global warming

2. The human-induced climate change
is already occurring
and that future change is inevitable.

4. This summer's heat is
consistent with
a long-term warming trend
and looks to be
one of the hottest summers
on record.

6. People dying of heat stroke!

7. Global
warming is
one of the
most serious
challenges
facing us
today.

9. Global warming is
A rise in temperature of the Earth
caused by emissions
of carbon dioxide
and other heat-trapping gases
that are emitted primarily
by the burning of fossil fuels
and the clearing of forests.
These gases remain in our
atmosphere for decades
or even centuries.

10. The atmosphere around us is made up of
gases.
Some of these gases function like the
panes
of a greenhouse:
they let some radiation from the sun in
but also retain heat
in the atmosphere, that is:
they don't let all radiation back out.
As a result of this natural effect, it is
warmer on Earth than it
would be without these heat-trapping
gases.This is called the greenhouse
effect.

11. Human
contributions
of certain gases to
the atmosphere
have
increased this
greenhouse effect
resulting in
GLOBAL
WARMING.

12. World's leading climate scientists
feel that
the Earth's temperature is rising
and that its climate has changed
over the last century.
The scientific consensus is clear that
the
rise in temperature and change in
climate
are being caused in part by
human activities.

13. Causes of global warming
•Ozone hole
• heat-trapping-gases
• aerosol emissions
•over population
•overuse of energy
• economic growth
• land use changes
•Burning of fossil fuels
•Cement manufacture
•Deforestation

15. What is Ozone?
Ozone is a colorless gas.
Chemically, ozone is very active;
it reacts readily with
a great many other substances.
Near the Earth’s surface,
those reactions cause rubber to crack,
hurt plant life,
and damage people’s lung tissues.
But ozone
also absorbs harmful components
of sunlight, known as
“ultraviolet B”, or “UV-B”.
High above the surface,
above even the weather systems,
a tenuous layer
of ozone gas absorbs UV-B,
protecting living things below.

16. ozone hole
Each year for the past few decades
during the Southern Hemisphere spring,
chemical reactions involving chlorine
cause ozone in the southern polar
region to be destroyed rapidly and severely.
This depletion is known as the “ozone hole”.

18. Future adverse impacts from
projected global warming
extreme heat
drought,
rising sea levels,
and higher-intensity tropical storms
risk with our coastal property and resources,
questionable livability of our cities in summer,
Lower productivity of our farms, forests, and fisheries.
Sea level rise
Changes in precipitation patterns
Changing climate conditions
severe stress on forests

19. Melting glaciers

20. 1941
MELTING GLACIERS
2004

21. Changes in precipitation patterns
Changes in precipitation patterns
could have a significant impact,
especially in already water-scarce regions
that are likely to suffer from further
decreasing rainfall

22. Changing climate conditions
The ranges and abundance of plants and animals
could change dramatically under changing
climate conditions, and some of them are
likely to be unable to adapt or migrate
to new locations.

23. severe stress on forests
Possible severe stress on forests
due to rapid and greater warming

24. serious human health impacts,
Increasing heat stress,
Worsening air pollution,
Declining water quality,
Spread of infectious
diseases

25. Sea level rise
Sea level could rise by
3.5 to 34.6 inches between 1990 and 2100,
making coastal groundwater saltier,
endangering wetlands, and inundating
valuable land and coastal communities.

26. Drought

27. Tropical storms

28. Coastal property damage

29. Stress on forest life

30. Scarcity of water

31. Lower productivity of farms

33. Carbon dioxide
• Burning of fossil fuels,
• cement manufacture,
• deforestation and
• other land-use changes

34. Carbon dioxide (CO2) is one of those
heat-trapping (greenhouse) gases
that have increased significantly
in atmospheric concentration since
pre-industrial times and thus has
raised the greatest concern.

35. Methane
• Livestock,
• wet rice agriculture,
• solid waste,
• coal mining,
• oil & gas production,
• biomass burning

36. Nitrous oxide
• Nylon production,
• nitric acid production,
• biomass burning,
• cultivated soils,
• automobiles with three-way catalysts

37. Chlorofluoro-carbons
(CFCs)
• Chemical products & processes,
including refrigeration,
• industrial solvents,
• blown-foam insulation

38. Sulphur hexafluoride (SF6)
• Chemical products and
• Chemical processes

39. Trifluoro-
methyl sulphur pentafluoride
(SF5CF3)
• Unknown
• Minimal, but
• growing fast

40. Global warming is already under way.
The evidence is vast and the urgency of taking
action becomes clearer with every new
scientific study.
Some of the most obvious signs are visible
in the Arctic,where rising temperatures
and melting ice are dramatically changing
the region’s unique landscapes
and wildlife—as well as people’s
lives and livelihoods.

41. Listen to the cry
of mother Earth.

43. NOW THE
GLOBAL WARMING
SOLUTIONS………………………..

44. The global warming solutions
are
• Using energy more efficiently
• moving to renewable energy (wind, solar,
geothermal, and bioenergy)
• increasing the efficiency of the cars we
drive,
• reducing our dependence on oil and other
fossil fuels that cause global warming
• vehicle technology solutions

45. We can’t avoid all the consequences
of global warming,
but committing ourselves to action today
can help ensure our children and grandchildren
inherit a healthy world full of opportunity.

46. Let us spread awareness around
to save our planet from
further warming and
To reduce the existing level of
warming.

47. To protect the health and economic
well-being of current and future generations,
we must reduce our emissions of
heat-trapping gases by using the
technology, know-how,
and practical solutions
already at our disposal.

49. WINDMILL
USING RENEWABLE
SOURCES OF ENERGY

50. POLAR BEAR AT THE
MERCY OF HUMANS
Save them.
Reduce global warming!

51. LET US MAKE A
” COOL EARTH CLUB”
IN OUR SCHOOL TO SPREAD
AWARENESS
REGARDING THE PROBLEM
OF GLOBAL WARMING
AND ITS SOLUTION.