基于DTR的城市热岛强度指数构建与应用——以福州市为例

发布时间：2018-05-17 16:19

  本文选题：城市热岛强度 + DTR　； 参考：《应用基础与工程科学学报》2017年02期

【摘要】：城市热岛强度是城市热岛研究和应用中的一个重要度量指标,但其定量计算一直是一难点.由于中国城市发展基本现状与气象设施条件的制约,目前常用的基于气象站的城乡温差计算法,较难准确客观地计算中国城市的热岛强度.当前卫星热红外数据反演的地表温度已广泛应用于城市热岛的研究中,因此,本文根据温度日较差(DTR)变化趋势分析,通过地表温度遥感影像的剖面数据,构建了基于DTR的城市热岛强度指数(UHII_(DTR)),并将其应用于福州市1989~2013年间的城市热岛强度计算,以定量评价城市热岛强度变化情况.研究表明,新建立的UHII_(DTR)可以客观、准确地反映出福州的城市热岛变化.福州市在1989~2013年间UHII_(DTR)逐渐下降,从1989年的5.22℃下降至2013年的3.01℃,城市热岛效应不断加剧.从UHII_(DTR)的年际变化趋势来看,福州未来的热岛现象仍将进一步加剧.
[Abstract]:The intensity of urban heat island is an important measure index in the research and application of urban heat island, but its quantitative calculation is always a difficulty. Due to the basic status of urban development in China and the restriction of meteorological facilities, it is difficult to calculate the heat island intensity of Chinese cities accurately and objectively by using the method of calculating the urban and rural temperature difference based on meteorological stations at present. At present, the surface temperature retrieved from satellite thermal infrared data has been widely used in the study of urban heat island. Therefore, according to the trend analysis of temperature diurnal temperature difference (DTR), the profile data of remote sensing image of surface temperature are analyzed in this paper. The urban heat island intensity index based on DTR is constructed and applied to the calculation of urban heat island intensity in Fuzhou from 1989 to 2013 in order to quantitatively evaluate the change of urban heat island intensity. The results show that the newly established UHII / DTR can objectively and accurately reflect the change of urban heat island in Fuzhou. From 1989 to 2013, the UHIID DTR decreased gradually, from 5.22 鈩，

本文编号：1902028