摘要
采用区域性大气边界层诊断模式 ,将大气边界层分为 2层 ,即近地面层和埃克曼层 ,并由相似原理得到近地面层和埃克曼层的风速廓线弥合 ,形成海面逐时风场 ;同时 ,考虑到热带气旋 (以下简称台风 )天气系统的动力学特征 ,采用台风模型风场修正其影响区域的风场 ,考虑到风场和气压场之间的对应关系 ,经变分调整得到较为合理的海面逐时风场。通过检验 ,结果令人满意 ;后又将此模式并作为一个模块嵌入研制的《船用防避台风决策系统》中 ,分别推广应用于北太平洋航行的 2 1艘船舶及中远系统的 6个安监处 ,几年来的推广应用表明 :完全满足航海精度的要求 ,效果良好。
In this paper, by adopting regional atmospheric boundary layer diagnostic mode, the atmospheric boundary layer is divided into two levels, i.e. lower ground level and Eijkman level. The wind velocity contour lines in conjunction with the two levels can be obtained from similarity principle and the sea surface successive time wind field is formed. Being considered the dynamic features of tropical cyclone (abbr. typhoon below) weather system, typhoon model wind fields are applied to correct the wind fields iinfluenced by typhoon. Then, a corresponding relationship between the wind field and the barometric field is used to acquire comparatively reasonable sea successive time wind field with variation adjustment. The satisfactory forecast results have been proved through practical survey. This mode is then inserted as a module into the “marine strategic system of typhoon prevention and avoidance” and is applied in 21 vessels sailing on the north Pacific Ocean and six COSCO safety monitoring departments. Its popularization and application in recent years indicates that this forecast mode can completely meet the requirements of navigational precision.
出处
《中国航海》
CSCD
北大核心
2003年第3期65-67,35,共4页
Navigation of China
