Environmental Change Is Reshaping the Temperature Sensitivity of Sesquiterpene Emissions and Their Atmospheric Impacts DOI Creative Commons
Efstratios Bourtsoukidis, Alex Guenther, Hui Wang

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(6)

Published: June 1, 2025

Air temperature is a critical regulator of ecosystem functions, including the release biogenic volatile organic compounds (BVOCs) that mediate biosphere-atmosphere interactions. Among these, sesquiterpenes (SQTs) stand out for their dual role as ecologically significant and highly reactive atmospheric constituents. Despite inherently complex relationship between emissions, global emission estimates rely on simplistic parameterizations, assuming fixed exponential response across all ecosystems environmental conditions. Here, we synthesize two decades (1997-2019) SQT studies, uncovering variability in responses basal rates driven by plant functional types (PFTs) diverse co-factors. When PFT-dependent parameterizations are integrated into emission-chemistry simulations, results reveal sensitive feedbacks processes, ground-level ozone (O3) production secondary aerosol (SOA) formation. Surprisingly, identify statistically decline over time, suggesting evolving changes reshaping fundamental emissions. This meta-analysis highlights sensitivity (βSQT) key parameter at interface biosphere, abiotic biotic change, with cascading effects air quality climate. Our findings emphasize potential to consider βSQT "volatile stressometer" ecosystem-atmosphere interactions, where stresses regulate responses, chemistry wider implications future climate-vegetation feedbacks.

Language: Английский

Environmental Change Is Reshaping the Temperature Sensitivity of Sesquiterpene Emissions and Their Atmospheric Impacts DOI Creative Commons
Efstratios Bourtsoukidis, Alex Guenther, Hui Wang

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(6)

Published: June 1, 2025

Air temperature is a critical regulator of ecosystem functions, including the release biogenic volatile organic compounds (BVOCs) that mediate biosphere-atmosphere interactions. Among these, sesquiterpenes (SQTs) stand out for their dual role as ecologically significant and highly reactive atmospheric constituents. Despite inherently complex relationship between emissions, global emission estimates rely on simplistic parameterizations, assuming fixed exponential response across all ecosystems environmental conditions. Here, we synthesize two decades (1997-2019) SQT studies, uncovering variability in responses basal rates driven by plant functional types (PFTs) diverse co-factors. When PFT-dependent parameterizations are integrated into emission-chemistry simulations, results reveal sensitive feedbacks processes, ground-level ozone (O3) production secondary aerosol (SOA) formation. Surprisingly, identify statistically decline over time, suggesting evolving changes reshaping fundamental emissions. This meta-analysis highlights sensitivity (βSQT) key parameter at interface biosphere, abiotic biotic change, with cascading effects air quality climate. Our findings emphasize potential to consider βSQT "volatile stressometer" ecosystem-atmosphere interactions, where stresses regulate responses, chemistry wider implications future climate-vegetation feedbacks.

Language: Английский

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