global warming

1. Global Warming

2. What is it?

3. Global warming
Global warming refers to an average
increase in the Earth's temperature,
which in turn causes changes in the
global climate.

5. What causes it?

6. Human Impacts
Atmospheric greenhouse gases
trap some of the outgoing
energy, retaining heat

7. Natural Impact
Change in sun’s energy output
Volcanoes, Water Vapor, Clouds

8. Greenhouse Gases
 CO2
 Methane
 Nitrous oxide
 Fluorinated compounds

9. The Greenhouse Effect
The warming of the atmosphere by
the trapping of long wave radiation
being radiated to space. The gases
most responsible for this effect
are water vapor and carbon
dioxide.

10. But how does the Greenhouse effect work?

11. A Greenhouse effect we can all relate to!

13. What Might Happen?

14.  Global temperatures will rise!!!
Is the climate warming? YES!
 Global surface temperatures have increased about 0.6°C
since the late-19th century, and about 0.2 to 0.3°C over the
past 25 years
 How about each year, how hot is it really getting? Lets take
a look at the average temperatures since the 1880’s and see
the projections of where we are going.
 Then we can look at the top 20 hottest ever recorded yearly
temperatures!

16. Twenty hottest year’s on record

17. Ice is melting
Upsala
Glacier,
Argentina,
which was
once one of
the
grandest
glaciers to
ever exist,
continues to
shrink on a
yearly basis

18. Ice is thinning…
Antarctica, home
to these Adélie
penguins, is
heating up. The
annual melt
season has
increased up to 3
weeks in 20 years.

19. Drought
• An increase in the occurrence of drought – Areas that lack precipitation over a
long period of time.
• As fast as global warming is transforming the oceans and the ice caps, it's having
an even more immediate effect on land.
• People, animals and plants living in dry, mountainous regions like the western U.S.
make it through summer thanks to snowpack that collects on peaks all winter and
slowly melts off in warm months. Lately the early arrival of spring and the
unusually blistering summers have caused the snowpack to melt too early, so that
by the time it's needed, it's largely gone.
• Global warming is tipping other regions of the world into drought in different
ways. Higher temperatures bake moisture out of soil faster, causing dry regions
that live at the margins to cross the line into full-blown crisis.

21. Pacific salmon
populations fell sharply
in 1997 and 1998, when
local ocean
temperatures rose 6
degrees F.
Flora & Fauna

22. Costa Rica announced that two-thirds of 110 species of colorful
harlequin frogs have vanished in the past 30 years

23. The Quiver tree (S.
Africa), is starting to
die off as it struggles
to survive in arid
conditions that are
now worsening

24. Forest fire are
becoming more and
more common due
to intense heat and
long periods
without
precipitation.
Bushfire numbers
are especially on
the rises in
countries like the
US and Australia
Extreme Weather

25. Tornadoes are
increasing in
number and in
severity, perhaps
an effect of global
warming

26. Hurricanes are
increasing in
numbers and in
severity,
Hurricanes require
warm ocean
temperatures in
order to form.

27. Things you can do to stop Global Warming

28.  Purchase a fuel efficient car (rated up to 32 mpg or more) to replace your most frequently used
automobile.
 Insulate your home, tune up your furnace, and install energy efficient shower heads.CO2
reductions = 2,480 lbs/year
 Leave your car at home two days a week (walk, bike or take public transportation to work
instead).CO2 reduction = 1,590 lbs/year
 Recycle all of your homes waste: newsprint, cardboard, glass and metal.CO2 reduction = 850
lbs/year
 Install a solar thermal system to help provide your hot water.CO2 reduction = 720 lbs/year
 Replace your washing machine with a low-energy, low-water-use machine.CO2 reduction = 440
lbs/year
 Buy food or other products with reusable or recyclable packaging instead of non-recyclable
packaging.CO2 reduction=230 lbs/year
 Replace your home’s refrigerator with a high-efficiency model.CO2 reduction = 220 lbs/year
 Use a push mower to cut your lawn instead of a power mower.CO2 reduction = 80 lbs/year
 Plant a couple of additional trees around your home.CO2 reduction = 20 lbs/year

29. So What can we do?

30. • Knowledge is Power! Just being informed on the issue of global warming is
one huge step forward. Sharing our knowledge with others and showing
them that we care is the best thing we can do.
• The next best thing is to be a leader and to live a life that reflects our
beliefs. We can only provide others with the information we know but we
can not force our beliefs on to them.
• As such, we must make the changes to our own lives that will better
benefit the environment and global warming as a whole. Believe it or not,
one person can make a difference!

31. Thank you