Urban heat island analysis in Blora Regency using multispectral images from 2013 to 2022

UHI is the increasing surface temperature higher than the surrounding area: high temperatures and low vegetation cause the high UHI. Blora geographically has conditions that often experience severe drought and has very high drought with temperatures >40oC. Based on the above conditions, this stud...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2025-01, Vol.1438 (1), p.12041
Main Authors: Mulyani, S., Sunariya, M. I. T., Anggani, N. L., Raharjanto, B.
Format: Article
Language:English
Subjects:
Drought
High temperature
Land surface temperature
Landsat
Remote sensing
Satellite imagery
Surface temperature
Temperature
Temperature distribution
Urban heat islands
Vegetation
Vegetation index
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Summary:UHI is the increasing surface temperature higher than the surrounding area: high temperatures and low vegetation cause the high UHI. Blora geographically has conditions that often experience severe drought and has very high drought with temperatures >40oC. Based on the above conditions, this study aims to determine the relationship between vegetation index and surface temperature to UHI. After obtaining multitemporal Landsat 9 OLI and Landsat 8 OLI image data from 4 different years spanning three years, NDVI was analysed with LST to produce UHI and a moment product correlation to determine the relationship between NDVI and LST. The results of this study found that the value of the vegetation index decreased in 2019 to the temperature distribution, which also experienced anomalous increases in 2019 compared to the previous year. In correlation, the NDVI value is inversely proportional to LST. The coefficient of determination from 2013 was r2 = 98%, 2016 was r2 = 99%, 2019 was r2 = 80%, and 2022 was r2 = 98%. The quadratic coefficient of determination above shows that the range of years has a perfect relationship (r2).
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/1438/1/012041