Lucknow: Day time temperature in the city continued to rise and Sunday recorded second hottest day of summer season so far. Maximum temperature recorded in the city was 41.9 degrees celsius, 3.4 degrees above normal.Temperature witnessed steady rise with maximum recorded at 39.8 degrees Celsius on Friday rising to 41 degrees Celsius on Saturday. Night temperatures were high too, with minimum recorded at 24.4 degrees Celsius, 2.8 degrees Celsius above normal.According to the weatherman, no relief is likely for next four days with temperatures likely to remain over 40 degrees celsius for next 3-4 days.“City is recording temperatures over due to a combination of dry westerly winds and an anticyclonic system bringing warm air from Rajasthan. Hot, dry winds flowing from Rajasthan are reaching the plains, including Lucknow, causing a rapid rise in temperatures. Lack of active western disturbances (weather systems from the Mediterranean) has meant no rain or cloud cover to offer relief, leading to prolonged clear, sunny skies,” said senior scientist Mohammad Danish of the state met department.He said anticyclone over Maharashtra is enhancing the heating effect. Anticyclonic circulation increases surface temperatures primarily through adiabatic warming caused by descending (sinking) air. The high-pressure system suppresses clouds, leading to prolonged, intense sunshine, while sinking air compresses, dries out and warms, often resulting in heatwaves and dry conditions. Also, 41 degrees feels more like 45 degrees or more as the concrete buildings and roads within the city trap heat, causing the actual sensation of heat to feel higher than the recorded temperature.
