Nonlinear Processes in Geophysics
Nonlinear Processes in Geophysics
NPG
Articles | Volume 24, issue 3
Articles | Volume 24, issue 3
https://doi.org/10.5194/npg-24-351-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/npg-24-351-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 24, issue 3
Research article
 | 
19 Jul 2017
Research article |  | 19 Jul 2017

Controllability, not chaos, key criterion for ocean state estimation

Geoffrey Gebbie and Tsung-Lin Hsieh

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Latest update: 24 Apr 2025
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Short summary
The best reconstructions of the past ocean state involve the statistical combination of numerical models and observations; however, the computationally efficient method that produces physically interpretable fields is thought to not be applicable to chaotic dynamical systems, such as ocean models with eddies. Here we use a model of the chaotic, forced pendulum to show that the most popular existing method is successful so long as there are enough uncertain boundary conditions through time.
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