@inbook{77028, author = {ECMWF and P. White}, title = {IFS Documentation CY23R4 - Part II: Data Assimilation}, abstract = {
Chapter 1 Incremental formulation of 3D/4D variational assimilationan overview
Chapter 2 3D variational assimilation
Chapter 3 4D variational assimilation
Chapter 4 Background term'
Chapter 5 Conventional observational constraints'
Chapter 6 Satellite observational constraints'
Chapter 7 Background, analysis and forecast errors
Chapter 8 Gravity-wave control
Chapter 9 Data partitioning (OBSORT)
Chapter 10 Observation screening
Chapter 11 Analysis of snow
Chapter 12 Land surface analysis
Chapter 13 Sea surface temperature and sea-ice analysis
Chapter 14 Reduced-rank Kalman filter
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