W hat is global warming?
The changes in the surface air temperature, referred to as the global temperature, brought about by the enhanced greenhouse effect, which is induced by emissions of greenhouse gases into the air.
How Global Warming Works
Carbon Dioxide (CO2)
Fossil fuels (coal, oil, natural gas)
Example of the
Greenhouse Effect
The Sun’s energy passes through the car’s windshield.
This energy (heat) is trapped inside the car and cannot pass back through the windshield, causing the inside of the car to warm up. Difference
GLOBAL WARMING is the increase of the
Earth’s average surface temperature due to a build-up of greenhouse gases in the atmosphere.
CLIMATE CHANGE is a broader term that refers to longterm changes in climate, including average temperature and precipitation. Effects of Global Warming
Rising Sea Level
Increased Temperature
Habitat Damage and
Species Affected
Changes in Water Supply
W hat’s the proof that global warming is taking place?
Lets see
Portage Glacier
› Alaska
1914
2004
Colorado River
› Arizona
June 2002
Dec 2003
W hy is global warming happening?
Burning of Fossil Fuels
Pollution from coal, natural gas, and oil
W hen did global warming start?
When did global warming start?
Global Warming graph
How is global warming measured? Ice Core Data
CO2 Measurements Before 1958 - Antarctica
CO2 Atmospheric
Measurements
CO2 Measurements Since 1958 – Mauna Loa,
Hawaii
1000 Years of CO2 and
Global Warming
CO2 Concentrations
Parts Per Million
Degree Celsius Increase
Temperature
(Northern Hemisphere)
Year
Year
Global
Warming:
Shifting Gears
U.S. emission
Billions of Metric Tons Carbon
Gigaton Carbon
Our Goal
2007
Reductions
in CO2
Per Year
W hat’s being done now to reduce our emissions?
Fuel-Efficiency
Solar Power
Wind Power
What can you do to help solve the problem?
Simple Things To Do
Turn off your computer or the TV when you’re not using it.
Take shorter showers. Heating water uses energy.
Keep rooms cool by closing the blinds, shades, or curtains. Turn off the lights when you leave a room.
Use compact fluorescent bulbs.
Be Bulb Smart—Use CFLs
Incandescent
What’s the difference? Compact
Fluorescent
500 lbs. of coal
•1,430 lbs. CO2 pollution avoided
•$30 saved
Simple Things To Do
Dress lightly when it’s hot instead of turning up the air conditioning. Or use a fan.
Dress warmly when it’s cold instead of turning up the heat.
Offer to help your parents keep the air filters on
your AC and furnace clean.
Walk short distances instead of asking for a
ride in the car.
Plant a tree.
Recycle.
Thank you
›Thank you
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