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首页> 外文期刊>Pure and Applied Geophysics >Metropolitan-scale Transport and Dispersion from the New York World Trade Center Following September 11, 2001. Part I: An Evaluation of the CALMET Meteorological Model
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Metropolitan-scale Transport and Dispersion from the New York World Trade Center Following September 11, 2001. Part I: An Evaluation of the CALMET Meteorological Model

机译：2001年9月11日之后从纽约世界贸易中心出发的大城市规模的运输和分散。第一部分：CALMET气象模型的评估

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摘要

Following the collapse of the New York City World Trade Center towers on September 11, 2001, Local, State and Federal agencies initiated numerous air monitoring activities to better understand the impact of emissions from the disaster. A study of the estimated pathway that a potential plume of emissions would likely track was completed to support the U.S. EPA’s initial exposure assessments. The plume from the World Trade Center was estimated using the CALMET-CALPUFF dispersion modeling system. The following is the first of two reports that compares several meteorological models, including the CALMET diagnostic model, the Advanced Regional Prediction System (ARPS) and 5th Generation Mesoscale Model (MM5) in the complex marine-influenced urban setting of NYC. Results indicate wind speed, in most cases, is greater in CALMET than the two mesoscale models because the CALMET micrometeorological processor does not properly adjust the wind field for surface roughness variations that exits in a major built-up urban area. Small-scale circulations, which were resolved by the mesoscale models, were not well simulated by CALMET. Independent wind observations in Lower Manhattan suggest that the wind direction estimates of CALMET possess a high degree of error because of the urban influence. Wind speed is on average 1.5 ms−1 stronger in CALMET than what observations indicate. The wind direction downwind of the city is rotated 25–34 clockwise in CALMET, relative to what observations indicate.
机译：在2001年9月11日纽约世界贸易中心大楼倒塌之后，地方，州和联邦机构发起了许多空气监测活动，以更好地了解灾难排放的影响。为支持美国EPA的初始暴露评估，完成了对可能的排放物可能跟踪的估计途径的研究。使用CALMET-CALPUFF扩散建模系统估算了来自世界贸易中心的烟羽。以下是两份报告中的第一份，比较了纽约市受海洋影响的复杂城市环境中的几种气象模型，包括CALMET诊断模型，先进区域预报系统（ARPS）和第五代中尺度模型（MM5） 。结果表明，在大多数情况下，CALMET中的风速大于两个中尺度模型，这是因为CALMET微气象处理器无法针对主要市区中存在的表面粗糙度变化适当地调整风场。由中尺度模型解决的小规模环流没有被CALMET很好地模拟。在曼哈顿下城的独立风向观测表明，由于城市的影响，CALMET的风向估计值具有很高的误差。 CALMET的风速平均比观测结果强1.5 ms-1 。相对于观测结果，CALMET的顺风向是顺时针旋转25-34。

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  • 来源
    《Pure and Applied Geophysics》 |2005年第10期|1981-2003|共23页
  • 作者

    Robert C. Gilliam; Peter P. Childs; Alan H. Huber; Sethu Raman;

  • 作者单位

    State Climate Office of North Carolina North Carolina State UniversityAtmospheric Sciences Modeling Division Air Resources Laboratory National Oceanic and Atmospheric Administration. On assignment to the United States Environmental Protection Agency National Exposure Research Laboratory;

    State Climate Office of North Carolina North Carolina State University;

    Atmospheric Sciences Modeling Division Air Resources Laboratory National Oceanic and Atmospheric Administration. On assignment to the United States Environmental Protection Agency National Exposure Research Laboratory;

    State Climate Office of North Carolina North Carolina State University;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Dispersion modeling; CALPUFF; CALMET; Plume modeling; Sea breeze; ARPS; MM5;

    机译：分散建模;CALPUFF;CALMET;羽状建模;海风;ARPS;MM5;

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