Sử dụng dữ liệu ảnh hồng ngoại nhiệt để tính toán nhiệt độ bề mặt phục vụ hoạt động dạy học môn Xử lý ảnh vệ tinh tại Trường Đại học Tài nguyên và Môi trường Hà Nội

Tóm tắt

Surface temperature is a critical variable in many applied calculations, serving as an indicator of the dynamic thermal state resulting from the thermal equilibrium of fluxes between the atmosphere, surface, and subsurface layers. Therefore, studying the spatial distribution of land surface temperature (LST) holds significant importance. This article introduces research findings on the distribution of land surface temperature in the Ha Tinh province region using infrared thermal images captured by LANDSAT 8 during the dry season. The research results indicate that: (i) low temperatures (<28°C) cover an area of 762.45 km2 (12.78% of the total area) distributed in highland areas; (ii) moderate temperatures (28 - 32°C) cover an area of 4426.20 km2 (74.21%), predominantly distributed across the districts; (iii) an area of 775.82 km2 with high temperatures (>34°C) (13.01% of the total area) is concentrated in regions with dynamic population densities and extensive impermeable surfaces. From these research findings, it can be concluded that LANDSAT 8 infrared thermal images facilitate the rapid and effective study of the spatial distribution of LST.