Characteristics of Surface Urban Heat Island (SUHI) over the Gangetic Plain of Bihar, India

The progressive nature of urbanization plays a prominent role in land–atmosphere processes, which have corresponding impacts on the general environment. This research investigated the changing patterns of the land use land cover over Osogbo and its environs using remote sensing data obtained from Landsat TM, ETM+ and OLI/TIRS sensors. The changes in four land use classes were assessed for the years 1984, 2000 and 2015. The land surface temperature (LST) of the area was estimated from the satellite images covering the study periods, and the surface urban heat island (SUHI) process was also investigated between the city of Osogbo and the surrounding towns. The results showed major urban expansion leading to urban sprawl within the vicinity. Urban area increased by 5106 ha while vegetation decreased by 8653 ha between 1984 and 2015 indicating major variations in the land surface features. This was revealed by the increase in the LST over the locations which ranged between 22.6°C and 30°C (mean, 25.2°C) in 1984 and between 29.3°C and 36.7°C (mean, 31°C) in 2015. The highest SUHI intensity was observed between the major urban area (Osogbo) and least developed towns. The continuous increase in the surface temperature of the environment due to the continuous variations in the land surface properties implies increased risk of heat-related environmental issues such as deterioration of thermal comfort conditions.

show abstract

“…According to Barat et al . [34], the rapid development of metropolitan areas accounts for intensification of the temperature of the land surface.…”

Section: Discussionmentioning

confidence: 99%

Investigation of the changing patterns of the land use land cover over Osogbo and its environs

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The increasing duration of the MODIS LST record, with high temporal resolution and data quality, allow us to examine both inter-annual variability and long-term trends of SUHI after 2000. However, such efforts have been restricted to a few regions like China [76,109,121], India [256], Mediterranean [179], and Thailand [257] due to the relatively short observation time and coarse spatial resolution. An integrated use of multi-source data (e.g., MODIS and Landsat) could generate LST observations at both high spatial and temporal resolutions, but at the cost of accuracy [215,258].…”

Section: Interannual Variability and Long-term Trends Of Suhimentioning

confidence: 99%

Satellite Remote Sensing of Surface Urban Heat Islands: Progress, Challenges, and Perspectives

et al. 2018

View full text Add to dashboard Cite

The surface urban heat island (SUHI), which represents the difference of land surface temperature (LST) in urban relativity to neighboring non-urban surfaces, is usually measured using satellite LST data. Over the last few decades, advancements of remote sensing along with spatial science have considerably increased the number and quality of SUHI studies that form the major body of the urban heat island (UHI) literature. This paper provides a systematic review of satellite-based SUHI studies, from their origin in 1972 to the present. We find an exponentially increasing trend of SUHI research since 2005, with clear preferences for geographic areas, time of day, seasons, research foci, and platforms/sensors. The most frequently studied region and time period of research are China and summer daytime, respectively. Nearly two-thirds of the studies focus on the SUHI/LST variability at a local scale. The Landsat Thematic Mapper (TM)/Enhanced Thematic Mapper (ETM+)/Thermal Infrared Sensor (TIRS) and Terra/Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) are the two most commonly-used satellite sensors and account for about 78% of the total publications. We systematically reviewed the main satellite/sensors, methods, key findings, and challenges of the SUHI research. Previous studies confirm that the large spatial (local to global scales) and temporal (diurnal, seasonal, and inter-annual) variations of SUHI are contributed by a variety of factors such as impervious surface area, vegetation cover, landscape structure, albedo, and climate. However, applications of SUHI research are largely impeded by a series of data and methodological limitations. Lastly, we propose key potential directions and opportunities for future efforts. Besides improving the quality and quantity of LST data, more attention should be focused on understudied regions/cities, methods to examine SUHI intensity, inter-annual variability and long-term trends of SUHI, scaling issues of SUHI, the relationship between surface and subsurface UHIs, and the integration of remote sensing with field observations and numeric modeling.

show abstract

“…Today, the study of UHI has gained wider acceptance due to its importance in urban climate study, urban planning and management. It investigates issues of urban densification, reduction in vegetation and increase in anthropogenic heat which often results into increase in heat-related illnesses and detoriation of living environment (Archisman, 2017) stated that UHI will also increase energy consumption and elevation of ground-level ozone. Similarly, UHI can also induce urban air quality due to heat waves (Archisman, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…It investigates issues of urban densification, reduction in vegetation and increase in anthropogenic heat which often results into increase in heat-related illnesses and detoriation of living environment (Archisman, 2017) stated that UHI will also increase energy consumption and elevation of ground-level ozone. Similarly, UHI can also induce urban air quality due to heat waves (Archisman, 2017). In the same way, urban local climate can also be affected by UHI (Archisman, 2017).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Urban Heat Island in Kaduna Metropolis Between 2000 and 2018

Mande¹,

Abashiya²

2021

FJS

View full text Add to dashboard Cite

Urbanization is a major event in human history and there is no doubt the world is urbanizing rapidly and this is resulting in changes in temperature. This research aims is to identify changes in land surface temperature (LST) between 2000 and 2018. The technique used is the Landsat TM. The result of the land cover classification revealed a +15.93% increase in built-up areas, -27.21% decrease in vegetative cover, +11.19% increase in bare land and +0.09 increase in water bodies between 2000 and 2018. NDVI analysis showed a +0.02 and +0.17 increase in the maximum and minimum range and a +2.16 and -7.76 increase and decrease in maximum and minimum temperature respectively for LST. The finding revealed that the repelling of vegetative cover by built-up is an evidence of rapid urbanization taking place in Kaduna metropolis and a major driver of UHI in Kaduna metropolis. Conclusively, there is a correlation between the various land covers of study i.e built-up, vegetative cover, bare land and water body and LST in Kaduna metropolis between 2000 and 2018. Likewise, urban development has a major impact on urban climate particularly in the increase in land surface temperature which in turn contributes to the development of urban heat. This is true because changes in urban land cover tend to alter the spectral signature and emissivity of the urban surface as observed using remote sensing. The researcher suggests further studies should focus on the assessment of UHI under different land cover and micro-climate in Kaduna metropolis.

show abstract

Characteristics of Surface Urban Heat Island (SUHI) over the Gangetic Plain of Bihar, India

Cited by 26 publications

References 37 publications

Investigation of the changing patterns of the land use land cover over Osogbo and its environs

Investigation of the changing patterns of the land use land cover over Osogbo and its environs

Satellite Remote Sensing of Surface Urban Heat Islands: Progress, Challenges, and Perspectives

Assessment of Urban Heat Island in Kaduna Metropolis Between 2000 and 2018

Contact Info

Product

Resources

About