| 2008年“威马逊”台风期间海上大气波导时空特征 |
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| 引用本文： | 成印河,周生启,薛宇峰.2008年“威马逊”台风期间海上大气波导时空特征[J].广东海洋大学学报,2012(3):64-69. |
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| 作者姓名： | 成印河 周生启 薛宇峰 |
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| 作者单位： | 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 |
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| 基金项目： | 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) |
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| 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
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| 关 键 词： | 台风 大气波导 MM5模式 天气图 红外云图 |
Temporal and Spacial Characteristics of Atmospheric Ducts over the Sea during “Rammasun” Typhoon Period in 2008 |
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| CHENG Yin-he,ZHOU Sheng-qi,XUE Yu-feng.Temporal and Spacial Characteristics of Atmospheric Ducts over the Sea during “Rammasun” Typhoon Period in 2008[J].Journal of Zhanjiang Ocean University,2012(3):64-69. |
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| Authors: | CHENG Yin-he ZHOU Sheng-qi XUE Yu-feng |
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| Institution: | 1(1.Key Laboratory of Climate,Resources,and Environment in Continental Shelf Sea and Deep Sea,College of Ocean and Meteorology,Guangdong Ocean University,Zhanjiang 524088,China;2.LTO,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China) |
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| Abstract: | 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. |
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| Keywords: | Typhoon atmospheric duct MM5 model synoptic charts infrared imagery |
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