GLOBAL WARMING

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GLOBAL WARMING
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What is Global Warming?

• Is a phenomenon that has been happening for a
  long time. The temperature of the earth has been
  increasing more or less continuously since the
  time of the cave man.
• Approximately 18,000 years ago the earth began a
  gradual process of warming up after more than
  100,000 years of Ice Ages. Much of North America,
  Europe, and Asia lay buried beneath great sheets
  of glacial ice.

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What Causes Global Warming?

• Scientists have determined that a number of
  human activities are contributing to global
  warming by adding excessive amounts of greenhouse
  gases to the atmosphere. Greenhouse gases such as
  carbon dioxide accummulate in the atmosphere and
  trap heat that normally would exit into outer
  space.

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The Green House Effect

• The "greenhouse effect" helps to moderate
  temperatures -- especially nighttime
  temperatures. Without the greenhouse effect, the
  average temperature of the Earth would be -18
  degrees C.
• Greenhouse gases allow sunlight to pass through
  Earth's atmosphere, but as sunlight strikes the
  earth it is partially changed to radiant heat.
  Greenhouse gases like carbon dioxide, water
  vapor, and methane help inhibit the escape of
  radiant heat back into space

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Effects of Global Warming

• Glacier retreat and disappearance

Greenland's glaciers are melting even faster than
previously thought and contributing more and more
to sea level rise caused by global warming. If
you live near the sea and think global warming
isn't a problem for you, it's probably time to
think again. The latest reports on increased
levels of glacial discharge, in the journal
Science, reports the amount of ice being dumped
into the ocean from the Greenland Ice Sheet has
doubled in the last 5 years. A full breakdown
would result in a catastrophic global sea level
rise of 7 meters. That's bye-bye most of
Bangladesh, Netherlands, Florida and would make
London the new Atlantis
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Destabilization of climates
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Sea Level Rise
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Forest Fires
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Effects on Agriculture
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How to Prevent Global Warming

• Cutting down carbon emissions
• Unplug Unused Electronics
• Turn off lights
• Recycle more
• Reduce the use of air-conditioners
• Preffer to walk
• Plant a Tree

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• THANK YOU ALL
• FOR YOUR ATTENTION