Urbanization often entails a surge in urban temperature compared to the rural surroundings: the Urban Heat Island (UHI) effect. Such a temperature increase triggers the formation of pollutants worsening the urban air quality. Jointly, bad air quality and UHI affect ecosystems and human health. To alleviate the impacts on the population and the environment, it is crucial to design effective UHI‐mitigation measures. Life Cycle Assessment (LCA) is an assessment tool able to capture the complexity of urban settlements and quantify their impact. Yet, as currently implemented, LCA neglects the interactions between the built environment and the local climate, omitting the resulting impacts. This study reviews the existing literature, showing the lack of studies that organically include interactions between the built environment and local climate in LCA. This forms the basis to identify the unsuitability of the current LCA framework for comprehensively capturing the impact of urban settlements. To overcome this limitation, this research offers a pathway to expand the LCA methodology, indicating the necessity to (a) couple the LCA methodology with climate models or physical relations that quantify the interactions between the local climate and the built environment; (b) include novel impact categories in LCA to address such interactions; and (c) use existing or ad hoc developed characterization factors to assess the impacts related to the UHI effect. The LCA community can build on the frame of reference offered by this research to overcome the current limitations of LCA and enable its use for a comprehensive assessment of the impacts of UHI and its mitigation measures.

中文翻译：

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城市生命周期评估中的热岛效应：LCA中包含城市热岛效应和UHI缓解措施的新颖见解，可有效制定政策

与农村环境相比，城市化通常会导致城市温度上升：城市热岛效应（UHI）。这样的温度升高会引发污染物的形成，从而使城市空气质量恶化。不良的空气质量和UHI共同影响生态系统和人类健康。为了减轻对人口和环境的影响，设计有效的UHI缓解措施至关重要。生命周期评估（LCA）是一种评估工具，可以捕获城市居住区的复杂性并量化其影响。然而，按照目前的实施，LCA忽略了建筑环境与当地气候之间的相互作用，从而忽略了由此带来的影响。这项研究回顾了现有文献，显示出缺乏有机地包括LCA中建筑环境与当地气候之间相互作用的研究。这构成了识别当前LCA框架不适合全面捕获城市住区影响的基础。为了克服这一局限性，本研究提供了一条扩展LCA方法的途径，表明有必要（a）将LCA方法与量化局部气候和建筑环境之间相互作用的气候模型或物理关系相结合；（b）在LCA中包括新颖的影响类别，以解决此类相互作用；和（c）使用现有的或 指出有必要（a）将LCA方法与气候模型或物理关系相结合，以量化当地气候与建筑环境之间的相互作用；（b）在LCA中包括新颖的影响类别，以解决此类相互作用；和（c）使用现有的或 指出有必要（a）将LCA方法与气候模型或物理关系相结合，以量化当地气候与建筑环境之间的相互作用；（b）在LCA中包括新颖的影响类别，以解决此类相互作用；和（c）使用现有的或临时开发了表征因子，以评估与UHI效应相关的影响。LCA社区可以在本研究提供的参考框架的基础上克服LCA的当前局限性，并使其可用于全面评估UHI的影响及其缓解措施。