摘要
本文对最优插值客观分析方法中相关函数的参数选取、测站分布与插值系数的关系、求解插值系数的方法以及初估场对插值的影响均作了试验研究,建立了12层、4个要素的可变区域、可变网格的单要素内插和多要素内插方案。该方案中分析要素和分析要素层次都是可变的。在多要素最优插值方案中,高度和风分量(u、v)采用多元最优插值方法,而相对湿度则应用单要素最优插值方法。
An experimental study is made on the selection of parametersof the correlation function, the relationship between the observationalstation distribution and the interpolation coefficients, the method ofdetermining interpolation coefficients, and the influence of the firstguess field on the interpolation in the objective analysis method of theoptimum interpolation. A scheme is thus established for the mono-elementand multi-element interpolation in the 12-layer variable area and gridof four elements. The analysis of the elements and that of the elementlayers in the scheme are both variable. In the multi-element scheme,the multivariate optimum interpolation is used for the height and windcomponent (u, v), whereas the mono-element interpolation is used forthe relative humidity.
出处
《南京气象学院学报》
CSCD
1991年第4期566-574,共9页
Journal of Nanjing Institute of Meteorology
基金
"七五"攻关项目75-09-01资助
关键词
气象要素
最优插值
objective analysis
meteorological element field
