Articles | Volume 15, issue 6
https://doi.org/10.5194/os-15-1801-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-15-1801-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 Dec 2019
Research article |
| 20 Dec 2019
| 20 Dec 2019
Evaluation of nonidentical versus identical twin approaches for observation impact assessments: an ensemble-Kalman-filter-based ocean assimilation application for the Gulf of Mexico
Department of Oceanography, Dalhousie University, Halifax, Nova
Scotia, Canada
Department of Mathematics, The Hong Kong University of Science and
Technology, Hong Kong, China
Katja Fennel
Department of Oceanography, Dalhousie University, Halifax, Nova
Scotia, Canada
Department of Oceanography, Dalhousie University, Halifax, Nova
Scotia, Canada
Arnaud Laurent
Department of Oceanography, Dalhousie University, Halifax, Nova
Scotia, Canada
Keith R. Thompson
Department of Oceanography, Dalhousie University, Halifax, Nova
Scotia, Canada
Lynn K. Shay
Rosenstiel School of Marine and Atmospheric Science, University of
Miami, Miami, Florida, USA
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Cited
16 citations as recorded by crossref.
- Assessing the value of biogeochemical Argo profiles versus ocean color observations for biogeochemical model optimization in the Gulf of Mexico B. Wang et al. https://doi.org/10.5194/bg-17-4059-2020
- Can assimilation of satellite observations improve subsurface biological properties in a numerical model? A case study for the Gulf of Mexico B. Wang et al. https://doi.org/10.5194/os-17-1141-2021
- The Verification Challenge of Marine Carbon Dioxide Removal K. Fennel https://doi.org/10.1146/annurev-marine-032123-025717
- Impact of assimilating satellite surface velocity observations in the Mercator Ocean International analysis and forecasting global 1/4° system I. Mirouze et al. https://doi.org/10.3389/fmars.2024.1376999
- Design of an Observing System Simulation Experiment for the Operational Model of the Southwestern Coast of Iberia (SOMA) F. Mendonça et al. https://doi.org/10.3390/jmse13091830
- An Assessment of Vertical Carbon Flux Parameterizations Using Backscatter Data From BGC Argo B. Wang & K. Fennel https://doi.org/10.1029/2022GL101220
- Ocean biogeochemical modelling K. Fennel et al. https://doi.org/10.1038/s43586-022-00154-2
- Assessment of an ensemble-based data assimilation system for a shallow estuary M. Khanarmuei et al. https://doi.org/10.1016/j.ecss.2021.107389
- Data assimilation in emergency department simulations for real-time disaster response R. Delos Reyes et al. https://doi.org/10.1016/j.ijdrr.2026.105995
- Assimilating synthetic Biogeochemical-Argo and ocean colour observations into a global ocean model to inform observing system design D. Ford https://doi.org/10.5194/bg-18-509-2021
- Assimilation of GPS-tracked drifter data to improve the Eulerian velocity fields in an estuary M. Khanarmuei et al. https://doi.org/10.1016/j.ecss.2021.107575
- Robustness of Observing System Simulation Experiments N. Privé et al. https://doi.org/10.16993/tellusa.3254
- An Assessment of Ensemble Kalman Filter and Azouani-Olson-Titi Algorithms for Data Assimilation: A Comparative Study N. Ning & C. Victor https://doi.org/10.4208/cicp.oa-2024-0167
- Coupling an agent-based model and an ensemble Kalman filter for real-time crowd modelling K. Suchak et al. https://doi.org/10.1098/rsos.231553
- Application of Continuous Data Assimilation in High-Resolution Ocean Modeling A. Larios et al. https://doi.org/10.4208/cicp.OA-2023-0208
- Extending the utility of space-borne snow water equivalent observations over vegetated areas with data assimilation J. Pflug et al. https://doi.org/10.5194/hess-28-631-2024
16 citations as recorded by crossref.
- Assessing the value of biogeochemical Argo profiles versus ocean color observations for biogeochemical model optimization in the Gulf of Mexico B. Wang et al. https://doi.org/10.5194/bg-17-4059-2020
- Can assimilation of satellite observations improve subsurface biological properties in a numerical model? A case study for the Gulf of Mexico B. Wang et al. https://doi.org/10.5194/os-17-1141-2021
- The Verification Challenge of Marine Carbon Dioxide Removal K. Fennel https://doi.org/10.1146/annurev-marine-032123-025717
- Impact of assimilating satellite surface velocity observations in the Mercator Ocean International analysis and forecasting global 1/4° system I. Mirouze et al. https://doi.org/10.3389/fmars.2024.1376999
- Design of an Observing System Simulation Experiment for the Operational Model of the Southwestern Coast of Iberia (SOMA) F. Mendonça et al. https://doi.org/10.3390/jmse13091830
- An Assessment of Vertical Carbon Flux Parameterizations Using Backscatter Data From BGC Argo B. Wang & K. Fennel https://doi.org/10.1029/2022GL101220
- Ocean biogeochemical modelling K. Fennel et al. https://doi.org/10.1038/s43586-022-00154-2
- Assessment of an ensemble-based data assimilation system for a shallow estuary M. Khanarmuei et al. https://doi.org/10.1016/j.ecss.2021.107389
- Data assimilation in emergency department simulations for real-time disaster response R. Delos Reyes et al. https://doi.org/10.1016/j.ijdrr.2026.105995
- Assimilating synthetic Biogeochemical-Argo and ocean colour observations into a global ocean model to inform observing system design D. Ford https://doi.org/10.5194/bg-18-509-2021
- Assimilation of GPS-tracked drifter data to improve the Eulerian velocity fields in an estuary M. Khanarmuei et al. https://doi.org/10.1016/j.ecss.2021.107575
- Robustness of Observing System Simulation Experiments N. Privé et al. https://doi.org/10.16993/tellusa.3254
- An Assessment of Ensemble Kalman Filter and Azouani-Olson-Titi Algorithms for Data Assimilation: A Comparative Study N. Ning & C. Victor https://doi.org/10.4208/cicp.oa-2024-0167
- Coupling an agent-based model and an ensemble Kalman filter for real-time crowd modelling K. Suchak et al. https://doi.org/10.1098/rsos.231553
- Application of Continuous Data Assimilation in High-Resolution Ocean Modeling A. Larios et al. https://doi.org/10.4208/cicp.OA-2023-0208
- Extending the utility of space-borne snow water equivalent observations over vegetated areas with data assimilation J. Pflug et al. https://doi.org/10.5194/hess-28-631-2024
Saved (final revised paper)
Latest update: 09 Sep 2026
Short summary
We present a first direct comparison of nonidentical versus identical twin approaches for an ocean data assimilation system. We show that the identical twin approach overestimates the value of assimilating satellite observations and undervalues the benefit of assimilating temperature and salinity profiles. Misleading assessments such as undervaluing the impact of observational assets are problematic and can lead to misguided decisions on balancing investments among different observing assets.
We present a first direct comparison of nonidentical versus identical twin approaches for an...
