A fieldwork study on the diurnal changes of urban microclimate in four types of ground cover and urban heat island of Nanjing, China

Liang-mei, Huang; Li, Jianlong; Zhao, Dehua; Zhu, Jiyu

doi:10.1016/j.buildenv.2006.11.025

Cited by 241 publications

(115 citation statements)

References 30 publications

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“…Other causes include increased long-wave radiation from the sky due to city air pollution, decreased long-wave radiation loss because of the reduction of the sky view factor, anthropogenic heat sources, decreased evapotranspiration and decreased total turbulent heat transport due to wind speed reduction caused by canyon geometry [2]. UHIs affect the energy consumption [3] and the health of the cities' inhabitants in terms of thermal comfort [4] and therefore, it is crucial to understand the characteristics of air temperature variation of urban and surrounding areas.…”

Section: Introductionmentioning

confidence: 99%

Spatio-Temporal Trends of Urban Heat Island and Surface Temperature in Izmir, Turkey

Yavaşli¹

2017

AJRS

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Abstract:The distinct characteristics of urban and non-urban land cover usually results with a positive difference in surface temperatures and is referred to as the urban heat island (UHI) phenomenon. This paper assesses the spatio-temporal formation of UHI and land surface temperatures (LSTs) in Izmir, Turkey, situated in a Mediterranean climate region. LSTs were obtained from the Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua and Terra over the period 2000 -2015. UHI intensity was examined using the temperature differences between urban and non-urban areas and non-parametric MannKendall (M-K) test to identify trends in LSTs and UHI intensity. The results indicate that day-time UHI is higher at Izmir with a seasonal variation. M-K test of LSTs shows increasing trends in nighttime temperatures for both urban and non-urban areas especially for winter and spring.

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Section: Introductionmentioning

confidence: 99%

Spatio-Temporal Trends of Urban Heat Island and Surface Temperature in Izmir, Turkey

Yavaşli¹

2017

AJRS

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“…This has been affirmed with different land uses influencing UHI differently as a result of the surface properties (Hung et al, 2006). Huang et al (2008) used four types of land covers in Nanjing (China) namely urban bare concrete cover, urban woods or the shade of trees, urban water areas and urban lawn with their microclimates examined, and the UHI analyzed using air temperature data measured at four fixed observation spots. The results revealed among others that the microclimate of these four types of land covers had significantly different Ngie et al, 2013 Distance from CBD (m) Ngie et al, 2013 Distance from CBD (m) 5,000 4,000 3,000 2,000 1,000 0 Ngie et al, 2013 Distance across CBD (m) 5,000 4,000 3,000 2,000 1,000 0 Ngie et al, 2013 Distance across CBD (m) 5,000 4,000 3,000 2,000 1,000 0 The uniformity of this island profile's shape pattern generally indicates some depressions due to the presence of particular heat points (micro urban heat islands) associated with features such as parking lots, malls, industrial facilities, etc, and some rises due to the presence of particular heat sinks associated with features such as parks, open fields, water bodies, etc (Imhoff et al, 2010).…”

Section: Spatial Distribution Of Lst and Intensity In Durbanmentioning

confidence: 99%

“…It also has an economical impact on the energy usage by local residents. Hence, it may induce unchecked increases in fossil-fuel consumption for cooling and its consequent increases in the anthropogenic carbon dioxide emission, which could contribute to global warming (Huang et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…However, these measurements are usually not true representation of the LST as they are limited in extent to a scale of area (Mirzaei & Haghighat, 2010). Some researchers have tried to cover a larger area by mounting thermometers on a car and driving around a city but this is also challenged by the time factor and labour intensive (Huang et al, 2008). Some of the measurements also get subjective and unreliable.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of quasi periodic signals of X-Ray bursts from neutron star AXP 1E2259+586 using Fourier analysis techniques

Ally¹,

Jiwaji²

2016

RWJour

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Abstract-Population increase within urban environments especially in the developing countries, has posed a need to understand the urban climates. While the importance of urban climates cannot be overemphasized, acquiring knowledge about contributing factors to urban climates can be challenging.Measuring land surface temperatures is one of the ways to acquire such knowledge which could be an uphill task if done manually. However, satellite remote sensing data could be applied to spatially estimate such factors. Land surface temperatures (LST) were estimated from the thermal bands of the Landsat Enhanced Thermal Mapper Plus (ETM+) using remote sensing and geographic information system (GIS) techniques. In addition, meteorological data which included air temperature and relative humidity for the same satellite image dates were used in the analysis. Results showed that Durban metropolitan area is experiencing a major heat island over the city centre with some micro ones around the metro. Comparing the LST results to the landuse/cover of the city showed the UHI phenomenon is a reality with a 3°C and 4°C LST increase over the city centre of Durban for winter and summer seasons respectively in 2012 and being attributed greatly to the human activities within the area that has led to increase thermal radiation from land surface over highly dense and paved areas.

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“…UHI effects can cause tremendous damage to both environmental conditions and public health by inducing the release of poisonous gases, causing species extinction, and exacerbating premature human deaths (Changnon et al, 1996). A number of previous studies have pointed out that urban vegetation and water play a critical role in regulating air temperatures and mitigating UHI effect (Doick and Hutchings, 2013;Li et al, 2013;Huang et al, 2008). The abundance and spatial distribution of urban green space can form a cooling mechanism due to vegetation's unique interaction with the incoming solar radiation (Kwarteng and Small, 2010).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporally characterizing urbantemperatures based on remote sensing and GISanalysis: a case study in the city of Saskatoon(SK, Canada)

Shen

Guo

Kang³

2014

Open Geosciences

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Abstract:The purpose of this study is to spatiotemporally explore the characteristics of urban temperatures based on multi-temporal satellite data and historical in situ measurements. As one of the most rapidly urbanized cities in Canada, Saskatoon (SK) was selected as our study area. Surface brightness retrieving, Pearson correlation, linear regression modeling, and buffer analysis were applied to different satellite datasets. The results indicate that both Landsat and MODIS data can yield pronounced estimations of daily air temperature with a significantly adjusted R 2 of 0.803 and 0.518 at the spatial scales of 120 m and 1000 m, respectively. MODIS monthly LST data is highly suitable for monitoring the trend of monthly urban air temperature throughout summer (June, July, and August) due to a high average R 2 of 0.8 (P<0.05), especially for the warmest month (July). Our findings also reveal that both the Saskatchewan River and urban green spaces have statistically significant cooling effects on the surrounding urban surface temperatures within 500 m and 200 m, respectively. In addition, a multiple linear regression model with four influential factors as independent variables can be developed to estimate urban surface temperatures with a highest adjusted R 2 of 0.649 and a lowest standard error of 0.076.

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A fieldwork study on the diurnal changes of urban microclimate in four types of ground cover and urban heat island of Nanjing, China

Cited by 241 publications

References 30 publications

Spatio-Temporal Trends of Urban Heat Island and Surface Temperature in Izmir, Turkey

Spatio-Temporal Trends of Urban Heat Island and Surface Temperature in Izmir, Turkey

Investigation of quasi periodic signals of X-Ray bursts from neutron star AXP 1E2259+586 using Fourier analysis techniques

Spatiotemporally characterizing urbantemperatures based on remote sensing and GISanalysis: a case study in the city of Saskatoon(SK, Canada)

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