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OALib Journal期刊
ISSN: 2333-9721
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海洋飞沫参数化方案在台风数值模拟中的应用
Keywords: wrf模式,海洋飞沫参数化方案,台风,数值模拟
Abstract:
？海洋飞沫作为海气相互作用的重要因子,在台风的发生、发展过程中扮演着重要角色。将fairall和andreas海洋飞沫参数化方案加入到wrf模式中对两个台风——“珊珊”、“桑美”进行了模拟,以研究不同海洋飞沫参数化在wrf模式中对台风模拟效果的影响。结果表明,加入fairall方案后潜热通量、感热通量得到很大程度的加强,使得台风的热力结构得以改变,暖心结构十分明显,从而影响了动力场结构。相对涡差解释了台风移动路径变化的原因,热成散度、涡度以及水汽通量的改变影响了台风的强度。andreas方案由于界面通量算法在考虑海表面动量粗糙度、热力粗糙度及水汽粗糙度随风速、相对湿度变化的情况下,得到的潜热通量、感热通量较fairall方案为弱,因而台风的强度不强。飞沫参数化方案对模拟台风路径的影响较小。
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