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Urbanizational impact on climatic variables and geographical analysis of physical land use land cover variation of a city using Remote Sensing.

  • Authors (legacy)
    Corresponding: Santhana Iyyappa Sundararaj S
    Co-authors: Santhana Iyyappa Sundararaj S, Dr. Chandramathy I, Dr.Jeykumar R.K.C, Dr. Chandramohan K
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  • gnest_05920_final.pdf
  • Paper ID
    gnest_05920
  • Paper status
    Published
  • Date paper accepted
  • Date paper online
Graphical abstract
Abstract

Climate change has serious implications foron the rise and variation of the average earth’s temperature, and intensified rainfall. In urban areas, temperatures and intensified rainfall variation are noticeably seenin the city which disrupts the normal life of a living things. Also, it affects the storage of rainfall runoff water in tanks and lakes. Green cover reduction due to the increase ofagriculture, industrialization, population explosion and urbanization have a direct impact on the climate pattern.The average temperature of a city is increasing in every decade due to a drastic reduction in the green cover.This is visible today from the abnormal melting of glaciers. The rainfall pattern is highly intensified, and the frequency of rainfall is on the a decreasing trend. This intensified rainfall creates high surface runoff during rainfall and disrupts the normal life in a city. The Standard Precipitation Index (SPI) for a city indicates a noticeable shift in its climatic pattern, particularly with consistent rainfall during the southwest monsoon. Over the span of four decades, LULC research has revealed an increase in residential areas and a decrease in green cover. This urbanization process is associated with changes in LULC, resulting in decreased vegetation and diminished storage water bodies.Variations in the temperature of a city are on an increasing trend. Urban forestry or the dense green coverof an area reduces the temperature and creates cool pockets in the city. The regression model for temperature and vegetation indicates the negative correlation of temperature with high vegetation growth. Keywords: Urbanization, Climate change, Rainfall-runoff, Temperature, Green Cover

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Sundararaj, I. et al. (2024) “Urbanizational impact on climatic variables and geographical analysis of physical land use land cover variation of a city using Remote Sensing. ”, Global NEST Journal, 26(5). Available at: https://doi.org/10.30955/gnj.005920.