作　　者： ; ; ;

机构地区： 广东海洋大学海洋与气象学院

出　　处： 《广东海洋大学学报》 2012年第3期64-69,共6页

摘　　要： 结合MM5数值模拟结果、天气图和卫星云图,系统分析了2008年"威马逊"台风引起的大气波导特征。本次台风过程中发生的大都为悬空大气波导,位于台风涡旋之外的西北部,台风越近波导高度、强度、厚度越大;同时数值模拟表明陆地地形对海上本次大气波导形成具有一定影响。利用大气波导这一特殊大气层结可以很好的评估和预测电磁波传播和海上探测通信系统。 Based on numerical simulation results with MM5 model, synoptic charts and satellite imagery, the ducts produced by the outer air circumfluence of the ＂Rammasun＂ Typhoon in 2008 were analyzed systematically and showed the duct characteristics. The atmospheric ducts caused by the typhoon were elevated ducts and existed on the northwest of the typhoon vortex outer. The duct parameters such as duct-height, duct-strength and duct-thickness became larger as the typhoon was approaching much nearer. Moreover the numerical simulation indicated that the land topography in the sea had some influence on the atmospheric duct occurrence over the sea. By using the atmospheric duct, the effects of the atmospheric ducts on propagation of radio waves and functions of surveillance equipments were well estimated.

关 键 词： 台风 大气波导 模式 天气图 红外云图

领　　域： [天文地球]