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首页> 外文期刊>International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences >INTRA-URBAN HEAT ISLAND DETECTION AND TREND CHARACTERIZATION IN METRO MANILA USING SURFACE TEMPERATURES DERIVED FROM MULTI-TEMPORAL LANDSAT DATA
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INTRA-URBAN HEAT ISLAND DETECTION AND TREND CHARACTERIZATION IN METRO MANILA USING SURFACE TEMPERATURES DERIVED FROM MULTI-TEMPORAL LANDSAT DATA

机译：使用多时间LANDSAT数据的表面温度，城市内部热岛检测和趋势特征

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Unprecedented urbanization in Metro Manila has led to the proliferation of the urban heat island (UHI) effect. This is characterized by a prominent difference in the temperatures of the urban and its surrounding rural and less urbanized areas. Temperature differences occur within these UHI’s indicating the existence of intra-urban heat islands (IUHI). UHI’s and IUHI’s are well-documented indicators of urban environmental degradation and therefore puts the population of Metro Manila at risk. In anticipation of these effects, their detection and the characterization of their behaviour through time can contribute to proper urban planning thus mitigating harmful effects. Google Earth Engine was used to retrieve land surface temperatures (LST) from Landsat data from 1997 to 2019 using emissivity estimation. The Local Moran’s I statistic was then used to identify cluster and outlier types (COT). A histogram with 10 bins representing the net COT frequencies per barangay was then used to identify IUHI’s. Annual temperature measurements and COT areas were plotted against time and based on linear-fit trend lines they characterize the study area as to having an annual increase in temperature of roughly 0.18 °C and hotspot area extent of around 0.03 km2, and a decrease in coldspot area extent around 0.01 km2. Hotspots were found to be frequent in the cities of Caloocan, Manila, Pasay, and Quezon while coldspots were found to be frequent in the cities of Caloocan, Las Pi?as, Malabon, Navotas, and Valenzuela. In conclusion, IUHI’s were detected with statistical basis, both spatially and temporally.
机译：Metro Manila的前所未有的城市化导致了城市热岛（UHI）效应的扩散。这的特点是城市及其周围农村和较少城市化地区的温度突出的突出差异。在这些UHI中出现了温度差异，表明城市内部热岛（IUHI）存在。 UHI的和IUHI是城市环境退化的详细指标，因此将马尼拉的人口造成风险。通过预期这些效果，他们的检测和通过时间的行为表征可以有助于适当的城市规划，从而减轻有害影响。 Google地球发动机用于使用发射率估计从1997年至2019年从Landsat数据检索地面温度（LST）。然后，本地莫兰的I统计论用来识别群集和异常值类型（COT）。然后使用具有10个垃圾箱的直方图，其代表每巴兰那的净频率为每巴兰那频率来识别Iuhi。绘制了每年的温度测量和婴儿床地区，并基于线性适合趋势线，它们表征了该研究区域，以在约0.18°C和热点面积约为0.03 km2的温度下的温度增加，以及冷点减少面积范围约为0.01 km2。发现热点在Caloocan，Manila，Pasay和Quezon的城市中经常出现，而在Caloocan，Las Pi的城市被发现频繁出现的冷点？作为Malabon，Navotas和Valenzuela。总之，在空间和时间上，以统计基础检测IUHI。

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