Geography
Explain how is the winter rain caused. How is this rain beneficial?
Climate
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Answer
The winter rain is caused by Western Disturbances in North and North-East Monsoon winds in Tamil Nadu. In northern India, rain is caused by Westerly depressions or Temperate cyclones originating in Mediterranean Sea. These rains are beneficial for rabi crops like wheat and Barley. The winter rains caused by North-East Monsoon winds brings rainfall to Tamil Nadu and parts of Andhra Pradesh. This rainfall is heavy, stormy and destructive for crops.
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Related Questions
Name the winds that bring rain to the Tamil Nadu coast.
Give reasons :
- In spite of the Aravalis many parts of Rajasthan do not receive much rain.
- The Malabar coast has less rainy months but receives more rain than Coromandal Coast.
- Punjab has three sources of rain.
- Mawsynram receives more rain than Shillong.
Refer to the Data of Chennai, Pune, New Delhi and Kolkata to answer this question.
Answer the following questions:
- Calculate the annual range of temperature.
- What is the total rainfall experienced by the station?
- When does the station receive maximum rainfall? State a reason for your answer.
Station Altitude in
MetreJ F M A M J J A S O N D Pune 559 T°C 21 22.6 26.3 29.2 29.7 27.5 25.1 24.5 24.8 25.5 22.5 20.5 R cms 0.15 0.15 0.15 1.5 2.7 11.4 16.7 9.0 13.4 9.0 2.7 0.3 Mumbai T 24.4 24.4 26.7 28.3 30.0 28.9 27.2 27.2 27.2 28.3 27.2 25.0 R 0.25 0.25 — — 1.75 50.2 61.0 37.0 27.0 4.75 1.00 — Mangaluru 22 T 26.5 26.8 28.1 29.2 29.2 26.5 26.1 26.1 26.3 26.8 27.0 26.7 R 0.28 0.18 0.52 2.89 15.7 94.18 98.8 59.74 26.62 20.7 7.24 1.29 Madurai 133 T 25.0 26.5 28.7 30.6 21.2 20.08 20.2 29.08 29.02 28.0 26.4 25.2 R 1.97 1.24 1.77 5.48 6.95 2.98 4.94 16.2 11.9 18.8 14.5 5.1 Chennai T 24.5 26 28 30 32 32.5 30.7 30 29.7 28 26 24.6 R 2.8 0.7 0.7 1.5 4.5 5.1 9.5 11.3 12.4 28.1 34.5 13.6 Srinagar 1586 T 0.3 2.6 8.3 13.1 17.7 21.9 24.4 23.8 20.2 14.0 8.1 3.3 R 7.39 7.1 9.17 9.27 1.65 3.56 5.92 6.15 3.89 2.97 1.12 3.35 New Delhi 216 T 13.8 16.6 21.6 27.8 33.2 33.6 30.9 29.8 29.2 25.7 19.7 15.2 R 2.5 2.1 1.3 0.8 1.3 7.7 17.9 18.4 12.3 1.0 0.2 1.0 Kolkata 6 T 19.4 21.7 26.7 29.4 30.6 29.4 28.9 28.3 28.3 27.2 22.8 19.4 R 0.7 2.8 3.6 4.8 14.5 30.2 31.8 32.3 25.1 10.6 1.8 0.4 Ahmedabad 50 T 21.7 23.3 27.9 31.7 33.9 33 29.8 28.5 29 29.4 26.2 22.7 R 0.15 0.2 0.13 0.13 0.99 9.3 31 20.4 106 0.89 0.36 0.1 Give reasons for the following:
- Mumbai gets more rainfall than Pune
- The moisture laden winds passing over Rajasthan do not saturate.
- S.W. monsoon withdraws from India in October/November.