红外技术, 2019, 41 (1): 84, 网络出版: 2019-03-23  

城市街区尺度地表热环境遥感监测与分析

Remote Sensing Monitoring and Analysis of Surface Thermal Environment at City District Scale
作者单位
1 南京信息工程大学遥感与测绘工程学院, 江苏南京 210044
2 中国科学院太空应用重点实验室, 中国科学院空间应用工程与技术中心, 北京 100094
摘要
近年来对城市热环境的研究大多集中在大尺度或城市区域尺度上, 基于街区尺度的热环境研究较少。本研究基于高空间分辨率的天宫一号热红外数据, 利用 JM&S(Jim.nez-Mu.oz & Sobrino)算法反演了南京部分地区地表温度, 进而揭示了南京地区夜间地表热环境空间分布规律并分析了其与地表覆盖类型的关系, 探讨了不同街区夜间地表温度的差异。研究结果表明, 天宫一号具有热异常检测能力, 能较好地体现街区尺度地表温度的空间异质性; 南京夜间存在明显的城市热岛效应, 热岛强度为 2.6 K, 局部热岛效应较为突出; 受土地覆盖类型、人口、建筑等因素的影响, 不同街区地表温度差异较为明显。
Abstract
Research on urban thermal environments is mostly focused on large or urban area scales; research on district-scale urban environments is inadequate. In this study, the high-spatial-resolution thermal infrared domain data from the Tiangong-1 satellite was used to retrieve the land surface temperature (LST) of areas in Nanjing based on the JM&S method. The spatial distribution of the land surface thermal environment in Nanjing at night was revealed, and its relationship with the surface cover was analyzed. The difference in LST in different districts at night was observed. Our results show that the high-spatial resolution of Tiangong-1 has thermal anomaly detection abilities, and the heterogeneity of LST is better reflected through it. An obvious urban heat-island effect exists in Nanjing at night with a 2.6 K heat-island intensity. The difference in temperature in different districts is more obvious, which was affected by surface cover, population, and buildings.

石满, 陈健, 吴迪, 覃帮勇, 李盛阳. 城市街区尺度地表热环境遥感监测与分析[J]. 红外技术, 2019, 41(1): 84. SHI Man, CHEN Jian, WU Di, QIN Bangyong, LI Shengyang. Remote Sensing Monitoring and Analysis of Surface Thermal Environment at City District Scale[J]. Infrared Technology, 2019, 41(1): 84.

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