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Patna receives heavier rain than Delhi.

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Patna receives heavier rain than Delhi.

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Solution 1

Patna receives heavier rain than Delhi because the Bay of Bengal branch of South-West Monsoon goes up the Ganga plain as it proceeds up the Ganga valley, the amount of rain fall keeps decreasing East to West. Since Patna is located to the east of Delhi, it receives 102 cm of rain fall while Delhi gets 50 cm of rain fall annually.

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Solution 2

The rainfall by Bay of Bengal branch decreases in quantity due to its long journey from East to West. As Patna lies on the East receives heavy rainfall and Delhi near the West, receive less. rainfall.

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Chapter 4: Climate of India - Give Reasons

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 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?


Give geographical reasons for each of the following:

The Ganga Plains gets the monsoon rain much later than the west coast of India.


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
21.0 21.9 24.3 27.1 28.0 26.4 26.1 25.4 25.0 28.0 26.0 21.2
Rainfall cm 5.1 2.8 1.2 1.7 3.9 4.6 8.4 11.4 11.9 31.6 34.5 14.8
  1. Identify the hottest month.
  2. Calculate the annual rainfall.
  3. Name the winds that bring the maximum rainfall to this city.

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
25.0 25.5 26.3 27.1 30.0 36.2 36.0 35.9 35.9 29.3 27.0 24.6
Rainfall cm 24.5 23.1 15.0 2.4 0.1 11.0 9.3 4.0 10.5 4.0 14.5 20.4

1) Calculate the annual temperature range.

2) What is the total annual rainfall?

3) Presuming that the station is located in India, give a reason for its location being on the east coast or west coast of India.


Stations Latitude Altitude (Metres) Jan. Feb. Mar. Apr. May. Jun. July. Aug. Sep. Oct. Nov. Dec. Annual Rainfall

Temperature (°C)

   

20.5

22.7

25.2

27.1

26.7

24.2

23.0

23.0

23.1

22.9

18.9

20.2

 
Bengaluru 12°58'N 909                  

 

 

 

 
Rainfall (cm)     0.7 0.9 1.1 4.5 10.7 7.1 11.1 13.7 16.4

15.3

6.1

1.3

88.9

Temperature (°C)

   

24.4

24.4

26.7

28.3

30.0

28.9

27.2

27.2

27.2

27.8

27.2

25.0

 

Mumbai

19° N 11

 

 

 

 

 

 

 

 

 

 

 

 

 

Rainfall (cm)

   

0.2

0.2

 –

1.8

50.6

61.0

36.9

26.9

4.8

1.0

 –

183.4

Temperature (°C)

   

19.6

22.0

27.1

30.1

30.4

29.9

28.9

28.7

28.9

27.6

23.4

19.7

 

Kolkata

22°34'N 6

 

 

 

 

 

 

 

 

 

 

 

 

 

Rainfall (cm)

   

1.2

2.8

3.4

 5.1

13.4

29.0

33.1

33.4

25.3

12.7

2.7

0.4

162.5

Temperature (°C)

   

14.4

16.7

23.3

30.0

33.3

33.3

30.0

29.4

28.9

25.6

19.4

15.6

 

Delhi

29° N 219

 

 

 

 

 

 

 

 

 

 

 

 

 

Rainfall (cm)

   

2.5

1.5

1.3

1.0

1.8

7.4

19.3

17.8

11.9

1.3

0.2

1.0

67.0

Temperature (°C)

   

16.8

19.2

26.6

29.8

33.3

33.9

31.3

29.0

20.1

27.0

20.1

14.9

 

Jodhpur

26°18'N 224

 

 

 

 

 

 

 

 

 

 

 

 

 

Rainfall (cm)

   

0.5

0.6

0.3

0.3

1.0

3.1

10.8

13.1

5.7

5.7

0.2

0.2

36.6

Temperature (°C)

   

24.5

25.7

27.7

30.4

33.0

32..5

31.0

30.2

29.8

28.0

25.9

24.9

 

Chennai

13°4'N 7

 

 

 

 

 

 

 

 

 

 

 

 

 

Rainfall (cm)

   

4.6

1.3

1.3

1.8

3.8

22.2

8.7

11.3

11.9

30.6

35.0

0.2

128.6

Temperature (°C)

   

21.5

23.9

28.3

32.7

35.5

32.0

27.7

27.3

27.9

26.7

23.1

20.7

 

Nagpur

21°9'N 312

 

 

 

 

 

 

 

 

 

 

 

 

 

Rainfall (cm)

   

1.1

2.3

1.7

1.6

2.1

22.2

37.6

28.6

18.5

5.5

2.0

13.9

124.2

Temperature (°C)

   

9.8

11.3

15.9

18.5

19.2

20.5

21.1

20.9

20.9

17.2

13.3

10.4

 

Shillong

24°34'N 1461

 

 

 

 

 

 

 

 

 

 

 

 

 

Rainfall (cm)

   

1.4

2.9

5.6

14.6

29.5

47.6

35.9

34.3

30.2

18.8

3.8

1.0

225.3

Temperature (°C)

   

26.7

27.3

28.3

28.7

28.6

26.6

26.2

26.2

26.5

26.7

26.6

26.5

 

Thiruvananthapuram

8°29'N 61

 

 

 

 

 

 

 

 

 

 

 

 

 

Rainfall (cm)

   

2.3

2.1

3.7

10.6

20.8

35.6

22.3

14.6

13.8

27.3

20.6

7.5

181.2

Temperature (°C)

   

−8.5

−7.2

−0.6

6.1

10.0

14.4

17.2

16.1

12.2

6.1

0.0

−5.6

 

Leh

34°N 3506

 

 

 

 

 

 

 

 

 

 

 

 

 

Rainfall (cm)

   

1.0

0.8

0.8

0.5

0.5

0.5

1.3

1.3

0.8

0.5

0.5

8.5

In above Table the average mean monthly temperatures and amounts of rainfall of ten representative stations have been given. It is for you to study on your own and convert them into ‘temperature and rainfall’ graphs. A glance at these visual representations will help you to grasp instantly the similarities and differences between them. One such graph (Figure 1) is already prepared for you. See if you can arrive at some broad generalisations about our diverse climatic conditions. 


Chennai has a lower annual range of temperature than Lucknow.


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.


Name the winds which are responsible for heavy rainfall in India.


Give reasons for the following topic:

Kolkatta receives more rainfall than Bikaner in Rajasthan.


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