Heat-Trapping Gases

This video discusses carbon dioxide concentrations in the atmosphere that have increased due to the burning of fossil fuels in electricity generation, transportation, and industrial processes. Video includes history of Keeling and his research, as well as the seasonal fluctuations in CO2.

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Climate Communications

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Teaching Tips

Teaching Tips

Educator may need to explain what the blue and black lines on the graph represent (seasonal CO2 levels vs. average CO2 levels, respectively).

Video could help to introduce and demonstrate the value of long-term scientific measurements. This could also launch a lesson on natural fluctuation or expand into a lesson of human influence on natural events. Could be used also with lessons on seasons or the carbon cycle.

Other long-term data sets could also be introduced. Local or small scale long-term records could include ice records on lakes and ponds, temperature records, or phenological records, all contributing to an understanding of averages and changes over time.