STEM与日常科技·英语30篇（3）
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Coriolis Force and Hurricane Rotation Direction
科里奥利力与飓风旋转方向
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Earth's rotation causes moving air and water to deflect right in the Northern Hemisphere.地球自转导致北半球的运动空气和水体向右偏转。
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This apparent deflection is called the Coriolis force, though it's not a real force but an effect of inertia.这种表观偏转称为科里奥利力，但它并非真实存在的力，而是惯性效应。
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In the Southern Hemisphere, winds deflect left, making cyclones spin clockwise instead of counterclockwise.在南半球，风向左偏转，使气旋呈顺时针旋转而非逆时针。
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Hurricanes form only where warm ocean water fuels rising moist air near the equator.飓风仅在赤道附近温暖海面为上升湿空气提供能量的区域形成。
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But they cannot develop exactly on the equator because the Coriolis effect vanishes there.但它们无法在赤道上直接生成，因为赤道处科里奥利效应消失。
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As storm systems grow, the Coriolis force organizes wind into tight rotating spirals.随着风暴系统发展，科里奥利力将风组织成紧密的旋转螺旋结构。
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Meteorologists use this principle to forecast storm paths and intensities accurately.气象学家利用这一原理准确预测风暴路径和强度。
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Small-scale weather events like tornadoes are too brief for Coriolis influence to dominate.龙卷风等小尺度天气现象持续时间太短，科里奥利效应难以主导。
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Ocean currents also follow this rule, forming large rotating gyres in each hemisphere.洋流也遵循这一规律，在南北半球分别形成大型旋转环流。
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Understanding this helps explain why typhoons in Asia spin the same way as Atlantic hurricanes.理解这一点有助于解释为何亚洲台风与大西洋飓风旋转方向相同。