Synergy between TROPOMI sun-induced chlorophyll fluorescence and MODIS spectral reflectance for understanding the dynamics of gross primary productivity at Integrated Carbon Observatory System (ICOS) ecosystem flux sites

Balde, Hamadou; Hmimina, Gabriel; Goulas, Yves; Latouche, Gwendal; Soudani, Kamel

doi:https://doi.org/10.5194/bg-20-1473-2023

Articles | Volume 20, issue 7

https://doi.org/10.5194/bg-20-1473-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-20-1473-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 7

Research article

|

14 Apr 2023

Research article |

| 14 Apr 2023

Synergy between TROPOMI sun-induced chlorophyll fluorescence and MODIS spectral reflectance for understanding the dynamics of gross primary productivity at Integrated Carbon Observatory System (ICOS) ecosystem flux sites

Hamadou Balde, Gabriel Hmimina, Yves Goulas, Gwendal Latouche, and Kamel Soudani

Supplement

https://doi.org/10.5194/bg-20-1473-2023-supplement

Data sets

Ecosystem final quality (L2) product in ETC-Archive format – release 2022-1 ICOS RI https://doi.org/10.18160/PAD9-HQHU

Drought-2018 ecosystem eddy covariance flux product for 52 stations in FLUXNET-Archive format Drought 2018 Team and ICOS Ecosystem Thematic Centre https://doi.org/10.18160/YVR0-4898

Ungridded TROPOMI SIF (at 740nm) (1.0) P. Koehler and C. Frankenberg https://doi.org/10.22002/D1.1347

MOD09GA MODIS/Terra Surface Reflectance Daily L2G Global 1kmand 500m SIN Grid V006 E. Vermote and R. Wolfe https://doi.org/10.5067/MODIS/MOD09GA.006

MYD09GQ MODIS/Aqua Surface Reflectance Daily L2G Global 250m SIN Grid V006 E. Vermote and R. Wolfe https://doi.org/10.5067/MODIS/MYD09GQ.006

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Short summary

This study focuses on the relationship between sun-induced chlorophyll fluorescence (SIF) and ecosystem gross primary productivity (GPP) across the ICOS European flux tower network. It shows that SIF, coupled with reflectance observations, explains over 80 % of the GPP variability across diverse ecosystems but fails to bring new information compared to reflectance alone at coarse spatial scales (~5 km). These findings have applications in agriculture and ecophysiological studies.