Rapid change in rainfall patterns due to warming of climate: Study

Ground Report | New Delhi: Rapid change in rainfall; Floods in Maharashtra and North Bihar, rockfalls and cloudbursts in Himachal Pradesh, extreme rainfall in two districts of Goa and Uttarakhand, all collectively indicate an increasing intensity of extreme weather events in the Indian landscape.

The increase in precipitation, in the first order, is caused by an increase in water vapor in the air as the climate warms. But the partially weak diffusion does not change. Changes in rainfall of the latter dominate the regional pattern. This study is published in Science Advances.

Rapid change in rainfall

Experts have warned that we can no longer ignore the impact of climate change, as it is going to become a part of our daily routine. He says that with the increase in global temperature, monsoon rains will increase further.

“For every degree Celsius of warming, there will be an increase in monsoon rainfall by about 5 percent. Global warming is increasing the monsoon rainfall in India more than ever before,” according to a recent study, ‘Climate Change during the Indian monsoon season. making. More chaotic' by Germany's Potsdam Institute for Climate Impact Research.

“It dominates the monsoon dynamics of the 21st century. Climate change is leading to unpredictable weather extremes and their dire consequences. What is really on the line is the socio-economic well-being of the Indian subcontinent. A more chaotic monsoon season has become this. There is a threat to agriculture and the economy in the region and there should be a wake-up call for policymakers to drastically cut greenhouse gas emissions around the world," the study warned.

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Global warming

Himachal Pradesh reported a landslide on July 25, killing nine and injuring several. There have been continuous reports of landslides in Uttarakhand since the beginning of the month. According to the Relief and Rehabilitation Department, Maharashtra, since July 22, with record-breaking rains lashing parts of the west coast, 164 deaths have occurred till July 26 and 25,564 animals have died in a total of 1,028 villages. It further said: "About 2,29,074 people were evacuated from the flood-affected areas."

Scientists have said that due to global warming around the world, there will be a lot of change in rainfall in areas with moisture. He said that the surface air temperature is increasing by 1 to 3 percent per degree. Due to which there will be considerable fluctuations between dry and humid conditions. The study was led by the Chinese Academy of Sciences (CAS).

It is well known that excess rainfall causes floods and less rainfall causes droughts. Researchers discovered decades ago that global warming has increased rainfall on average. How this growth happens at a given point in time matters a lot. A 2 to 3 percent increase in annual rainfall that occurs evenly throughout the year may not make much difference, but if it happens over a week or a day, it can be catastrophic.

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Conditions and changes in rainfall

The scientists said that they have used state-of-the-art climate model simulations in this study. which highlights the magnitude of change in rainfall over a time scale ranging from every day to several years. Scientists have found that as global temperatures rise in the future, climate-related moisture regions – including tropics, monsoon regions, and mid to high latitudes – will not only become very humid but will also change significantly in moisture and drier conditions.

Considering changes in both mean conditions and changes in rainfall provides a new perspective for future research to understand changes in precipitation. Zhang Wenxia said about two-thirds of the land will face more moisture and more changes in climate, while the rest of the land area is projected to face more changes in the form of drought. It is valuable for different rain-related variations arrangements. 

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