Articles | Volume 11, issue 3
Research article
29 Mar 2018
Research article |  | 29 Mar 2018

COCAP: a carbon dioxide analyser for small unmanned aircraft systems

Martin Kunz, Jost V. Lavric, Christoph Gerbig, Pieter Tans, Don Neff, Christine Hummelgård, Hans Martin, Henrik Rödjegård, Burkhard Wrenger, and Martin Heimann

Related authors

Surface flux estimates derived from UAS-based mole fraction measurements by means of a nocturnal boundary layer budget approach
Martin Kunz, Jost V. Lavric, Rainer Gasche, Christoph Gerbig, Richard H. Grant, Frank-Thomas Koch, Marcus Schumacher, Benjamin Wolf, and Matthias Zeeman
Atmos. Meas. Tech., 13, 1671–1692,,, 2020
Short summary

Related subject area

Subject: Gases | Technique: In Situ Measurement | Topic: Instruments and Platforms
Validation and field application of a low-cost device to measure CO2 and evapotranspiration (ET) fluxes
Reena Macagga, Michael Asante, Geoffroy Sossa, Danica Antonijević, Maren Dubbert, and Mathias Hoffmann
Atmos. Meas. Tech., 17, 1317–1332,,, 2024
Short summary
Identifying and correcting interferences to PTR-ToF-MS measurements of isoprene and other urban volatile organic compounds
Matthew M. Coggon, Chelsea E. Stockwell, Megan S. Claflin, Eva Y. Pfannerstill, Lu Xu, Jessica B. Gilman, Julia Marcantonio, Cong Cao, Kelvin Bates, Georgios I. Gkatzelis, Aaron Lamplugh, Erin F. Katz, Caleb Arata, Eric C. Apel, Rebecca S. Hornbrook, Felix Piel, Francesca Majluf, Donald R. Blake, Armin Wisthaler, Manjula Canagaratna, Brian M. Lerner, Allen H. Goldstein, John E. Mak, and Carsten Warneke
Atmos. Meas. Tech., 17, 801–825,,, 2024
Short summary
Development of a continuous UAV-mounted air sampler and application to the quantification of CO2 and CH4 emissions from a major coking plant
Tianran Han, Conghui Xie, Yayong Liu, Yanrong Yang, Yuheng Zhang, Yufei Huang, Xiangyu Gao, Xiaohua Zhang, Fangmin Bao, and Shao-Meng Li
Atmos. Meas. Tech., 17, 677–691,,, 2024
Short summary
Uptake behavior of polycyclic aromatic compounds during field calibrations of the XAD-based passive air sampler across seasons and locations
Yuening Li, Faqiang Zhan, Yushan Su, Ying Duan Lei, Chubashini Shunthirasingham, Zilin Zhou, Jonathan P. D. Abbatt, Hayley Hung, and Frank Wania
Atmos. Meas. Tech., 17, 715–729,,, 2024
Short summary
Effect of land–sea air mass transport on spatiotemporal distributions of atmospheric CO2 and CH4 mixing ratios over the southern Yellow Sea
Jiaxin Li, Kunpeng Zang, Yi Lin, Yuanyuan Chen, Shuo Liu, Shanshan Qiu, Kai Jiang, Xuemei Qing, Haoyu Xiong, Haixiang Hong, Shuangxi Fang, Honghui Xu, and Yujun Jiang
Atmos. Meas. Tech., 16, 4757–4768,,, 2023
Short summary

Cited articles

Allan, D. W.: Should the Classical Variance Be Used as a Basic Measure in Standards Metrology?, IEEE T. Instrum. Meas., IM-36, 646–654,, 1987.
Arzoumanian, E., Bastos, A., Gaynullin, B., Martin, H., Hjern, L., Laurent, O., and Vogel, F. R.: An Evaluation of Commercial NDIR Sensors for a Potential Use in Future Urban GHG Monitoring Systems, abstract B33H-0705 presented at 2016 Fall Meeting, AGU, San Francisco, Calif., 12–16 December 2016, available at: (last access: March 2017), 2016.
Berman, E. S. F., Fladeland, M., Liem, J., Kolyer, R., and Gupta, M.: Greenhouse Gas Analyzer for Measurements of Carbon Dioxide, Methane, and Water Vapor Aboard an Unmanned Aerial Vehicle, Sensor. Actuat. B-Chem., 169, 128–135,, 2012.
Brady, J. M., Stokes, M. D., Bonnardel, J., and Bertram, T. H.: Characterization of a Quadrotor Unmanned Aircraft System for Aerosol-Particle-Concentration Measurements, Environ. Sci. Technol., 50, 1376–1383,, 2016.
Ciais, P., Rayner, P., Chevallier, F., Bousquet, P., Logan, M., Peylin, P., and Ramonet, M.: Atmospheric Inversions for Estimating CO2 Fluxes: Methods and Perspectives, Clim. Change, 103, 69–92,, 2010.
Short summary
Unmanned aircraft could provide a cost-effective way to close gaps in the observation of the carbon cycle, provided that small yet accurate analysers are available. We have developed a COmpact Carbon dioxide analyser for Airborne Platforms (COCAP). During validation of its CO2 measurements in simulated and real flights we found a measurement error of 1.2 μmol mol−1 or better with no indication of bias. COCAP is a self-contained package that has proven well suited for operation on board UASs.