An improved representation of the raindrop size distribution for single‐moment microphysics schemes
An improved representation of the raindrop size distribution for single‐moment microphysics schemes
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DOI：
10.1002/qj.1949
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发表时间：
2012-10
影响因子：
8.9
通讯作者：
S. Abel;I. Boutle
中科院分区：
文献类型：
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作者：
S. Abel;I. Boutle
我们分析了各种云类型和降水率的雨滴大小分布的观测结果。测量结果显示，从对流阵雨和锋面雨带中观察到的大雨滴到层积云中观察到的更高浓度的小得多的毛毛雨滴的过渡。这些观测结果被用来改进雨滴尺寸分布的参数化，以更好地捕捉观测到的过渡，用于单矩微物理方案。在气象局统一模型的气候和数值天气预报版本中进行了敏感性测试，以证明新的参数化导致各种降水和云相关指标的改进。版权所有© 2012英国皇家版权，英国气象局。出版社：John Wiley & Sons Ltd
We analyse observations of the size distribution of raindrops from a variety of cloud types and precipitation rates. The measurements show a transition from large raindrops observed in convective showers and frontal rainbands to higher concentrations of much smaller drizzle drops observed in stratocumulus clouds. The observations are used to develop an improved parametrization of the raindrop size distribution that better captures the observed transition for use in single‐moment microphysics schemes. Sensitivity tests are performed in both climate and numerical weather prediction versions of the Met Office Unified Model to demonstrate that the new parametrization leads to improvements in various precipitation and cloud‐related metrics. Copyright © 2012 British Crown copyright, the Met Office. Published by John Wiley & Sons Ltd.