Bài viết nghiên cứu dữ liệu Sentinel - 3 SLSTR để xác định sự đảo nhiệt đô thị ở các quận và huyện thuộc Thành phố Hồ Chí Minh ngày 15/05/2020 so với các khu vực giáp thành phố. Bên cạnh đó, mật độ dân số được tính toán theo kết quả điều tra dân số vào đầu năm 2020. Mối quan hệ tuyến tính thuận giữa giá trị đảo nhiệt đô thị và mật độ dân số được xây dựng với hệ số xác định R2=0,64. Mời các bạn tham khảo! | Journal of Mining and Earth Sciences Vol. 62 Issue 5 2021 67 - 75 67 Relationship between urban heat island and population density of districts in Ho Chi Minh City derived from Sentinel - 3 SLSTR data Ha Thu Thi Le 1 Trung Van Nguyen 1 Khoa Ngoc Nguyen 2 Phuong Dang Nguyen2 Tuyet Thi Vo 3 Tho Giang Nguyen 4 Tung Van Pham 5 Dinh Van Le 1 1 Faculty of Geomatics and Land Administration Hanoi University of Mining and Geology Vietnam 2 Can Tho Environment and Natural Resources Department Vietnam 3 Ninh Kieu Land Registration Office Vietnam 4 Lam Dong Irrigation - traffic Construction Joint Stock Company Vietnam 5 Ho Chi Minh City University of Natural Resources and Environment Vietnam ARTICLE INFO ABSTRACT Article history The urban heat island occurs due to the causes of the urbanization process Received 15th June 2021 of which the main reason is an increase in population density leading to the Accepted 27h Aug. 2021 changes in artificial objects on the ground surface. Recently using the Split Available online 31st Oct. 2021 - Window algorithm for two thermal infrared spectral channels with Keywords wavelengths of 11 µm and 12 µm to calculate the daily surface temperature Ho Chi Minh City 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 Population density the results and high technical efficiency. This study uses Sentinel - 3 SLSTR Sentinel - 3 SLSTR data to determine urban heat island in the districts of Ho Chi Minh City Urban heat island. 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 . Copyright 2021 Hanoi University of Mining and Geology. All rights reserved. _ Corresponding author E - mail lethithuha@ DOI 5
