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Showing posts from January, 2024

ONAT, Ordre National des Architectes du Togo, enfin le numéro 202!

After 11 years of patient work and dedication, I have finally joined the small family of accredited Architects in my home country, Togo. On the last Thursday, January 11, 2024, the 3 rd episode of the yearly event, ONAT à la Rencontre du Togo (ORT-3) , was specially featured with the swearing-in of eleven Architects as new members of the National Order of Architects of Togo, ONAT. Among them, I am fortunate to take, on the national board of accredited Architects, the number 202 , which I subjectively appreciate for its beautiful symmetry. During the three-day event (January 10 - 12, 2024),  ONAT made a memorable encounter with the people of Sokoke, Chef-lieu city of the Central region. From open conferences and physical activities to meal-sharing and tourism, national government officials, local authorities, members of ONAT, as well as architects from brother countries (Ghana, Burkina-Faso, Côte d’Ivoire, Cameroun, Guinée-Bissau, Democratic Republic of Cong), and the local people...

Spatial and seasonal differences between near surface air temperature and land surface temperature for Urban Heat Island effect assessment

Abstract: In the context of global warming, urban thermal environments are a growing concern. Previous studies focused on Urban Heat Island effect and global warming mitigation amplitude with Land Surface Temperature (LST), ignoring the interaction of LST and Surface Air Temperature (SAT), which comprehensively affects pedestrian thermal comfort. This study examines the SAT-LST relationship to reduce the uncertainty about SAT prediction based on LST. Utilizing data from 280 air temperature sensors and Landsat satellite remote sensing, we quantified temporal and spatial variations between SAT and LST in Changsha (under a monsoon climate). Analyzing data from 2018 to 2022, the study found that: 1) There are spatiotemporal differences in the SAT-LST relationship, with strong spatial heterogeneity, notably in urban areas and during the summer; 2) A stronger correlation between SAT and LST in winter (R2 = 0.916, RMSE = 1.242 °C) than in summer (R2 = 0.500, RMSE = 1.517 °C); 3) UHI and S...