Large but decreasing effect of ozone on the European carbon sink

Oliver, Rebecca J.; Mercado, Lina M.; Sitch, Stephen; Simpson, David; Medlyn, Belinda E.; Lin, Yan‐Shih; Folberth, Gerd

doi:10.5194/bg-2017-409

Cited by 12 publications

(24 citation statements)

References 6 publications

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“…Reactive oxygen species also impair photosynthetic enzyme activities, enhance respiration, and interfere with carbon allocation (Ainsworth et al, 2012;Fiscus et al, 2005). Ozone injury to plants alters terrestrial carbon and water cycling (Arnold et al, 2018;Franz et al, 2017;Hoshika et al, 2015;Lombardozzi et al, 2015;Oliver et al, 2018;Sadiq et al, 2017;G. Sun et al, 2012;Yue & Unger, 2014), which influences boundary-layer meteorology (J.…”

Section: Introductionmentioning

confidence: 99%

Dry Deposition of Ozone Over Land: Processes, Measurement, and Modeling

Clifton

Fiore

Massman

et al. 2020

Reviews of Geophysics

114

133

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Dry deposition of ozone is an important sink of ozone in near‐surface air. When dry deposition occurs through plant stomata, ozone can injure the plant, altering water and carbon cycling and reducing crop yields. Quantifying both stomatal and nonstomatal uptake accurately is relevant for understanding ozone's impact on human health as an air pollutant and on climate as a potent short‐lived greenhouse gas and primary control on the removal of several reactive greenhouse gases and air pollutants. Robust ozone dry deposition estimates require knowledge of the relative importance of individual deposition pathways, but spatiotemporal variability in nonstomatal deposition is poorly understood. Here we integrate understanding of ozone deposition processes by synthesizing research from fields such as atmospheric chemistry, ecology, and meteorology. We critically review methods for measurements and modeling, highlighting the empiricism that underpins modeling and thus the interpretation of observations. Our unprecedented synthesis of knowledge on deposition pathways, particularly soil and leaf cuticles, reveals process understanding not yet included in widely used models. If coordinated with short‐term field intensives, laboratory studies, and mechanistic modeling, measurements from a few long‐term sites would bridge the molecular to ecosystem scales necessary to establish the relative importance of individual deposition pathways and the extent to which they vary in space and time. Our recommended approaches seek to close knowledge gaps that currently limit quantifying the impact of ozone dry deposition on air quality, ecosystems, and climate.

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Section: Introductionmentioning

confidence: 99%

Dry Deposition of Ozone Over Land: Processes, Measurement, and Modeling

Clifton

Fiore

Massman

et al. 2020

Reviews of Geophysics

114

133

View full text Add to dashboard Cite

show abstract

“…studies have performed multiple global simulations with climate-chemistry-biosphere models to quantify the effects of air pollutants on terrestrial biosphere (Mercado et al, 2009;Oliver et al, 2018;Schiferl and Heald, 2018; Yue and Unger, 2015). In contrast, very few studies have quantified the O 3 -induced biogeochemical and meteorological feedbacks to air pollution concentrations (Sadiq et al, 2017;Zhou et al, 2018).…”

Section: Manymentioning

confidence: 99%

Implementation of Yale Interactive terrestrial Biosphere model version 1.0 into GEOS-Chem version 12.0.0: a tool for biosphere-chemistry interactions

Lei¹,

Yue²,

Liu³

et al. 2019

Preprint

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Abstract. The terrestrial biosphere and atmospheric chemistry interact through multiple feedbacks, but the models of vegetation and chemistry are developed separately. In this study, the Yale Interactive terrestrial Biosphere (YIBs) model, a dynamic vegetation model with biogeochemical processes, is implemented into the Chemical Transport Model GEOS-Chem version 12.0.0. Within the GC-YIBs framework, leaf area index (LAI) and canopy stomatal conductance dynamically predicted by YIBs are used for dry deposition calculation in GEOS-Chem. In turn, the simulated surface ozone (O3) by GEOS-Chem affect plant photosynthesis and biophysics in YIBs. The updated stomatal conductance and LAI improve the simulated daytime O3 dry deposition velocity for major tree species. Compared with the GEOS-Chem model, the model-to-observation correlation for dry deposition velocities increases from 0.76 to 0.85 while the normalized mean error decreases from 35 % to 27 % using the GC-YIBs model. Furthermore, we quantify O3 vegetation damaging effects and find a global reduction of annual gross primary productivity by 2–5 %, with regional extremes of 11–15 % in the eastern U.S. and eastern China. The online GC-YIBs model provides a useful tool for discerning the complex feedbacks between atmospheric chemistry and terrestrial biosphere under global change.

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“…These effects are likely the primary cause for reduced rates of net photosynthesis and decreased supply of carbon and energy for growth and net primary production (NPP), which contributes to the commonly observed ozone-induced reductions in leaf area and plant biomass (Morgan et al, 2003;Lombardozzi et al, 2013;Wittig et al, 2009). Changes in tropospheric ozone abundance and associated changes in ozone-induced damage thus have the potential to affect the ability of the terrestrial biosphere to sequester carbon (Harmens and Mills, 2012;Oliver et al, 2017). However, a quantitative understanding of the effect of ozone pollution on forest growth and carbon sequestration at the regional scale is still lacking.…”

Section: Introductionmentioning

confidence: 99%

“…Terrestrial biosphere models can be used to obtain regional or global estimates of ozone damage based on an understanding of how ozone affects plant processes leading to C assimilation and growth. Modelling algorithms to estimate regional or global impacts of ozone on gross primary production (GPP) have been developed for several of these terrestrial biosphere models (Sitch et al, 2007;Lombardozzi et al, 2012aLombardozzi et al, , 2015Franz et al, 2017;Oliver et al, 2017). However, simulated reductions in GPP due to ozone damage vary substantially between models and model versions.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of simulated biomass damage in forest ecosystems induced by ozone against observation-based estimates

Franz

Alonso

Arneth

et al. 2018

Preprint

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Abstract. Regional estimates of the effects of ozone pollution on forest growth depend on the availability of reliable damage functions that estimate a representative ecosystem response to ozone exposure. A number of such damage functions for forest tree species and forest functional types have recently been published and subsequently applied in terrestrial biosphere models to estimate regional or global effects of ozone on forest tree productivity and carbon storage in the living plant biomass. The resulting impacts estimated by these biosphere models show large uncertainty in the magnitude of ozone effects predicted. To understand the role that these damage functions play in determining the variability of estimated ozone impacts, we use the O-CN biosphere model to provide a standardised modelling framework. We test four published damage functions describing the leaf-level, photosynthetic response to ozone exposure (targeting Vcmax or net photosynthesis) in terms of their simulated whole-tree biomass responses against field data from 23 ozone filtration/fumigation experiments conducted with European tree species at sites across Europe with a range of climatic conditions. Our results show that none of these previously published damage functions lead to simulated whole-tree biomass reductions in agreement with the observed dose-response relationships derived from these field experiments, and instead lead to significant over- / or underestimations of the ozone effect. By re-parameterising these photosynthetic based damage functions we develop linear, plant functional type specific dose-response relationships, which provide accurate simulations of the observed whole-tree biomass response across these 23 experiments.

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Large but decreasing effect of ozone on the European carbon sink

Cited by 12 publications

References 6 publications

Dry Deposition of Ozone Over Land: Processes, Measurement, and Modeling

Dry Deposition of Ozone Over Land: Processes, Measurement, and Modeling

Implementation of Yale Interactive terrestrial Biosphere model version 1.0 into GEOS-Chem version 12.0.0: a tool for biosphere-chemistry interactions

Evaluation of simulated biomass damage in forest ecosystems induced by ozone against observation-based estimates

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