2种边界层参数化方案对1013号超强台风'鲇鱼'数值模拟的敏感性研究

摘要

利用中国台湾地区"侵台台风之飞机侦察及投落送观测实验(DOTSTAR)"探空数据与WRF模式(3.8版本),针对1013号超强台风"鲇鱼"开展了边界层参数化方案的数值模拟敏感性研究.结果表明,非局地YSU方案在台风强度、路径、螺旋雨带、内核尺度以及台风外围位温、水汽混合比、风向这些方面的模拟效果优于局地MYNN2方案;但在风速的模拟上,YSU方案与MYNN2方案没有明显的优劣之分.%Using the dropsonde data from Dropwindsonde Observations for Typhoon Surveillance near the Taiwan Region (DOTSTAR) and the WRF model (version 3.8), sensitivity research of planetary boundary layer parameterization schemes in numerical simulation of super typhoon "Megi" was carried out.The result showed that the non-local YSU scheme was more capable of simulating typhoon intensity, track, spiral rain band, inner-core size and typhoon periphery structure of potential temperature, water vapor mixing ratio, wind direction than the local MYNN2 scheme.However, there was no obvious difference between YSU and MYNN2 in the simulation of wind speed.