Urban Heat Island

The Indian Meteorological Department (IMD) has forecast 2021 to be the hottest summer season in recent years in many parts of the country. On March 24th, Delhi recorded the hottest day of the month in  76 years. In fact, 2019 was the seventh warmest year in the history of humankind after 1901.  Summers in India are becoming increasingly unbearable and cities are finding it hard to cope with heat wave related incidents. A study by scientists at IIT Gandhinagar has forecast an eight fold rise in heat wave related incidents in the country if the global community fails to check…

A study published in the Journal of Remote Sensing and Space Sciences, analyzing the cooling effect on the city of Ahmedabad’s water bodies, has thrown up some interesting findings. The east bank of the Sabarmati river, which flows through Ahmedabad, was found to be significantly cooler than the west bank, witnessing a greater drop in temperature even during summer. The study provides direct evidence of how water bodies affect temperature variations. The Sukhna lake in Chandigarh and the Sabarmati river in Ahmedabad were taken up in the study, to assess the variations in microclimate near these water bodies. Urbanization has resulted in…

Cyclone Fani in early May was one more reminder for Bhubaneswar of its vulnerability to extreme weather events, and the massive damage to urban infrastructure that such events could bring about, even in an upcoming ‘smart’ city. Fani left Bhubaneswar in shambles  in its trail, with uprooted trees all around falling on roads and buildings, disrupting major services like supply of water and electricity as well as Internet connectivity. Life in the city remained miserable for weeks. Last year too, life in the city had been severely disrupted, as it almost went under water following unusually heavy rainfall of nearly…

This summer, Jaipur’s temperatures are soaring upwards of 40 degree Celsius. Jaipur witnessed its hottest day (as of June 4, 2018) on April 26 when a temperature of 43.2 degree Celsius was recorded. Of late, at least some parts of the city are beginning to exhibit signs of climate change typical of large cities. With more concrete and asphalt replacing natural vegetation, “urban heat islands” are becoming a reality and Jaipur is a good example of this. Urban heat islands are pockets of densely populated areas in a city where temperatures are higher than the rest of the city, thanks to packed…