Introduction of Global WarmingAnnie & Evelyn

• Movie clip

• What is global warming?

• Characteristics of three major greenhouse gases

• Abnormal temperature sine 1980

Outline

What is Global Warming?

What is Global Warming?

What is Global Warming?

• Global warming refers to an average increase in the Earth's temperature, which in turn causes changes in climate. This temperature rise is caused by the Greenhouse effect -- a necessary phenomenon that keeps all Earth's heat from escaping to the outer atmosphere.

What is Global Warming?

• Global warming refers to an average increase in the Earth's temperature, which in turn causes changes in climate. This temperature rise is caused by the Greenhouse effect -- a necessary phenomenon that keeps all Earth's heat from escaping to the outer atmosphere.

• Without the natural greenhouse effect it is certain that life on Earth would be difficult to sustain. However, too many greenhouse gases in Earth's atmosphere would lead to changes in rainfall patterns, a rise in sea level, and a wide range of negative impacts on plants, wildlife, and humans.

Characteristics of three major greenhouse gases

Characteristics of three major greenhouse gases

Greenhouse gas

Sources

Carbon Dioxide

(CO2)

1) Burning of fossil fuel

2) Land-use change (deforestation)

Methane

(CH4)

1) Biomass burning

2) Enteric fermentation

3) Rice paddies

Nitrous Oxide

(N2O)

1) Biomass burning

2) Fossil-fuel combustion

3) Fertilizers

Abnormal Temperature Rise since 1980

http://www.seed.slb.com/en/scictr/watch/climate_change/change.htm

Start saving our earth from today!

http://www.carbonfootprint.com/minimisecfp.html

http://actonco2.direct.gov.uk/index.html

“ Each of us is a cause of global warming, but each of us can become part of the solution,” said Al Gore, 2007

Nobel Peace Prize winner.