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What does driest eye of a hurricane mean
The phrase "driest eye of a hurricane" refers to
the part of the storm's core where the air is the most stable, warmest, and has the lowest humidity. This condition is a result of unique atmospheric circulation within the eye that creates a pocket of descending, moisture-free air.
Why the eye of a hurricane is the driest
- Sinking air: In the powerful thunderstorms of the hurricane's eyewall, warm, moist air rises and creates clouds and precipitation. In contrast, some air is also forced to sink in the eye itself. This descending air suppresses cloud formation and produces a calm, clear zone at the center of the storm.
- Adiabatic warming: As the air sinks, it undergoes adiabatic warming, which means it heats up as it is compressed. This warming causes the relative humidity to drop dramatically, making the air very dry.
- Centrifugal forces: The intense rotation of the storm generates powerful centrifugal forces. These forces push moisture away from the eye's center and toward the towering thunderstorms of the eyewall, further drying out the center.
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