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Heavy rain, poor drainage, worst infrared – how It was Bengaluru hit In a severe storm and drowned

Bengaluru: In the past week, weather news control in Country through visuals of Bengaluru floods. The torrential rains, which started on Sunday night and continued into Monday morning, led to flooding as high levels of The water has been flooded on a city starving of Drains and emptying of natural water bodies.

The flood was immediate and severe, leading to me people Wading into the water in minutes. big portions of The city She was immersed.

in just 12 hoursThe city Received 13.16 cm of rain according to meteorology office. Many areas were under knee-deep water up to waist level. The lower areas were completely flooded, with The residents are stranded and need to be evacuated by tractors and boats. The city Monday stopped.

Historically, Bengaluru receives about 970-990 mm of annually, and is subjected primarily to evening bathing through second half of The year. The rainiest months are August, September and October, and the average annual precipitation from 1981 to 2010 is 986.1 mm.

this is yearThe city she has already Received 1466.6 mm of rain.

Heavy rain fell by two main Atmospheric dynamics – larger climate pattern of rapid warming year by yearand the more localized weather pattern over Bengaluru, which was exacerbated by the rain that very night.


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Wind shear area and air humidity

Bengaluru is receiving moderate rains this time of The year.

During the monsoon season, city Most of the rain falls during the monsoons over Vineet Kumar Singh, a postdoctoral researcher at the Typhoon Research Center, explained that the Indian core monsoon region is faint. in Jeju National University, South Korea.

subdue or weaken of monsoon in heartbeats through active The monsoon season is a natural event due to weather wave patterns. during active In monsoon conditions, strong westerly winds blow from the west. During the resting state, these winds weaken, often becoming similar to the east wind.

is during this times You receive Bengaluru more quantities of Singh said it rains during the monsoons.

population of A flood affected colony in Rescue of Bengaluru by the Flood Relief Task Force personnel | Ani

on Sunday evening, changes in These wind patterns triggered squad of What is known as the wind shear area? over The city.

Shear areas where there is wind moving in in opposite directions of a regionleave the type of Neutral Zone in between.

Bengaluru had western regions to its south and east to the east and north creating shear area. This enhances the instability in the atmosphere with Very weak wind. In addition, the region also The weather was humid because of of monsoon season. resulted in in favorable condition for Local convection and therefore heavy precipitation,” Singh explained.

However, this rainfall was not an anomaly.

“Precipitation is expected and very much within acceptable limits range (as heavy rain), although it deviated significantly from the normal rain at this time of The year,” said Dr. P Mukhopadhyay, a monsoon modeling expert at the Indian Institute of Tropical Meteorology, Pune.

The rain was worse this time of The year Previously, “Hu addedwith reference to the two previous records for rainy days in September – 18 cm in 1988 and 13.23 cm in 2014. “However, the city The water has never been so submerged. The reason for Flood is the shortage of Drainage and infrastructure, not density of He explained “rain”.

Waterbodies in The city It was steadily degrading for Several years now, with Many citizens are sounding the alarm at the disappearance of lakes and reduced Purification of Rain water in the ground. In 2019, Bengaluru Civic City body announced They plan to remap the parts of The city After satellite images revealed an “exponential urbanization”, the authority did not collect taxes from it.

Effect of global heating

all translated weather It gets worse every day due to rapid warming of The earth. While Bengaluru was under heavy rain, Pakistan continued to be affected by floods, as well as parts of it of America, Africa and Asia.

Meanwhile, Europe, China and many other places are experiencing record drought with The rivers are completely drying up up in a way Never seen before.

Precipitation is expected to increase worldwide in terms of Severe because the warm weather evaporates more water and carry more Precipitation, thus dumping large amounts of Water with severe intensity and in short periods of time.

Precipitation in Bengaluru is constant all over yearbut it does not reach the size of Is raining in Coastal cities like Mumbai, Chennai or Kolkata. see september highest Precipitation, followed by October and August, then May to July.

April and November, which precede and follow the monsoon, receive light shower, but everything of This is now changing.

In Bengaluru, the data shows That annual precipitation indeed increasing.

The standard Rainfall rate in India is calculated by the Indian Meteorological Service (IMD), and is called the Long Period Average (LPA). It is the average rainfall between 1981 and 2010. Bengaluru’s LPA is 986.1 mm, but since 2010, rainfall has decreased in excess of LPA. In both 2020 and 2021, average precipitation was measured in over 1200 mm

The average precipitation between 2010 and 2021 was 1146.62 mm, or 16 percent over LPA for The city. With the increase of heavy rainfall, along with Uncontrolled and unplanned construction without facilitating the absorption of water into the ground, the city Mature for Flood increase with Every cloudburst or even above average precipitation.

“when we were use hardware, we know That there is a safe effort range they can work in. The voltages then damage and break the devices. The same will happen to our infrastructure in “The coming years,” Mukhopadhyay said.

(Edited by Bulumi Banerjee)


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