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大气科学  2002 

一种区域格点三维变分分析方案--基本框架和初步试验

DOI: 10.3878/j.issn.1006-9895.2002.05.09

Keywords: 三维变分分析,背景场误差协方差矩阵,变量变换,递归滤波

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Abstract:

给出一种区域格点三维变分分析方案的基本框架.对方案中阶数巨大的背景场误差协方差矩阵加以处理,选用位势高度和风场非平衡部分的纬向风速、经向风速作为分析变量,减少矩阵阶数;进行变量变换,避免矩阵求逆;然后,采用与最优插值方案相似的水平和垂直方向可分离的理想相关模型,在水平方向上用递归滤波器代替矩阵运算,从而实现变分分析方案的求解.用单个和理想分布观测资料对方案测试,并进行实例试验,得到很好的计算结果.

References

[1]  Gandin, L. S., Objective Analysis of Meteorological Fields, Gidrometeorologicheskoe Izdatel\'stro, Leningrad, 1963, Translated (1965) from Russian, Israel Program for Scientific Translations, Jerusalem, 212pp.
[2]  Cressman, G. P., An operational objective analysis system, Mon. Wea. Rev., 1959, 87, 367~ 374.
[3]  Parrish, F. D. and C. J. Derber, The national meteorological center\'s spectral-interpolation analysis system, Mon. Wea. Rev., 1992, 120, 1747~ 1763.
[4]  Courtier, P. et al., The ECMWF implementation of three-dimensional variational assimilation (3D-Var). Ⅰ: Formulation, Quart. J. Roy. Meteor. Soc., 1998, 124, 1783~ 1807.
[5]  Lorenc, A. C., Analysis methods for numerical weather prediction, Quart. J. Roy. Meteor. Soc., 1986, 112, 1177 ~ 1194.
[6]  Rergman, K. H., Multivariate analysis of temperatures and winds using optimum interpolation, Mon. Wea. Rev., 1979, 107, 1423~ 1444.
[7]  Lorenc, A. C., Iterative analysis using covariance function and filters, Quart. J. Roy. Meteor. Soc., 1992, 118, 569~591.
[8]  Lonnberg, P. And A. Hollingsworth, Meteorological data analysis, ECMWF Lecture Note, No. 2.2, 1984, 1~ 84.

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