Urban heat island effect based on aerial thermal infrared hyperspectral TASI Data

SUN Xiubo; GUO Changlai; DAI Yajian; LI Xuguang; ZHAO Yan; CUI Jian

2021 Vol. 40, No. 10

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SUN Xiubo, GUO Changlai, DAI Yajian, LI Xuguang, ZHAO Yan, CUI Jian. Urban heat island effect based on aerial thermal infrared hyperspectral TASI Data[J]. Geological Bulletin of China, 2021, 40(10): 1707-1712.

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SUN Xiubo, GUO Changlai, DAI Yajian, LI Xuguang, ZHAO Yan, CUI Jian. Urban heat island effect based on aerial thermal infrared hyperspectral TASI Data[J]. Geological Bulletin of China, 2021, 40(10): 1707-1712.

Urban heat island effect based on aerial thermal infrared hyperspectral TASI Data

Shenyang Center, China Geological Survey, Shenyang 110034, Liaoning, China

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Corresponding author: CUI Jian, spidercj@126.com

Received Date: 07 June 2020

Revised Date: 25 August 2021

Publish Date: 15 October 2021

Abstract

Abstract

The research on the urban heat island effect based on aerial thermal infrared hyperspectral TASI data was conducted. By establishing the empirical relationship of thermal infrared hyperspectral emissivity, the MMD module in the separation method (TES) was improved, and a temperature inversion model for TASI data was established.Using this model, TASI data processing and temperature inversion in the 1500 km² area of Jinzhou City were completed, and the spatial distribution, range and intensity of urban heat islands were studied.The results show that the average absolute error between the inversion temperature and the measured temperature of the TASI data is 0.81 K, and the average relative error is 0.25%. The extracted range of urban thermal anomalies is accurate, which can provide certain decision support for the research of urban heat islands. The intensity of urban heat islands shows a positive correlation with the permeable surface and a negative correlation with the vegetation cover.It has a greater correlation with the type of used land cover. The urban heat island intensity of modern residential and commercial areas is higher than that of urban villages and rural-urban fringe buildings, and the urban heat island intensity of agricultural land is the lowest.
- aviation thermal infrared hyperspectral /
- temperature inversion /
- urban heat island intensity /
- Jinzhou City

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References

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