The Three-Dimensional Morphology of Simulated and Observed Convective Storms over Southern England
The Three-Dimensional Morphology of Simulated and Observed Convective Storms over Southern England
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DOI：
10.1175/mwr-d-13-00372.1
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发表时间：
2014-08
影响因子：
3.2
通讯作者：
T. Stein;R. Hogan;K. Hanley;J. Nicol;H. Lean;R. Plant;P. Clark;Carol Halliwell
中科院分区：
文献类型：
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作者：
T. Stein;R. Hogan;K. Hanley;J. Nicol;H. Lean;R. Plant;P. Clark;Carol Halliwell
摘要在对流风暴动力学和微物理演变（DYMECS）项目中，收集了一组对流风暴的高分辨率雷达观测数据，以评估气象局统一模式中的对流风暴。3GHz Chilbolton高级气象雷达采用扫描调度算法，自动跟踪从业务降雨雷达网中真实的识别的对流风暴。在2011年和2012年收集了超过15天的1000多个风暴观测数据，用于在各种支持对流的天气条件下评估模型。在详细的三维形态，风暴在1500米网格长度的模拟显示，产生水平结构的一个因素的1.5-2相比，雷达观测。一组嵌套模式在100 m网格长度下的试验表明，模式在风暴宽度方面是收敛的，但在最小网格长度下模拟的风暴结构过于狭窄和过于强烈。
AbstractA set of high-resolution radar observations of convective storms has been collected to evaluate such storms in the Met Office Unified Model during the Dynamical and Microphysical Evolution of Convective Storms (DYMECS) project. The 3-GHz Chilbolton Advanced Meteorological Radar was set up with a scan-scheduling algorithm to automatically track convective storms identified in real time from the operational rainfall radar network. More than 1000 storm observations gathered over 15 days in 2011 and 2012 are used to evaluate the model under various synoptic conditions supporting convection. In terms of the detailed three-dimensional morphology, storms in the 1500-m grid length simulations are shown to produce horizontal structures a factor of 1.5–2 wider compared to radar observations. A set of nested model runs at grid lengths down to 100 m show that the models converge in terms of storm width, but the storm structures in the simulations with the smallest grid lengths are too narrow and too intense c...