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- W2035379791 abstract "Variational data assimilation system combines the useful observation information and model dynamic constraint and improves the optimal analysis using adjoint method in order to provide correct and high quality initial conditions for the meteorological numerical weather prediction model. The observation error is assumed Gaussian in traditional variational assimilation method. While the gross error is inevitable in the actual observation data, which is not strictly agreed the hypothesis of Gaussian observation error. The observational term of cost function need to be modified by the variational quality control to deal with the non-Gaussian observation error, and the variational quality control is incorporated within the variational analysis itself. The variational quality control technique was implemented in the pre-operational global four dimension data assimilation system in this paper. Assimilation and forecast experiments were carried out with the conventional observation data. It was demonstrated that the variational quality control guaranteed the fully consistence of background and model dynamic to ameliorate the analysis results and improve the forecasting skill." @default.
- W2035379791 created "2016-06-24" @default.
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- W2035379791 date "2010-06-01" @default.
- W2035379791 modified "2023-09-27" @default.
- W2035379791 title "Implementation and Tests of Variational Quality Control in Meteorological Data Assimilation System" @default.
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- W2035379791 doi "https://doi.org/10.1109/icic.2010.149" @default.
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