Accession Number : ADA181744

Title :   The Use of Observed Data for the Initial Value Problem in Numerical Weather Prediction.

Descriptive Note : Technical rept. Aug 86-Apr 87,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Franke,Richard ; Barker,Edward ; Goerss,James

PDF Url : ADA181744

Report Date : Apr 1987

Pagination or Media Count : 43

Abstract : The problem of combining observed and predicted values of meteorological variables, all with error, to obtain current weather conditions is considered. Statistical interpolation is in common use for this problem. Properties of isotropic spatial covariance functions are developed. The performance of several families of covariance functions in fitting published data is investigated. The second order autoregressive covariance function is identified as having suitable theoretical and excellent approximation properties. Sensitivity of the errors in statistical interpolation to misspecification of the statistical parameters is explored, showing that the process is quite stable to such perturbations.

Descriptors :   *MATHEMATICAL PREDICTION, *WEATHER FORECASTING, COVARIANCE, ISOTROPISM, PERTURBATIONS, INTERPOLATION, STATISTICS, METEOROLOGICAL DATA, VARIABLES, ERRORS, SENSITIVITY, WEATHER, FUNCTIONS(MATHEMATICS)

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE