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प्रश्न
Give an account of the distribution of annual rainfall in India.
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उत्तर
The average annual rainfall of India is 110 cm. Regional variations in the distribution are found due to differences in relief of the country. Rainfall is unevenly distributed throughout the country. India can be divided into the following rainfall regions:
- Areas of Heavy Rainfall (more than 200 cm annually):
- Western Coast: Coastal regions like Kerala, Goa, and Maharashtra receive heavy rainfall due to proximity to the Arabian Sea.
- Western Ghats: The Windward side, especially Konkani and Malabar, experiences high rainfall due to orographic lifting.
- Northeast India: States like Meghalaya, Assam, Nagaland, and Manipur receive extremely high rainfall. Mawsynram and Cherrapunji in Meghalaya are among the wettest places on Earth.
- Areas of Moderate Rainfall (100-200 cm annually):
- West Bengal, Orissa, Bihar, Eastern Uttar Pradesh, and Madhya Pradesh experience moderate rainfall.
- Coastal Tamil Nadu: Receives moderate rainfall from the northeast monsoon (October–December).
- Areas of Very Little Rainfall (less than 50 cm annually):
- Western Rajasthan: The Thar Desert receives less than 250 mm of rainfall annually.
- Jammu and Kashmir: The Leh-Ladakh region receives very little precipitation, mostly in the form of snow.
APPEARS IN
संबंधित प्रश्न
Mention the different sources of rain in Punjab and Tamil Nadu during the winter season.
Give reasons for the following:
When the Malabar Coast is receiving heavy rainfall in July, the Tamil Nadu coast is comparatively dry.
Study the climate data given below and answer the questions that follow:
| Month | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| Temperature in °C |
23.1 | 24.8 | 26.5 | 29.2 | 32 | 32.8 | 33.1 | 32.1 | 30.5 | 29.3 | 28.7 | 26.1 |
| Rainfall cm | 15.3 | 10.1 | 0.3 | 0.1 | 1.3 | 4.5 | 6.1 | 10.2 | 10.5 | 20.1 | 16.8 | 19.0 |
- Calculate the annual rainfall experienced by the station.
- Suggest the name of this station, giving a reason for your answer.
- Name the season during which the rainfall is heaviest.
What are ‘Western Disturbances’?
Mention why does sub-continent have Tropical Monsoon climate.
Western coastal plains receive more rainfall than the Eastern coastal plains.
Study the climatic data provided below and answer the questions that follow:
| Month | Jan | Feb | Mar | Apr | May | June | Jul | Aug | Sep | Oct | Nov | Dec |
| Station A (sea level) | ||||||||||||
| Temperature (°C) | 24.4 | 28.4 | 20.7 | 29.3 | 30.0 | 29.9 | 29.8 | 27.8 | 26.9 | 26.3 | 25.1 | 24.8 |
| Rainfall (cm) | 0.1 | 0.1 | 0.5 | 0.6 | 3.8 | 26.6 | 29.6 | 30.5 | 26.5 | 11.9 | 1.1 | 0.2 |
| Station B (800 m above sea level) | ||||||||||||
| Temperature (°C) | 8.1 | 8.9 | 15.6 | 20.1. | 25.2 | 24.3 | 24.1 | 22.7 | 20.6 | 18.4 | 14.1 | 9.6 |
| Rainfall (cm) | 0.4 | 0.3 | 0.3 | 1.1 | 1.3 | 3.2 | 7.7 | 1.3 | 5.8 | 0.7 | 0.4 | 0.3 |
- Calculate the annual range of temperature of Station A Suggest a reason why the range is small one.
- Which of the two Stations has the lower temperature? Why?
- Calculate the annual rainfall of Station B.
Give one example of ‘Rain Shadow’ areas in India.
Seventy-five percentage of Indian rainfall is from this wind.
What is the source of winter rainfall in Tamil Nadu?
