The Dispersion of Tracer Plumes in Mountainous Regions in Central Arizona: Comparisons between Observations and Modeling Results
The Dispersion of Tracer Plumes in Mountainous Regions in Central Arizona: Comparisons between Observations and Modeling Results
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亚利桑那州中部山区示踪羽流的扩散：观测结果与模拟结果的比较
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
W. Hall
中科院分区：
文献类型：
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作者：
R. Bruintjes;T. Clark;W. Hall
摘要利用三维时变嵌套网格模型计算了在亚利桑那州北方复杂地形上示踪剂或播撒物质的靶向。在三个案例研究中报告了与SF6示踪剂测量的良好一致性。在逆风山谷释放，示踪剂的运动和分散的强烈影响，山谷流和重力波激发的山脉，以及天气流的变化，这可能会发生很大的变化，甚至在一个单一的风暴。气流和地形之间的相互作用似乎是决定示踪物质扩散和输运的主导因素。
Abstract A three-dimensional, time-dependent, nested-grid model is used to calculate the targeting of tracer or Seeding material over complex terrain in northern Arizona. Good agreement with measurements of SF6 tracer is reported in three case studies. Released in upwind valleys, the tracer movement and dispersion are strongly influenced by both valley flow and gravity waves excited by the mountains, as well as by changes in the synoptic flow, which can change substantially even during a single storm. The interaction between the airflow and the topography seem to be the dominant factor determining the dispersion and transport of tracer material.