Other references
ECMWF Web site
- Training course: http://www.ecmwf.int/services/training/rcourse_notes/data_assimilation.html
- Fisher, M., 2001:
- Assimilation techniques: 3D-Var
- Assimilation techniques: 4D-Var
- Assimilation techniques: Approximate Kalman Filters and Singular Vectors
- Bouttier, F. and P. Courtier, 2000:
- Data assimilation concepts and methods
- Järvinen, H., 1998: Observations and diagnostic tools for data assimilation: