Mauna Loa CO2 Collection Data

In this activity, students use datasets from both the Northern and Southern hemispheres to observe seasonal and hemispheric differences in changes to atmospheric C02 release and uptake over time.

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Connecticut Energy Education

Notes From Our Reviewers

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Teaching Tips

Teaching Tips

Read the student worksheet first, which has a more constrained dataset for graphing. Educators' guide contains a more extensive dataset that the educator can give to more advanced students.

Younger students may require additional scaffolding for graphing and analyzing the graphs.

We suggest that educator look for the most up-to-date Keeling Curve. Suggested link:

Educator should be prepared to explain to students that the volcanic gases are not affecting the measurements, which is an often-cited argument that climate change deniers use to discredit these CO2 measurements.

Amount of material may be overwhelming for educators.

The multi-decadal trend is calculated, but none of the discussion questions prompt students to discuss the data. A discussion should be initiated by the educator.