洪延超. 1996. 积层混合云数值模拟研究(Ⅰ)──模式及其微物理过程参数化[J]. 气象学报, 54(5):544-557, doi:10.11676/qxxb1996.057
积层混合云数值模拟研究(Ⅰ)──模式及其微物理过程参数化
THE NUMERICAL SIMULATION STUDY OF CONVECTIVESTRATIFORM MIXED CLOUD, PART(Ⅰ)─THE MODEL AND PARAMETERIZATION OFMICROPHYSICAL PROCESSES
投稿时间:1995-04-05  修订日期:1995-11-16
DOI:10.11676/qxxb1996.057
中文关键词:  积层混合云  数值模式  双变参数谱  雷达回波
英文关键词:Convetive-stratiform mixed cloud  Numerical model  Particle spectrum with two variable parameters  Radar echo intensity
基金项目:国家“八五”攻关课题85-906-08
作者单位
洪延超 中国科学院大气物理研究所, 北京, 100029 
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中文摘要:
      用积云对流速度场叠加辐合场的方法建立了一个二维平面对称积层混合云数值模式,以用于模拟研究层状云和嵌入其内的对流云组成的混合云。模式动力场计算以一种新的方法求解(V,θ,π)为基本变量的深对流滞弹守恒型方程组。云中微物理过程考虑了6种水质并使用双变参数谱描述和采用更为合理的粒子谱。为了便于与实测雷达回波强度和结构比较,模式可以计算雷达观测模式云的回波强度。
英文摘要:
      A 2-D slab-symmetric model of convective-stratiform mixed cloud is developed by superimposing convective cloud-size field on the convergence field, in order to simulate and study the mixed cloud consisting of stratiform cloud and convective clouds. A deep convective. anelastic and conservative system of equations with basic variables (V, B, π) is solved by a new method to calculate dynamic field. The water substance in the cloud is dividded into 6 categorys and the microphysical processes are described in spectram with two variable parameters and more reasonable particle number/size distributions. To comparing with measured redar echo intensity and structure. the model may calculate echo intensity of the model cloud observed by radar.
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