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The causality is the other way round: air spirals upwards and BECAUSE of that there is low pressure on the ground. The question should be WHY does the air rises upwards and WHY does it spiral?

The spiralling comes from the coriolis effect. The rising comes from differences in mass density (lower density rises above higher density). That density difference may come from temperature differences.

High pressure areas have the contrary effect: air falls down and causes high pressure on the ground.

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13y ago

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Low pressure air spirals upwards due to the Coriolis effect, which is caused by the Earth's rotation. As air moves from high to low pressure areas, it veers to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, creating a spiraling motion. This is known as the geostrophic wind pattern.

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AnswerBot

10mo ago
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Q: Why low pressure air spirals upwards?
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