The impact of tropospheric ozone on landscape-level merchantable biomass and ecosystem carbon in Canadian forests

Landry, Jean‐Sébastien; Neilson, E. T.; Kurz, Werner A.; Percy, Kevin E.

doi:10.1007/s10342-012-0656-z

Cited by 12 publications

(5 citation statements)

References 43 publications

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“…Severe O 3 pollution events usually occur in the presence of sunlight and under favorable meteorological conditions, with the abundance of O 3 precursors (NO x and HC) (T. J. . This O 3 pollution in troposphere can deteriorate the air quality and thereby cause adverse effects on human health and vegetation (Feng et al, 2003;Fann and Risley, 2013;Landry et al, 2013). Consequently, the formation mechanism and the integrated prevention of O 3 pollution are of great concern in many megacities all over the world (Xie et al, 2016b).…”

Section: Introductionmentioning

confidence: 99%

Integrated studies of a regional ozone pollution synthetically affected by subtropical high and typhoon system in the Yangtze River Delta region, China

et al. 2016

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Abstract. Severe high ozone (O 3 ) episodes usually have close relations to synoptic systems. A regional continuous O 3 pollution episode was detected over the Yangtze River Delta (YRD) region in China during 7-12 August 2013, in which the O 3 concentrations in more than half of the cities exceeded the national air quality standard. The maximum hourly concentration of O 3 reached 167.1 ppb. By means of the observational analysis and the numerical simulation, the characteristics and the essential impact factors of the typical regional O 3 pollution are comprehensively investigated. The observational analysis shows that the atmospheric subsidence dominated by the western Pacific subtropical high plays a crucial role in the formation of high-level O 3 . The favorable weather conditions, such as extremely high temperature, low relative humidity and weak wind speed, caused by the abnormally strong subtropical high are responsible for the trapping and the chemical production of O 3 in the boundary layer. In addition, when the YRD cities are at the front of Typhoon Utor, the periphery circulation of typhoon system can enhance the downward airflows and cause worse air quality. However, when the typhoon system weakens the subtropical high, the prevailing southeasterly surface wind leads to the mitigation of the O 3 pollution. The integrated process rate (IPR) analysis incorporated in the Community Multi-scale Air Quality (CMAQ) model is applied to further illustrate the combined influence of subtropical high and typhoon system in this O 3 episode. The results show that the vertical diffusion (VDIF) and the gas-phase chemistry (CHEM) are two major contributors to O 3 formation. During the episode, the contributions of VDIF and CHEM to O 3 maintain the high values over the YRD region. On 10-12 August, the cities close to the sea are apparently affected by the typhoon system, with the contribution of VDIF increasing to 28.45 ppb h −1 in Shanghai and 19.76 ppb h −1 in Hangzhou. In contrast, the cities far away from the sea can hardly be affected by the periphery circulation of typhoon system. When the typhoon system significantly weakens the subtropical high, the contribution values of all individual processes decrease to a low level in all YRD cities. These results provide an insight for the O 3 pollution synthetically impacted by the western Pacific subtropical high and the tropical cyclone system.

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Section: Introductionmentioning

confidence: 99%

Integrated studies of a regional ozone pollution synthetically affected by subtropical high and typhoon system in the Yangtze River Delta region, China

et al. 2016

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“…With immature trees, and in successional phases of renewal, plants tend to have traits of low leaf density, high photosynthetic capacity per dry weight, low water‐use efficiency and low leaf longevity (Bussotti 2008). Such traits can make plants more susceptible to the oxidative pressures induced by O 3 (see also Landry et al 2013) in a way that adult trees in late successional stands are not, especially those that have acclimated to higher O 3 conditions (Bussotti 2008). Currently, it is difficult to assess the likely impact of O 3 on carbon drawdown in immature restoration tree plantings, especially at landscape scales.…”

Section: Tropospheric Ozone and Restoration Goalsmentioning

confidence: 99%

Out of sight, Out of mind — but not Out of scope: the need to consider ozone (O₃) in restoration science, policy, and practice

Perring

Bullock

Alison

et al. 2022

Restoration Ecology

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Restoration ecologists have local-to global-scale ambitions in a policy framework of sustainable development goals and reversing biodiversity loss. Emphasis is given to environmental alteration, typically considering land degradation and climate change. Other related environmental drivers, such as pollution, receive less attention. Here we emphasize that terrestrial restoration discourse needs to consider tropospheric ozone (O 3 ) pollution. O 3 's pervasive influence on plants and other ecosystem components provides for the possibility of consequences at community and ecosystem levels. The precursor chemicals that lead to O 3 formation are increasing, precipitously so in rapidly industrializing regions of the world. Yet, a review of critical restoration guidance and journals suggests that because O 3 is out of sight, it remains out of mind. Based on a narrative cross-discipline literature review, we examine: (1) How O 3 could affect the achievement of restoration goals and (2) How restoration interventions could feedback on tropospheric O 3 . Evidence, currently limited, suggests that O 3 could impair the achievement of restoration goals to as great an extent as other drivers, but, in general, we lack direct quantification. Restoration interventions (e.g. tree planting) that may be considered successful can actually exacerbate O 3 pollution with negative consequences for food security and human health. These wide-ranging effects, across multiple goals, mean that O 3 is not out of scope for restoration science, policy, and practice. In detailing a strategic ozone-aware restoration agenda, we suggest how restoration science and policy can quantify O 3 's influence, while outlining steps practitioners can take to adapt to/mitigate the impacts of O 3 pollution.

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“…Ozone in the stratosphere protects Earth's life system from the threat of high-energy ultraviolet radiation (Ramanathan and Dickinson, 1979;Zhang et al, 2018). While in the troposphere, ozone may have a significant impact on human health and the ecosystem (Manisalidis et al, 2020;Landry et al, 2013). For instance, high concentrations of near-surface ozone can induce human respiratory and immune system diseases or even directly threaten life and jeopardize the physiological function of crops (Mills et al, 2018;Lefohn et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Substantial Near-Surface Spring Ozone Enhancement due to Stratospheric Intrusion in the Northeastern Qinghai–Tibet Plateau, China

Kou

et al. 2022

Front. Environ. Sci.

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Stratospheric ozone intrusion plays an important role in affecting the tropospheric ozone concentrations in the troposphere through stratosphere to troposphere transport (STT). Nevertheless, there are very limited studies on the quantification of the effect. Focusing on a typical event on 9–12 May 2015, when STT occurs over the northeastern Qinghai–Tibet Plateau of China, the observations and reanalysis data indicate that STT is accompanied by high potential vorticity and low specific humidity. In order to quantify the extent to which the STT may elevate the ozone concentrations, an inert tracer is added to the boundary conditions of the Community Multiscale Air Quality (CMAQ), which is driven by the Weather Research and Forecasting (WRF) model. The meteorological conditions simulated by WRF nicely reproduce the distributions of potential vorticity (PV) and water vapor in the upper troposphere. Through the physical processes of diffusion, advection, and dry and wet deposition, the ozone tracer concentrations simulated from CMAQ well capture the spatial propagation and evolution of stratospheric ozone intrusion over Qinghai–Tibet Plateau, warranting the confidence in interpreting the simulated results in quantifying the STT. The STT event indicates the near-surface ozone enhancement of approximately 10–20 ppbv covering half of Qinghai province, even spreading to a broader area of eastern China. For the typical remote mountain such as Waliguan, clear ozone enhancement is obtained over the lower level of the troposphere. The method used in this study is applicable to other regions as well, which can be applied in the future to detect the STT at a wider spatiotemporal scale and help the policymakers identify the ozone sources and make efficient strategies for the ozone pollution control.

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The impact of tropospheric ozone on landscape-level merchantable biomass and ecosystem carbon in Canadian forests

Cited by 12 publications

References 43 publications

Integrated studies of a regional ozone pollution synthetically affected by subtropical high and typhoon system in the Yangtze River Delta region, China

Integrated studies of a regional ozone pollution synthetically affected by subtropical high and typhoon system in the Yangtze River Delta region, China

Out of sight, Out of mind — but not Out of scope: the need to consider ozone (O₃) in restoration science, policy, and practice

Substantial Near-Surface Spring Ozone Enhancement due to Stratospheric Intrusion in the Northeastern Qinghai–Tibet Plateau, China

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The impact of tropospheric ozone on landscape-level merchantable biomass and ecosystem carbon in Canadian forests

Cited by 12 publications

References 43 publications

Integrated studies of a regional ozone pollution synthetically affected by subtropical high and typhoon system in the Yangtze River Delta region, China

Integrated studies of a regional ozone pollution synthetically affected by subtropical high and typhoon system in the Yangtze River Delta region, China

Out of sight, Out of mind — but not Out of scope: the need to consider ozone (O3) in restoration science, policy, and practice

Substantial Near-Surface Spring Ozone Enhancement due to Stratospheric Intrusion in the Northeastern Qinghai–Tibet Plateau, China

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Product

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Out of sight, Out of mind — but not Out of scope: the need to consider ozone (O₃) in restoration science, policy, and practice