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Spatiotemporal analysis of land surface temperature trends in Nashik, India: A 30-year study from 1992 to 2022

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Abstract

Over the past thirty years, Nashik, India, witnessed rapid urbanization, elevating Land Surface Temperatures (LSTs). This study presents a comprehensive approach for analyzing the spatiotemporal dynamics of LST in Nashik by utilizing Thermal Infrared Radiation bands from LANDSAT datasets. Regional LST maps from mid-May in 1992, 2003, 2013, and 2022, produced using the single channel algorithm, analyze LST changes and distributions. Land Cover Maps are developed to analyse the LST changes across different Land Classes. Further, statistical relationships are established across LSTs and landscape indicators like Normalized Difference Built-Up Index (NDBI), Normalized Difference Bareness Index (NDBaI), Normalized Difference Vegetation Index (NDVI), and Normalized Difference Water Index (NDWI). A consistent increase in citywide LST is detected as the area coverage for hottest (40–45)°C LST band grew from 30.47 km2 in 1992 to 132.16 km2, 141.47 km2 and 174.85 km2 in 2003, 2013 and 2022 respectively. In contrast the cooler (30–40)°C band coverages fell from 305.39 km2 in 1992 to 203.12 km2, 194.66 km2and 144.82 km2 in 2003, 2013 and 2022 respectively. In 2022, an unprecedented 16.25 km2 area experienced extreme LST (45–50)°C, a trend unseen in prior decades. Noteworthy, Built-up areas and Barelands showed much higher (40–45)°C LSTs than vegetated areas and water bodies (30–40)°C. Statistical relations also affirm these patterns: Stronger LST corelations (ρ = 0.66) to NDBI indicate higher temperatures in densely built-up areas. In comparison, negative LST correlations with NDVI (ρ = -0.61) and NDWI (ρ = -0.66) signify cooler zones with vegetation and water bodies. These findings emphasize water-rich areas with vegetation moderating temperatures, while built-up areas elevate heat. Thus, municipalities must prioritize awareness, green spaces, water conservation, cooling technologies, and zoning regulations to counteract this warming trend.

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The data that support the findings of this study are available on request from the corresponding author.

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Acknowledgements

The Authors acknowledge the technical support provided by Indian Institute of Information Technology, Pune for conducting this research work.

Spatiotemporal Analysis of Land Surface Temperature Trends in Nashik, India: A 30-Year Study from 1992 to 2022

Funding

No funding was received was conducting this research. This work is undertaken as a part of corresponding author’s PhD research work.

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Authors

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Kratika Sharma: Original Idea, Conceptualization, Data Collection, Data Analysis, Paper Writing.

Ritu Tiwari: Conceptualization, Paper Writing, Paper Review.

Arun Kumar Wadhwani : Conceptualization, Paper Review.

Shobhit Chaturvedi : Conceptualization, Paper Review.

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Correspondence to Kratika Sharma.

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The authors declare no competing interests.

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Communicated by: H. Babaie

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Sharma, K., Tiwari, R., Wadhwani, A.K. et al. Spatiotemporal analysis of land surface temperature trends in Nashik, India: A 30-year study from 1992 to 2022. Earth Sci Inform (2024). https://doi.org/10.1007/s12145-024-01260-3

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  • DOI: https://doi.org/10.1007/s12145-024-01260-3

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