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Download The current causes of climate change: the human causes
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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
