Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 17, issue 18
Articles | Volume 17, issue 18
https://doi.org/10.5194/amt-17-5581-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-17-5581-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 18
Research article
 | 
25 Sep 2024
Research article |  | 25 Sep 2024

Field assessments on the impact of CO2 concentration fluctuations along with complex-terrain flows on the estimation of the net ecosystem exchange of temperate forests

Dexiong Teng, Jiaojun Zhu, Tian Gao, Fengyuan Yu, Yuan Zhu, Xinhua Zhou, and Bai Yang

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Cited articles

Aubinet, M., Grelle, A., Ibrom, A., Rannik, Ü., Moncrieff, J., Foken, T., Kowalski, A. S., Martin, P. H., Berbigier, P., Bernhofer, C., Clement, R., Elbers, J., Granier, A., Grünwald, T., Morgenstern, K., Pilegaard, K., Rebmann, C., Snijders, W., Valentini, R., and Vesala, T.: Estimates of the Annual Net Carbon and Water Exchange of Forests: The EUROFLUX Methodology, Adv. Ecol. Res., 30, 113–175, https://doi.org/10.1016/s0065-2504(08)60018-5, 2000. 
Aubinet, M., Heinesch, B., and Yernaux, M.: Horizontal and Vertical CO2 Advection In A Sloping Forest, Bound.-Lay. Meteorol., 108, 397–417, https://doi.org/10.1023/a:1024168428135, 2003. 
Aubinet, M., Vesala, T., and Papale, D.: Eddy Covariance: A Practical Guide to Measurement and Data Analysis, Springer Atmospheric Sciences, Springer, Dordrecht, XXII, 438 pp., https://doi.org/10.1007/978-94-007-2351-1, 2012. 
Belušić, D. and Mahrt, L.: Is geometry more universal than physics in atmospheric boundary layer flow?, J. Geophys. Res.-Atmos., 117, D09115, https://doi.org/10.1029/2011jd016987, 2012.​​​​​​​ 
Bjorkegren, A. B., Grimmond, C. S. B., Kotthaus, S., and Malamud, B. D.: CO2 emission estimation in the urban environment: Measurement of the CO2 storage term, Atmos. Environ., 122, 775–790, https://doi.org/10.1016/j.atmosenv.2015.10.012, 2015. 
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Dense canopy weakens turbulent mixing, leading to significant CO2 storage (Fs), a key part of net ecosystem exchange (NEE) measured using eddy covariance. Gust-biased Fs measurements complicate NEE estimation in forests with complex terrain. We analyzed gust-induced CO2 fluctuations and their impact on Fs. Fs and its contribution to NEE can be explained by terrain complexity and turbulent mixing. This work highlights how gusts over complex terrain affect the Fs and NEE measurements.
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