What is global warming?What is global warming?

How Global Warming Works?

Fossil fuels (coal, oil, natural gas)

Carbon Dioxide (CO2)

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.

Example of the Greenhouse Effect

What’s the difference between “global warming” and

“climate change”?

What’s the difference between “global warming” and

“climate change”?

DifferenceDifferenceGLOBAL 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 long-term changes in climate, including average temperature and precipitation.

Effects of Global WarmingEffects of Global WarmingIncreased Temperature

Habitat Damage and

Species Affected

Changes in Water Supply

Rising Sea Level

What’s the proof that global warming is taking place?

What’s the proof that global warming is taking place?

Portage GlacierPortage Glacier

1914 2010

• Alaska

Colorado RiverColorado River• Arizona

June 2002 Dec 2010

Why is global warming happening?

Why is global warming happening?

Burning of Fossil FuelsBurning of Fossil Fuels

Pollution from coal, natural gas, and oilPollution from coal, natural gas, and oil

Volcanoes Put Out less CO2Than Fossil Fuel Burning

Volcanoes Put Out less CO2Than Fossil Fuel Burning

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Fossil FuelVolcanoes

When did global warming start?When did global warming start?

Global Atmospheric Concentration of CO2Global Atmospheric Concentration of CO2

How is global warming measured?

How is global warming measured?

Ice Core DataIce Core Data

COCO22 Measurements Before 1958 - Antarctica Measurements Before 1958 - Antarctica

CO2 Atmospheric Measurements

CO2 Atmospheric Measurements

CO2 Measurements Since 1958 – Mauna Loa, HawaiiCO2 Measurements Since 1958 – Mauna Loa, Hawaii

Temperature CO2 Concentrations

1000 Years of CO2 and Global Warming

1000 Years of CO2 and Global Warming

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An increase in global temperature will cause sea levels to rise and will change the

amount and pattern of precipitation. Warming is expected to be

strongest in the Arctic and would be associated with continuing

retreat of glaciers.Other likely effects of the warming include more frequent occurrence of

extreme weather events including heatwaves, droughts and heavy rainfall

events, species extinctions due to shifting temperature regimes, and changes in

agricultural yields.

Countries into the agreementCountries into the agreement

Green indicates countries that have ratified the treaty; Dark green are Annex I and II countries that have ratified the treaty; Grey is not yet decided; Brown is no intention of

ratifying

Mitigation of Global WarmingMitigation of Global Warming

• Conservation Reduce energy needs

Recycling

• Alternate energy sources Nuclear

Wind

Geothermal

Hydroelectric

Solar

Global Warming Has Stopped?Global Warming Has Stopped?

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1975 1980 1985 1990 1995 2000 2005Year

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Global Warming:Global Warming:

Shifting GearsShifting Gears

2010Goal: Reductions in CO2 Per Year

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2010Reductions

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Produce electricity efficientlyUse electricity efficientlyVehicle efficiencySolar and Wind PowerBiofuelsCarbon capture and storage

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Kyoto protocol goal

We can stop global warming!We can stop global warming!

What’s being done now to reduce our emissions?

What’s being done now to reduce our emissions?

Solar Power Wind Power Fuel-Efficiency

What can you do to help What can you do to help solve the problem?solve the problem?

Simple Things To DoSimple 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.

Simple Things To DoSimple 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.

Keep the air filters on your Air Conditioner and

furnace clean.

Walk short distances instead of asking for a ride in the car.

Plant a tree. Recycle.