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Climate 2017, 5(4), 91; doi:10.3390/cli5040091

Intensity of Urban Heat Islands in Tropical and Temperate Climates

1
Department of Geography, São Paulo State University (UNESP), 305 Roberto Simonsen Street, Presidente Prudente, São Paulo 19060-900, Brazil
2
Department of Geography, Rennes II University, LETG-Rennes-COSTEL, UMR 6554 CNRS, Place Recteur Henri le Moal, 35000 Rennes, France
*
Author to whom correspondence should be addressed.
Received: 28 October 2017 / Revised: 24 November 2017 / Accepted: 29 November 2017 / Published: 3 December 2017
(This article belongs to the Special Issue Studies and Perspectives of Climatology in Brazil)
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Abstract

Nowadays, most of the Earth’s population lives in urban areas. The replacement of vegetation by buildings and the general soil sealing, associated with human activity, lead to a rise in cities temperature, resulting in the formation of urban heat islands. This article aims to evaluate the intensity and the hourly maintenance of the atmospheric heat islands in two climates: one tropical (Presidente Prudente, Brazil) and one temperate (Rennes, France) throughout 2016. For this, air temperature and hourly averages were measured and calculated using both a HOBO datalogger (U23-002—protected under the same RS3 brand) and weather stations Davis Vantage PRO 2. The daily evolution of the heat islands presented characteristics that varied according to the hours and seasons of the year. For both Rennes and Presidente Prudente, the largest magnitudes occurred overnight, being more greatly expressed in the tropical environment and during the driest months (winter in the tropical city and summer in the temperate one). The variability of synoptic conditions from one month to another also leads to a great heterogeneity of UHI intensity throughout the year. View Full-Text
Keywords: urban climate; urban heat island; tropical city; temperate city urban climate; urban heat island; tropical city; temperate city
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Amorim, M.C.C.T.; Dubreuil, V. Intensity of Urban Heat Islands in Tropical and Temperate Climates. Climate 2017, 5, 91.

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