• 2018-02-23 星期五
•  doi:  10.3878/j.issn.1006-9895.1712.17201 非静力AREM设计及其数值模拟Part II：数值模拟试验 Design of Non-hydrostatic AREM and its Numerical Simulation Part II: Numerical Simulation Experiments 摘要点击 136  全文点击 28  投稿时间：2017-07-25  修订日期：2017-10-17 查看HTML全文  查看全文  查看/发表评论  下载PDF阅读器 基金: 中文关键词:  AREM模式,非静力动力框架,理想试验,台风模拟,降水检验 英文关键词:  AREM, non-hydrostatic dynamic core, idealized experiment, typhoon simulation, precipitation test 引用:程锐,宇如聪.2018.非静力AREM设计及其数值模拟Part II：数值模拟试验[J].大气科学 Citation:CHENG Rui,YU Rucong.2018.Design of Non-hydrostatic AREM and its Numerical Simulation Part II: Numerical Simulation Experiments[J].Chinese Journal of Atmospheric Sciences (in Chinese) 中文摘要: 上节,我们完成了非静力AREM(Advanced Regional Eta-coordinate Model)动力框架设计。本节将通过理想和实例试验检验其模拟能力。其中理想试验通过与国际成熟的中尺度非静力框架数值试验结果的比较,直接检验非静力AREM三维动力框架在细致分辨率(~1km)下的模拟性能。可以看出,非静力AREM和ARPS (Advanced Regional Prediction System)、WRF(Weather Research and Forecasting Model)模拟出类似的积云对流结构及演变特征,从而基本确证了本文发展的非静力框架的正确性。结合原静力平衡模式的初始化和物理参数化过程,形成非静力AREM模式系统。通过台风个例试验分析及降水批量试验检验的方式,对非静力AREM模式性能进行了进一步的验证。 Abstract: The design of non-hydrostatic core for Advanced Regional Eta-coordinate Model (AREM) was presented in part I of the paper. The non-hydrostatic version of AREM is tested through the idealized and real-data numerical experiments in this part. Firstly, we carry out high resolution idealized simulation (~1km ) to compare the non-hydrostatic core of AREM with advanced non-hydrostatic frames commonly used for research and operational forecasting. It can be seen that non-hydrostatic cores of AREM, Advanced Regional Prediction System (ARPS) and Weather Research and Forecasting Model (WRF) similarly simulate structural and evolutional features for convection, which basically proves the soundness and validity of the non-hydrostatic dynamic core of AREM. In association with the existing initialization techniques and physical packages of current hydrostatic model, non-hydrostatic AREM has capability of real-data simulation. Then the typhoon Rananim (2004) is simulated using this non-hydrostatic model and verified against various observations. Finally, the non-hydrostatic version of AREM is evaluated through quantitative testing on the precipitation hindcasting in July of 2010. The real-data simulation reveals that the non-hydrostatic AREM can reproduce the hydrostatic simulation at lower resolution (for example, 37km) and it can outperform the hydrostatic version of AREM at finer resolution (for instance, 8km).
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