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GLOBAL WARMING Our Responsibility Toward Climate Change

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Title: GLOBAL WARMING Our Responsibility Toward Climate Change


1
GLOBAL WARMING Our Responsibility Toward Climate
Change
2
Global Warming
  • Not only is it real, it's here, and its
    effects are giving rise to a frighteningly new
    global phenomenon the man-made natural disaster.
  • Barack Obama

3
Outline and Objectives
  • Global Warming
  • The scientific research
  • Effects of global warming
  • Examples of global warming
  • Helping the problem
  • Ways to contribute to solving the problem

4
Global Warming
  • Global warming refers to an average increase in
    the Earth's temperature
  • A warmer Earth may lead to changes in rainfall
    patterns, a rise in sea level, and a wide range
    of impacts on plants, wildlife, and humans.
  • The main cause of global warming is human
    activities.

5
Global Warming
  • The earth is getting warmer. The average
    temperature has risen about 1 degree Fahrenheit
    in the last century and the rate at which the
    temperature is rising is accelerating.

6
The Green House Effect
  • Greenhouse gases
  • prevent some heat from escaping the atmosphere
  • allow incoming radiation to pass through the
    Earths atmosphere.
  • This is a natural process
  • and has kept the Earth's
  • temperature about 60 F warmer than it would
    otherwise be.
  • Current life on Earth could not be sustained
    without the natural greenhouse effect.

7
Lets think about it
  • A green house is used to grow plants and help in
    the winter.
  • Greenhouses trap heat from the sun, and the glass
    panels keep heat from escaping.
  • Thus, the greenhouse can keep plants warm during
    the winter.
  • Greenhouse gases trapped in the Earths
    atmosphere have the same effect.

8
Greenhouse Gases
  • Earths greenhouse gases
  • Water vapor (most abundant)
  • Carbon dioxide
  • Methane
  • Nitrous oxide
  • Ozone
  • CFCs (chlorofluorocarbons) (least abundant)

9
Diagram representing the green house effect
10
Goldilocks Principle
  • It is used to state that a planet must neither be
    too far away nor too close to the sun to support
    life.
  • Venus is too hot,
  • Mars is too cold,
  • but Earth is just right.

11
Chemical Composition of the Atmospheres
12
Climate Change
  • Climate change is the LONG term average of the
    weather patterns in a specific region.
  • Climate can either get warmer or cooler.

13
Peoples Effect on the Climate
  • People began altering the climate during the
    Industrial Revolution in the late 18th and early
    19th century.
  • Now through population growth, fossil fuel
    burning, and deforestation, we are affecting the
    mixture of gases in the atmosphere.

14
Carbon Dioxide
  • Carbon Dioxide is one of the most abundant
    greenhouse gases in the atmosphere.
  • The main source of CO2 is the burning of fossil
    fuels

Deforestation in Brazil has earned it a spot as
one of the leading carbon dioxide emitting
countries.
15
Methane Gas
  • Trash in landfills, animals, and deforestation
    all produce methane gas.
  • 60 of global methane emissions are related to
    human-related activities

16
Nitrous Oxide
  • Sources include
  • Nitric acid in fertilizers
  • Animal manure management
  • Sewage treatment
  • Adipic acid for the production of nylon

17
Ozone
  • Fuel combustion is the main source of Ozone

18
CFCs
  • CFCs were once widely used in aerosols and
    refrigerators

The use of CFCs as a coolant has been
discontinued, but the effects of the damage done
will persist for thousands of years
19
(No Transcript)
20
Effects of Global Warming
Argentina's Upsala Glacier was once the biggest
in South America, but it is now disappearing at a
rate of 200 meters per year.
21
Effects of Global Warming
The common lawn weed deadnettle, photographed at
the National Arboretum, is blooming an average of
39 days earlier than in 1970.
22
Effects of Global Warming
A study showed the egg laying date of North
American tree swallows advanced by up to nine
days during the period from 1959 to 1991. Tree
swallows across North America are breeding
earlier, the most likely cause is a long term
increase in spring temperature. 
23
Effects of Global Warming
  • Rising sea levels
  • An increase in extreme weather occurrences
    (hurricanes, tornadoes, flash floods, tsunamis
    etc.)
  • An increase in the occurrence of fires
  • An increase in droughts
  • Melting of the polar ice caps
  • Greater variation in the fluctuation of
    temperature
  • The list goes on and on

24
Effects of Global Warming
  • Environmental changes can lead to
  • Appearance of new diseases
  • Old diseases in new places
  • Diseases carried by insects (or other vectors)
    are especially likely to be affected
  • Some affected diseases are
  • Malaria
  • Plague
  • Dengue
  • Flu

25
Help Prevent Climate Change
  • Be energy efficient.
  • Use fluorescent light bulbs.
  • Drive less walk, carpool
  • Recycle and buy recycled products
  • Turn off electronic devices when not in use
  • Plant a tree

26
International Responsibility
  • Climate change is a global problem.
  • The United Nations is taking an increasing role
    in its involvement
  • in climate change.
  • The United Nations Environment Program provides
    governments
  • with tools to promote climate change awareness.

27
National Responsibility
  • Congress has passed
  • Clean Air Act in 1963
  • Air Quality Act in 1967
  • Clean Air Act Extension of 1970
  • Clean Air Act Amendments in 1977 and 1990.
  • Numerous state and local governments have enacted
    similar legislation, either implementing federal
    programs or filling in locally important gaps in
    federal programs.

President Bush signs the Clean Air Act Amendments
- Nov. 15, 1990 (Source White House, photo by
Carol T. Powers)
28
References
  • http//www.epa.gov/climatechange/kids/cc.html
  • http//www.darlington.gov.uk/NR/rdonlyres/2091F156
    -0B6A-456B-B5FA-24579F372F36/0/greenhouseeffect.jp
    g
  • http//news.bbc.co.uk/2/shared/spl/hi/picture_gall
    ery/05/sci_nat_how_the_world_is_changing/html/1.st
    m
  • http//www.koshland-science-museum.org/exhibitgcc/
    causes01.jsp
  • http//www.edugreen.teri.res.in/explore/climate/ca
    uses.htm
  • http//www.unfoundation.org/SEG/
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