Built environment dynamics, atmospheric circulations, and geographical context shaping urban microclimates: Mobile observational insights from Athens's complex basin, Greece

IF 6.9 2区 工程技术 Q1 ENVIRONMENTAL SCIENCES
Christos Giannaros , Katerina Papagiannaki , Petros Kyriakou , Ilias Agathangelidis , Vasileios Vafeiadis , Antonis Bezes , Vassiliki Kotroni , Konstantinos Lagouvardos
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引用次数: 0

Abstract

The fine-scale variability of urban microclimates plays a critical role in shaping heat stress vulnerability and informing targeted mitigation responses. The present study aims to advance understanding of how urban form and function, atmospheric circulations, and geographical features influence this variability by assessing intra-urban heat and moisture patterns in Athens, Greece—a Mediterranean coastal city with complex topography—using mobile observations, collected during a summer 2024 heat wave day, and a multiple linear regression modeling framework. This analytical approach incorporated five urban morphological and functional predictors, along with two landscape variables, while it used vapor pressure as the humidity-related dependent variable, offering a more physically consistent and thermo-physiologically relevant indicator of atmospheric moisture. Results revealed a dominant modulation by heat wave-amplified sea breeze dynamics during the early afternoon, contributing to spatial confounding effects and reducing the influence of urban structural and functional attributes. Notably, West Athens—a socially vulnerable and heat-exposed area—demonstrated enhanced daytime cooling potential due to more open building arrangements, although elevated water vapor content may counteract perceived heat stress relief. At early nighttime, cooling in vegetated urban areas became more evident, with the role of built environment dynamics becoming increasingly apparent and varying by location and Local Climate Zone context. These findings can support climate-just urban planning and guide future relevant research.
建筑环境动力学、大气环流和地理环境塑造城市小气候:来自希腊雅典复杂盆地的移动观测见解
城市小气候的细微尺度变异性在形成热应激脆弱性和为有针对性的缓解措施提供信息方面发挥着关键作用。本研究旨在通过利用2024年夏季热浪日收集的移动观测数据和多元线性回归建模框架,评估希腊雅典(一个地形复杂的地中海沿海城市)的城市内部热量和水分模式,从而促进对城市形式和功能、大气环流和地理特征如何影响这种变化的理解。这种分析方法结合了五个城市形态和功能预测因子,以及两个景观变量,同时它使用蒸汽压作为湿度相关的因变量,提供了一个更物理一致和热生理相关的大气湿度指标。结果表明,午后早些时候,热浪放大的海风动力主导了城市的空间混淆效应,降低了城市结构和功能属性的影响。值得注意的是,西雅典——一个社会脆弱和热暴露的地区——由于更开放的建筑安排,展示了增强的日间冷却潜力,尽管升高的水蒸气含量可能抵消了热应力的缓解。在夜间早期,城市植被地区的降温变得更加明显,建筑环境动力学的作用变得越来越明显,并且随着地点和当地气候区背景的不同而变化。这些发现可以为气候公正的城市规划提供支持,并指导未来的相关研究。
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来源期刊
Urban Climate
Urban Climate Social Sciences-Urban Studies
CiteScore
9.70
自引率
9.40%
发文量
286
期刊介绍: Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following: Urban meteorology and climate[...] Urban environmental pollution[...] Adaptation to global change[...] Urban economic and social issues[...] Research Approaches[...]
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