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单选题(共121题,605.0分) 95.(5.0分)___is most prevalent during the fall and winter, which forms overnight as the air near the ground cools and stabilizes to reach saturation.A. Radiation fogB. Advection fogC. Frontal fogD. Steam fog

单选题(共121题,605.0分) 95.(5.0分)___is most prevalent during the fall and winter, which forms overnight as the air near the ground cools and stabilizes to reach saturation.

A. Radiation fog

B. Advection fog

C. Frontal fog

D. Steam fog

题目解答

答案

A. Radiation fog

解析

本题考查雾的分类及形成条件。关键点在于理解不同雾的形成机制与季节分布特点。辐射雾因地面辐射冷却形成,常见于晴朗、静风的秋冬夜晚;平流雾由暖湿空气流经冷地表引起;锋面雾与锋面活动相关;蒸汽雾则发生在冷空气覆盖温暖水面时。需结合季节(秋冬)和夜间冷却的条件,锁定正确答案。

选项分析

A. Radiation fog(辐射雾)

  • 形成条件:地面辐射冷却导致近地层空气温度下降,水汽凝结。
  • 季节特点:秋冬季节晴朗夜晚辐射冷却强,最易形成。
  • 符合题干:描述中“夜间空气冷却稳定”与辐射雾形成机制一致。

B. Advection fog(平流雾)

  • 形成条件:暖湿空气平流至冷地表,水汽凝结。
  • 季节特点:全年可能,但需特定地形(如沿海)。
  • 排除理由:题干未提及暖湿气流移动,季节性不突出。

C. Frontal fog(锋面雾)

  • 形成条件:锋面交汇处水汽凝结。
  • 季节特点:全年可能,与锋面活动相关。
  • 排除理由:题干未提及锋面或气流交汇。

D. Steam fog(蒸汽雾)

  • 形成条件:冷空气接触温暖水面,水汽蒸发后凝结。
  • 季节特点:秋冬可能,但局限在水域附近。
  • 排除理由:题干未限定水域环境。

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