URBAN HEAT ISLAND AND LAND COVER DIVERSITY IN THE CITY OF RECIFE/PE BRASIL

Ayobami Moreira (1) , C Zamparoni (2) , R.S. Nobrega (1) , Vincent Dubreuil (3)

1 UFPE - Universidade Federal de Pernambuco [Recife]
2 UFMT - Universidade Federal de Mato Grosso
3 LETG - Rennes - Littoral, Environnement, Télédétection, Géomatique

This study analyzed the Urban Heat Island (UHI) according to different land use patterns in the city of Recife-PE. Seven thermo-hygrometers were installed in different locations to collect temperature and humidity data along the year of 2018 with a 30-minutes interval. The landscapes of the installation sites ranged from sparsely horizontal and well-vegetated to densely populated areas. A meteorological automatic station was considered as the rural reference station. Hourly and monthly average UHI were calculated for the year 2018. The highest UHI intensity was recorded near the sea with an average temperature gradient of 3.9°C at 5 a.m. in August. The results showed that the magnitude of the average UHI in Recife varies between medium (2.0 to 3.0 degrees) and weak (up to 2.0 degrees) presenting its greatest intensity at night, between 6:00 p.m. and 6:00 a.m., from the months of May to August. The proximity to the sea both favored the formation of a freshness island during the day and intensified the heat island during the night on the coastline, due to the combination of the thermal characteristics of the surface materials and the higher temperature of the sea surface.

Mots clés: Recife; urban climate; urban heat island; Brazil

Domaines: Géographie; Sciences de l'environnement

Ayobami Moreira, C Zamparoni, R.S. Nobrega, Vincent Dubreuil. URBAN HEAT ISLAND AND LAND COVER DIVERSITY IN THE CITY OF RECIFE/PE BRASIL. 33ème colloque annuel de l'Association Internationale de Climatologie, Jul 2020, Rennes, France. pp.487-492. ⟨halshs-03626366⟩