The summer surface urban heat island of Bucharest (Romania) retrieved from MODIS images
The summer surface urban heat island of Bucharest (Romania) retrieved from MODIS images
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DOI：
10.1007/s00704-014-1250-8
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发表时间：
2015-08-01
影响因子：
3.4
通讯作者：
Dumitrescu, Alexandru
中科院分区：
文献类型：
--
作者：
Cheval, Sorin;Dumitrescu, Alexandru
对罗马尼亚布加勒斯特市夏季地表城市热岛(SUHI)的形状、强度、范围和与土地覆盖的联系进行了调查。这项研究使用了2000年至2012年期间由Terra(EOS AM-1)和Aqua(EOS PM-1)NASA卫星上的中分辨率成像光谱仪(MODIS)传感器提取的陆地表面温度(LST)数据。基于Rodionov体制转换指数，将横穿市中心的地表温度的显著变化点作为SUHI的界限。SUHI和周围几个缓冲器之间的热差决定了SUHI的强度。夜间SuHI的几何形状较规则，强度略低于白天，而地面覆盖对布加勒斯特LST的影响较大。综上所述，本研究提出了一种基于城市区域与周围环境之间转移的统计意义来界定和量化平均超重指数的方法，并指出了该方法的局限性。
The summer surface urban heat island (SUHI) of the city of Bucharest (Romania) is investigated in terms of its shape, intensity, extension and links to land cover. The study employs land surface temperature (LST) data retrieved by the Moderate Resolution Imaging Spectroradiometer (MODIS) sensors aboard the Terra (EOS AM-1) and Aqua (EOS PM-1) NASA satellites, between 2000 and 2012. Based on the Rodionov regime shift index, the significant changing points in the land surface temperature values along transverse profiles crossing the city's centre were considered as SUHI's limits. The thermal difference between the SUHI and several surrounding buffers defines the SUHI's intensity. The night-time SUHI's geometry is more regular, and its intensity is slightly lower than during the day, while the land cover exerts a strong influence on Bucharest's LST. In summary, the study proposes a methodology to delimit and quantify the average SUHI based on the statistical significance of the shift between the urban area and its surroundings, and the limitations of the method are mentioned.