The effect of land use land cover types on MODIS land surface temperature in Ghana.

Autor: Frimpong, Adubofour1 (AUTHOR), Kwabena Forkuo, Eric2 (AUTHOR), Matthew Osei Jnr, Edward2 (AUTHOR)
Zdroj: Cogent Engineering. 2024, Vol. 11 Issue 1, p1-22. 22p.
Abstrakt: In this study we examine the effect of land use land cover (LULC) types on MODIS land surface temperature (LST) in Ghana. The purpose of the research is to explore the relationship between air temperature ( T air ) and LST over LULC types and to identify their association with elevations. Datasets consist of MODIS land cover type-product (MCD12Q1), Shuttle Radar Topography Mission (SRTM) DEM, and composite dataset of 1 km terra MODIS and aqua MODIS 8-day LSTs (MOD11A2 and MYD11A2). The study time period ranged from February 2003 to January 2019. Two categorical steps were employed: (i) Assessment of LST over LULC types based on all pixels. (ii) Assessment of LST over LULC types based on meteorological station locations. Validation of LSTs was done using the air temperature of station records. Seventy station sites across Ghana were selected. The results confirm an estimation of the average T air consisting of T max , T min , and T mean . RMSE, MBE, and MAE were also computed. There was a direct positive correlation between T air and LST over LULC types. ANOVA test method was applied to verify the accuracy of LSTs over LULC types. Croplands have the highest day LST of 39.6 °C whereas evergreen broadleaf forest has the lowest (27.0 °C). The lowest night LST was observed in savannas, grasslands, and croplands with each having 18.6 °C while the highest was water body (23.6 °C). The study revealed that an increase in elevations results in a decrease in LSTs. Also, climatic conditions and specific heat capacities of LULC types had an influence on LST estimates. Public interest statement: This study is aims to analyze the effects of LULC types on land surface temperature in Ghana. It was revealed that LULC types had a noticeable influence on the LST estimates. This study provides practical information for urban planners, natural resources managers, environmental experts, extension officers, and farmers to manage natural landscapes to be sustainable and healthy. [ABSTRACT FROM AUTHOR]
Databáze: Library, Information Science & Technology Abstracts
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje