Remote sensing‐based geostatistical hot spot analysis of Urban Heat Islands in Dhaka, Bangladesh

Datos Bibliográficos

ID20153384
AutoresNur Hussain (0000-0003-4729-1397, School of Earth, Environment & Society McMaster University Hamilton Canada, autor de correspondencia), S M Shahriar Ahmed (0000-0003-2210-2393, Department of Geography and Environment Jahangirnagar University Dhaka Bangladesh), Amena Muzaffar Shumi (Faculty of Agricultural Sciences University of Hohenheim Stuttgart Germany)
Año2023
Volumen44
Número3
Páginas438-458
Fecha de publicación2023-09-01
Peer ReviewedSí
Open AccessSí
TipoARTICLE
RevistaSingapore Journal of Tropical Geography (JOURNAL)
Identificadores de la revistaISSN: 0129-7619 • E-ISSN: 1467-9493
EditorialWiley (PUBLISHER • GB)
DOI10.1111/sjtg.12507
OpenAlexW4386331651
IdiomaEN
Citas recibidas2
Referencias citadas65

Urban Heat Island (UHI) refers to a phenomenon whereby urban areas experience higher temperatures compared to the surrounding areas. Remote sensing‐based Land Surface Temperature (LST) measurements can be utilized to measure UHI. This study emphasized on geostatistical remote sensing‐based hot spot analysis () of UHI in Dhaka, Bangladesh as a way of examining the influences of Land Use Land Cover (LULC) on UHI from 1991 to 2015. Landsat 5 and 7 satellite‐based remote sensing indices were used to explore LULC, UHI and environmental footprints during the study period. The Urban Compactness Ratio ( C oR ) was used to calculate the urban form and augmented characteristics. The Surface Urban Heat Island (SUHI) intensity (ΔT) was also used to explore the effects of UHI on the surrounding marginal area. Based on our investigations into LULC, we discovered that around 71.34 per cent of water bodies and 71.82 percent of vegetation cover decreased from 1991 to 2015 in Dhaka city. Contrastingly, according to C oR readings, 174.13 km 2 of urban areas expanded by 249.77 per cent. Our hot spot analysis also revealed that there was a 93.73 per cent increase in hot concentration zones. Furthermore, the average temperature of the study area had increased by 3.26°C. We hope that the methods and results of this study can contribute to further research on urban climate

Geography · Hot spot (computer programming) · Intensity (physics) · Land cover · Land use · Meteorology · Physical geography · Remote sensing · Urban area · Urban climate · Urban heat island · Urbanization · Vegetation (pathology) · Vegetation cover · Environmental Science · Land Use and Ecosystem Services · Remote Sensing and Land Use · Urban Heat Island Mitigation