| Issue |
MATEC Web Conf.
Volume 210, 2018
22nd International Conference on Circuits, Systems, Communications and Computers (CSCC 2018)
|
|
|---|---|---|
| Article Number | 04025 | |
| Number of page(s) | 5 | |
| Section | Computers | |
| DOI | https://doi.org/10.1051/matecconf/201821004025 | |
| Published online | 05 October 2018 | |
The General Data Assimilation Method, its Comparison with the Standard Scheme, and its Application to Dynamical Simulation in the Atlantic
1
Shirshov Institute of Oceanology of Russian Academy of Sciences, Moscow, Russia
2
Keldysh Institute of Applied Mathematics of Russian Academy of Sciences, Moscow, Russia
3
Lomonosov Moscow State University, Faculty of Computational Mathematics and Cybernetics, Moscow, Russia
4
Federal University of Bahia, Salvador, Brazil
* Corresponding author: andrew_kuleshov@mail.ru
A new data assimilation scheme developed earlier and based on the theory of diffusion stochastic processes and parabolic differential equations is presented and tested. This scheme is applied to the Hybrid Circulation Ocean Model (HYCOM) and altimetry data base Archiving, Validating and Interpolating Satellite Oceanography Data (AVISO) over the Atlantic. Several numerical experiments are conducted and their results are analyzed. It is shown that the method really assimilates data, makes the output oceanic fields closer to observations and, on the other hand, conserves the model integrals and balance. The tested method is also compared with the Ensemble Optimal Interpolation scheme (EnOI) as a counterpart of the standard Kalman filter method and it is shown that the proposed general method has several advantages, in particular, it provides a better forecast and requires less computational consumptions.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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