Which one of the following factors is NOT connected with planetary win

Which one of the following factors is NOT connected with planetary wind system ?

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Latitudinal variation of the atmospheric heating

Emergence of the pressure belt

Earth's revolution around the Sun

Migration of the pressure belts due to apparent path of the Sun

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Answer is Wrong!

This question was previously asked in

UPSC CAPF – 2015

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The planetary wind system is primarily driven by differential heating of the Earth’s surface (A), leading to pressure gradients (B) and the formation of pressure belts, modified by the Earth’s rotation (Coriolis effect, not listed). The Earth’s revolution around the Sun (C), combined with axial tilt, causes seasons and the apparent migration of pressure belts (D), which significantly affects the seasonal patterns of planetary winds. However, options A, B, and D describe atmospheric or climatological conditions/effects directly linked to the *system’s operation and seasonal variation*. Option C, Earth’s revolution itself, is the astronomical cause *leading* to the effect described in D. While connected, it can be considered less directly connected to the *atmospheric dynamics* of the wind system compared to the atmospheric heating (A), pressure belts (B), and their migration (D).

Planetary winds are driven by atmospheric pressure differences resulting from uneven heating and shaped by Earth’s rotation. Seasonal variations are caused by Earth’s revolution and tilt. Options A, B, and D are direct meteorological factors or features of the planetary wind system, while C is the astronomical cause of one of these factors (migration of belts).

The fundamental drivers of the general atmospheric circulation (planetary winds) are the unequal heating of the Earth’s surface between the equator and poles and the Earth’s rotation. Pressure belts form as a consequence of this heating distribution and the resulting air movements. The tilt of Earth’s axis and its revolution around the sun cause the seasons and the shifting of these belts and associated wind systems throughout the year.

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