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Q78 (NDA-II/2022) Geography › World Physical Geography › Atmospheric pressure winds

Consider the following statements about anticyclones : 1. Anticyclones are high pressure systems. 2. Air in the centre of the system must be subsiding. 3. Anticyclones are characterized by converging winds. How many of the above statements is/are correct?

Result
Your answer: —  Â·  Correct: B
Explanation

Anticyclones are high-pressure systems characterized by specific atmospheric dynamics [1][4]. Statement 1 is correct as anticyclones are defined by high pressure at the center with a gentle pressure gradient [1][3]. Statement 2 is also correct; in an anticyclone, air must subside (sink) from above toward the surface to maintain the high-pressure system [2][4]. This sinking motion leads to stable conditions and clear skies [1][3]. Statement 3 is incorrect because anticyclones are characterized by diverging winds at the surface, where air moves outward from the center [2][4]. Convergence in an anticyclone occurs only in the upper troposphere to feed the subsiding air column, while surface winds flow clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere [3][4]. Therefore, only two statements (1 and 2) are correct.

Sources

  1. [1] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 14: Climate > Cyclonic Activity > p. 143
  2. [4] FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 9: Atmospheric Circulation and Weather Systems > Pressure and Wind > p. 79
  3. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 23: Pressure Systems and Wind System > Centripetal Acceleration > p. 309
  4. [2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 23: Pressure Systems and Wind System > Buoyant Force > p. 307
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SIMILAR QUESTIONS

CDS-II · 2011 · Q2 Relevance score: 11.33(s)

Statement I : Anticyclone, which is a high pressure wind system, does not bring about significant change in weather condition. Statement II : The outward movement of wind from the high pressure center keeps limited scope for weather disturbance.

NDA-II · 2008 · Q31 Relevance score: 9.92(s)

Which of the following statements characterise the anticyclones? 1. Anticyclones are low pressure systems. 2. They are characterised by divergent wind circulation. 3. They are indicative of dry weather conditions. Select the correct answer using the code given below:

CDS-II · 2008 · Q43 Relevance score: 9.09(s)

Assertion (A) : In temperate cyclones winds below from the periphery towards its centre. Reason (R) : There is high pressure in the centre of temperate cyclone.

CDS-I · 2013 · Q75 Relevance score: 7.05(s)

The planetary winds that blow from the subtropical high- pressure belts to the Equator are known as—

IAS · 2002 · Q149 Relevance score: 7.05(s)

Assertion (A) : The surface winds spiral inwards upon the centre of the cyclone. Reason (R) : Air descends in the centre of the cyclone.