Nitrogen dioxide and ozone levels in urban tree canopies

Harris, Tanner B.; Manning, William J.

doi:10.1016/j.envpol.2010.04.007

Cited by 41 publications

(37 citation statements)

References 7 publications

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“…By using passive samplers, Harris and Manning (2010) measured the concentrations of O 3 and NO 2 inside and directly adjacent to individual tree canopies and found that the average NO 2 concentrations were significantly higher inside the canopies than outside; conversely, O 3 concentrations were higher outside the canopy. Based on these findings Harris and Manning (2010) concluded that current models may be insufficient for describing exposure to and uptake of NO 2 and O 3 by urban trees, particularly for those not forming a closed canopy with neighboring trees.…”

Section: Introductionmentioning

confidence: 97%

Spatio-temporal variations of ozone and nitrogen dioxide concentrations under urban trees and in a nearby open area

et al. 2015

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Section: Introductionmentioning

confidence: 97%

Spatio-temporal variations of ozone and nitrogen dioxide concentrations under urban trees and in a nearby open area

et al. 2015

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“…However, the relation between tree traits (e.g., crown geometry and foliage distribution), "urban street canyon", and weather conditions are complex and cannot be evaluated using i-Tree Eco. For example, low turbulence may promote deposition and increase the N 2 O and CO concentrations or O 3 formation due to longer residence time [86].…”

Section: Uncertainties Associated With Processesmentioning

confidence: 99%

Modeling Ecosystem Services for Park Trees: Sensitivity of i-Tree Eco Simulations to Light Exposure and Tree Species Classification

Pace

Biber

Pretzsch

et al. 2018

Forests

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Ecosystem modeling can help decision making regarding planting of urban trees for climate change mitigation and air pollution reduction. Algorithms and models that link the properties of plant functional types, species groups, or single species to their impact on specific ecosystem services have been developed. However, these models require a considerable effort for initialization that is inherently related to uncertainties originating from the high diversity of plant species in urban areas. We therefore suggest a new automated method to be used with the i-Tree Eco model to derive light competition for individual trees and investigate the importance of this property. Since competition depends also on the species, which is difficult to determine from increasingly used remote sensing methodologies, we also investigate the impact of uncertain tree species classification on the ecosystem services by comparing a species-specific inventory determined by field observation with a genus-specific categorization and a model initialization for the dominant deciduous and evergreen species only. Our results show how the simulation of competition affects the determination of carbon sequestration, leaf area, and related ecosystem services and that the proposed method provides a tool for improving estimations. Misclassifications of tree species can lead to large deviations in estimates of ecosystem impacts, particularly concerning biogenic volatile compound emissions. In our test case, monoterpene emissions almost doubled and isoprene emissions decreased to less than 10% when species were estimated to belong only to either two groups instead of being determined by species or genus. It is discussed that this uncertainty of emission estimates propagates further uncertainty in the estimation of potential ozone formation. Overall, we show the importance of using an individual light competition approach and explicitly parameterizing all ecosystem functions at the species-specific level.

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“…Statistically significant reductions of NO 2 concentrations inside holm oak forests were found in TC and LC, with averaged values of 13% and 6%, respectively. These reductions are comparable to (Grundström and Pleijel, 2014) or higher than (Harris and Manning, 2010;Setälä et al, 2013) values reported in similar empirical studies with deciduous forest species. The larger differences in NO 2 levels in LC were detected during spring, the time when holm oak forests usually show higher stomatal conductance (Alonso et al, 2008).…”

Section: Below-canopy Reduction Of Atmospheric Pollutant Concentrationssupporting

confidence: 65%

Atmospheric concentration and deposition of reactive nitrogen in Spanish forests of Quercus ilex

Gómez¹

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A mi familia.A Tamara."El investigador puede superar todos los peligros que sus debilidades personales le planteen. Puede conservar el entusiasmo de la juventud, que le empujó a contemplar los misterios del universo. Puede seguir dando gracias por el extraordinario privilegio de participar en su exploración. Puede sentir un gozo constante por los descubrimientos hechos por otros, tanto en el pasado como en su propia época. Y puede aprender la difícil lección de que el viaje mismo, y no sólo la gran conquista, da plenitud a la vida humana" Stern, C. (1965) AGRADECIMIENTOS / ACKOWLEDGEMENTS Acknowledgements XI Gracias / thanksa mis padres Mercedes y Antonio. Gracias por el amor, la educación, el apoyo y comprensión (y por las becas para investigación, sin las cuales no habría llegado hasta aquí). Cuántas veces en los últimos meses de escritura he pensado en el camino recorrido desde los cuadernos de Segovia (resolviendo problemas con papá o escribiendo cuentos con mamá) a los cuadernos de la tesis en los que sigo resolviendo y escribiendo.a mi hermana Irene por su paciencia conmigo y su cariño, por ser una luchadora y por cuidar de todos nosotros. A mi hermano Óscar, por su ejemplo, su laboriosidad y su pasión por la ciencia (y la ficción).a mis sobrinos Alba y Ángel. Espero que crezcan en la fascinación por descubrir.a mi abuelo, que es un artista y un entusiasta.a mis amigos, con los que recorrí todos los primeros pasos.a Luis, José Vicente y Benjamín, que vieron en mí el potencial científico. Gracias por darme la oportunidad de entrar en la Ciencia (no os guardo rencor por meterme en esto, lo juro).a todos los jóvenes científicos con los que crucé mis pasos en los comienzos de esta aventura. A Laura y Javi Arañas, a Inés y Teresa, a Nùria, Biel y tantos otros limnólogos, a Sergio y María José... Gracias a todos por vuestro entusiasmo contagioso.a mi familia victoriana. Gracias Ruth, José, Alberto y Oriol por haber sido un oasis en medio de este invivible pero insustituible Madrid, y por seguir siendo parte de mi vida.a mi familia ciemeña. Gracias Javi, Susana, Viki, Isaura, Fernando, Carla, Nacho, Héctor, Rocío... por seis años de compañerismo, por las risas y por compartir las alegrías y los padecimientos de seguir haciendo ciencia.a todos los trabajadores y trabajadoras de los organismos públicos españoles que siguen obstinados en que se exprima todo el potencial científico que tiene nuestro país, a pesar de las dificultades. Gracias especialmente a los trabajadores de la Biblioteca y a los técnicos del Dpto. Gracias a todos los españoles que pagan sus impuestos y especialmente a los que confían en el potencial de nuestros jóvenes investigadores. RESUMEN Resumen XVII ResumenEl depósito atmosférico de nitrógeno (N) es considerado la tercera causa más importante de pérdida de biodiversidad, tras los cambios de uso del suelo y el cambio climático. La cuenca mediterránea presenta una extraordinaria riqueza biológica y se reconoce como uno de los 25 puntos de conservación prioritaria de la diversidad biológica m...

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Nitrogen dioxide and ozone levels in urban tree canopies

Cited by 41 publications

References 7 publications

Spatio-temporal variations of ozone and nitrogen dioxide concentrations under urban trees and in a nearby open area

Spatio-temporal variations of ozone and nitrogen dioxide concentrations under urban trees and in a nearby open area

Modeling Ecosystem Services for Park Trees: Sensitivity of i-Tree Eco Simulations to Light Exposure and Tree Species Classification

Atmospheric concentration and deposition of reactive nitrogen in Spanish forests of Quercus ilex

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