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4D-Var: From early results to operational implementation

Jean-Noël Thépaut
2018, Symposium: 20 years of 4D-Var at ECMWF, Presentation.

18002-4d-var-early-results-operational-implementation.pdf
A few reminiscences about the genesis of 4D-Var, and what followed

Talagrand O.
2018, Symposium: 20 years of 4D-Var at ECMWF, Presentation.

17995-few-reminiscences-about-genesis-4d-var-and-what-followed.pdf
4D-Var data assimilation system for a limited-area model in JMA and the assimilation of precipitation amounts

Koizumu K.
2018, Symposium: 20 years of 4D-Var at ECMWF, Presentation.

18000-4d-var-data-assimilation-system-limited-area-model-jma-and-assimilation-precipitation-amounts.pdf
The big leap: Replacing 4D-Var with 4D-EnVar and life ever since

M. Buehner, J.-F. Caron, Ping Du
2018, Symposium: 20 years of 4D-Var at ECMWF, Presentation.

17997-big-leap-replacing-4d-var-4d-envar-and-life-ever.pdf
The early years of variational data assimilation: A perspective from NCEP

Derber J.
2018, Symposium: 20 years of 4D-Var at ECMWF, Presentation.

17999-early-years-variational-data-assimilation-perspective-ncep.pdf
Advancing data assimilation in global NWP: the ECMWF perspective

Massimo Bonavita
2018, Symposium: 20 years of 4D-Var at ECMWF, Presentation.

17996-advancing-data-assimilation-global-nwp-ecmwf-perspective.pdf
20 year of 4D-Var, the decision making process

Courtier P.
2018, Symposium: 20 years of 4D-Var at ECMWF, Presentation.

17998-20-year-4d-var-decision-making-process.pdf
A comparision of hybrid variational data assimilation methods in the Met Office global NWP system

Lorenc A.
2018, Symposium: 20 years of 4D-Var at ECMWF, Presentation.

18001-comparision-hybrid-variational-data-assimilation-methods-met-office-global-nwp-system.pdf