The Estimation of Open Boundary Conditions in the Bohai Sea with POD 4D VAR Data Assimilation

DOI

10.2991/amsm-16.2016.3How to use a DOI?

Keywords

proper orthogonal decomposition; four-dimensional Variationl; data assimilation; open boundary conditions; TOPEX/Poseidon altimeter data

Abstract

Proper orthogonal decomposition four-dimensional Variational (POD 4D VAR) data assimilation method is used to estimate the open boundary conditions (OBCs) with a two-dimensional (2D) M2 tide in the Bohai Sea by assimilating the TOPEX/Poseidon (T/P) altimeter data. Qian et al. [14] assume that the OBCs are temporally and spatially varying and optimize the OBCs in the Bohai, Yellow and East China Seas and in this paper we only optimize the Fourier coefficients of the OBCs. In the practical experiment, the absolute mean difference between the model results and observations are 2.8 cm and for amplitude and phase-lag, respectively, and the cochart obtained can describe the character of tide in the Bohai Sea, suggesting that the inversion of the OBCs is successful.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Shouguo Qian
AU  - Xianqing Lv
AU  - Rencheng Sun
AU  - Fengjing Shao
PY  - 2016/05
DA  - 2016/05
TI  - The Estimation of Open Boundary Conditions in the Bohai Sea with POD 4D VAR Data Assimilation
BT  - Proceedings of the 2016 International Conference on Applied Mathematics, Simulation and Modelling
PB  - Atlantis Press
SP  - 9
EP  - 11
SN  - 2352-538X
UR  - https://doi.org/10.2991/amsm-16.2016.3
DO  - 10.2991/amsm-16.2016.3
ID  - Qian2016/05
ER  -