon dioxide is a long-term greenhouse gas. Once it is added to the atmosphere it can remain there for hundreds of years. Can you imagine that we still have pollution from World War 2 in our atmosphere? </li></ul>
  7. 7. &quot;Unfortunately, my generation has been somewhat careless in looking after our one and only planet.&quot; <ul><li>Left-a graph of global temperature trends in the past fifty years. </li></ul>Evidence of global warming is apparent all over earth.
  8. 8. Interesting evidence of global warming <ul><li>This phenomena is an example of how little we know about the possible implications of global warming </li></ul><ul><li>In far northern Canada the Native Inuit have noticed the sun rise significantly earlier in the year (2 months) </li></ul><ul><li>This has been caused by the warming of the layer of air above the snow. This distorts the sun’s light, literally causing it to rise earlier. </li></ul>
  9. 9. Temperatures <ul><li>Between the years 1860-1900 average temperatures have increased by 0.75 degrees Celsius. </li></ul><ul><li>Over the past 100 years global temperatures have risen by 1.3 degrees. </li></ul>
  10. 10. Temperatures (Cont.) <ul><li>This recent winter was the warmest winter on record of ever happening( in the history of our humble planet!) </li></ul><ul><li>10 out of the past 14 years are the warmest on record </li></ul>
  11. 11. Glacier and Ice Cap Melting <ul><li>Evidence of global warming is very apparent in the recent melting of ice sheets. </li></ul><ul><li>Two places were melting has become extremely visible are Antarctica and Greenland. </li></ul><ul><li>One problem with this is that much less heat is absorbed by snow than by water, thus worsening the effect as the ice retreats. </li></ul><ul><li>left- predicted artic melting </li></ul>
  12. 12. Unnaturally altered <ul><li>It’s impacting every notch of our delicately balanced ecological system, such as </li></ul><ul><ul><li>Animals </li></ul></ul><ul><ul><li>Viruses </li></ul></ul><ul><ul><li>Migration habits </li></ul></ul><ul><li>279 species of plants and animals have responded to global warming, migrating closer to the poles. </li></ul>
  13. 13. <ul><li>The WWF recently released their expectations, according to their research, a raise of 2-3C will transform 60% of the Amazon forest (home to 2/3 of the worlds plant species) into a arid savanna. </li></ul>Plant life <ul><li>The number of problems that will erupt from such an event are endless. </li></ul>
  14. 14. Dangerous consequences? <ul><li>Higher temperatures and melting ice caps are nice and all, but what’s this going to mean for us? </li></ul>&quot;It determines the ferocity and frequency of natural disasters. It can prompt water shortages, degrade land and lead to the loss of biodiversity.” “-is likely to become a major driver of war and conflict .” &quot;Global warming has profound implications for jobs, growth and poverty. It affects agricultural output, the spread of disease and migration patterns,&quot;
  15. 15. &quot;It is the poor -- in Africa, small-island developing states and elsewhere -- who will suffer most, even though they are the least responsible for global warming.&quot; <ul><li>As earth is altered by our actions, what will become of humanity as it adopts to our “new earth”? </li></ul><ul><li>The worlds top climate scientists met a week ago to summarize a massive report that “predicts dire consequences from global warming” </li></ul><ul><li>These scientists concluded that before the year 2080, </li></ul><ul><ul><li>3.2 billion people will experience water scarcity </li></ul></ul><ul><ul><li>400 to 600 will be threatened by hunger generated by global warming </li></ul></ul><ul><ul><li>Each year an additional 2 to 7 million people will be victims of coastal flooding </li></ul></ul>
  16. 16. Melting Glaciers <ul><li>One area of particular concern is the Himalayans. 1/3 of the worlds fresh drinking water comes from the run off from this glacier system. </li></ul><ul><li>A direct consequence from our polluting actions will be the disappearance of these vital glaciers. </li></ul><ul><li>What will happen to those couple billion who depend on this previously reliable water source? </li></ul>
  17. 17. Sea level rising <ul><li>Possibly the biggest threat brought by global warming is rapid sea level changes </li></ul><ul><li>Two years ago the entire Larsen B ice shelf broke away into pieces in less than a month. Scientists thought it would be at least a decade before this shelf melted, even with global warming. </li></ul><ul><li>Both Greenland and Western Antarctica are depleting at shocking rates. </li></ul><ul><li>Not all of global Warming's effects are unprecedented. </li></ul>
  18. 18. <ul><li>An interesting thought to consider is that this phenomenon of temperature changes has happened before, just never to this level. </li></ul><ul><li>The last time the Arctic’s were significantly warmer was 125,000 years ago. </li></ul><ul><li>At this time sea levels raised between 4-6 meters. </li></ul><ul><li>These last sea level fluctuations were naturally caused, but the effects of our current global warming have already succeeded the rates of any temperatures earth has experienced thus. </li></ul><ul><li>Obviously it can be assumed that sea level rising will surpass 4-6 meters. </li></ul>Sea level rising (cont)
  19. 19. Ending Slide <ul><li>The decision to change this situation must be one that is made individually and globally. </li></ul><ul><li>There has never been a better time to act. </li></ul><ul><li>Go plant a tree, buy a florescent light bulb </li></ul><ul><li>(this is where you clap) </li></ul>

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