Evaluation of the WRF Double-Moment 6-Class Microphysics Scheme for Precipitating Convection
Evaluation of the WRF Double-Moment 6-Class Microphysics Scheme for Precipitating Convection
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DOI：
10.1155/2010/707253
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发表时间：
2010-06
影响因子：
2.9
通讯作者：
Song‐You Hong;K. Lim;Yong Hee Lee;J. Ha;Hyung-Woo Kim;Sook-Jeong Ham;J. Dudhia
中科院分区：
文献类型：
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作者：
Song‐You Hong;K. Lim;Yong Hee Lee;J. Ha;Hyung-Woo Kim;Sook-Jeong Ham;J. Dudhia
本研究展示了天气研究和预报 (WRF) 双矩 6 级 (WDM6) 微物理方案在 3D 平台中表示降水湿对流的特性，相对于 WRF 界广泛使用的 WSM6 方案而言。以大平原对流系统为例，WDM6方案改进了飑线前缘弓型回波等演化特征。我们还发现，WRF 与 WDM6 方案消除了虚假海洋降雨，这是单独使用 WSM6 方案造成的系统缺陷。模拟的东亚夏季风降雨是通过减弱（增强）小（强）降水活动来改善的。这些变化可以通过以下事实来解释：WDM6 方案比 WSM6 方案具有更宽的云雨数浓度范围。
This study demonstrates the characteristics of the Weather Research and Forecasting (WRF) Double-Moment 6-Class (WDM6) Microphysics scheme for representing precipitating moist convection in 3D platforms, relative to the WSM6 scheme that has been widely used in the WRF community. For a case study of convective system over the Great Plains, the WDM6 scheme improves the evolutionary features such as the bow-type echo in the leading edge of the squall line. We also found that the WRF with WDM6 scheme removes spurious oceanic rainfall that is a systematic defect resulting from the use of the WSM6 scheme alone. The simulated summer monsoon rainfall in East Asia is improved by weakening (strengthening) light (heavy) precipitation activity. These changes can be explained by the fact that the WDM6 scheme has a wider range in cloud and rain number concentrations than does the WSM6 scheme.