Satellite and Ground Estimates of Surface and Canopy-Layer Urban Heat Island

The urban heat island (UHI) effect is one of the prominent impacts of urbanization that affects human health and energy consumption. As the data is limited and inconsistent, UHI comparative studies between UHIUCL and UHISurf on the seasonal scale are limited. The use of only daytime summer imagery reporting “Inverted UHI” undermines the holistic view of the phenomenon. Therefore, this study analyses the seasonal patterns for UHISurf and UHIUCL in three climate zones (Delhi, Pune, and Montreal). The three cities experience a high traditional night-time UHIUCL (Delhi 7°C, Pune 6°C, Montreal 1.89°C). Landsat captures a prominent daytime UHISurf (15°C) in Montreal with temperate climate and daytime inverted UHISurf (-4°C) for Delhi in summer. Seasonally, the night-time UHI is prominent in summer and monsoon for Delhi, summer and spring for Pune, and summer for Montreal. Due to UHI effect, the heatwaves can be more intense in semi-arid and tropical cities than temperate cities.

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Statistical Review of Quality Parameters of Blue-Green Infrastructure Elements Important in Mitigating the Effect of the Urban Heat Island in the Temperate Climate (C) Zone

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17197093 ◽

2020 ◽

Vol 17 (19) ◽

pp. 7093

Author(s):

Patryk Antoszewski ◽

Dariusz Świerk ◽

Michał Krzyżaniak

Keyword(s):

Urban Heat Island ◽

Green Infrastructure ◽

Research Work ◽

Quality Parameters ◽

Mitigation Strategies ◽

Temperate Climate ◽

Heat Island ◽

Climate Zones ◽

Linear Discriminant ◽

Urban Heat

Urban Heat Island (UHI) effect relates to the occurrence of a positive heat balance, compared to suburban and extra-urban areas in a high degree of urbanized cities. It is necessary to develop effective UHI prevention and mitigation strategies, one of which is blue-green infrastructure (BGI). Most research work comparing impact of BGI parameters on UHI mitigation is based on data measured in different climate zones. This makes the implication of nature-based solutions difficult in cities with different climate zones due to the differences in the vegetation time of plants. The aim of our research was to select the most statistically significant quality parameters of BGI elements in terms of preventing UHI. The normative four-step data delimitation procedure in systematic reviews related to UHI literature was used, and temperate climate (C) zone was determined as the UHI crisis area. As a result of delimitation, 173 publications qualified for literature review were obtained (488 rejected). We prepared a detailed literature data analysis and the CVA model—a canonical variation of Fisher’s linear discriminant analysis (LDA). Our research has indicated that the BGI object parameters are essential for UHI mitigation, which are the following: area of water objects and green areas, street greenery leaf size (LAI), green roofs hydration degree, and green walls location. Data obtained from the statistical analysis will be used to create the dynamic BGI modeling algorithm, which is the main goal of the series of articles in the future.

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Including Urban Heat Island in Bioclimatic Early-Design Phases: A Simplified Methodology and Sample Applications

Sustainability ◽

10.3390/su13115918 ◽

2021 ◽

Vol 13 (11) ◽

pp. 5918

Author(s):

Giacomo Chiesa ◽

Yingyue Li

Keyword(s):

Urban Heat Island ◽

Urban Climate ◽

Temperate Climate ◽

Heat Island ◽

Climate Data ◽

Degree Days ◽

Climate Conditions ◽

Early Design ◽

Correct Definition ◽

Urban Heat

Urban heat island and urban-driven climate variations are recognized issues and may considerably affect the local climatic potential of free-running technologies. Nevertheless, green design and bioclimatic early-design analyses are generally based on typical rural climate data, without including urban effects. This paper aims to define a simple approach to considering urban shapes and expected effects on local bioclimatic potential indicators to support early-design choices. Furthermore, the proposed approach is based on simplifying urban shapes to simplify analyses in early-design phases. The proposed approach was applied to a sample location (Turin, temperate climate) and five other climate conditions representative of Eurasian climates. The results show that the inclusion of the urban climate dimension considerably reduced rural HDD (heating degree-days) from 10% to 30% and increased CDD (cooling degree-days) from 70% to 95%. The results reveal the importance of including the urban climate dimension in early-design phases, such as building programming in which specific design actions are not yet defined, to support the correct definition of early-design bioclimatic analyses.

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Local climate zones in the city of Nur-Sultan (Kazakhstan) and their connections with urban heat island and thermal comfort

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/611/1/012060 ◽

2020 ◽

Vol 611 ◽

pp. 012060

Author(s):

A A Berlessova ◽

P I Konstantinov

Keyword(s):

Thermal Comfort ◽

Urban Heat Island ◽

Heat Island ◽

Climate Zones ◽

Local Climate ◽

Local Climate Zones ◽

Urban Heat ◽

The City

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Multitemporal Landsat data for urban heat island assessment and classification of local climate zones

2011 Joint Urban Remote Sensing Event ◽

10.1109/jurse.2011.5764736 ◽

2011 ◽

Cited By ~ 14

Author(s):

Benjamin Bechtel

Keyword(s):

Urban Heat Island ◽

Heat Island ◽

Landsat Data ◽

Climate Zones ◽

Local Climate ◽

Local Climate Zones ◽

Urban Heat

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LINKING THE LOCAL CLIMATE ZONES AND LAND SURFACE TEMPERATURE TO INVESTIGATE THE SURFACE URBAN HEAT ISLAND, A CASE STUDY OF SAN ANTONIO, TEXAS, U.S.

ISPRS Annals of Photogrammetry Remote Sensing and Spatial Information Sciences ◽

10.5194/isprs-annals-iv-3-277-2018 ◽

2018 ◽

Vol IV-3 ◽

pp. 277-283 ◽

Cited By ~ 4

Author(s):

Chunhong Zhao

Keyword(s):

Surface Temperature ◽

Urban Heat Island ◽

Land Surface Temperature ◽

Land Surface ◽

San Antonio ◽

Heat Island ◽

Climate Zones ◽

Local Climate ◽

Local Climate Zones ◽

Urban Heat

The Local Climate Zones (LCZs) concept was initiated in 2012 to improve the documentation of Urban Heat Island (UHI) observations. Despite the indispensable role and initial aim of LCZs concept in metadata reporting for atmospheric UHI research, its role in surface UHI investigation also needs to be emphasized. This study incorporated LCZs concept to study surface UHI effect for San Antonio, Texas. LCZ map was developed by a GIS-based LCZs classification scheme with the aid of airborne Lidar dataset and other freely available GIS data. Then, the summer LST was calculated based Landsat imagery, which was used to analyse the relations between LST and LCZs and the statistical significance of the differences of LST among the typical LCZs, in order to test if LCZs are able to efficiently facilitate SUHI investigation. The linkage of LCZs and land surface temperature (LST) indicated that the LCZs mapping can be used to compare and investigate the SUHI. Most of the pairs of LCZs illustrated significant differences in average LSTs with considerable significance. The intra-urban temperature comparison among different urban classes contributes to investigate the influence of heterogeneous urban morphology on local climate formation.

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