作　　者： ; ; ; ; ;

机构地区： 中国科学院海洋研究所

出　　处： 《电波科学学报》 2009年第2期259-263,共5页

摘　　要： 以NCEP再分析资料为背景场,利用MM5模式对2005年6月2日至4日出现在黄海海域的大气波导进行了数值模拟。通过与韩国济州岛、日本福冈的探空数据和文献描述的雷达以及通信超视距传播现象的对比,分析了波导强度等参数的时空演变过程,结果表明:MM5模式模拟的修正折射率廓线与探空数据有较好的一致性,其模拟的大气波导产生、维持、消亡过程与文献给出的超视距传播现象相对应。 The atmospheric duct process in the Yellow Sea area from Jun 2 to Jun 4 in 2005 is simulated numerically with MM5 atmospheric model and the initial fields obtained from NCEP reanalysis data. The temporal and spatial evolution of the duct development is analysed by comparing with radiosonde data measured at Chejudao of Korea and Fukuoka of Japan and the trans-horizontal propagation phenomena observed by radar and communication systems depicted in the literature. The compared results show that the modified refractivity profiles have good agreement with measured results and the duct process from occurring, maintaining to dying out is consistent with the observed trans-horizontal propagation phenomena.

关 键 词： 大气波导 模式 数值模拟

领　　域： [电子电信]