Inferring the diurnal variability of OH radical concentrations over the Amazon 
from BVOC measurements

Ringsdorf, Akima; Edtbauer, Achim; Vilà-Guerau de Arellano, Jordi; Pfannerstill, Eva; Gromov, Sergey; Kumar, Vinod; Pozzer, Andrea; Wolff, Stefan; Tsokankunku, Anywhere; Sörgel, Matthias; Sá, Marta; de Araujo , Alessandro; Ditas, Florian; Pöhlker, Christopher; Lelieveld, Jos; Williams, Jonathan

doi:10.21203/rs.3.rs-1686416/v1

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Inferring the diurnal variability of OH radical concentrations over the Amazon from BVOC measurements

MPS-Authors

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Ringsdorf, Akima
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons207353

Edtbauer, Achim
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons252339

Vilà-Guerau de Arellano, Jordi
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons207351

Pfannerstill, Eva
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons100964

Gromov, Sergey
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons252274

Kumar, Vinod
Satellite Remote Sensing, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons230426

Wolff, Stefan
Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons144590

Tsokankunku, Anywhere
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons211225

Sörgel, Matthias
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons230376

Ditas, Florian
Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons104597

Pöhlker, Christopher
Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons101104

Lelieveld, Jos
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons101364

Williams, Jonathan
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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https://assets.researchsquare.com/files/rs-1686416/v1/36a6d301-8a8e-497d-8e36-0f15e6c4ebde.pdf?c=1680694321
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Citation

Ringsdorf, A., Edtbauer, A., Vilà-Guerau de Arellano, J., Pfannerstill, E., Gromov, S., Kumar, V., et al. (2022). Inferring the diurnal variability of OH radical concentrations over the Amazon from BVOC measurements. Research Square. doi:10.21203/rs.3.rs-1686416/v1.

Cite as: https://hdl.handle.net/21.11116/0000-000D-3D68-B

Abstract

Terrestrial vegetation emits vast amounts of monoterpenes into the atmosphere, influencing ecological interactions and atmospheric chemistry. Global emissions, mostly driven by responses to abiotic stress, 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 all published monoterpene emission data and show that this relationship is more intricate and sensitive than previously thought. We find that co-occurring environmental stresses amplify the temperature sensitivity of the emissions that is primarily related to the specific plant functional type (PFT). On average, warmer ecosystems appear more sensitive, indicating the adjustment of plants in response to thermal stress. Implementing a PFT-dependent β in a biogenic emission model, coupled with a chemistry – climate model, demonstrated that atmospheric processes are exceptionally dependent on monoterpene emissions which are subject to amplified variations under rising temperatures.