Analysing the trending nature in land surface temperature on different land use land cover changes in urban lakes, West Bengal, India

Lakes are known to be the bearers and carriers of any ecosystem. Lakes appropriately assist in local weather regulation in a growing urban area. But as urban areas expand, these urban lakes continue to shrink, and the impact of the urban heat island (UHI) on these lakes continues to grow. This paper highlights the impact of land use change on the urban lakes of three different climates in West Bengal, India, and their role in mitigating the seasonal UHI situation. From 2000 to 2020, the urban area and LST in the vicinity of Rabindra Sarobar in Kolkata, Saheb bandh in Purulia and Mirik Lake in Darjeeling have been steadily increasing. On the other hand, the water and vegetation index have been declining in some cases. Also, validating the LST obtained from the satellite with the surface temperature shows that the relationship between these two elements is quite good. Of these three urban lakes, Mirik Lake is the best in overall condition, but Rabindra Sarobar is more conserved than the other two lakes. Not only that, the effect of LST on the types of land use is most noticeable in settlements and the LST increases with distance from wetlands towards the surrounding urban area. Even if the weather changes, it is expected that people will save these urban lakes in the future for their own needs.