Why rains have been so deadly in India this year

The monsoon winds in India turned.

Half of the country is reeling under the floods after extraordinary rains, as Punjab faces its worst flood since 1988.

The Indian Meteorological Department (IMD) says that some parts of Punjab, Harrana and Rajastan have witnessed rain more than 1,000 % of usual in only 24 hours.

Between August 28 and September 3, rain in northwestern India was 180 % higher than average, and in the south, it was 73 %.

It is expected that more heavy rains across large parts of the country this week.

Rain caused landslides and floods in several parts of the country, immersing villages and towns and killing hundreds.

But how does rain become very intense?

The climate crisis changes the behavior of seasonal winds.

Scientists say that one of the main changes is that there is a greater amount of moisture in the air now, than both the Indian Ocean and the Arabian Sea because of the warmer climate.

Also, in the past, seasonal winds were fixed and spread evenly during the four months – June, July, August and September. But meteorologists say they have noticed that the rain is often located in huge folders inside a small area in a short period of time after a long dry talisman.

Experts say this happens increasingly in mountainous areas where huge clouds loaded with humidity hit the hills, and the flow of huge amounts of rain quickly in a small area – a phenomenon known as Cloudburst.

This was one of the main reasons for ruin in the states of the Himalayan Mountains in Uttrantal, Kashmir, which is treated by Indian and Himachal Pradesh during the first week of August.

But the reasons change when traveling to the south from the states of the Himalayas.

In August, the long heavy rains and even very heavy rains such as Punjab and Haryana were for several days.

Meteorologists say that it was due to the interaction between the seasonal wind system already in the Indian subcontinent and western turmoil, a low pressure system that stems in the Mediterranean region and travels east.

This western disorder often carries a mass of cold air from the upper levels of the atmosphere, and when it meets the relatively warmer and humid air at lower levels – such as the current monsoon – it can lead to intense weather activity.

“It is the result of” Tango in the atmosphere “rare” between monsoons and Western turmoil, “said Akshay Duras, a research scientist at the Meteorological Department at the University of Reading in the United Kingdom.

“Think of the monsoon winds as a loaded water cannon, and Western turmoil as an operator,” he explained. He said that this trigger was pulled strongly, and slid several northern states.

IMD has also confirmed that severe rain for a sustainable period in northern India and other parts of the country was mainly due to the clash of the monsoon wind system and Western turmoil.

“Such interactions during the seasonal peak season are not common because Western turmoil is usually retreating north during this time,” said Mr. Diras.

Why did you go east this year?

Scientists put this in jet currents – narrow currents flowing quickly from the air in the upper atmosphere that travel from west to east around the world. They say global warming makes these currents increasingly “light”, which means that it is winding and does not follow a fixed path. This also affects other weather systems.

Studies have shown that wavy jet currents lead to harsh weather events all over the world, including in India recently, where the tropical aircraft stream directed Western turmoil to the far normal south to the northern parts.

“It is a vital reminder of how the world wind patterns operate the domestic monsoon dynamics, and the monsoons turned into chaos, rivers into air floods and Himalayas into a cemetery.”

Severe rain during the continuous monsoon season is a major source of floods in several parts of India. But other factors also play a role – especially when it comes to flash collapses and landslides.

Several parts of northern India and Pakistan, which are in the direction of the river course of rivers that originated in the Himalayas, have witnessed devastating floods even when there was no cloud or great rain.

Scientists offer many potential explanations – such as the explosion of the filled ice lakes filled with rapid melting of ice rivers, swelling of the underground lakes that open through cracks, and the landslides that prevent rivers that create artificial lakes that launch floods.

While the exact reasons have not yet been established, experts say the mountains have become unstable with fast ice rivers, ice fields, ice bags, and soil timing (permanent frozen land that is still hidden under the soil) due to global warming.

Skin and snow behaves like cement to maintain stable mountain slopes.

The rain is also spoiled here.

Experts say that global warming means that the rains are increasingly reported at higher arrival, as they often fall in the past, which shakes stability in the mountains with water filtering and relieving the ground.

“We are witnessing complete snowfalls that melt within a day or two when the rain falls on it and the amount of huge water flows as floods,” said Jacob Steiner, a geologist at the University of Gratz.

These factors are more complicated by human activities. Human settlements have faltered on the paths of rivers and floods, both in mountains and plains, which prevents their path.

The development of rampant infrastructure such as highways, tunnels and hydroelectric plants increases the weakening of the mountains.

Despite a warning of seasonal rains this year, river banks and old banks in many places are still unstable, while plastic waste is clogged with waterways that aim to reduce urban floods.

Experts say these issues must be addressed in time to reduce the effects and losses caused by rain and floods.

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