Relation between urban biophysical composition and dynamics of land surface temperature in the Kolkata metropolitan area: a GIS and statistical based analysis for sustainable planning

Urbanization has become one of the most important human activities modifying the Earth’s land surfaces; and its impacts on tropical and subtropical cities (e.g., in South/Southeast Asia) are not fully understood. Colombo; the capital of Sri Lanka; has been urbanized for about 2000 years; due to its strategic position on the east–west sea trade routes. This study aims to investigate the characteristics of urban expansion and its impacts on land surface temperature in Colombo from 1988 to 2016; using a time-series of Landsat images. Urban land cover changes (ULCC) were derived from time-series satellite images with the assistance of machine learning methods. Urban density was selected as a measure of urbanization; derived from both the multi-buffer ring method and a gravity model; which were comparatively adopted to evaluate the impacts of ULCC on the changes in land surface temperature (LST) over the study period. The experimental results indicate that: (1) the urban land cover classification during the study period was conducted with satisfactory accuracy; with more than 80% for the overall accuracy and over 0.73 for the Kappa coefficient; (2) the Colombo Metropolitan Area exhibits a diffusion pattern of urban growth; especially along the west coastal line; from both the multi-buffer ring approach and the gravity model; (3) urban density was identified as having a positive relationship with LST through time; (4) there was a noticeable increase in the mean LST; of 5.24 °C for water surfaces; 5.92 °C for vegetation; 8.62 °C for bare land; and 8.94 °C for urban areas. The results provide a scientific reference for policy makers and urban planners working towards a healthy and sustainable Colombo Metropolitan Area.

Download Full-text

Spatial pattern of greenspace affects land surface temperature: evidence from the heavily urbanized Beijing metropolitan area, China

Landscape Ecology ◽

10.1007/s10980-012-9731-6 ◽

2012 ◽

Vol 27 (6) ◽

pp. 887-898 ◽

Cited By ~ 183

Author(s):

Xiaoma Li ◽

Weiqi Zhou ◽

Zhiyun Ouyang ◽

Weihua Xu ◽

Hua Zheng

Keyword(s):

Surface Temperature ◽

Spatial Pattern ◽

Land Surface Temperature ◽

Metropolitan Area ◽

Land Surface ◽

Beijing Metropolitan Area

Download Full-text

Assessing and predicting land use/land cover, land surface temperature and urban thermal field variance index using Landsat imagery for Dhaka Metropolitan area

Environmental Challenges ◽

10.1016/j.envc.2021.100192 ◽

2021 ◽

pp. 100192

Author(s):

Abdullah-Al Faisal ◽

Abdulla-Al Kafy ◽

Abdullah Al Rakib ◽

Kaniz Shaleha Akter ◽

Dewan Md. Amir Jahir ◽

...

Keyword(s):

Land Use ◽

Land Cover ◽

Surface Temperature ◽

Land Surface Temperature ◽

Metropolitan Area ◽

Land Surface ◽

Thermal Field ◽

Landsat Imagery ◽

Land Use Land Cover ◽

Variance Index

Download Full-text

Urban Temperature Profiles and Land Cover Detection in the Jakarta Metropolitan Area using Remote Sensing

Indonesian Journal of Geography ◽

10.22146/ijg.45934 ◽

2019 ◽

Vol 51 (3) ◽

pp. 357

Author(s):

Hasti Widyasamratri ◽

Kazuyoshi Souma ◽

Tadashi Suetsugi

Keyword(s):

Land Cover ◽

Surface Temperature ◽

Air Temperature ◽

Land Surface Temperature ◽

Metropolitan Area ◽

Land Surface ◽

Thermal Environment ◽

Land Cover Classification ◽

Rapid Urbanization ◽

Cooling Period

This research aim to investigate the urban thermal environment profile and land cover classification in the Jakarta Metropolitan Area (JMA) in 1989 and 2013. Thermal environment conducted by installing fix point ground measurement of air temperature and land surface temperature. The land cover classification was carried out by using Landsat TM 5 and Landsat 7 ETM+ data sets. The diurnal variation of air temperature shows that Urban Heat Island (UHI) was occurring in urban and suburban JMA, which can be seen the slower cooling period in the urban area than suburban areas. Positive correlation between air temperature (Ta) and land surface temperature (Ts) on the brush (r2 = 0.78) and the asphalt surface (r2= 0.88) is clearly shown during the study. The rapid urbanization was detected during 1989 to 2013 where the urban sprawl is spread over to the whole area of JMA. Urban built up is the dominant of high increase due to years, while vegetation is decreasing.

Download Full-text