Spatiotemporal variability of urban heat islandInfluence of urbanization on seasonal pattern of land surface temperature in the Metropolitan Region of Belém, Brazil

Resumo

Cities experience the extensive urban heat island effect (UHI), which continue to pose challenges for humanity's increasingly urban population, where tropical cities have experienced a continued and rapid urbanization process in the past few decades. We present the evolution of surface UHI and its controlling factors in the Metropolitan Region of Belém, over the last 16 years (2003–2018), which has experienced unique consolidated economic growth and urban transformation under wet equatorial climate. We incorporate MODIS and Landsat satellite data and evaluate statistical techniques for estimates the variation in the land surface temperature (LST) during two seasons: wet season and dry season. Our result revealed that the regions of fast urbanization resulted in a decrease of normalized difference vegetation index and increase of LST. In addition, annual maps showed the spatial pattern of surface UHI intensities were produced based on daytime and nighttime temperature, and the analysis result indicated that the spatial distribution of high heat capacity was closely related with the densely built-up areas. These findings are helpful for understanding the urbanization process as well as urban ecology, which both have significant implications for urban planning and minimize the potential environmental impacts of urbanization in Metropolitan Region of Belém.

Ficha do documento

Tipo

Artigo científico

Ano

2021

Instituição

Pontifícia Universidade Católica do Paraná - PUCPR

Fonte

urbe — Revista Brasileira de Gestão Urbana

Idioma

Português

Acesso

Não informado

Identificador

oai:ojs.periodicos.pucpr.br:article/27670

Temas

Planejamento UrbanoMeio Ambiente

Palavras-chave

Urban heat island. Urban growth. Land surface temperature. Remote sensing. Amazonia.