Intercomparison of methods to estimate gross primary production based on CO<sub>2</sub> and COS flux measurements

Kohonen, Kukka-Maaria; Dewar, Roderick; Tramontana, Gianluca; Mauranen, Aleksanteri; Kolari, Pasi; Kooijmans, Linda M. J.; Papale, Dario; Vesala, Timo; Mammarella, Ivan

doi:https://doi.org/10.5194/bg-19-4067-2022

Articles | Volume 19, issue 17

https://doi.org/10.5194/bg-19-4067-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-19-4067-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 17

Research article

|

01 Sep 2022

Research article |

| 01 Sep 2022

Intercomparison of methods to estimate gross primary production based on CO₂ and COS flux measurements

Kukka-Maaria Kohonen, Roderick Dewar, Gianluca Tramontana, Aleksanteri Mauranen, Pasi Kolari, Linda M. J. Kooijmans, Dario Papale, Timo Vesala, and Ivan Mammarella

Data sets

Dataset for "Intercomparison of methods to estimate gross primary production based on CO2 and COS flux measurements" Kukka-Maaria Kohonen, Gianluca Tramontana, and Pasi Kolari https://doi.org/10.5281/zenodo.6940750

SMEAR II Hyytiälä forest meteorology, greenhouse gases, air quality and soil (Version 1) J. Aalto, P. Aalto, P. Keronen, P. Kolari, P. Rantala, R. Taipale, M. Kajos, J. Patokoski, J. Rinne, T. Ruuskanen, M. Leskinen, H. Laakso, J. Levula, T. Pohja, E. Siivola, and M. Kulmala http://urn.fi/urn:nbn:fi:att:a8e81c0e-2838-4df4-9589-74a4240138f8

Short summary

Four different methods for quantifying photosynthesis (GPP) at ecosystem scale were tested, of which two are based on carbon dioxide (CO₂) and two on carbonyl sulfide (COS) flux measurements. CO₂-based methods are traditional partitioning, and a new method uses machine learning. We introduce a novel method for calculating GPP from COS fluxes, with potentially better applicability than the former methods. Both COS-based methods gave on average higher GPP estimates than the CO₂-based estimates.