一个描述小尺度深凹地形大气边界层的数值模式及数值模拟试验  

A NUMERICAL MODEL ON THE ATMOSPHERIC BOUNDARY LAYER OVER MICROSCALE CONCAVE TERRAIN AND SOME EXPERIMENTS

作　　者：石勇[1] 蒋维楣[2] 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100080 [2]南京大学大气科学系,南京210093

出　　处：《气象学报》2000年第3期328-339,共12页Acta Meteorologica Sinica

摘　　要：文中针对小尺度深凹地形（深凹露天矿）的特点，建立了一个高分辨率的、三维非静力的大气边界层数值模式，模式中采用能量（E-ε）闭合方案。利用该模式对小尺度深凹地形边界层的三维结构进行了较充分的研究，并且有选择地对影响边界层结构的因子进行了数值试验。In this paper, a high-resolution, nonhydrostatic, three-dimensional PBL model for microscale concave terrain (concave open pit mine) was established according to the fea-tures of this kind of terrain. The energy (E-∈) closure scheme was adopted, which was much beter than the classical K scheme. Using this model, characteristics of PBL struc-ture of the microscale concave terrain was fully studied and some selective numerical ex-periments were made to study the condition factors on the stucture of the PBL.

关 键 词：小尺度 深凹地形 数值模式 大气边界层 

分 类 号：P404[天文地球—大气科学及气象学] P421.31