Statistical analysis of diurnal variations in land surface temperature and the UHI effect using aqua and terra MODIS data

Natural and anthropogenic environmental changes are the key drivers in expansion of cities in the form of higher surface temperature than the expected one. This study aims to investigate the seasonality and homogeneity of surface temperatures in Indian city and its environs. To this end, we utilized...

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Bibliographic Details
Published in:Remote sensing letters 2023-05, Vol.14 (5), p.503-511
Main Authors: Chauhan, Shivam, Jethoo, Ajay Singh
Format: Article
Language:English
Subjects:
Anthropogenic changes
Anthropogenic factors
Correlation analysis
diurnal and temporal variation
Diurnal variations
Environmental changes
Homogeneity
Land surface temperature
Land Surface Temperature (LST)
Metropolitan areas
Mitigation
Moderate Resolution Imaging Spectroradiometer (MODIS)
MODIS
Monsoons
Night
Remote sensing
Remote sensors
Rural areas
Seasonal variations
Seasonality
Spectroradiometers
Statistical analysis
Statistical methods
Summer
Surface temperature
Sustainable development
Temperature
Urban areas
Urban Heat Indices (UHI)
Winter
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Summary:Natural and anthropogenic environmental changes are the key drivers in expansion of cities in the form of higher surface temperature than the expected one. This study aims to investigate the seasonality and homogeneity of surface temperatures in Indian city and its environs. To this end, we utilized day and night-time remote sensing data collected by Moderate Resolution Imaging Spectroradiometer (MODIS) sensor aboard the Aqua and Terra satellites from 2003 to 2020, encompassing the summer, monsoon and winter seasons. Our investigation reveals that the outskirts of urban centres experience significantly higher surface temperatures and more intense Urban Heat Indices (UHI) throughout the day. The temperature differential in the study area is consistently high throughout the year. Notably, both during the day and at night, the metropolitan areas of Ahmedabad city exhibit significantly higher temperatures than the surrounding rural regions. Furthermore, correlation analysis suggests that the most reliable results are obtained using the day-day and night-night combinations during the summer, monsoon and winter seasons, as opposed to the day-night and night-day combinations. These findings provide valuable insights into the thermal characteristics of urban regions, highlighting the need for appropriate mitigation strategies to combat the effects of UHI and promote sustainable development.
ISSN:2150-704X
2150-7058
DOI:10.1080/2150704X.2023.2215948