Year after year the heat in India will increase. In the report of the Meteorological Department, it has been claimed that now the duration of heatwave will increase from 12 to 18 days. Know what was said in the report.
New Delhi: The Indian Meteorological Department (IMD) has issued a big alert and said that by the year 2060, the number of heatwave days will increase in most parts of India. The IMD has said in a new report released on Tuesday that the duration of heatwave will increase from 12 to 18 days by 2060 in most parts of the country, affecting normal life.
IMD's report titled "Process and Prediction of Heatwave and Coldwave in India" states that the gap between extreme heat and extreme cold is increasing and there is a need to systematically improve ventilation and insulation. To improve ventilation in buildings where people live; Awareness, issuing weather warnings and building cold shelters will be necessary to prevent heatstroke.
The IMD has said in the report that heatwaves have caused more damage to India than natural hazards due to tropical cyclones, increasing the number of deaths due to heatwaves.
When is heatwave declared?
A heatwave is declared by the IMD when the maximum temperature is above 40 degrees Celsius and is 4.5 degrees above normal. A severe heat wave is declared when the maximum temperature is above 40 degrees Celsius and is 6.5 degrees above normal. Heatwaves usually occur in the period March to June in the coastal areas of central, northwestern India, Andhra Pradesh and Odisha.
The heat wave is more than 10 days at many stations in Central, North-West India and Coastal Andhra Pradesh. The longest period of summer in the extreme north-west of India is now more than 15 days. The IMD report found that the longest extreme heat wave in central and northwestern India usually lasts for more than five days, while it is less than that in the southern peninsula, including the Andhra Pradesh coast. Due to global warming, there has been an increase of about two heatwaves in the period from 2020 to 2064 and the duration of the heat wave may increase from 12 to 18 days in future.
Heat waves will increase up to 30 times in future
The report of the Ministry of Earth Sciences states that “on an average two to three days of heat wave prevail in a year; The total duration of heatwaves has increased by three days over the past 30 years. A further increase to two heatwaves per year is expected in the future, which means that by 2060 there will be heatwave durations of 12 to 18 days. Most importantly, peninsular India and coastal areas where heatwaves are not common will also record heatwaves in future scenarios. The studies in the report suggest that by the end of the 21st century, the frequency of severe heat waves will increase 30 times than at present.
The report states that “due to climate change, temperature extremes are likely to be reached and exceeded in some places in South Asia by the end of the 21st century. Densely populated agricultural areas, especially in the Ganges and Indus river basins, are at greatest risk from extreme heat.