The Earth's climate has warmed by around 0.6 degrees Celsius over the last century, with two
big phases of warming between 1910 and 1945, and from 1976 onwards. Land Surface Temperature
is an important parameter in land surface processes because it serves as an indicator of climate
change. Vegetation may be recognized from most other materials using remote sensing data due to its
noticeable absorption in the red and blue regions of the visible spectrum, increased green reflectance,
and, most importantly, it's very strong reflectance in the near-IR.
For the study area satellite data of the years, 1991 and 2021 was obtained. Different
algorithms were employed for the calculations of spectral radiance, brightness temperature, NDVI,
the proportion of vegetation, land emissivity, and by considering the output of brightness temperature
and land emissivity LST was generated.
As a result, the highest NDVI was 0.72 and the lowest was -0.56 in the year 1991, in the year
2021 NDVI highest value was 0.50 and the lowest value was -0.10. The highest temperature observed
in 1991 was 38.1507 °C, while the lowest being 20.6068 °C whereas, for the year 2021, the maximum
temperature observed is 40.5029 °C and the minimum is 27.3012 °C. A shift of 2.35 °C at the higher
end and 6.69 °C at the lower end can be seen in land surface temperature. This can be due to de-vegetation over time as a result of the increase in tourism, commercialization, urbanization, and
industrialization.
Keywords: De-vegetation, NDVI, LST, Urbanization, and Commercialization
Publication date: 15/01/2022
https://ijbpas.com/pdf/2022/January/MS_IJBPAS_2022_JAN_SPCL_1076.pdf
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https://doi.org/10.31032/IJBPAS/2022/11.1.1076
