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Transcript
The current causes of climate
change: the human causes
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 long-term
changes in climate,
including average
temperature and
precipitation.
How Global Warming Works
Carbon Dioxide (CO2)
Fossil fuels (coal, oil, natural gas)
How is global warming
measured?
Ice Core Data
CO2 Measurements Before 1958 - Antarctica
CO2 Atmospheric
Measurements
CO2 Measurements Since 1958 – Mauna Loa, Hawaii
The main greenhouse gases
Explanation of the causes of global warming
1000 Years of CO2 and
Global Warming
Temperature
(Northern Hemisphere)
Year
Year
2000
1800
1600
1400
1200
1000
2000
1800
1600
1400
1200
1000
Parts Per Million
Degree Celsius Increase
CO2 Concentrations
Burning of Fossil Fuels
Pollution from coal,
natural gas, and oil
Global Atmospheric Concentration of CO2
Methane
• 24 times more potent than carbon dioxide
• Rising incomes and increase population have
led to an increased rearing of livestockaccount for about 20% of emissions
• Also comes from marshland, rice landfills
(rotting vegetable matter), burning vegetation