2. Global Warming is the increase of Earth's average surface
temperature due to effect of greenhouse gases, such as
carbon dioxide emissions from burning fossil fuels or from
deforestation, which trap heat that would otherwise
escape from Earth. This is a type of greenhouse effect.
3. FACTS ABOUT GLOBAL WARMING
• Emissions like carbon dioxide, nitrous oxide and other greenhouses gases will remain in the atmosphere for many years
making impossible to eliminate global warming for several decades.
• Since 1880, the average temperature has risen by 1.4-Fahrenheit degrees
• The Arctic is one of the worst places to be effected by global warming.
• Humans are emitting more carbon dioxide in the atmosphere, faster than the absorbing rates of plants and the oceans.
• 200o-2009 has been the hottest decade periods of the earth.
• Between 2000-2100, the heat related deaths will rise by 150,000.
• Droughts, hurricanes, wildfires, extinction on endangered species, melting of polar ice caps, storms are few of the effects of
global warming.
4. How does Global Warming work?
(a) Earth absorbs most of the sunlight it receives
(b) Earth then emits the absorbed light's energy as
infrared light
(c) greenhouse gases absorb a lot of the infrared light
before it can leave our atmosphere
(d) being absorbed slows the rate at which energy
escapes to space; and
(e) the slower passage of energy heats up the
atmosphere, water, and ground.
6. 1800-1870
Level of co2 measured in ancient ice is 290ppm (parts per million )
18 24
Fourier calculates that earth would b more colder if it lacked atmosphere
1859
Tunstall discovered some gas block infrared radiation
1896
Arrhenius publishes first calculation of gw from human emission of co2
1930
Milankovitch propose orbital change as the cause of ice age
1956
Ewing and donn offer feedback of quick ice age onset
1970
First earth day
Creation of US national oceanic and atmospheric administration
7. 1981
IBM personal computer introduced
1982
Strong gw since 1970s reported
1981 was the warmest yr on record
1995
Reports detect serious warming likely to be in the coming century
2002
Global dimming due to pollution
2003
Concern about collapsing ice sheets
Rise in the sea level
8. 2004
Major books,movie and artwork featuring gw appear
2009
Experts warn abt gw arriving faster
2012
Heat waves,droughts,extremes of precipitation made worse by gw
2013
Atmosphere is warning and oceans have continued to get rapidly warmer
9. Causes
• The Co2 concentration increased in atmosphere
about 30% due to human activities.
• It is predicted that we’ll soon reach carbon dioxide
concentrations that haven’t been seen on Earth in
the last 50 million years.
10. 1. Deforestation
• The use of forests for fuel is one cause of deforestation.
• We are chopping forests which is not a good sign and has also leads to dec
rease in rainfalls
• deforestation releases large amounts of carbon
11. 2. Methane and Nitrous oxide
emissions
• From agriculture, Arctic sea beds and factories
methane gas.
• As methane escapes from the Arctic seabed, the rate of global
warming increases, accordingly.
• With the increase in the amount of concentrated livestock pr
oduction, the levels of methane released into the atmosphere
is increasing.
12. 3. Aerosols
They scatter and absorb solar and infra-red radiation.
They may change the micro-physical and chemical properties of clouds and possibly
their lifetime and extent
13. 4. Sea level
Increase in sea levels is the result of melting of two massive ice
sheets in Antarctica and Greenland as researched by scientists.
Many nations around the world will experience the effects of
rising sea levels, which could displace millions of people,
14. 5. Water Vapor
• Water vapor is increasing in the atmosphere
due to carbon dioxide-induced warming.
• Two-thirds of the heat trapped by greenhouse
gases is contained in water vapor, and as the
average temperature on the planet to raises.
15. 6. Fossil Fuels
Each time a fossil fuel burn, carbon dioxide levels in the atmosphere
increase.
CO2 absorbs infra-red energy emitted from the earth’s surface, preventing it
from returning to space.
16. 7. Population Increase
• As the population on Earth increases, food
and housing demands along with other basic
necessities also increase.
19. • No population of a large vertebrate animal in the history of the planet has
grown that much, that fast, or with such devastatig consequences to its
fellow earthling.
• No population of a large vertebrate animal in the history of the planet has
grown that much, that fast, or with such devastating consequences to its
fellow earthling.
• No population of a large vertebrate animal in the history of the planet has
grown that much, that fast, or with such devastating consequences to its
fellow earthling.
• Forty percent of the planet’s land is devoted to human food production,
up from 7 percent in 1700.
27. • Temperatures will continue to rise
ACTUAL SUMMERTIME SADNESS
• Changes in precipitation patterns
ALL YEAR ROUND RAINS?
• More droughts and heat waves
NOT COOL. CANT SEE MORE FARMERS DIE.
• Hurricanes will become stronger and more intense
FLYING HOUSES, MORE FLOODS, AND DESTRUCTION ALL OVER.
• Sea level will rise 1-4 feet by 2100
HIGH TIDE ALL TIME? NO MARINE DRIVE? SCUBA DIVING HAJI ALI?
• Arctic likely to become ice-free
NO POLAR BEARS, NO PENGUINS?
28.
29. 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.
A direct consequence from our polluting
actions will be the disappearance of these
vital glaciers.
What will happen to those couple billion who
depend on this previously reliable water
source?
REST OF THE
WORLD,
3.2 billion people will
experience water
scarcity
400 to 600 will be
threatened by hunger
generated by global
warming
Each year an
additional 2 to 7
million people will be
victims of coastal
flooding
LETS TALK ABOUT INDIAN
SUBCONTINENT
30. It’s impacting every notch of our
delicately balanced ecological
system, such as
Animals( we have no right to melt down
their homes, or cut down their forests)
Viruses( Diseases will spread faster than
ever)
Migration habits
279 species of plants and
animals have responded to
global warming, migrating closer
to the poles.
36. Threat to flora and
fauna
Global warming rampage wont spare these
innocent beings also. Lets not forget, its their
home equally.
37.
38. 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. The number of problems that will erupt from such an event are
endless.
56. What Do you picture when
I say Global warming
And
What do you picture when
I saw climate change
57. According to a research done at Yale
university , when people were asked
the same question here is what they
replied
58.
59.
60. So Global warming is a more known phenomenon as 79 % of people know about it
Global warming is perceived as more dangerous and serious
While scientists go with climate change
But causes of both are nearly same
61. Scientist go with climate change because
It is more accurate concept
It is long term
and a constant thing
while media and politicians prefer global warming due to its
emotional appeal
62. Global warming is increase in earth’s temperature since industrial
revolution because of green house emission ,change of land use ,burning
of fossil fuels
Climate change is the long term change to whole planets ‘s climate
including wind pattern ,snowfall ,rainfall ,humidity etc
climate change is a broader concept
it is much more older concept
65. According to a new Antarctica has gained so much ice it is over balanced for the ice that the continent has lost .
From 1992 to 2010 continent gained more ice than it lost in melting
112 billion every year
There is more ice now than from 1981 to 2010
66. The truth behind all these facts
This new research is consistent with global warming data
Increase in ice is infact a outcome of global warming
Ice has only increased in east and part of west Antarctica
But rest of the continent is losing ice
And gaining ice very bad
67. Why there is increase in the ice
So increase in ice is outcome of global warming and its very bad for earth
Melting glaciers are depositing fresh water into the ocean
Fresh water freezes faster
Salt water has a much lower freezing point
Fresh water has dilutes the salt water around the continent therefore it
freezes more
But water underneath the diluted layer is still warming
All these are very dangerous for earth
Oceans have warmed around 0.18 f in the top 700 meters alone but such a
small change is very dangerous for a big planet like earth
Earth is heating faster then predicted
70. Polar vortex was responsible for the freezing temperature in the us and Canada
It is a large pocket of very cold air that sits over polar region
Study claims the recent polar vortex may have been caused by melting polar ice
Warm water melts the ice and this causes warm air to be released
Warm air destabilises polar air sending cold blasts into atmosphere
As global warming continues to heats ocean freezing winters will increase
71. Bangladesh
1. Bangladesh is situated on river delta
2. This makes it very vulnerable to rising sea level
3. Scientists have predicted 13 mt rise in sea level bordering this poor country
4. But impact of global warming can be seen clearly today too
5. Thousands of people have lost their homes ,agricultural land .they are forced to
migrate
6. Floods have been a constant thing in the area but it has increased and has taken
a dangerous avatar causing massive poverty ,diseases
7. Poverty has led to human trafficking
72. THANK YOU
Aryan Maniyar 51
Muzammil Haider 62
Neerali Dodiya 17
Srivardhan 48
Uday Jai Kakkar 38
Zeel Mehta 57
Lets save this planet together
