Perturbation growth at the convective scale for CSIP IOP18
Perturbation growth at the convective scale for CSIP IOP18
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DOI：
10.1002/qj.587
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发表时间：
2010-04
影响因子：
8.9
通讯作者：
Giovanni Leoncini;R. Plant;S. Gray;P. Clark
中科院分区：
文献类型：
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作者：
Giovanni Leoncini;R. Plant;S. Gray;P. Clark
气象局统一模式是在对流风暴启动计划（CSIP）的第18个强化观测期（IOP 18）期间观测到的一个案例。其目的是识别响应于模型状态扰动而导致对流尺度扰动增长的物理过程，并确定它们对扰动特征的敏感性。该案例是强烈的高层强迫，但详细的中尺度/对流尺度演变取决于较小的尺度过程。位温在边界层内受到扰动。扰动的幅度和典型尺度长度的扰动增长的影响进行了研究，扰动施加顺序（每30分钟在整个模拟）或在特定的时间。
The Met Office Unified Model is run for a case observed during Intensive Observation Period 18 (IOP18) of the Convective Storms Initiation Project (CSIP). The aims are to identify the physical processes that lead to perturbation growth at the convective scale in response to model‐state perturbations and to determine their sensitivity to the character of the perturbations. The case is strongly upper‐level forced but with detailed mesoscale/convective‐scale evolution that is dependent on smaller‐scale processes. Potential temperature is perturbed within the boundary layer. The effects on perturbation growth of both the amplitude and typical scale length of the perturbations are investigated, and perturbations are applied either sequentially (every 30 minutes throughout the simulation) or at specific times.