What is western cyclonic disturbances?

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Western Cyclonic Disturbances

Western Cyclonic Disturbances (WCDs) are low-pressure systems that originate in the Mediterranean and Central Asia regions and move towards the Indian subcontinent. These disturbances are responsible for the winter rainfall in northern India and are more prominent during the months of December to February.

Formation of WCDs

WCDs are formed due to the interaction between the westerly jet stream and the easterly jet stream. The westerly jet stream carries cold and dry air from the Mediterranean region towards the Indian subcontinent. On the other hand, the easterly jet stream carries warm and moist air from the Bay of Bengal towards the Indian subcontinent. When these two air masses meet, they create a low-pressure area which triggers the formation of WCDs.

Impact of WCDs

WCDs have a significant impact on the weather patterns of northern India. They bring winter rainfall to the region, which is crucial for the growth of crops such as wheat, mustard, and barley. However, excessive rainfall can also lead to floods and landslides, causing damage to life and property.

Management of WCDs

WCDs cannot be prevented, but their impact can be mitigated through effective management practices. The government of India has set up a network of weather stations and satellite systems to monitor and track the movement of WCDs. This helps in issuing timely weather alerts and warnings to the public and helps them take appropriate measures to protect themselves and their property.

Conclusion

Western Cyclonic Disturbances play a crucial role in the winter rainfall patterns of northern India. While they are necessary for the growth of crops, they can also cause damage if not managed effectively. It is important to have a robust system in place to monitor and track the movement of WCDs and issue timely weather alerts to minimize the impact on life and property.

Answer

A Western Disturbance is an extratropical storm originating in the Mediterranean region that brings sudden winter rain to the northwestern parts of the Indian subcontinent...

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