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What Does This Number Mean?

In Measurement Notes by Rob Monroe

Repost of April 2013 entry The Mauna Loa carbon dioxide (CO2) record, also known as the “Keeling Curve,” is the world’s longest unbroken record of atmospheric carbon dioxide concentrations.  

A note on recent readings

In Measurement Notes by Rob Monroe

In response to a recent reader comment about wide fluctuations in CO2 readings at Mauna Loa, Ralph Keeling and Stephen Walker of the Scripps CO2 Group gave the following answer: It’s fairly normal, especially in the summer time, to see strong afternoon “dips” in the CO2 concentration.  The dips are generally caused by upslope winds that that are depleted in …

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How are CO2 Data Processed?

In Measurement Notes by Rob Monroe

Scientists make CO2 measurements in remote locations to obtain air that is representative of a large volume of Earth’s atmosphere and relatively free from local influences that could skew readings.