Modelling sun-induced fluorescence and photosynthesis with a land surface model at local and regional scales in northern Europe

Thum, Tea; Zaehle, Sönke; Köhler, Philipp; Aalto, Tuula; Aurela, Mika; Guanter, Luis; Kolari, Pasi; Laurila, Tuomas; Lohila, Annalea; Magnani, Federico; Van Der Tol, Christiaan; Markkanen, Tiina

doi:https://doi.org/10.5194/bg-14-1969-2017

Articles | Volume 14, issue 7

https://doi.org/10.5194/bg-14-1969-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-14-1969-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 14, issue 7

Research article

|

11 Apr 2017

Research article |

| 11 Apr 2017

Modelling sun-induced fluorescence and photosynthesis with a land surface model at local and regional scales in northern Europe

Tea Thum, Sönke Zaehle, Philipp Köhler, Tuula Aalto, Mika Aurela, Luis Guanter, Pasi Kolari, Tuomas Laurila, Annalea Lohila, Federico Magnani, Christiaan Van Der Tol, and Tiina Markkanen

Supplement

https://doi.org/10.5194/bg-14-1969-2017-supplement

Data sets

leaf level chlorophyll fluorescence data AVAA http://avaa.tdata.fi/web/smart/smear

The micrometeorological data and meteorological data AVAA http://avaa.tdata.fi/openida/dl.jsp?pid=urn:nbn:fi:csc-ida-2x201611242015017385197s

Meteorological and CO2 flux data for FI-Hyy P. Kolari http://avaa.tdata.fi/openida/dl.jsp?pid=urn:nbn:fi:csc-ida-2x201611242015017385197s

Model code and software

JSBACH model Max Planck Institute for Meteorology http://www.mpimet.mpg.de/en/science/models/license/

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Short summary

Modelling seasonal cycle at the coniferous forests poses a challenge. We implemented a model for sun-induced chlorophyll fluorescence (SIF) to a land surface model JSBACH. It was used to study the seasonality of the carbon cycle in the Fenno-Scandinavian region. Comparison was made to direct CO₂ flux measurements and satellite observations of SIF. SIF proved to be a better proxy for photosynthesis than the fraction of absorbed photosynthetically active radiation.