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Question
Give an account of weather conditions and characteristics of the cold season.
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Solution
The Cold Weather Season
Beginning from mid-November, the winter season lasts till February. The weather is usually marked by clear sky, low temperatures and low humidity, and feeble and variable winds. The temperature decreases from the south to the north, with the peninsular region not showing any noticeable seasonal change in temperature pattern due to the moderating influence of the sea. The coldest months are December and January. The days are generally warm and the nights are cold. Frost is common in the north and the higher slopes of the Himalayas experience snowfall.
During this season, the sub-tropical westerly jet streams blowing south of the Himalayas bring in cyclonic disturbances from the Mediterranean region. These cause winter rains over the plains and snowfall in the mountains. The Tamil Nadu coast also receives winter rainfall due to the blowing of the north-east trade winds from sea to land.
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RELATED QUESTIONS
How is the winter rainfall of the northwest part of India different from the winter rainfall of the southeast part of India?
Study the climatic data of station x given below and answer the questions that follow:
| Month | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| Temperature in °C |
24.5 | 25.7 | 27.7 | 28.4 | 30.0 | 36.2 | 31.0 | 30.2 | 29.8 | 28.0 | 25.9 | 24.7 |
| Rainfall cm | 4.6 | 1.6 | 1.7 | 2.4 | 2.8 | 4.6 | 8.6 | 11.4 | 11.8 | 30.6 | 35.0 | 13.9 |
- Calculate the total annual rainfall experienced by the station.
- What is the annual range of temperature?
- On which coast of India does the station lie? Give the reason for your answer.
- Name two rainiest stations.
- Name two driest stations.
- Two stations with the most equable climate.
- Two stations with the most extreme climate.
- Two stations are most influenced by the Arabian branch of southwest monsoons.
- Two stations are most influenced by the Bay of Bengal branch of south-west monsoons.
- Two stations influenced by both branches of the south-west monsoons
- Two stations influenced by retreating and north-east monsoons.
- Two stations are receiving winter showers from the western disturbances.
- The two hottest stations in the months of
- February
- April
- May
- June
Which type of climate is experienced in the Northern Plains of India? State one main characteristic of this type of climate.
Central Maharashtra receives little rainfall.
Mumbai receives rainfall in the summer season while Chennai receives rainfall from October to December. Why?
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 | Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sep. | Oct. | Nov. | Dec. |
| Temperature °C | 24.5 | 25.7 | 27.7 | 20-4 | 30.0 | 32.5 | 31.0 | 30.2 | 29.8 | 28.0 | 25.9 | 24.7 |
| Rainfall cm | 4.6 | 1.3 | 1.3 | 1.8 | 3.8 | 4.5 | 8.7 | 11.3 | 11.9 | 30.6 | 35.0 | 13.9 |
- Calculate the annual rainfall experienced by the station.
- What is the annual range of temperature?
- Name the wettest month.
Give reasons for the following topic:
Kolkatta receives more rainfall than Bikaner in Rajasthan.
Now find out
Why is July rainier in Mumbai than in Thiruvananthapuram?
