What is the phenomenon of ‘cloudbursts’? Explain.
A 'cloudburst' refers to an extreme weather event characterized by an intense, very short-duration, and highly localized downpour of rain. Imagine a large bucket of water suddenly overturning, rather than a steady drizzle; that's akin to a cloudburst. While there isn't one universal definition, it typically involves rainfall exceeding 100 millimeters per hour over a small area, often just a few square kilometres.
This violent deluge occurs when a massive amount of moisture-laden air rises rapidly, leading to the formation of towering cumulonimbus clouds. When these clouds become saturated and their internal uplift mechanism can no longer support the immense volume of condensed water, often trapped orographically by mountains, the entire accumulated water column suddenly collapses. Instead of spreading out, the concentrated mass of water descends catastrophically within a short span, leading to flash floods, landslides, and significant devastation, particularly in hilly terrains.
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Important Questions from GS1
How far is it correct to say that the First World War was fought essentially for the preservation of the balance of power?
How far was the Industrial Revolution in England responsible for the decline of handicrafts and cottage industries in India?
The groundwater potential of the Gangetic valley is on a serious decline. How may it affect the food security of India?
What are aurora australis and aurora borealis? How are these triggered?
What is a twister? Why are the majority of twisters observed in areas around the Gulf of Mexico?
