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MAKES A HOT WAVE BASE EVEN FOR FURTHER

Young Bites. Dated: 4/22/2025 11:31:18 AM

VIJAY GARG The effect of climate change is disturbing people worldwide. Many types of disasters come out on the day due to extreme seasonal events. So trying to understand its pattern. In this order a team of researchers at the University of Ioit Bambe and Johannes Rtenberg in Germany has explores why it fell of extreme heat one after another in South Asia during March and April 2022. The temperature reached an extraordinary level for the time across the region, including India and Pakistan, which was 3-8 degrees Celsius above the constant average. The long period of hot weather continued in May as well. This study in this regard states that a heatwave (hot wave or state of lu) can create favorable conditions for the next heatwave in the atmosphere, leading to a cycle. And then the summer season can be likely to stretch long. Researchers said that: In the conclusion of the study published in the Journal of Geophysical Research Atmosphere, researchers have reported that it shows a "worrying pattern," according to which the next heatwave is more intense. The excessive heat of the first heatwave removes moisture from the soil, making it dry. Excessive dryness can turn on a cycle of atmospheric processes, making the next period even worse. According to Arpita Mandal, associate professor of study co-author Iiti Bambe, when there is moisture in the soil, some energy of the sun in the state of clear sky goes into evaporating that moisture instead of heating the air. But when the soil is already dry it takes all the energy directly to heat the air. Comparing the heatwave of March and April, the team found that each heatwave was powered by a different atmospheric process. by winds at first high altitude and by the second dry soil conditions, which had formed as a result of the former. Roshan Jha, the leading author of the study, Iiti Bambe, says that our analysis shows that the March heatwave was primarily associated with a sudden increase in the amplitude of short-term atmospheric rasby waves, which are largely curved in high-altitude winds, like a twist in the winding river. The waves further became more powerful, as the high-altitude Western winds (extratropical jet streams) near the poles shifted energy to the Western winds (subtropical jet streams) approaching the equator as they came closer during heatwaves. However, the April heat wave began differently, mainly due to the very dry soil conditions and the coming of heat in India from the north- western land regions of Pakistan and Afghanistan. Researchers say these dry conditions were partly made of the last summer wave of March, which had already dried up the land due to high temperatures and clear skies. "Study findings indicate that the Webguide interaction with the Equator and Energy Transfer increases the early heat in March, following which the base is prepared for more heat in the next weeks by reducing soil moisture levels. The air patterns continue to be affected with the hot future being more certain in recent times, and identifying these changes helps better predict the effects of future heat waves and reduce them, says Aiit Bambe's Chair Professor Subimal Ghosh. It is important to understand these mechanisms to forecast extreme heat events in South Asia and improve our ability to be prepared for them. According to a study published in 2023 in a journal called Environmental Research Climate, extreme heat events that took place in March and April 2022 are likely to occur once in 100 years and the possibility of these events has increased to 30 times more due to climate change. Vijay Garg Retired Principal Educational Columnist Street kour Chand MHR Malout Punjab