FOSS4G-Asia 2023 Seoul

Elevation-wise and direction-wise distribution of Land Surface Temperature in Jeju Island using Landsat Data
11-30, 16:20–16:40 (Asia/Seoul), Seoul Archive

In the present research the land surface temperature (LST) has been calculated from Landsat 8 data of Jeju island to understand the spatial distribution of temperature on island which would be strongly related with ecological characteristics of the island. The dates were selected based on seasons (Winter and Summer) March 12 and September 19, 2020, respectively. Results calculated from thermal band of Landsat 7 revealed the temperature variations in the island. Winter temperature varies from -3.7 to 31 oC degree Celsius while minimum temperature in Summer season was 20.6 and maximum 43.1 degree Celsius. The surface temperature was also calculated on different elevation for both the seasons. It was found that on 100 m elevation, in winter North and South directions have same temperature, comparatively, in Summer the North direction has 0.97 oC higher temperature over South. East direction showed 0.55 oC higher temperature as compared to West in Winter but in Summer season the case was opposite and West has 1.46 oC higher surface temperature from East. Interestingly on 100 m height in Summer, North and West has also same temperature (34.25 oC). In second case, on 500 m height for all four directions the LST was compared and results showed that South has 0.58 and 1.52 oC higher temperature in Winter and Summer season respectively from North. On the contrary, West has 3.33 and 0.5 oC higher temperature over East in Winter and Summer season respectively. It revealed that seasons and altitude have great impact on the LST in different cardinal directions of the island. From the results it can be assumed that the island ecological diversity would be strongly related to the geographical distribution of temperature.

My name is Muhammad Farhan Ul Moazzam, a Ph.D. student at the Department of civil engineering at Jeju National University. Before this, I completed my Masters's degree from Naresuan University, Thailand, and a BS degree in GIS/RS from the University of Peshawar, Pakistan. My research interest revolves around the cryosphere, hydro-meteorological hazards, and urban heat islands.