Title: Testing the accuracy of a data assimilation algorithm

Authors: Z. Zlatev, J. Brandt

Addresses: National Environmental Research Institute, Aarhus University, Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark. ' National Environmental Research Institute, Aarhus University, Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark

Abstract: Variational data assimilation techniques have been successfully used in connection with comprehensive research projects in different fields of science and engineering. The use of the variational data assimilation approach is becoming more and more popular also in the attempts to improve the accuracy of the results obtained by running large-scale air pollution models. Different tests were carried out in order both to check the ability of the data assimilation procedures to improve the initial concentrations and to start building up a benchmark for testing the performance of these procedures on different modern high-speed computers. Selected results from these tests will be presented and discussed in this paper.

Keywords: air pollution models; variational data assimilation; numerical algorithms; ordinary differential equations; ODEs; partial differential equations; PDEs; splitting techniques; data accuracy.

DOI: 10.1504/IJCSE.2007.018270

International Journal of Computational Science and Engineering, 2007 Vol.3 No.4, pp.305 - 313

Published online: 14 May 2008 *

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