doi:  10.3878/j.issn.1006-9895.1712.17201
非静力AREM模式设计及其数值模拟II:数值模拟试验

Design of Non-hydrostatic AREM Model and Its Numerical Simulation Part II: Numerical Simulation Experiments
摘要点击 749  全文点击 1220  投稿时间:2017-07-25  
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基金:  国家重点研发计划项目2017YFB1002702,国家自然科学基金项目91637211、61572058
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 (Advanced Regional Eta-coordinate Model)  Non-hydrostatic dynamic core  Idealized experiment  Typhoon simulation  Precipitation test
                 
作者中文名作者英文名单位
程锐CHENG Rui中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室(LASG), 北京 100029;地理信息工程国家重点实验室, 西安 710054
宇如聪YU Rucong中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室(LASG), 北京 100029
徐幼平XU Youping中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室(LASG), 北京 100029
王斌WANG Bin中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室(LASG), 北京 100029
宋帅SONG Shuai中国人民解放军32033部队, 海口 571100
顾春利GU Chunli地理信息工程国家重点实验室, 西安 710054
引用:程锐,宇如聪,徐幼平,王斌,宋帅,顾春利.2019.非静力AREM模式设计及其数值模拟II:数值模拟试验[J].大气科学,43(1):1-12,doi:10.3878/j.issn.1006-9895.1712.17201.
Citation:CHENG Rui,YU Rucong,XU Youping,WANG Bin,SONG Shuai,GU Chunli.2019.Design of Non-hydrostatic AREM Model and Its Numerical Simulation Part II: Numerical Simulation Experiments[J].Chinese Journal of Atmospheric Sciences (in Chinese),43(1):1-12,doi:10.3878/j.issn.1006-9895.1712.17201.
中文摘要:
      在程锐等(2018)中,我们完成了非静力AREM(Advanced Regional Eta-coordinate Model)模式动力框架设计。本文将通过理想和实例试验检验其模拟能力。设计理想试验并通过与国际成熟的中尺度非静力框架比较,直接检验非静力AREM三维动力框架在细致分辨率(约1 km)下的模拟性能。可以看出,非静力AREM与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。台风实例模拟表明,粗分辨率下静力、非静力AREM模式性能接近;但在高分辨率下,非静力明显优于静力模式。我们还开展了批量降水试验检验,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) has been presented in Cheng et al. (2018). The non-hydrostatic AREM is tested through the idealized and real-data numerical experiments in the present part. Firstly, the authors carry out high resolution idealized simulation (about 1 km) and compare the non-hydrostatic core of AREM with advanced non-hydrostatic frames, which are 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) yield similar structural and evolutional features of 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 the capability of real-data simulation. The typhoon Rananim (2004) is then simulated using this nonhydrostatic model and results are verified against various observations. The results reveal that the non-hydrostatic AREM can reproduce the hydrostatic simulation at lower resolution (for example, 37 km) and it can outperform the hydrostatic version of AREM at finer resolution (for instance, 8 km). Finally, the non-hydrostatic version of AREM is evaluated through quantitative testing on the precipitation hindcasting in July of 2010.
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