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Temporal dynamics of urban heat island correlated with the socio-economic development over the past half-century in Seoul, Korea

机译:城市热岛的时间动态与过去半个世纪的社会经济发展在韩国首尔的社会经济发展相关联

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摘要

Urban heat island (UHI), an iconic consequence of anthropogenic activities and climate condition, affects air pollution, energy use, and health. Therefore, better understanding of the temporal dynamics of UHI is required for sustainable urban planning to mitigate air pollution under a changing climate. Here, we present the evolution of UHI intensity (UHIi) and its controlling factors in the Seoul metropolitan area, Korea, over the last 56 years (1962-2017), which has experienced unique compressed economic growth and urban transformation under monsoon climate. The analysis demonstrated an inverted U-shape long-term variation of UHIi with the progress of urban transformation and economic climate which has not been reported in Asian cities before. Meanwhile, short-term variations in UHIi are related to both diurnal temperature range and duration after rainfall event unlike previous studies, and the UHIi was exacerbated by heat waves. Our findings suggest that the UHIi will exhibit different temporal dynamics with future changes in the monsoon climate, and heat waves in the urban area will be reinforced if current rapid urbanization continues without a shift toward sustainable and equitable development. Asian cities that are likely to face the similar urbanization trajectory and the implications are that urban (re) development strategy considers changes in rainfall magnitude and timing due to monsoon system variation under changing climate and plans to mitigate synergy between heat wave and UHI in this area. (C) 2019 The Authors. Published by Elsevier Ltd.
机译:城市热岛(UHI),人为活动和气候条件的标志性后果,影响了空气污染,能源使用和健康。因此,可持续城市规划需要更好地了解UHI的时间动态,以减轻变化气候的空气污染。在这里,我们在过去的56年(1962-2017)中,韩国首尔大都市地区的UHI强度(UHII)的演变及其控制因素,在季风气候中经历了独特的压缩经济增长和城市转型。该分析显示了UHII的倒U形长期变化,随着城市的进展和经济环境尚未在亚洲城市报告。同时,uhii的短期变化与日间温度范围和持续时间不同于以前的研究,并且通过热波加剧了uhii。我们的调查结果表明,如果目前的快速城市化继续转变为可持续和公平的发展,UHII将在未来的季风气候变化中表现出不同的时间动态,并加强了城市地区的热浪。可能面临着相似的城市化轨迹的亚洲城市以及含义的含义是,城市(重新)发展战略考虑因季风系统变异而导致的季风系统变化因变化而改变了气候,并计划在该地区的热浪和UHI之间减轻协同作用。 (c)2019年作者。 elsevier有限公司出版

著录项

  • 来源
    《Environmental Pollution》 |2019年第1期|112934.1-112934.9|共9页
  • 作者单位

    Yonsei Univ Dept Atmospher Sci Ecosyst Atmosphere Proc Lab Yonsei Ro 50 Seoul 03722 South Korea;

    Yonsei Univ Dept Atmospher Sci Ecosyst Atmosphere Proc Lab Yonsei Ro 50 Seoul 03722 South Korea;

    Sejong Univ Dept Environm & Energy Seoul South Korea;

    Yonsei Univ Dept Urban Planning & Engn Seoul South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Urban heat island; Heat wave; Seoul; Economic condition; Urban sprawl;

    机译:城市热岛;热浪;首尔;经济条件;城市蔓延;

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