文献类型：期刊文献

中文题名：2008年“威马逊”台风期间海上大气波导时空特征

英文题名：Temporal and Spacial Characteristics of Atmospheric Ducts over the Sea during “Rammasun” Typhoon Period in 2008

作者：成印河[1,2];周生启[2];薛宇峰[1]

机构：[1]广东海洋大学海洋与气象学院,陆架及深远海气候,资源与环境省级重点实验室,广东湛江524088;[2]中国科学院南海海洋研究所热带海洋环境国家重点实验室,广东广州510301

年份：2012

卷号：32

期号：3

起止页码：64

中文期刊名：广东海洋大学学报

外文期刊名：Journal of Guangdong Ocean University

收录：CSTPCD

基金：国家自然科学基金项目(41106011;41176027);中国科学院海洋环流与波动重点实验室开放基金项目(KLOCAW1103)

语种：中文

中文关键词：台风;大气波导;MM5模式;天气图;红外云图

外文关键词：Typhoon; atmospheric duct; MM5 model; synoptic charts; infrared imagery

中文摘要：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。

外文摘要：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.