Quasi—Operational Limited Area Objective Analysis Scheme in the National Meteorological Center

The scheme of quasi-operational limited area analysis-forecast system in the National Meteorological Center is described. Three dimensional optimum interporation method is used in this scheme. The full horizontal analysis grid has dimensions of 42 by 28, with a resolution of 1.875o×1.875o longitude-latitude grid. The multivariate analysis of geopotential and wind fields for 12 standard pressure levels from 1000 hPa to 50 hPa, and the univariate analysis of relative humitity for the lowest 6 standard pressure levels are made. The verification results show that satiafactory analysis values are provided for predication model using this scheme