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| Title | Evaluation Of Urban Land Surface Temperatures And Land Use/Land Cover Dynamics For Palakkad Municipality, Kerala, For Sustainable Management |
|---|---|
| ID_Doc | 24940 |
| Authors | Dhanya P.; Jayarajan K.; Selvaraj S. |
| Year | 2023 |
| Published | Springer Geography |
| DOI | http://dx.doi.org/10.1007/978-3-031-24767-5_23 |
| Abstract | The rapid urbanisation and land use/land cover (LULC) changes have resulted in the unsustainable growth and rise in heat islands (UHI) in Indian cities. Palakkad is one such city in Kerala, which is known for its relatively higher temperatures than other parts of the state. Therefore, this study was designed to quantify the Land Surface Temperature (LST) dynamics of Palakkad city in response to the LULC change during 2001–2021 using temporal Landsat datasets. Landsat Imagery 7 and 8 of 2001 and 2021 for summer and winter months were processed. The analytical outcomes reveal that mean LST for winter season was 27.07 °C during 2001 and that has increased to 28.35 °C during 2020. Whereas in summer, the mean LST that was 28.59 °C in 2001 has escalated to 29.32 °C during 2021. The results also display a significant decline in vegetation cover from 13.4 to 2.48 km2 and doubling of built-up areas, i.e. from 7.53 to 16.05 km2 during 2001–2021. Similarly, the areas under water bodies have shrunken from 2.18 to 1.14 km2 during 2001–2021. Further, the difference in the rise in the mean land surface temperature during the years 2020 and 2001 is more (1.99 °C) during summer season than winter season (1. 28 °C). Diurnal temperature range in LST between 2001 and 2020 LST has increased slightly during winters and decreased (−0.37 °C) during summers. Significant rise in day and night temperature is likely in future under RCP 4.5 scenario. Due to this, a significant increase in urban heat island (UHI) is seen for central, north-western, and north-eastern parts of the municipality. This type of micro-level research throws useful insights into the process of smart city development, policymaking and planning and heat island mitigation within the Palakkad city limits. The drastic rise in urban settlements and reduction in green cover in the north-western parts requires urgent action plans as envisaged in India’s NDCs and SDGs for wellbeing of the inhabitants. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG. |
| Author Keywords | Land surface temperature; Land use land cover dynamics; Palakkad; Sustainable management; Urban heat island; Urbanisation |
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