References and thanks:
•Ott, Hunt, Szunyogh, Zimin, Kostelich, Corazza, Kalnay, Patil, Yorke, 2003: Local Ensemble Kalman Filtering, MWR, under review.
•Patil, Hunt, Kalnay, Yorke and Ott, 2001: Local low-dimensionality of atmospheric dynamics, PRL.
•Corazza, Kalnay, Patil, Yang, Hunt, Szunyogh, Yorke, 2003: Relationship between bred vectors and the errors of the day. NPG.
•Hunt et al, 2003: 4DEnKF. Submitted to Tellus.
•-----Coupled systems-----
•Cai, Kalnay, and Toth, 2003: Bred Vectors of the Zebiak-Cane Model and their Application to ENSO Predictions.  J. Climate, 16, 40-56.
•Yang et al 2003: Bred vectors in the NASA coupled ocean-atmosphere system. EGS.
•Pena and Kalnay, 2003: Separating fast and slow modes in coupled chaotic systems. Submitted to Nonlinear Proc. in Physics
•Kalnay, 2003: Atmospheric modeling, data assimilation and predictability, Cambridge University Press, 341 pp.
•