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Group Members

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What is Global Warming? Green House Effect. ... effect on climate. Effects of other gases Methane is ... that reducing waste is good for the environment. – PowerPoint PPT presentation

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Title: Group Members


1
Group Members
2
INDEX
  • Introduction.
  • What is Global Warming?
  • Green House Effect.
  • Effects of CO2.
  • Effects of other Gases.
  • Impacts.
  • Findings.
  • What we can do to stop Global Warming?
  • Solutions.

3
Group Members
  • KETAKI BHALERAO .....1
    3
  • MINI MENON52
  • ANAND BHARADIA.39
  • ABHIJEET...11
  • HEMANGI AGNIHOTRI....6
    5
  • GOVIND NIKAM70
  • SANTU MONDAL..08

4
What is Global Warming?
  • Global warming refers to an average increase in
    the Earth's temperature, which in turn causes
    changes in climate. When scientists talk about
    the issue of climate change, their concern is
    about global warming caused by human activities.
    , in particular the burning of fossil fuels and
    the resulting buildup of greenhouse gases in the
    atmosphere, have influenced this warming trend.

5
Natural Green House Effect
  • Sunlight (shortwave radiation) passes easily
    through the earth's atmosphere. Once it strikes
    and warms the earth's surface, lnfrared radiation
    is given off and goes back into the atmosphere.
    While some of this Infrared radiation or heat
    escapes into space, most of it is absorbed or
    held by carbon dioxide and other green gases like
    water vapor, carbon dioxide, methane, nitrous
    oxide, and ozone that exist in small quantities
    in the atmosphere.
  • These gases form a blanket' that keeps the
    earth an average of 33 degrees centigrade warmer.
  • Without these gases the whole planet would be an
    icy wasteland with an average temperature of 16
    degrees centigrade below freezing

6
The Greenhouse Effect
7
Increase in carbon dioxide cause the earth to get
warmer
  • CO2 contributes about 50 to the greenhouse
    effect
  • Carbon dioxide is produced from burning wood,
    coal, gas, etc.
  • The increase in carbon dioxide in the
    atmosphere is increasing the heat
    being absorbed from the earth.
  • This trapped heat increases the evaporation of
    water from the oceans into the air to cause a
    greater increase in warming of the atmosphere.
    CO2 has a forcing effect on climate.

8
Effects of other gases
  • Methane is emitted during the production and
    transport of coal, natural gas, and oil.
    decomposition of organic wastes in municipal
    solid waste landfills and the raising of
    livestock.
  • Nitrous oxide is emitted during agricultural
    and industrial activities, as well as during
    combustion of solid waste and fossil fuels.
  • Very powerful greenhouse gases that are not
    naturally occurring include hydrofluorocarbons
    (HFCs), perfluorocarbons (PFCs), and sulfur
    hexafluoride (SF6), which are generated in a
    variety of industrial processes.

9
The Earth's rising temperatures are chiefly the
result of the burning of fossil fuels (which puts
carbon dioxide a heat-trapping or greenhouse gas
in the atmosphere). Scientists, however, do not
currently agree that human-caused global warming
is a significant problem
10
Impacts of Global Warming?
  • The climate system varies through natural,
    internal processes and in response to variations
    in external forcing factors including solar
    activity, volcanic emissions, variations in the
    earth's orbit (orbital forcing) and greenhouse
    gases.
  • The detailed causes of the recent warming
    remain an active field of research, but the
    scientific consensus identifies increased levels
    of greenhouse gases due to human activity as the
    main influence. This attribution is clearest for
    the most recent 50 years, for which the most
    detailed data are available.
  • Contrasting with the scientific consensus,
    other hypotheses have been proposed to explain
    most of the observed increase in global
    temperatures. One such hypothesis is that the
    warming is caused by natural fluctuations in the
    climate or that warming is mainly a result of
    variations in solar radiation.
  • None of the effects of forcing are
    instantaneous. Due to the thermal inertia of the
    Earth's oceans and slow responses of other
    indirect effects, the Earth's current climate is
    not in equilibrium with the forcing imposed.
    Climate commitment studies indicate that even if
    greenhouse gases were stabilized at present day
    levels, a further warming of about 0.5 C
    (0.9 F) would still occur

11

Millions at Risk of Hunger and Water Stress in
Asia Unless Global Greenhouse Emissions Cut
12
Climate Change Hits Hard on Latin America and the
Caribbean.
13
Polar bear "walking on thin ice" across the
Arctic in order to reach marine seal-hunting
grounds.
14
Algae fills a pool fed by Canada Glacier in the
Dry Valleys region of Antarctica with some
experts forecasting the melting of half the
Arctics summer sea ice by the centurys end.
15
The Arctic is heating up at least twice as fast
as the rest of the planet, according to the final
report of the Arctic Climate Impact Assessment
16
The Esperanza surrounded by small ice floats in
the Ross Sea, Southern Ocean Whale Sanctuary
17
Findings of IPCC
  • The United Nations formed a group of scientists
    called the INTERNATIONAL PANEL ON CLIMATE
    CHANGE OR IPCC.
  • The IPCC was established in 1988 to study
    climate change information.
  • The group doesnt do independent research but
    instead reviews scientific literature from around
    the world.
  • The groups goal is to produce a balanced
    reporting of existing viewpoints on the causes
    of global warming.
  • The IPCC meets every few years to review the
    latest scientific findings and write a report
    summarizing all that is known about global
    warming.

18
Some of the findings are as under
  • The 1990s was the warmest decade, and 1998 the
    warmest year on global record.
  • The burning of coal, oil gas has increased
    the amount of CO2 in the atmosphere by 30 over
    natural levels
  • The Earth is warming faster than at any time in
    the past 10,000 years

19
What we can do, to stop GLOBAL WARMING?
  • Use the washing machine or dishwasher only when
    they are full
  • Take a shower instead of a bath
  • Use less hot water
  • Be sure youre recycling at home
  • Reuse your shopping bag
  • Plant a tree
  • Buy locally grown and produced foods
  • Buy fresh foods instead of frozen
  • Seek out and support local farmers markets
  • Buy organic foods as much as possible
  • Eat less meat

20
What we can do, to stop GLOBAL WARMING?
  • Reduce the number of miles you drive by walking,
    biking, carpooling or taking mass transit
    wherever possible
  • Keep your car tuned up
  • Drive carefully and do not waste fuel
  • When it is time for a new car, choose a more fuel
    efficient vehicle
  • Try car sharing
  • Try telecommuting from home
  • Fly less
  • Encourage your school or business to reduce
    emissions
  • Join the virtual march
  • Encourage the switch to renewable energy
  • Protect and conserve forest worldwide
  • Consider the impact of your investments
  • Make your city cool
  • Tell Congress to act
  • Make sure your voice is heard!

21
Solution for Global Warming?
  • We have the technology and ingenuity to reduce
    the threat of global warming today. Solutions are
    already available that will stimulate various
    economy for different countries by creating jobs,
    saving consumers money, and protecting our
    national security. By investing in renewable
    energy and energy efficiency, and increasing the
    efficiency of the cars we drive, we can take
    essential steps toward reducing our dependence on
    oil and other fossil fuels that cause global
    warming.
  • Using energy more efficiently and moving to
    renewable energy (wind, solar, geothermal, and
    bio energy) would significantly reduce our
    emissions of heat-trapping gases. The United
    States currently produces 70 percent of its
    electricity from fossil fuels such as coal,
    natural gas, and oil, but only two percent from
    renewable sources. Since the burning of fossil
    fuels releases large amounts of carbon
    dioxidethe leading cause of global warmingbut
    renewable energy does not, increasing the share
    of our electricity generated from renewable
    resources is one of the most effective ways to
    reduce global warming emissions.
  • By putting energy efficiency, renewable energy,
    and vehicle technology solutions in place at the
    federal level, we can reduce our contribution to
    global warming while creating a stronger,
    healthier, and more secure WORLD.

22
Individual
  • What difference can I make ? When faced with
    this question, individuals should recognize that
    collectively they can make a difference
  • Recycling newspapers, plastics, glass and metal
    will help a lot.

23
Industry Actions
  • Industry can take a leading role in focusing
    serious attention on global warming
  • Everyone knows that reducing waste is good for
    the environment. What most people dont know is
    that solid waste reduction and recycling help
    address global climate change. How? By decreasing
    the amount of heat-trapping greenhouse gases that
    are linked to everyday trash.

24
International
  • Climate change is a global problem requiring
    action from the entire international community.
    Countries from around the world are working
    together to share technologies, experience,
    resources and talent to lower net greenhouse gas
    emissions and reduce the threat of global climate
    change.
  • One important strategy for reducing global
    greenhouse gas emissions is developing and
    sharing climate-friendly technologies.

25
At last, we have to diffuse the bomb of
GLOBAL WARMING
26
Spread the word! Tell other people things that
they can do to help prevent global
warming. - Remember -- Every person makes a
difference!
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