Low-complexity methods to mitigate the impact of environmental variables on low-cost UAS-based atmospheric carbon dioxide measurements
Date
2022-10-06Author
Hupsel de Azevedo, Gustavo Britto
Doyle, Bill
Fiebrich, Christopher A.
Schvartzman, David
Metadata
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This article assesses the individual and joint impact of pressure, temperature, and relative humidity on the accuracy of atmospheric CO2 measurements collected by unmanned aerial systems (UASs) using low-cost commercial non-dispersive infrared (NDIR) sensors. We build upon previous experimental results in the literature and present a new dataset with increased gradients for each environmental variable to match the abrupt changes found in UAS-based atmospheric vertical profiles. As a key contribution, we present a low-complexity correction procedure to mitigate the impact of these variables and reduce errors in this type of atmospheric CO2 measurement. Our findings support the use of low-cost NDIR sensors for UAS-based atmospheric CO2 measurements as a complementary in situ tool for many scientific applications.
Citation
Britto Hupsel de Azevedo, G., Doyle, B., Fiebrich, C. A., and Schvartzman, D.: Low-complexity methods to mitigate the impact of environmental variables on low-cost UAS-based atmospheric carbon dioxide measurements, Atmos. Meas. Tech., 15, 5599–5618, https://doi.org/10.5194/amt-15-5599-2022, 2022.
Sponsorship
The authors would like to recognize the efforts of David L. Grimsley, the manager of the Oklahoma Mesonet Calibration Laboratory, for his technical support during the Mesonet chamber experiments. The authors would like thank Jamey D. Jacob from the Unmanned Systems Research Institute at the Oklahoma State University for providing the LI-COR LI-820 reference gas analyzer used in the Mesonet chamber experiments. The authors also thank RMSA for the thorough grammatical revisions. This study was supported in part by the Vice President for Research and Partnerships (VPRP) of the University of Oklahoma (OU). Publication was supported by the University of Oklahoma Libraries.
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