Cloudbursts are short-duration, intense rainfall events over a small area.
According to the IMD, it is a weather phenomenon with unexpected precipitation exceeding 100mm/h over a geographical region of approximately 20-30 square km.
What causes Cloudburst?
- A study published last year studied the meteorological factors behind the cloudburst over the Kedarnath region.
- The results showed that during the cloudburst, the relative humidity and cloud cover was at the maximum level with low temperature and slow winds.
- It is expected that because of this situation a high amount of clouds may get condensed at a very rapid rate and result in a cloudburst.
Impact of climate change
- Several studies have shown that climate change will increase the frequency and intensity of cloudbursts in many cities across the globe.
- As temperatures increase the atmosphere can hold more and more moisture and this moisture comes down as a short very intense rainfall for a short duration.
- This results in flash floods in the mountainous areas and urban floods in the cities.
- Also, there is evidence suggesting that globally short-duration rainfall extremes are going to become more intense and frequent.
- There is no satisfactory technique for anticipating the occurrence of cloud bursts because they develop over a small period of time.
- A very fine net work of radars is required to be able to detect the likelihood of a cloud burst and this would be expensive.
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