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Evaluation of urban heat islands using local climate zones and the influence of sea

花匠小妙招
2024-11-08 19:02

The Local Climate Zone (LCZ) scheme is an urban form and land cover/land use classification system used to study urban heat islands (UHIs). Many studies have evaluated the relationship between LCZs and air temperature. While the intensity and spatial pattern of an UHI can be influenced by the land-sea breeze, especially in coastal cities, few studies have been done to examine this using the LCZ scheme. In this study, Sendai, Japan, has been selected as a case study to evaluate whether the LCZ scheme can be used to study UHIs that are exposed to sea-land breeze since it has two urban-rural areas: mountain side and coastal side. UHI analysis was based on LCZ classes with GIS-derived geometric and land cover properties. By dividing Sendai into two regions along its urban center, the mitigating effects of sea-land breeze on the magnitudes of UHIs in each urban-rural area were demonstrated. Based on the results of this study, two specific UHI mitigation strategies were proposed for Sendai. This study confirmed that the LCZ scheme can be used by urban planners to assess both surface UHI (SUHI) and UHI effects, and proposed a feasible process for developing targeted UHI mitigation strategies.

中文翻译：

利用当地气候带评估城市热岛及海陆风的影响

本地气候区（LCZ）计划是一种城市形式和土地覆被/土地利用分类系统，用于研究城市热岛（UHI）。许多研究已经评估了LCZ与空气温度之间的关系。虽然UHI的强度和空间格局会受到陆地-海风的影响，尤其是在沿海城市，但很少有研究使用LCZ方案对此进行研究。在这项研究中，日本仙台市被选为案例研究，以评估LCZ方案是否可用于研究暴露于海风的UHI，因为它有两个城乡地区：山区和沿海地区。UHI分析基于具有GIS衍生的几何和土地覆盖属性的LCZ类。通过将仙台市沿市中心分为两个区域，证明了海陆风对每个城乡地区城市居民健康指数的缓解作用。根据这项研究的结果，针对仙台提出了两种特定的UHI缓解策略。这项研究证实，城市规划者可以使用LCZ方案评估地表UHI（SUHI）和UHI的影响，并提出了制定目标UHI缓解策略的可行过程。