Multilayer modelling of ozone fluxes on winter wheat reveals large deposition on wet senescing leaves

Potier, Élise; Ogée, Jérôme; Jouanguy, Julien; Lamaud, Éric; Stella, Patrick; Personne, Erwan; Durand, Brigitte; Mascher, Nicolas; Loubet, Benjamin

doi:10.1016/j.agrformet.2015.05.006

Cited by 27 publications

(42 citation statements)

References 89 publications

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“…High v d after rain and dew observed in field studies is often attributed to increases in cuticular uptake (Altimir et al, ; Finkelstein et al, ; Fuentes et al, ; Grantz et al, , ; Lamaud et al, ; Potier et al, ; Turnipseed et al, ). Increases in ozone dry deposition on wet leaves in the laboratory (Fuentes & Gillespie, ) and in a field chamber experiment after spraying the grass in the chamber with water (Pleijel et al, ) are also attributed to increases in cuticular uptake.…”

Section: Theory Models and Observations Of Terrestrial Ozone Deposimentioning

confidence: 99%

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

Clifton

Fiore

Massman

et al. 2020

Reviews of Geophysics

129

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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: Theory Models and Observations Of Terrestrial Ozone Deposimentioning

confidence: 99%

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

Clifton

Fiore

Massman

et al. 2020

Reviews of Geophysics

129

View full text Add to dashboard Cite

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“…Cuticular uptake occurs when ozone reacts with compounds on the leaf surface (Potier et al, ; Sun, Moravek, Trebs, et al, ). Water films from dew and rain may enhance cuticular uptake, but there is variability in the response to wetness observed in the field and laboratory (Altimir et al, ; Cape et al, ; Fuentes et al, ; Grantz et al, , ; Lamaud et al, ; Massman, ; Pöschl & Shiraiwa, ; Potier et al, ; Turnipseed et al, ; Zhang et al, ). Previous work suggests that ozone dry deposition to rain‐wet leaves may be low because rain cleanses the leaf surface of substances reactive with ozone (Finkelstein et al, ; Potier et al, ); this may explain some of the observed variability in the response to wetness.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Controls on Observed Daytime Ozone Deposition Velocity Over Northeastern U.S. Forests During Summer

et al. 2019

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Spatiotemporal variability in ozone dry deposition is often overlooked despite its implications for interpreting and modeling tropospheric ozone concentrations accurately. Understanding the influences of stomatal versus nonstomatal deposition processes on ozone deposition velocity is important for attributing observed changes in the ozone depositional sink and associated damage to ecosystems. Here, we aim to identify the stomatal versus nonstomatal deposition processes driving observed variability in ozone deposition velocity over the northeastern United States during June–September. We use ozone eddy covariance measurements from Harvard Forest in Massachusetts, which span a decade, and from Kane Experimental Forest in Pennsylvania and Sand Flats State Forest in New York, which span one growing season each, along with observation‐driven modeling. Using a cumulative precipitation indicator of soil wetness, we infer that high soil uptake during dry years and low soil uptake during wet years may contribute to the twofold interannual variability in ozone deposition velocity at Harvard Forest. We link stomatal deposition and humidity to variability in ozone deposition velocity on daily timescales. The humidity dependence may reflect higher uptake by leaf cuticles under humid conditions, noted in previous work. Previous work also suggests that uptake by leaf cuticles may be enhanced after rain, but we find that increases in ozone deposition velocity on rainy days are instead mostly associated with increases in stomatal conductance. Our analysis highlights a need for constraints on subseasonal variability in ozone dry deposition to soil and fast in‐canopy chemistry during ecosystem stress.

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“…The increased υ d s recorded during autumnal months at our site coincided with a seasonally dependent increased frequency of canopy wetness events, occurrence of needle senescence and the reaching of a minimum water table depth at the end of the growing season. Potier et al (2015) concluded that enhanced deposition of O 3 on wet senescing leaves of wheat was due to leaching of apoplastic antioxidants toward the leaf surface. Besides an altered chemical proclivity of wet senescent foliage for trapping O 3 , it is also conceivable that the decrease of LAI during the leaf-fall period, could allow for a better turbulent transfer of O 3 in the trunk space, enabling a better transport toward the forest soil.…”

Section: Drivers Of Non-stomatal Depositionmentioning

confidence: 99%

Variability of Ozone Deposition Velocity Over a Mixed Suburban Temperate Forest

Neirynck¹,

Verstraeten²

2018

Front. Environ. Sci.

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A 10-year long dataset of half-hourly ozone (O 3 ) fluxes was used to study the variability in deposition velocity (υ d ) over a mixed temperate suburban forest. Average (median) υ d amounted to 0.70 (0.46) cm s −1 , with day-and night-time average (median) of 0.98 (0.73) cm s −1 and 0.46 (0.30) cm s −1 , respectively. It was found that the precipitation form had a marked impact on υ d and the deposition efficiency (υ d/ υ dmax ), with highest values measured when the canopy was dew-wetted or covered with snow. The analysis further evidenced that traffic volume led to increased deposition due to the presence of chemical reactions between O 3 and nitric oxide (NO) above the canopy surface. During the working week, daytime values of υ d, υ d/ υ dmax and the O 3 fluxes (F) were found to be significantly higher than the weekend values, especially during the winter half-year. In a next step, half hourly deposition data were aggregated into day-and night-time monthly values, for a correlative study with measured environmental variables. Monthly average night-time/daytime υ d and υ d/ υ dmax were positively correlated with the relative humidity at the canopy surface (RH(z 0 ′ )) and negatively correlated with the water levels below the ground surface. During the daytime, monthly υ d and υ d/ υ dmax were additionally increased during the working-week when traffic volume was high. There existed, however, substantially different weather conditions, in which unaccounted covariates with a totally different meteorological signature controlled the υ d and F. It was speculated that, among other, biogenic volatile compounds (BVOCs) could have contributed to O 3 quenching in some (spring) months with severe drought stress.

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Multilayer modelling of ozone fluxes on winter wheat reveals large deposition on wet senescing leaves

Cited by 27 publications

References 89 publications

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

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

Spatiotemporal Controls on Observed Daytime Ozone Deposition Velocity Over Northeastern U.S. Forests During Summer

Variability of Ozone Deposition Velocity Over a Mixed Suburban Temperate Forest

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