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Article Dans Une Revue Communications Earth & Environment Année : 2024

High temperature sensitivity of monoterpene emissions from global vegetation

Andrea Pozzer
Jonathan Williams
David Makowski
Josep Peñuelas
Vasileios N Matthaios
  • Fonction : Auteur
Ana Maria Yañez-Serrano
  • Fonction : Auteur
Jos Lelieveld
Mihalis Vrekoussis
Nikos Daskalakis

Résumé

Terrestrial vegetation emits vast amounts of monoterpenes into the atmosphere, influencing ecological interactions and atmospheric chemistry. Global emissions are simulated as a function of temperature with a fixed exponential relationship (β coefficient) across forest ecosystems and environmental conditions. We applied meta-analysis algorithms on 40 years of published monoterpene emission data and show that relationship between emissions and temperature is more sensitive and intricate than previously thought. Considering the entire dataset, a higher temperature sensitivity (β = 0.13 ± 0.01 °C-1) is derived but with a linear increase with the reported coefficients of determination (R 2), indicating that co-occurring environmental factors modify the temperature sensitivity of the emissions that is primarily related to the specific plant functional type (PFT). Implementing a PFT-dependent β in a biogenic emission model, coupled with a chemistryclimate model, demonstrated that atmospheric processes are exceptionally dependent on monoterpene emissions which are subject to amplified variations under rising temperatures.
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Dates et versions

hal-04379324 , version 1 (08-01-2024)

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Efstratios Bourtsoukidis, Andrea Pozzer, Jonathan Williams, David Makowski, Josep Peñuelas, et al.. High temperature sensitivity of monoterpene emissions from global vegetation. Communications Earth & Environment, 2024, 5 (1), pp.23. ⟨10.1038/s43247-023-01175-9⟩. ⟨hal-04379324⟩
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