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Understanding Greenhouse Gas Absorption and Global Warming Potential

Learn about how different greenhouse gases vary in their ability to trap IR radiation, with methane being 26 times more effective than CO2. Understand how the effectiveness is influenced by the gases' lifetimes in the atmosphere. Discover the concept of Global Warming Potential (GWP) and its importance in measuring the impact of greenhouse gases.

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Understanding Greenhouse Gas Absorption and Global Warming Potential

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Presentation Transcript

  1. IR absorption • Greenhouse gases vary in their ability to trap IR radiation, • One molecule of Methane is 26 times more effective at IR absorption than one molecule of CO2.

  2. Lifetime • Effectiveness also depends on the lifetime in the atmosphere. • Methane remains in the atmosphere for about a decade, CO2 has an effective lifetime of ~1000 years.

  3. Global warming potential (GWP). The effectiveness of a greenhouse gas relative to CO2 is its global warming potential (GWP).

  4. GWP on a per kilogram basis

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