Biogeosciences
Biogeosciences
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Articles | Volume 21, issue 15
Articles | Volume 21, issue 15
https://doi.org/10.5194/bg-21-3571-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-21-3571-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 15
Research article
 | 
13 Aug 2024
Research article |  | 13 Aug 2024

Compound soil and atmospheric drought (CSAD) events and CO2 fluxes of a mixed deciduous forest: the occurrence, impact, and temporal contribution of main drivers

Liliana Scapucci, Ankit Shekhar, Sergio Aranda-Barranco, Anastasiia Bolshakova, Lukas Hörtnagl, Mana Gharun, and Nina Buchmann

Data sets

Subcanopy eddy covariance and chamber soil respiration data L. Scapucci et al. https://doi.org/10.3929/ethz-b-000687324

CH-LAE FP2022 (2004-2022): Ecosystem fluxes and meteorological data from Lägeren A. Shekhar et al. https://doi.org/10.3929/ethz-b-000582198

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Short summary
Forests face increased exposure to “compound soil and atmospheric drought” (CSAD) events due to global warming. We examined the impacts and drivers of CO2 fluxes during CSAD events at multiple layers of a deciduous forest over 18 years. Results showed reduced net ecosystem productivity and forest-floor respiration during CSAD events, mainly driven by soil and atmospheric drought. This unpredictability in forest CO2 fluxes jeopardises reforestation projects aimed at mitigating CO2 emissions.
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