大气-海浪-海流耦合模式的建立和一次台风过程的初步试验

摘要

利用Linux系统中共享内存及进程间通信技术,将广泛应用于大气、海洋、海浪研究的数值模式耦合,综合考虑了大气对海流和海浪的风力驱动、海洋对大气下垫面的改变及海浪对海洋的浪致混合作用,建立起高分辨率的中尺度台风模式.以一次台风过程为模拟背景,对2006年的＂格美＂台风进行模拟,利用可得到的观测资料,对模拟结果进行验证.结果表明：模式经过spin-up阶段后,基本能够模拟出实况台风强度的变化趋势,中心最低气压、风速和路径的模拟与实况较为一致.同时,对台风强风条件下的海面降温及海浪高度都有较为合理的再现.模式误差的出现,与当前模式微物理过程参数化方案、大尺度初始场、Bogus台风的构造及海洋模式中海洋上层物理参数化方案等相关.%The shared memory and semaphores of inter-process communication in Linux system are used as the pipeline to couple the WRF, POM and WW3 models.The forcing from atmosphere to sea and wave,the changes in atmospheric underlying surface induced by ocean and the wave-induced mixing are all involved in the high-resolution fully coupled typhoon model.The typhoon ＇KAEMI＇ is taken as a simulated example and the outcomes are compared with the available observation data to verify the good performance of the fully coupled model.The results show that after the spin-up,the coupled model could reproduce the typhoon,and the simulated surface lowest pressure,wind speed and track are all consistent with the observations.Meanwhile,the model can also have a good performance about the sea surface temperature cooling and the significant wave height.The simulated errors are related to the microphysical process parameterizations,the large initial fields,the construction of bogus typhoon and the physical process parameterization in upper ocean.