几种台风初始化方法及其对比实验  

Three Typhoon Initialization Schemes and Comparison Experiments

作　　者：王益柏[1] 费建芳[1] 张根生[1] 

机构地区：[1]解放军理工大学气象学院,南京211101

出　　处：《气象》2006年第2期3-8,共6页Meteorological Monthly

摘　　要：利用中尺度MM5V3模式及其伴随系统,运用四维变分同化方法,将Bogus台风作为观测资料进而优化台风初始场,对0422号台风个例进行了数值模拟和试验,并与传统Bogus方法和Nudging方法进行比较。结果表明,经过BDA方案优化的台风初始场更加接近实际台风的结构,有效地提高了台风路径和强度预报的准确率。With MM5V3 and its adjoint system, the bogus vortex and the method of 4DVAR are used to generate an optimal initial condition of the typhoon Ma-on, compared with the initialization schemes of traditional Bogussing and Nudging. The results show that the optimal initial field produced by BDA scheme is closer to the observations and the forecast accuracy for both track and intensity is improved effectively.

关 键 词：四维变分资料同化 台风数值模拟 牛顿松弛法 BDA方案 

分 类 号：P457.8[天文地球—大气科学及气象学] S762[农业科学—森林保护学]