Associated Projects

Ensemble data assimilation for ocean biogeochemical state and parameter estimation at different sites

Submitted by Laurent Bertino on 19 March, 2018 - 13:43

M. E. Gharamti, Tjiputra, J., Bethke, I., Samuelsen, A., Skjelvan, I., Bentsen, M., and Bertino, L., “Ensemble data assimilation for ocean biogeochemical state and parameter estimation at different sites”, Ocean Modelling, vol. 112, pp. 65 - 89, 2017.

Sea Ice Data Assimilation

Submitted by Laurent Bertino on 19 March, 2018 - 13:06

M. Buehner, Bertino, L., Caya, A., Heimbach, P., and Smith, G., “Sea Ice Data Assimilation”, Cambridge University Press, Cambridge, USA, Chapter 4, 2017.

Flow-dependent assimilation of sea surface temperature in isopycnal coordinates with the Norwegian Climate Prediction Model

Submitted by Laurent Bertino on 19 March, 2018 - 11:06

F. Counillon, Keenlyside, N., Bethke, I., Wang, Y., Billeau, S., Shen, M. Lin, and Bentsen, M., “Flow-dependent assimilation of sea surface temperature in isopycnal coordinates with the Norwegian Climate Prediction Model”, Tellus A: Dynamic Meteorology and Oceanography, vol. 68, no. 1, p. 32437, 2016.

Optimising assimilation of hydrographic profiles into isopycnal ocean models with ensemble data assimilation

Submitted by Laurent Bertino on 19 March, 2018 - 11:05

Y. Wang, Counillon, F., Bethke, I., Keenlyside, N., Bocquet, M., and Shen, M. -lin, “Optimising assimilation of hydrographic profiles into isopycnal ocean models with ensemble data assimilation”, Ocean Modelling, vol. 114, pp. 33 - 44, 2017.

Sources of skill in near-term climate prediction: generating initial conditions

Submitted by Laurent Bertino on 19 March, 2018 - 10:04

A. Carrassi, Guemas, V., Doblas-Reyes, F. J., Volpi, D., and Asif, M., “Sources of skill in near-term climate prediction: generating initial conditions”, Climate Dynamics, vol. 47, no. 12, pp. 3693 - 3712, 2016.

Rank Deficiency of Kalman Error Covariance Matrices in Linear Time-Varying System With Deterministic Evolution

Submitted by Laurent Bertino on 19 March, 2018 - 10:03

K. S. Gurumoorthy, Grudzien, C., Apte, A., Carrassi, A., and Jones, C. K. R. T., “Rank Deficiency of Kalman Error Covariance Matrices in Linear Time-Varying System With Deterministic Evolution”, SIAM Journal on Control and Optimization, vol. 55, no. 2, pp. 741 - 759, 2017.

Degenerate Kalman Filter Error Covariances and Their Convergence onto the Unstable Subspace

Submitted by Laurent Bertino on 19 March, 2018 - 10:02

M. Bocquet, Gurumoorthy, K. S., Apte, A., Carrassi, A., Grudzien, C., and Jones, C. K. R. T., “Degenerate Kalman Filter Error Covariances and Their Convergence onto the Unstable Subspace”, SIAM/ASA Journal on Uncertainty Quantification, vol. 5, no. 1, pp. 304 - 333, 2017.

Estimating model evidence using data assimilation

Submitted by Laurent Bertino on 19 March, 2018 - 10:00

A. Carrassi, Bocquet, M., Hannart, A., and Ghil, M., “Estimating model evidence using data assimilation”, Quarterly Journal of the Royal Meteorological Society, vol. 143, no. 703, pp. 866 - 880, 2017.

Alleviating the bias induced by the linear analysis update with an isopycnal ocean model

Submitted by Laurent Bertino on 19 March, 2018 - 09:51

Y. Wang, Counillon, F., and Bertino, L., “Alleviating the bias induced by the linear analysis update with an isopycnal ocean model”, Quarterly Journal of the Royal Meteorological Society, vol. 142, no. 695, pp. 1064 - 1074, 2016.

Online tuning of ocean biogeochemical model parameters using ensemble estimation techniques: Application to a one-dimensional model in the North Atlantic