Relationship between urban heat island and population density of districts in Ho Chi Minh City derived from Sentinel - 3 SLSTR data
- Authors: Ha Thu Thi Le 1*, Trung Van Nguyen 1, Khoa Ngoc Nguyen 2, Phuong Dang Nguyen 2, Tuyet Thi Vo 3, Tho Giang Nguyen 4, Tung Van Pham 5, Dinh Van Le 1
1 Hanoi University of Mining and Geology, Hanoi, Vietnam
2 Can Tho Environment and Natural Resources Department, Can Tho, Vietnam
3 Ninh Kieu land registration office, Can Tho, Vietnam
4 Lam Dong Irrigation - traffic Construction Joint Stock Company, Lam Dong, Vietnam
5 Ho Chi Minh City University of Natural Resources and Environment, Ho Chi Minh City, Vietnam
- Received: 2nd-June-2021
- Revised: 27th-Aug-2021
- Accepted: 30th-Sept-2021
- Online: 31st-Oct-2021
- Section: Geomatics and Land Administration
The urban heat island occurs due to the causes of the urbanization process, of which the main reason is an increase in population density leading to the changes in artificial objects on the ground surface. Recently, using the Split - Window algorithm for two thermal infrared spectral channels with wavelengths of 11 µm and 12 µm to calculate the daily surface temperature with two times of day and night serves to determine the change of land surface temperature. This method is intended to improve the reliability of the results and high technical efficiency. This study uses Sentinel - 3 SLSTR data to determine urban heat island in the districts of Ho Chi Minh City compared to areas bordering the city on May 15th 2020. In addition, population density is calculated according to the results of the census in 2020. The linear relationship between the urban heat island and population density was built with the coefficient of determination R2=0.64.
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