Temperature extremes of 2022 reduced carbon uptake by forests in Europe

Wouter Peters; Auke van der Woude; Ingrid Luijkx; Emilie Joetzjer; Sébastien Lafont; Benjamin Loubet; Pedro-Henrique Herig-Coimbra; Denis Loustau; Gerbrand Koren; Philippe Ciais; Michel Ramonet; Yidi Xu; Ana Bastos; Stephen Sitch; Tobias Kneuer; Dagmar Kubistin; Remco De Kok; Santiago Botía

doi:10.21203/rs.3.rs-2841861/v1

Temperature extremes of 2022 reduced carbon uptake by forests in Europe

Wouter Peters^*, Auke van der Woude, Ingrid Luijkx, Emilie Joetzjer, Sébastien Lafont, Benjamin Loubet, Pedro-Henrique Herig-Coimbra, Denis Loustau, Gerbrand Koren, Philippe Ciais, Michel Ramonet, Yidi Xu, Ana Bastos, Stephen Sitch, Tobias Kneuer, Dagmar Kubistin, Remco De Kok, Santiago Botía

^*Corresponding author for this work

Research output: Working paper › Preprint › Academic

Abstract

The year 2022 saw record breaking temperatures in Europe during both summer and fall. Close to 30% of the European continent was under severe summer drought with a similarly large area affected (3.0 million km2) as during the recent 2018 drought, but now located in central and southeastern Europe. Multiple sets of observations suggest a reduction of net ecosystem carbon exchange in summer (57-62 TgC) over this area, and specific sites in France even showed a widespread summertime carbon release by forests, as well as wildfires. A warm fall with prolonged carbon uptake offered only partial compensation (up to 32%) for the carbon uptake lost due to drought. This severity of this second drought event in 5 years suggests these impacts to no longer be exceptional, and important to factor into Europe's developing plans for net-zero greenhouse gas emissions that rely on carbon sequestration by forests.

Original language	English
Publisher	Research Square
Number of pages	14
DOIs	https://doi.org/10.21203/rs.3.rs-2841861/v1
Publication status	Published - May 2023

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Peters, W., Woude, A. V. D., Luijkx, I., Joetzjer, E., Lafont, S., Loubet, B., Herig-Coimbra, P.-H., Loustau, D., Koren, G., Ciais, P., Ramonet, M., Xu, Y., Bastos, A., Sitch, S., Kneuer, T., Kubistin, D., Kok, R. D., & Botía, S. (2023). Temperature extremes of 2022 reduced carbon uptake by forests in Europe. Research Square. https://doi.org/10.21203/rs.3.rs-2841861/v1

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abstract = "The year 2022 saw record breaking temperatures in Europe during both summer and fall. Close to 30% of the European continent was under severe summer drought with a similarly large area affected (3.0 million km2) as during the recent 2018 drought, but now located in central and southeastern Europe. Multiple sets of observations suggest a reduction of net ecosystem carbon exchange in summer (57-62 TgC) over this area, and specific sites in France even showed a widespread summertime carbon release by forests, as well as wildfires. A warm fall with prolonged carbon uptake offered only partial compensation (up to 32%) for the carbon uptake lost due to drought. This severity of this second drought event in 5 years suggests these impacts to no longer be exceptional, and important to factor into Europe's developing plans for net-zero greenhouse gas emissions that rely on carbon sequestration by forests.",

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AU - Luijkx, Ingrid

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AU - Lafont, Sébastien

AU - Loubet, Benjamin

AU - Herig-Coimbra, Pedro-Henrique

AU - Loustau, Denis

AU - Koren, Gerbrand

AU - Ciais, Philippe

AU - Ramonet, Michel

AU - Xu, Yidi

AU - Bastos, Ana

AU - Sitch, Stephen

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AB - The year 2022 saw record breaking temperatures in Europe during both summer and fall. Close to 30% of the European continent was under severe summer drought with a similarly large area affected (3.0 million km2) as during the recent 2018 drought, but now located in central and southeastern Europe. Multiple sets of observations suggest a reduction of net ecosystem carbon exchange in summer (57-62 TgC) over this area, and specific sites in France even showed a widespread summertime carbon release by forests, as well as wildfires. A warm fall with prolonged carbon uptake offered only partial compensation (up to 32%) for the carbon uptake lost due to drought. This severity of this second drought event in 5 years suggests these impacts to no longer be exceptional, and important to factor into Europe's developing plans for net-zero greenhouse gas emissions that rely on carbon sequestration by forests.

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Temperature extremes of 2022 reduced carbon uptake by forests in Europe

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