5. UTILIZING LANDSAT IMAGERIES TO MONITOR URBAN HEAT ISLANDS IN HANOI, VIETNAM FROM 2009 TO 2021

Tóm tắt

This study found out the patterns of urban heat islands in Hanoi: the heat islands are concentrated as large zones in the high construction density urbans, which are also developed of economy and urbanization; Line forms in suburban areas with medium construction density - where planning is in progress and scatters in the low construction density areas - the slower economic development and urbanization. Duration of 12 years, the total urban heat island area in Hanoi has tripled (from 3.1 % to 9.4 %) and the difference of land surface temperature between the lowest value and highest value also increased significantly from 16.9 °C (2009) to 18.7 °C (2021). The increase of urban heat islands is corresponding with the progress of Hanoi urban planning implementation. The results probably contribute to the decision-making of sustainable urban planning and development in the contemporary context of climate change and rapid urbanization.