Geography

Document Type

Article

Abstract

Introduction: Climate change is expected to exacerbate the Urban Heat Island (UHI) effect in the coming decades by altering the structure and function of urban ecosystems and impacting human health. Methods: This research assesses the dynamics of the UHI effect in the city of Córdoba, Argentina, by analyzing temperature trends over the past 19 years. Urban areas were classified into five classes using satellite imagery. Monthly average daytime and nighttime MODIS Land Surface Temperature (LST) were used to assess thermal differences across urban classes and temporal trends. Results: Daytime urban cooling occurred during the winter and heating during the summer, while at nighttime, the city experienced heating year-round. Over 19 years, urban areas presented the highest significant increase in temperature during nighttime, with some areas also experiencing increases during both day and night. Shrublands and crops also showed an increase in LST, particularly during nighttime. Increasing trends in LST during the night overlap with 89.2 % of the population, 90.5 % of households, and 87 % of households with unsatisfied basic needs. Discussion: The population of the city of Córdoba is highly exposed to the UHI, and the exposure is intensifying, potentially leading to heat-related diseases, spreading disease vectors such as mosquitoes, increasing energy and water consumption, and decreasing the overall quality of life for city dwellers. © 2025 The Authors. Published by Elsevier Masson SAS.

Publication Title

Journal of Climate Change and Health

Publication Date

2025

Volume

26

ISSN

2667-2782

DOI

10.1016/j.joclim.2025.100599

Keywords

Córdoba, Land surface temperature (LST), land use, MODIS, urban heat island, urbanization

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Geography Commons

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