A preliminary study on the local cool-island intensity of Taipei city parks

Chang, Chi-Ru; Li, Ming-Huang; Chang, Shyh-Dean

doi:10.1016/j.landurbplan.2006.09.005

Cited by 477 publications

(318 citation statements)

References 15 publications

(19 reference statements)

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“…Studies reveal that water bodies and wetlands serve as cooling surfaces by absorbing radiation through high thermal capacity and releasing water vapor that cools the ambient environment [8,9]. Vegetation can decrease the near-surface air temperature by utilizing a relatively large proportion of the absorbed radiation in the evapotranspiration process and producing shade as well.…”

Section: Introductionmentioning

confidence: 99%

Assessing the stability of annual temperatures for different urban functional zones

Sun

Chen

et al. 2013

Building and Environment

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a b s t r a c tThe urban functional zone (UFZ) is the basic unit of urban planning, which is defined as an area of similar social and economic functions. Despite the importance of UFZs, the stability of their annual temperature between winter and summer has seldom been investigated. With an understanding of the thermal impacts that planning decisions can have, it is essential to know how UFZs can be designed to regulate temperatures in the urban environment. 690 UFZs were identified using ALOS images in 2009 in Beijing. Land surface temperature (LST) was extracted from daytime Landsat TM (2002) and ASTER (2009) images. The regional LST variation of 31 district-sized sub-regions was correlated to the types of UFZs in the region and structural features of the region such as area, size, diversity, complexity and connectivity. Results showed that: (1) UFZ types, in order from highest to lowest LST variation, were commercial, campus, high density residential, water, recreational, low density residential, road, preservation, and agricultural zones; (2) the regional LST variation was positively correlated with the area of campus, commercial, high density residential, water, and road zones, but negatively correlated with the area of agricultural and low density residential zones; (3) increased connectivity and complexity decreased regional LST variations. The results indicated that the stability of annual temperatures was determined not only by the UFZ type and size but also by the connectivity and complexity. These results are clearly useful and essential pieces of information that can be applied in urban planning to improve climate adaptability.Crown

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Section: Introductionmentioning

confidence: 99%

Assessing the stability of annual temperatures for different urban functional zones

Sun

Chen

et al. 2013

Building and Environment

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“…Sabe-se, por exemplo, que a temperatura das áreas com vegetação tem efeito mais forte no resfriamento no verão do que no inverno (CHANG et al, 2007). Inclusive, a falta de vegetação pode causar a diminuição da temperatura no inverno, devido à facilidade com que os materiais de construção perdem calor para o meio, onde não existem barreiras naturais para detê-lo (AKBARI; TAHA, 1992).…”

Section: Discussionunclassified

Análise Microclimática Das Diferentes Tipologias De Floresta Urbana De Curitiba

Martini

Biondi

Batista

et al. 2017

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ResumoA vegetação é um dos elementos essenciais para garantir a qualidade de vida nas cidades, devido os inúmeros benefícios que proporciona. Esta pesquisa teve como objetivo analisar a variação da temperatura e umidade relativa do ar em diferentes tipologias de florestas urbanas de Curitiba durante o verão e inverno. Para isso, foram selecionadas três áreas de cada tipologia de floresta urbana: Remanescente Florestal, Área Verde Antiga, Área Verde Moderna, Arborização de Rua e Árvore isolada. O microclima dessas áreas foi analisado por meio das variáveis temperatura e umidade relativa do ar, coletadas com registradores data logger modelo Hobo®, instalados em mini abrigos meteorológicos. O monitoramento das variáveis meteorológicas foi realizado simultaneamente em todas as áreas selecionadas, durante 48 horas, com tomada de dados contínuo em intervalos de 1 minuto, iniciando-se às 12h, nos meses de fevereiro e julho. Os resultados indicaram diferença estatística entre o remanescente florestal e as demais tipologias de floresta urbana, para ambas as variáveis e estações do ano. A temperatura média do ar no remanescente florestal foi menor do que nas demais áreas, enquanto a umidade relativa foi maior. Quando comparadas com o remanescente, a tipologia árvore isolada foi a que apresentou maior diferença de temperatura, registrando 1,22 °C a menos, seguida por arborização de rua (1,08°C), área verde antiga (0,98°C) e área verde moderna (0,68 °C). Conclui-se que as diferentes tipologias de floresta urbana apresentam microclimas distintos, sendo que o Remanescente Florestal é o que proporciona valores menores de temperatura e maiores de umidade relativa. Palavras-chave: Vegetação; temperatura do ar; umidade relativa do ar; verão; inverno. AbstractMicroclimate analysis of different types of urban forest in Curitiba city. The vegetation is essential to ensure the quality of life in cities, due to the numerous benefits it provides, especially in climatic aspects. This study aimed to characterize the microclimate of the different types of urban forest existing in Curitiba, PR, in summer and winter. For this, three areas were selected for each type of urban forest: remaining forest, old green area, modern green area, street trees and single tree. The microclimate these areas was analyzed by varying temperature (° C) and relative humidity of air (%), collected by data logger Hobo® model, installed in mini-shelters for 48 hours, with continuous taken at intervals of 1 minutes, starting at 12h, in February and July. The results showed no statistical difference between the remaining forest and other types of urban forest, for both variables and seasons. The average air temperature in the remaining forest was lower than in other areas, while the relative humidity was higher. When compared with the remaining, to single tree was the typology that showed the largest temperature difference (1.22 °C), followed by street trees (1.08 °C), old green area (0.98 °C) and modern green area (0.68 °C). It is concluded that the different type...

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“…Greener cities are cooler cities, and several researchers have attempted to quantify the cooling effect of greenery [69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84]. The temperature difference between the parks and their urban surroundings seems to depend on the size of the parks [71,75,[85][86][87][88][89] and on the design of the park [78,90].…”

Section: Greenery Standardsmentioning

confidence: 99%

“…The temperature difference between the parks and their urban surroundings seems to depend on the size of the parks [71,75,[85][86][87][88][89] and on the design of the park [78,90]. In turn, the cooling distance of the parks, which can range from 15 m [87] to 2000 m [71,85], seems to depend on the temperature difference.…”

Section: Greenery Standardsmentioning

confidence: 99%

Regionalist Principles to Reduce the Urban Heat Island Effect

Icaza

Hoeven

2017

Sustainability

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Scientists, climatologists, and urban planners have started to recognize the importance of nature at two very different scales: the global (metabolic) and the local (liveability) scales. The regional scale is the one at which these macro and micro approaches overlap. Future predictions foresee an increase of more than 2450 million urban inhabitants by 2050, thus new balanced urban visions need to be developed in order to guarantee the sustainability of urban areas. The Urban Heat Island (UHI) effect is a climate phenomenon resulting from unbalanced urban design arrangements. This paper analyses several design principles proposed by the 1920s regionalists from the UHI perspective. The preservation of the regional geographical landmarks, the implementation of urban containment policies (limiting city sizes), the increase of greenery and the development of green multifunctional blocks would help reduce the UHI in future urban developments.

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A preliminary study on the local cool-island intensity of Taipei city parks

Cited by 477 publications

References 15 publications

Assessing the stability of annual temperatures for different urban functional zones

Assessing the stability of annual temperatures for different urban functional zones

Análise Microclimática Das Diferentes Tipologias De Floresta Urbana De Curitiba

Regionalist Principles to Reduce the Urban Heat Island Effect

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