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Deposition and Resuspension Mechanisms Into and From Tree Canopies: A Study Modeling Particle Removal of Conifers and Broadleaves in Different Cities

Pace, Rocco; Grote, Rüdiger

Abstract (englisch):
With increasing realization that particles in the air are a major health risk in urban areas, strengthening particle deposition is discussed as a mean to air-pollution mitigation. Particles are deposited physically on leaves and thus the process depends on leaf area and surface properties, which change throughout the year. Current state-of-the-art modeling accounts for these changes only by altering leaf longevity, which may be selected by vegetation type and geographic location. Particle removal also depends on weather conditions, which determine deposition and resuspension but generally do not consider properties that are specific to species or plant type. In this study, we estimated <2.5-µm-diameter particulate-matter (PM2.5) deposition, resuspension, and removal from urban trees along a latitudinal gradient (Berlin, Munich, Rome) while comparing coniferous with broadleaf (deciduous and evergreen) tree types. Accordingly, we re-implemented the removal functionality from the i-Tree Eco model, investigated the uncertainty connected with parameterizations, and evaluated the efficiency of pollution mitigation depending on city conditions. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000117676
Veröffentlicht am 12.03.2020
DOI: 10.3389/ffgc.2020.00026
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 12.03.2020
Sprache Englisch
Identifikator ISSN: 2624-893X
KITopen-ID: 1000117676
HGF-Programm 12.02.04 (POF III, LK 01) Urban-Rural Interactions
Erschienen in Frontiers in forests and global change
Verlag Frontiers Media
Band 3
Heft 26
Schlagwörter air quality; model evaluation; urban trees; deposition velocity
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