Air pollution removal with urban greenery – Introducing the Vegetation Impact Dynamic Assessment model (VIDA)

作者：Malin Gustafsson, Jenny Lindén, Emelie M.M. Johansson, Ågot K. Watne, Håkan Pleijel · 发表于：Atmospheric Environment · 年份：2024 · DOI：10.1016/j.atmosenv.2024.120397 · 被引用次数：15 · 研究领域：Urban Green Space and Health、Urban Heat Island Mitigation、Land Use and Ecosystem Services

Urban greenery is identified as a potential tool in air pollution mitigation. However, the impact is still debated. This paper introduces the innovative VIDA (Vegetation Impact Dynamic Assessment) model, specifically designed to quantify air pollution removal through deposition on vegetation. The VIDA model offers an advanced representation of vegetation that could be integrated into urban air quality dispersion models in the future. Furthermore, the model serves as a valuable tool for exploring the intricate interactions among deposition, resuspension, and wash-off processes, as well as understanding how meteorological conditions and various leaf traits influence these processes. The current version of the model focuses on particulate matter (PM) and encompasses a range of processes, including deposition on vegetation surfaces, encapsulation within the waxy cuticle, wind-driven resuspension, and wash-off. Additionally, the model takes into consideration dynamic changes in PM concentrations on the leaf surface over time, incorporating factors such as PM size fractions, meteorological conditions, and leaf characteristics. This comprehensive approach allows for the evaluation of various species or species groups based on their distinct traits. The VIDA model effectively reproduces measured data, yet continued evaluation remains crucial as new data emerges. Notably, challenges are encountered due to data scarcity and the absence of standardized methods for characterizing vegetat...