Carbon and water exchange of green building envelopes: Observation and process-based modelling with application at the urban scale

绿色建筑围护结构的碳和水交换：观察和基于过程的建模及其在城市规模的应用

• 批准号: 505703010
• 负责人: Professor Dr. Stephan Weber
• 金额: --
• 依托单位: Institut für Geoökologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/505703010?language=en
• 关键词: Carbon; water; exchange; green; building

Increasing the amount of urban vegetation is encouraged as an adaptation strategy to counter-measure climate change mainly due to (1) its potential to sequester CO2 from the atmosphere and to (2) enhance evaporative cooling and positively influence the water cycle in cities. The greening of buildings, that is the implementation of vegetated envelopes on roofs and walls, may contribute to an important part of the urban green infrastructure. However, the carbon sequestration potential of green building envelopes is one of the ecosystem services that has the least been studied due to complexity or lack of data. GREENVELOPES aims at filling this research gap by conducting an in-depth observation and process-based modelling study of building green envelopes to better understand their capacity to exchange carbon and water with the urban atmosphere.The research objectives will be addressed by state-of-the-art observations of micrometeorological fluxes and leaf-level measurements at a green roof and green wall site, covering different weather conditions during a two-year period. This is to be complemented by improving an established urban energy balance model so that it accounts for carbon and water exchanges of building green envelopes with the urban atmosphere. Upscaling these exchange processes to the urban scale by the numerical modelling of two application cities, Toulouse (France) and Berlin (Germany), will allow us to quantify and assess the impact of both types of green envelopes on carbon sequestration and evaporative cooling potential in relation to other types of urban vegetation.

鼓励增加城市植被数量作为应对气候变化的适应策略，主要是因为（1）其从大气中吸收二氧化碳的潜力，以及（2）增强蒸发冷却并对城市的水循环产生积极影响。建筑物绿化，即在屋顶和墙壁上实施植被围护，可能有助于城市绿色基础设施的重要组成部分。然而，由于复杂性或缺乏数据，绿色建筑围护结构的碳封存潜力是研究最少的生态系统服务之一。 GREENVELOPES 旨在通过对建筑绿色围护结构进行深入观察和基于过程的建模研究来填补这一研究空白，以更好地了解其与城市大气交换碳和水的能力。研究目标将通过现状来解决对绿色屋顶和绿色墙现场的微气象通量和叶面测量进行最先进的观测，涵盖两年内的不同天气条件。这还需要改进现有的城市能源平衡模型，使其能够考虑建筑绿色围护结构与城市大气的碳和水交换。通过对图卢兹（法国）和柏林（德国）这两个应用城市的数值建模，将这些交换过程升级到城市规模，这将使我们能够量化和评估两种类型的绿色围护结构对碳封存和蒸发冷却潜力的影响。与其他类型的城市植被的关系。