@inbook{74360, author = {ECMWF}, title = {IFS Documentation CY38R1 - Part II: Data Assimilation}, abstract = {

Chapter 1 Overview
Chapter 2 4D variational assimilation
Chapter 3 Tangent-linear physics
Chapter 4 Background term
Chapter 5 Observation operators and observation cost function (Jo)
Chapter 6 Background, analysis and forecast errors
Chapter 7 Gravity-wave control
Chapter 8 Diagnostics
Chapter 9 Observation processing
Chapter 10 Observation screening C
hapter 11 Land-surface analysis
Chapter 12 Analysis of sea-ice concentration and sea surface temperature
Chapter 13 Data flow
References

}, year = {2013}, journal = {IFS Documentation CY38R1}, number = {2}, month = {2013}, publisher = {ECMWF}, url = {https://www.ecmwf.int/node/9243}, doi = {10.21957/kt00qyyhj}, note = {

Operational implementation 19 June 2012

}, language = {eng}, }