Arctic Mixed-Phase Clouds Simulated by a Cloud-Resolving Model : Comparison with ARM Observations and Sensitivity to Microphysics Parameterizations
Arctic Mixed-Phase Clouds Simulated by a Cloud-Resolving Model : Comparison with ARM Observations and Sensitivity to Microphysics Parameterizations
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云解析模型模拟的北极混合相云：与 ARM 观测结果的比较以及对微物理参数化的敏感性
DOI：
10.1175/2007jas2467.1
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发表时间：
2008
影响因子：
3.1
通讯作者：
G. McFarquhar
中科院分区：
文献类型：
--
作者：
Yali Luo;Kuan Xu;H. Morrison;G. McFarquhar
利用云分辨模式(CRM)对大气辐射测量(ARM)计划的北极混合相云实验(MPACE)中的一个子时段在地面热通量较大和普遍下沉的条件下形成的单层混合相层状(MPS)北极云进行了数值模拟。客户关系管理的实施要么是提前两分钟，要么是莫里森等人。(MCK)]或常用的一瞬间[Lin et al.(LFO)]体微物理方案和最先进的辐射传输方案。MCK模拟采用双矩格式，观测了气溶胶的大小分布和冰云(IN)数密度，再现了MPACE观测所给出的云液态水含量(LWC)、总冰水含量(IWC)、云滴数密度和有效半径的大小和垂直结构。模拟结果将冰晶数浓度低估了一个数量级，而高估了冰晶的有效半径。
Abstract Single-layer mixed-phase stratiform (MPS) Arctic clouds, which formed under conditions of large surface heat flux combined with general subsidence during a subperiod of the Atmospheric Radiation Measurement (ARM) Program’s Mixed-Phase Arctic Cloud Experiment (MPACE), are simulated with a cloud-resolving model (CRM). The CRM is implemented with either an advanced two-moment [Morrison et al. (MCK)] or a commonly used one-moment [Lin et al. (LFO)] bulk microphysics scheme and a state-of-the-art radiative transfer scheme. The MCK simulation, which uses the two-moment scheme and observed aerosol size distribution and ice nulei (IN) number concentration, reproduces the magnitudes and vertical structures of cloud liquid water content (LWC), total ice water content (IWC), and number concentration and effective radius of cloud droplets as suggested by the MPACE observations. The simulation underestimates ice crystal number concentrations by an order of magnitude and overestimates effective radius of ice c...