Spatial patterns and temporal variations of footprint and intensity of surface urban heat island in 141 China cities

2022 ◽  
Vol 77 ◽  
pp. 103585
Author(s):  
Jia Hu ◽  
Yingbao Yang ◽  
Yuyu Zhou ◽  
Tao Zhang ◽  
Zhangfeng Ma ◽  
...  
Keyword(s):  
Urban Heat Island ◽  
Spatial Patterns ◽  
Temporal Variations ◽  
Heat Island ◽  
Urban Heat ◽  
Surface Urban Heat Island

Surface urban heat island in China's 32 major cities: Spatial patterns and drivers

2014 ◽  
Vol 152 ◽  
pp. 51-61 ◽  
Author(s):  
Decheng Zhou ◽  
Shuqing Zhao ◽  
Shuguang Liu ◽  
Liangxia Zhang ◽  
Chao Zhu
Keyword(s):  
Urban Heat Island ◽  
Spatial Patterns ◽  
Heat Island ◽  
Urban Heat ◽  
Surface Urban Heat Island

scholarly journals Spatial and Temporal Analysis of Surface Urban Heat Island and Thermal Comfort Using Landsat Satellite Images between 1989 and 2019: A Case Study in Tehran

2021 ◽  
Vol 13 (21) ◽  
pp. 4469
Author(s):  
Faezeh Najafzadeh ◽  
Ali Mohammadzadeh ◽  
Arsalan Ghorbanian ◽  
Sadegh Jamali
Keyword(s):  
Thermal Comfort ◽  
Urban Heat Island ◽  
Temporal Variations ◽  
Google Earth ◽  
Landsat 8 ◽  
Heat Island ◽  
Urban Heat ◽  
Surface Urban Heat Island ◽  
Spatio Temporal ◽  
The City

Mapping and monitoring the spatio-temporal variations of the Surface Urban Heat Island (SUHI) and thermal comfort of metropolitan areas are vital to obtaining the necessary information about the environmental conditions and promoting sustainable cities. As the most populated city of Iran, Tehran has experienced considerable population growth and Land Cover/Land Use (LULC) changes in the last decades, which resulted in several adverse environmental issues. In this study, 68 Landsat-5 and Landsat-8 images, collected from the Google Earth Engine (GEE), were employed to map and monitor the spatio-temporal variations of LULC, SUHI, and thermal comfort of Tehran between 1989 and 2019. In this regard, planar fitting and Gaussian Surface Model (GSM) approaches were employed to map SUHIs and derive the relevant statistical values. Likewise, the thermal comfort of the city was investigated by the Urban Thermal Field Variance Index (UTFVI). The results indicated that the SUHI intensities have generally increased throughout the city by an average value of about 2.02 °C in the past three decades. The most common reasons for this unfavorable increase were the loss of vegetation cover (i.e., 34.72%) and massive urban expansions (i.e., 53.33%). Additionally, the intra-annual investigations in 2019 revealed that summer and winter, with respectively 8.28 °C and 4.37 °C, had the highest and lowest SUHI magnitudes. Furthermore, the decadal UTFVI maps revealed notable thermal comfort degradation of Tehran, by which in 2019, approximately 52.35% of the city was identified as the region with the worst environmental condition, of which 59.94% was related to human residents. Additionally, the relationships between various air pollutants and SUHI intensities were appraised, suggesting positive relationships (i.e., ranging between 0.23 and 0.43) that can be used for establishing possible two-way mitigations strategies. This study provided analyses of spatio-temporal monitoring of SUHI and UTFVI throughout Tehran that urban managers and policymakers can consider for adaption and sustainable development.

The impact of COVID-19 lockdowns on surface urban heat island changes and air-quality improvements across 21 major cities in the Middle East

2021 ◽  
pp. 117802
Author(s):  
Ahmed M. El Kenawy ◽  
Juan I. Lopez-Moreno ◽  
Matthew F. McCabe ◽  
Fernando Domínguez-Castro ◽  
Dhais Peña-Angulo ◽  
...  
Keyword(s):  
Air Quality ◽  
Middle East ◽  
Urban Heat Island ◽  
Heat Island ◽  
Quality Improvements ◽  
Urban Heat ◽  
Surface Urban Heat Island ◽  
The Impact

Quantifying the response of surface urban heat island to urban greening in global north megacities

2021 ◽  
pp. 149553
Author(s):  
Fengqi Cui ◽  
Rafiq Hamdi ◽  
Xiuliang Yuan ◽  
Huili He ◽  
Tao Yang ◽  
...  
Keyword(s):  
Urban Heat Island ◽  
Heat Island ◽  
Urban Greening ◽  
Global North ◽  
Urban Heat ◽  
Surface Urban Heat Island
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