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海岸锋生的数值试验

, PP. 25-36

Keywords: 海岸锋生,数值试验

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Abstract:

本文利用二维中尺度模式研究了寒潮爆发时,背景风场和下垫面特性对大陆东海岸海岸锋生的影响.数值试验结果表明,海岸锋生主要发生在夜间和地面附近.背景风场为东风时,它有利于海岸低层锋生,背景风场为西风时,它不利于海岸低层锋生,背景风的垂直切变对海岸锋生有着重要的影响.海气温差增加,夜间海岸低层锋生加强.海岸陆地斜坡角较小时,海岸斜坡地形对海岸锋生影响较小.锋生机制分析表明,影响海岸锋生的主要因子是速度水平变形场.

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