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The role of rapid urbanization in surface warming over eastern China

机译：快速城市化在中国东部地表暖化中的作用

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摘要

Using satellite imaging of the Earth at night, we quantitatively assess the rapid growth of urban areas and investigate its impact on long-term surface warming at 214 medium and large cities over eastern China. Urban growth intensity is measured using the size of the area experiencing fast night-time light increase and the distance to temperature-observation sites. Surface warming, related closely to city size, also exhibits a strong association with urban growth. A rapid increase of surface temperature is observed mainly for cities undergoing rapid urbanization (RU). Such a relation is evident over Central, South, and Northwest China, but it is weak over Northeast China, implying regional variation of temperature responses to urban growth. Satellite-derived land-surface temperature analysis suggests that cities experiencing RU are more subject to the effects of urban heat island expansion, which explains the variations of warming rate among cities within the same region. These results underscore that surface warming induced by RU might be an important component of urban climate change in eastern China.
机译：我们使用夜间的地球卫星成像技术，定量评估了城市地区的快速增长，并研究了其对中国东部214个大中城市长期地面变暖的影响。城市增长强度是通过夜间光线快速增加的区域大小以及到温度观测点的距离来衡量的。与城市规模密切相关的地表变暖也与城市增长密切相关。观察到主要针对经历快速城市化（RU）的城市，地表温度快速升高。这种关系在中国中部，南部和西北部很明显，但在中国东北部则较弱，这意味着温度对城市增长的响应存在区域差异。卫星衍生的地表温度分析表明，经历过RU的城市更容易受到城市热岛扩张的影响，这解释了同一地区内城市之间变暖率的变化。这些结果表明，RU引起的地表增温可能是中国东部城市气候变化的重要组成部分。

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  • 来源
    《International journal of remote sensing》 |2014年第24期|8295-8308|共14页
  • 作者

    Zhu Xinyue; Chen Guixing; Sha Weiming; Iwasaki Toshiki; Li Weibiao; Wen Zhiping;

  • 作者单位

    Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi 980, Japan;

    Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi 980, Japan;

    Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi 980, Japan;

    Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi 980, Japan;

    Sun Yat Sen Univ, Dept Atmospher Sci, Ctr Monsoon & Environm Res, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, Dept Atmospher Sci, Ctr Monsoon & Environm Res, Guangzhou 510275, Guangdong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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