Modelagem Espacial Da Ilha De Calor Urbana Em Presidente Prudente (Sp) – Brasil

Amorim, Margarete Cristiane de Costa Trindade; Dubreuil, Vincent; Cardoso, Renata dos Santos

doi:10.5380/abclima.v16i0.40585

Cited by 29 publications

(43 citation statements)

References 4 publications

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“…Nevertheless, a different pattern has been identified throughout small-and medium-sized cities in Brazil, where neighborhoods far from the urban core show higher temperatures [18,23,[54][55][56]. Surface heterogeneities are associated with the formation of one or more heat islands that are not necessarily located in the old core.…”

Section: Urban Morphology Land Cover and Uhi Magnitudementioning

confidence: 99%

“…Heat islands are defined by easily measurable parameters, and various studies on urban climate have reported UHIs in Brazil [18,23,24,[26][27][28][29]. Typically, air temperatures are measured using either thermometers via mobile surveys or a stationary network of sensors.…”

Section: Measuring Uhis In Small-and Mid-sized Citiesmentioning

confidence: 99%

“…When using automobiles during this type of surveys, the sensors can be placed on top of the cars or attached to the side of the vehicle,~1.8 m above the ground, to minimize the effect of the engine heat on the measured temperatures. The recommended average vehicle speed is 30 km h −1 , and traverses are conducted a few hours after sunset, on evenings with light winds and clear sky because, then, micro and local climate differences are maximized [18,[32][33][34][35].…”

Section: Measuring Uhis In Small-and Mid-sized Citiesmentioning

confidence: 99%

“…Heat islands are strongly related to the size and morphology of urban areas [17], however, even in small cities that are neither polluted nor have excessive verticalization, UHIs are associated with thermal and hygrometric discomfort because of the rise in temperature [18]. Gartland ([19], p.11) points out that not only do heat islands cause minor additional discomfort, but also the higher temperature and lack of shading and the consequent increase in air pollution increase the mortality rates and affect the population health.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Urban Heat Islands in Small- and Mid-Sized Cities in Brazil

Cardoso

Dorigon

Teixeira

et al. 2017

Climate

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Urban heat islands (UHIs) in large cities and different climatic regions have been thoroughly studied; however, their effects are becoming a common concern in smaller cities as well. We assessed UHIs in three tropical cities, analyzing how synoptic conditions, urban morphology, and land cover affect the heat island magnitude. Data gathering involved mobile surveys across Paranavaí (Paraná), Rancharia (São Paulo), and Presidente Prudente (São Paulo), Brazil, during summer evenings (December 2013-January 2014). Temperature data collected over five days in each city point to heat islands with magnitudes up to 6 • C, under calm synoptic conditions, whereas summer average UHI magnitudes peak at 3.7 • C. In addition, UHI magnitudes were higher in areas with closely spaced buildings and few or no trees and building materials that are not appropriate for the region's climate and thermal comfort.

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Section: Urban Morphology Land Cover and Uhi Magnitudementioning

confidence: 99%

Section: Measuring Uhis In Small-and Mid-sized Citiesmentioning

confidence: 99%

Section: Measuring Uhis In Small-and Mid-sized Citiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of Urban Heat Islands in Small- and Mid-Sized Cities in Brazil

Cardoso

Dorigon

Teixeira

et al. 2017

Climate

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“…Thus, the route was chosen based on topography and soil cover diversity (Figure 1). Heat islands are well-defined at evening hours (Amorim et al, 2015). Thus, measurements were taken at 20h (local time) on the 15th, 20th and 21st of August, 2012 (winter) and on the 26th, 27th and 28th of February, 2013 (summer).…”

Section: Meteorological Data Collectionmentioning

confidence: 99%

Mobile transect for identification of intra-urban heat islands in Uberlandia, Brazil

Silva¹,

Silva²,

Almeida³

et al. 2018

Rev. ambiente água

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The "heat island" phenomenon is one of many serious problems caused by rapid urban growth. This study therefore sought to characterize and quantify heat islands in Uberlandia, to evaluate the seasonality of these islands (winter-summer) and to identify the effect of surface coverage on their intensity. To identify intra-urban heat islands in Uberlandia, air temperature data were collected in two seasons (winter and summer) using mobile and fixed transects seasons. Transition measurements were recorded automatically every 0.5 seconds using a carmounted thermos-hygrometer moving at an average of 40 km h -1 . GPS was used to select approximately ten data points every 500 meters of each transect. Fixed weather stations measured air temperature at three sites in the region. Transect data analysis showed that the intra-urban heat islands were more intense in winter (ΔT = 2.2ºC) than in summer (ΔT = 1.2ºC) mainly because by reduction in atmospheric vapor in winter (dry season) and by higher rate of radiative cooling that is favored in permeable areas. The methodology used in the present study proved to be a quick and efficient way to carry out this type of monitoring.Keywords: air temperature, urban heat island, winter.Transecto móvel para identificação de ilha de calor intra-urbana em Uberlândia, Brasil RESUMO O fenômeno da ilha do calor é um dos muitos problemas graves causados pelo rápido crescimento urbano. Assim, os objetivos deste estudo foram: caracterizar e quantificar ilhas de calor em Uberlândia, avaliar a sazonalidade destas ilhas (inverno-verão) e identificar o efeito da cobertura superficial na intensidade das mesmas. Para identificar as ilhas de calor intraurbanas em Uberlândia, os dados de temperatura do ar foram coletados em duas estações (inverno e verão) usando transectos móveis e estações climáticas fixas. As medidas de transição foram gravadas automaticamente a cada 0,5 segundos usando um termo-higrometro montado em carro movendo-se a uma média de 40 km h -1 . O GPS foi usado para selecionar aproximadamente dez pontos de dados a cada 500 metros de cada transecto. As estações meteorológicas fixas mediram a temperatura do ar em três locais da região. A análise dos dados mostrou que as ilhas de calor intra-urbana em Uberlândia foram mais intensas no inverno (ΔT = 2,2ºC) que no verão (ΔT = 1,2ºC) devido principalmente à redução no vapor de água atmosférico no inverno (estação seca) e pela taxa de resfriamento radiativo maior nas áreas permeáveis. A metodologia utilizada no presente estudo mostrou ser uma maneira rápida e eficiente de realizar esse tipo de monitoramento.Palavras-chave: ilha de calor urbano, inverno, temperatura do ar.

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Spatial modeling of an urban Brazilian heat island in a tropical continental climate

Dorigon

Amorim

2019

Urban Climate

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Modelagem Espacial Da Ilha De Calor Urbana Em Presidente Prudente (Sp) – Brasil

Cited by 29 publications

References 4 publications

Assessment of Urban Heat Islands in Small- and Mid-Sized Cities in Brazil

Assessment of Urban Heat Islands in Small- and Mid-Sized Cities in Brazil

Mobile transect for identification of intra-urban heat islands in Uberlandia, Brazil

Spatial modeling of an urban Brazilian heat island in a tropical continental climate

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