Q2 (CDS-II/2011) Geography › World Physical Geography › Atmospheric pressure winds Answer Verified

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.

Both the statements are individually true and statement II is the correct explanation of statement I

Both the statements are individually true but statement II is not the correct explanation of statement I

Statement I is true but statement II is false

Statement I is false but statement II is true

Result

Your answer: — · Correct: A

Explanation

Statement I is correct as anticyclones are high-pressure systems characterized by light winds and stable, settled weather conditions with minimal cloud formation [c1][t3]. They typically herald fine weather, clear skies, and calm air, lasting for days or weeks without significant change [c1][t1]. Statement II provides the correct explanation for this stability. In an anticyclone, air descends (subsides) from the upper troposphere, creating high pressure at the surface [c2][c4]. This sinking air compresses and warms, which inhibits the formation of clouds and precipitation [t4][t5]. At the surface, the air moves outward (diverges) from the high-pressure center [c4][t1]. This combination of subsidence and surface divergence prevents the vertical uplift necessary for atmospheric disturbances, thereby maintaining stable weather conditions [c2][t6]. Thus, the outward movement and sinking motion are the physical mechanisms that limit weather disturbances.

Sources

[1] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 14: Climate > Cyclonic Activity > p. 143
[2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 23: Pressure Systems and Wind System > Buoyant Force > p. 307
[3] FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 9: Atmospheric Circulation and Weather Systems > Pressure and Wind > p. 79
[4] https://www.weather.gov/media/zhu/ZHU_Training_Page/Miscellaneous/cyclones_anticyclones/cyclones.pdf
[6] https://www.britannica.com/science/climate-meteorology/Anticyclones

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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.

Explanation

SIMILAR QUESTIONS

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:

Statement I : The Doldrums is a low pressure area around the Equator where the prevailing winds are calm Statement I : Low pressure is caused by the heat at the Equator which makes the air rise and travel both Northwards and Southwards

Statement I : Pressure gradients determine the velocity of winds. Statement II : When isobars (lines of equal atmospheric pressure) are closely spaced, the wi nd velocity would be gentle.

Statement I: During the day, winds blow from sea to land. Statement II : The land gets more heated than the surrounding sea, hence lower pressure develops over land as compared to sea.