Advertisements
Advertisements
प्रश्न
Give an account of the distribution of annual rainfall in India.
Advertisements
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.
संबंधित प्रश्न
Study the climatic 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 |
12.0 | 25.5 | 26.3 | 27.1 | 30.0 | 36.2 | 36.0 | 35.9 | 30.3 | 28.4 | 21.0 | 16.6 |
| Rainfall cm | 1.5 | 0.1 | 0.0 | 1.4 | 1.1 | 21.0 | 25.3 | 27.2 | 24.0 | 9.4 | 1.5 | 0.4 |
1) What is the annual range of temperature of the station?
2) What is the total annual rainfall experienced by the station?
3) Why would it be correct to presume that the station lies in the interior and not on the coast?
Name the following: The local wind that brings a light rainfall to South India and is good for tea and
coffee crops.
Why are there great variations in the climate of the Indian sub-continent.
The Coromandel coast has more rainy months but less rainfall than the Konkan Coast. Why?
What is meant by a ‘Rain Shadow’ area?
Why are Himalayas called perfect climate divide? Explain their two-fold functions in this regard.
Western coastal plains receive more rainfall than the Eastern coastal plains.
Study the climatic data provided below and answer the questions that follow:
| Month | J | F | M | A | M | J | J | A | S | O | N | D |
| Station A | ||||||||||||
| Temp °C | 21.0 | 22.6 | 26.3 | 29.2 | 29.7 | 27.5 | 25.1 | 24.5 | 24.8 | 25.5 | 22.5 | 20.5 |
| Rain cm | 0.1 | 0.1 | 0.5 | 1.5 | 2.7 | 11.4 | 16.7 | 9.0 | 13.4 | 9.0 | 2.7 | 0.3 |
| Station B | ||||||||||||
| Temp °C | 24.4 | 24.4 | 26.7 | 28.3 | 30.0 | 28.9 | 27.2 | 27.2 | 27.2 | 28.3 | 27.2 | 25.0 |
| Rain cm | 0.2 | 0.3 | 0.3 | 1.7 | 1.9 | 50.2 | 61.0 | 37.0 | 27.0 | 4.8 | 1.4 | 0.3 |
(i) Calculate the annual range of temperature of Station B.
(ii) Calculate annual rainfall of Station A.
(iii) Presuming that both the stations are located in West India, state giving a reason as to which of the two lies on the windward side of the Western Ghats.
Given below is the climatic data of a station. Study the table and answer the questions that follow:
| Month | J | F | M | A | M | J | J | A | S | O | N | D |
| Temperature in Degree C. | 13.7 | 16.6 | 21.6 | 25.5 | 33.2 | 33.5 | 30.8 | 29.8 | 29.2 | 25.5 | 19.6 | 15.2 |
| Rainfall in cms. | 2.5 | 2.0 | 1.5 | 0.9 | 1.5 | 7.5 | 17.8 | 18.5 | 12.5 | 1.0 | 0.2 | 1.5 |
(i) Calculate the annual range of temperature.
(ii) What is the total rainfall experienced by the station?
(iii) Which is the driest month?
Seventy-five percentage of Indian rainfall is from this wind.
