Characteristics of Correlation Statistics between Droplet Radius and Optical Thickness of Warm Clouds Simulated by a Three-Dimensional Regional-Scale Spectral Bin Microphysics Cloud Model
Characteristics of Correlation Statistics between Droplet Radius and Optical Thickness of Warm Clouds Simulated by a Three-Dimensional Regional-Scale Spectral Bin Microphysics Cloud Model
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DOI：
10.1175/jas-d-11-076.1
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发表时间：
2012-02
影响因子：
3.1
通讯作者：
Yousuke Sato;Kentaroh Suzuki;T. Iguchi;In‐Jin Choi;Hiroyuki Kadowaki;T. Nakajima
中科院分区：
文献类型：
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作者：
Yousuke Sato;Kentaroh Suzuki;T. Iguchi;In‐Jin Choi;Hiroyuki Kadowaki;T. Nakajima
摘要利用光谱仓微物理（SBM）模型进行了三维降尺度模拟，研究了气溶胶量和大气动力稳定性对加利福尼亚海岸暖云的云滴有效半径（RE）和云光学厚度（COT）相关统计的影响。气溶胶的再生过程被引入到SBM中，并被认为是模拟卫星观测到的暖云微物理特性所必需的。结果表明：气溶胶量通过改变云粒子数浓度的方式改变相关统计量，而与大气稳定性和云顶高度相关的边界层逆温高度通过改变液态水路径的方式改变相关统计量。这些结果表明，控制相关统计量的主要机制与控制相关统计量的机制相似。
AbstractThree-dimensional downscaling simulations using a spectral bin microphysics (SBM) model were conducted to investigate the effects of aerosol amount and dynamical stabilities of the atmosphere on the correlation statistics between cloud droplet effective radius (RE) and cloud optical thickness (COT) of warm clouds off the coast of California. The regeneration process of aerosols was implemented into the SBM and was found to be necessary for simulating the satellite-observed microphysical properties of warm clouds by the SBM model used in this study.The results showed that the aerosol amount changed the correlation statistics in a way that changes the cloud particle number concentration, whereas the inversion height of the boundary layer, which is related to the atmospheric stability and the cloud-top height, changed the correlation statistics in a way that changes the liquid water path. These results showed that the dominant mechanisms that control the correlation statistics are similar to those su...