Using outputs of ground temperature , vapor pressure , wind speed and low cloudage . middle cloudage as well as high cloudage from mm5v36 , and ground direct radiation and out - going scattered radiation from modtran3 利用数值预报模式mm5v36输出地面气温、水汽压、风速和低云量、中云量及高云量等气象要素。利用大气辐射传输模式modtran3 . 0输出地面太阳直接辐射和射向天空的散射辐射以及总辐射。
2.
( 5 ) parameterization of infrared satellite cloud imagery and its application in rainfall predication obvious correlation exist between the probability of rain and parameterization estimate such as average brightness temperature ( tb ) , brightness temperature variance ( f ) , equivalent cloudage ( cn ) , brightness temperature area index ( al - the first a5 - the fifth grade , a6 - the sixth grade ) ( 5 )卫星云图参数化及在降雨预测中的应用红外卫星云图参数化估计值，与局地降雨过程的发生、发展具有较为密切的关系。相关较密切的参数有平均亮温、亮温方差、等效云量、亮温面积指数( 1级、 5级、 6级) 。
3.
A transfer model is established , which can be used to study the interaction between the land surface physical processes of inhomogeneous region and the structure of atmosphere boundary - layer over urban and rural terrains . the model has simulated surface heat flux , surface temperature , temperature profiles , height of mixture layer and so on . and the differences between urban area , suburban area and rural area have been compared . this model mainly depends on the parameters below : surface albedo , surface roughness coefficient , moisture available coefficient of soil , thermal capacity and thermal diffusion coefficient of errain , cloudage . the result shows that this model can simulate the structure and eigenvalues of atmosphere boundary layer and their changes in a day . parameters used in this model aim at beijing city , and the time is at the beginning of september . to other cities , or other time , the parameters should be adjusted accordingly . in addition , being adjusted , the model can also be used for other homogeneous and inhomogeneous terrains 模式主要依赖于以下参数和物理量：地面反照率下垫面粗糙度土壤的可含水量下垫面的热容量和热扩散系数云量等参数。结果表明，本模式能合理地模拟不同地表热量平衡地表气温混合层高度湍流交换系数湍流动能位温廓线等，以及它们的日变化。该模式所取参数主要针对北京市，时间为九月初，对于其他城市，参数应作相应的调整。
