Articles | Volume 13, issue 4
https://doi.org/10.5194/amt-13-1671-2020
https://doi.org/10.5194/amt-13-1671-2020
Research article
 | 
06 Apr 2020
Research article |  | 06 Apr 2020

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

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Cited articles

Acevedo, O. C., Moraes, O. L. L., Da Silva, R., Fitzjarrald, D. R., Sakai, R. K., Staebler, R. M., and Czikowsky, M. J.: Inferring Nocturnal Surface Fluxes from Vertical Profiles of Scalars in an Amazon Pasture, Global Change Biology, 10, 886–894, https://doi.org/10.1111/j.1529-8817.2003.00755.x, 2004. a, b, c
Allan, D. W.: Should the Classical Variance Be Used as a Basic Measure in Standards Metrology?, IEEE T. Instrum. Meas., IM-36, 646–654, https://doi.org/10.1109/TIM.1987.6312761, 1987. a
Andersen, T., Scheeren, B., Peters, W., and Chen, H.: A UAV-based active AirCore system for measurements of greenhouse gases, Atmos. Meas. Tech., 11, 2683–2699, https://doi.org/10.5194/amt-11-2683-2018, 2018. a
Aubinet, M.: Eddy Covariance CO2 Flux Measurements in Nocturnal Conditions: An Analysis of the Problem, Ecol. Appl., 18, 1368–1378, 2008. a
Aubinet, M., Feigenwinter, C., Heinesch, B., Bernhofer, C., Canepa, E., Lindroth, A., Montagnani, L., Rebmann, C., Sedlak, P., and Van Gorsel, E.: Direct Advection Measurements Do Not Help to Solve the Night-Time CO2 Closure Problem: Evidence from Three Different Forests, Agr. Forest Meteorol., 150, 655–664, https://doi.org/10.1016/j.agrformet.2010.01.016, 2010. a
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The nocturnal boundary layer (NBL) budget method enables the quantification of gas fluxes between ecosystems and the atmosphere under nocturnal stable stratification, a condition under which standard approaches struggle. However, up to now the application of the NBL method has been limited by difficulties in obtaining the required measurements. We show how an unmanned aircraft system (UAS) equipped with a carbon dioxide analyser can make this method more accessible.