Articles | Volume 12, issue 5
Atmos. Meas. Tech., 12, 2665–2677, 2019
https://doi.org/10.5194/amt-12-2665-2019

Special issue: The 10th International Carbon Dioxide Conference (ICDC10)...

Atmos. Meas. Tech., 12, 2665–2677, 2019
https://doi.org/10.5194/amt-12-2665-2019

Research article 09 May 2019

Research article | 09 May 2019

Characterization of a commercial lower-cost medium-precision non-dispersive infrared sensor for atmospheric CO2 monitoring in urban areas

Emmanuel Arzoumanian et al.

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Latest update: 13 May 2021
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Short summary
We tested commercial lower-cost CO2 sensors in laboratory and field studies to see if they can measure atmospheric CO2 mole fractions with less than 1 ppm bias (with monthly calibration), to allow continuous urban CO2 monitoring. We find that the sensors' CO2 readings are influenced by temperature, atmospheric pressure and water vapour content, but this can be corrected for by adding sensors (T, p, RH) and carefully calibrating each sensor against a high-precision instrument.