地形区两种典型气压梯度力计算方法的比较  

A COMPARISON OF TWO TYPICAL SCHEMES FOR PRESSURE GRADIENT FORCE CALCULATION IN TOPOGRAPHIC AREA

作　　者：周天军[1] 钱永甫[1] 

机构地区：[1]南京大学大气科学系,中国气象局总体规划研究设计室

出　　处：《应用气象学报》1996年第3期377-380,共4页Journal of Applied Meteorological Science

摘　　要：试验比较了两种较为典型的地形区气压梯度力计算方法：一是先在准水平的等压面上计算，再垂直插值到地形坐标面上的方法，二是差－微－差方法。初始化分析和预报结果检验都表明，在减轻地形影响上，前者的优势在大气上层。Two typical schemes for pressure gradient force (PGF) calculation in topographic area have been compared. One is that PGF of topographic coordinate is got by vertical interpolatence scheme. Based on the initial field diagnosis and forecast verification, the results show that the first scheme does better in upper air while the second scheme in lower air for reducing topographic influence.

关 键 词：地形 气压梯度力 计算方法 

分 类 号：P457.4[天文地球—大气科学及气象学]