Here is a presentation on Climate Change

1. Climate Change

2. Climate Change

3. What is Climate Change?
 If the climate doesn’t remain constant, we call it climate change.
 The key question is what is a significant change – and this depends upon the
underlying level of climate variability
 Climate is the averageweather at a
given point and time of year, over
a long period (typically 30years).
 We expect theweather to change a
lot from day to day, but we expect
the climate to remain relatively
constant.

4. First of all, we should know
that weather and climate is
not the same thing.

5. WEATHER is what’s
happening outside of
our window right now.
WEATHER IS:
• Short term
• Limited area
• Can change rapidly
• Difficult to predict

6. CLIMATE IS:
• Long term
• Wide area
• Seasonal changes
• Measured over long
spans of time
CLIMATE is the average of
many years of weather
observation.

7. Effects of Climate Change
 An average increase in Earth’s temperature during the last
century
 Migrating birds are forced to change their time and place of
migration
 Melting of glaciers will lead to higher sea level, which will
cause floods and put many low-elevation regions at risk of
disappearing under water
 Longer summers can disrupt animal habitation
 New and widespread diseases because of warm climate
 Damaged crops due to sudden climate change and floods
 Average precipitation increase around the world
 Melting of polar ice—polar bears and other animals are
drowning
 Droughts, heat waves, extreme winters and storms, hurricanes,
typhoons

8. An average increase in Earth’s temperature during the last century

9. Melting of polar ice—
polar bears and other
animals are drowning

10. Droughts, heat waves, extreme winters and
storms, hurricanes, typhoons

11. Damaged crops due
to sudden climate
change and floods

12. CAUSES OF
CLIMATE
CHANGE

13. HUMAN CAUSES (Anthropogenic
or Man-made cause)
 Greenhouse
gases
 Deforestation
 Coal mining
 Burning of
fossil fuels
 Industrial
processes
 Agriculture

14.  In a way, the earth is like a glasshouse. The earth has
some very important gasses in the atmosphere that
keeps us warm.
Some of these gases are water vapour, carbon dioxide,
nitrous oxide and methane.
When the sun heats the earth, these gases keep the heat
on the earth's surface. Without these gases, heat would
escape back into space and Earth’s average
temperature would be about 60°F colder.

17. Deforestation, clearance,
clear cutting or clearing
is the removal of a forest
or stand of trees from
land which is then
converted to a non-forest
use. Deforestation can
involve conversion of
forest land to farms,
ranches, or urban use.

18. The burning of fossil fuels by
humans is the largest source of
emissions of carbon dioxide,
which is one of the greenhouse
gases that allows radioactive
forcing and contributes to global
warming

19. NATURAL CAUSES
 Volcanic
eruptions
 Ocean
currents
 Solar
Variation

20. Climate change seems to
accelerating

21. Changes already Happened

22.  Introduce automobiles with
new fuel system which
reduces 90% pollution
 Engages with businesses to
reduce carbon emissions
 Make others aware about the
problem
 Build E-waste recycling
factory
 Reduce vehicle use
 Improve energy-efficiency in
buildings
 Develop carbon capture and
storage processes
 Triple nuclear power
 Improve soil carbon
management strategies

23. Produce more fuel-efficient vehicles
Invest in renewable energies
Decrease deforestation/plant forests
Protect plants

24. Summary
Global surface temperatures have risen by
about 0.6°C since 1900
It is likely that this warming is larger than for
any century since 200AD, and that the 1990s
were the warmest decade in the last millennium.
The warming differs in different parts of the
world, but over the last 25 years, almost
everywhere has warmed, and very few places
have cooled.
Other changes have occurred, e.g.:
Sea level has risen by about 20 cm,
Ocean heat content has increased,
Almost all mountain glaciers have
retreated
Coincident with this global warming, levels of
CO2 (and other ‘greenhouse’ gases) have
dramatically increased, to levels higher than
those experienced for maybe millions of years.

25. Climate change…Is it the Beginning of
the end..??
The earth is heating..
Now..Its Upto Us..What
We can Do..??

26. Come Forward..
Join hands..
e World..to sustain ourselve