4D ensemble Kalman filtering for assimilation of asynchronous observations Conference Paper uri icon


  • A 4-dimensional ensemble Kalman filter method (4DEnKF), which adapts ensemble Kalman filtering to the assimilation of observations that are asynchronous with the analysis cycle, is discussed. In the ideal case of linear dynamics between consecutive analyses, the algorithm is equivalent to Kalman filtering assimilation at each observation time. Tests of 4DEnKF on the Lorenz 40 variable model are conducted.

author list (cited authors)

  • Sauer, T., Hunt, B. R., Yorke, J. A., Zimin, A. V., Ott, E., Kostelichf, E. J., ... Patil, D. J.

publication date

  • June 2004