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首页> 外文会议>25th Conference on Agricultural and Forest Meteorology and 12th Joint Conference on the Applications of Air Pollution Meteorology with Aamp;WMA and Fourth Symposium on the Urban Environment May 20-24, 2002 Norfolk, Virginia >SENSITIVITY OF MESOSCALE REAL-DATA SIMULATIONS TO AN URBAN CANOPY PARAMETERIZATION
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SENSITIVITY OF MESOSCALE REAL-DATA SIMULATIONS TO AN URBAN CANOPY PARAMETERIZATION

机译：大规模实数据模拟对城市冠层参数化的敏感性

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摘要

Mesoscaie numerical model simulations were performed for the field experiment URBAN 2000 to examine the sensitivity of thermodynamic and dynamic structure to the specification of the urban canopy. The model used was the Coupled Ocean/Atmosphere Mesoscaie Prediction System (COAMPS~(TM)) developed by the Naval Research Laboratory (NRL). URBAN 2000, conducted in Salt Lake City, Utah in October 2000, was sponsored by the Chemical and Biological National Security Program (CBNP) within the National Nuclear Security Agency (NNSA) of the Department of Energy (DOE). The purpose of this meteorological and tracer experiment was to study the urban environment and ultimately its effect on atmospheric dispersion. COAMPS is a complete 3-D mesoscale prediction system consisting of atmospheric and ocean data assimilation (including data quality control), analysis, initialization, and a nonhydrostatic atmospheric forecast model coupled to a hydrostatic ocean model (Hodur 1997). The atmospheric system has been used for operational mesoscale forecasting since 1996, providing products to the meteorological community from both a supercomputer central site (Fleet Numerical Meteorology and Oceanography Center) as well as regional sites using workstations (Naval centers, Universities, Government Agencies, etc.). Because the urban infrastructure can have a tremendous impact on surface and atmospheric dynamic and thermodynamic structure, an urban canopy parameterization developed by Chin et al. (2000) that extends the work of Brown and Williams (1998) and Yamada (1982) has been implemented into COAMPS. This parameterization accounts for effects due to drag, turbulent production, radiation balance, and anthropogenic and roof-top heating, and makes use of an additional equation for the roof-top surface energy balance. Simulations using COAMPS with and without this parameterization were performed and compared to observations from URBAN 2000.
机译：对现场实验URBAN 2000进行了中观数值模拟，以检验热力学和动力结构对城市雨棚规格的敏感性。所使用的模型是由海军研究实验室（NRL）开发的海洋/大气中陆耦合预报系统（COAMPSTM）。 URBAN 2000由能源部（DOE）国家核安全局（NNSA）内的化学和生物国家安全计划（CBNP）赞助，于2000年10月在犹他州盐湖城举行。这项气象和示踪实验的目的是研究城市环境，并最终研究其对大气扩散的影响。 COAMPS是一个完整的3-D中尺度预报系统，包括大气和海洋数据同化（包括数据质量控制），分析，初始化以及与静水海洋模型耦合的非静水大气预报模型（Hodur 1997）。自1996年以来，大气系统已用于中尺度业务预报，它从超级计算机中央站点（Fleet数值气象和海洋学中心）以及使用工作站的区域站点（海军中心，大学，政府机构等）向气象界提供产品。 ）。由于城市基础设施可能对地表，大气动态和热力学结构产生巨大影响，Chin等人开发了城市冠层参数化。 （2000）扩展了Brown和Williams（1998）和Yamada（1982）的工作，现已应用于COAMPS。此参数化说明了由于阻力，湍流产生，辐射平衡以及人为和屋顶加热所造成的影响，并使用了屋顶表面能量平衡的附加公式。进行了使用COAMPS进行和不进行此参数化的模拟，并将其与URBAN 2000的观察结果进行了比较。

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