Search ECMWF publications

11787-four-dimensional-assimilation-presence-baroclinic-instability.pdf

P. Courtier

1991, Technical memorandum, ECMWF Technical Memoranda

File

Sensitivity of forecast error to initial conditions using the adjoint method

Author

11789-sensitivity-forecast-error-initial-conditions-using-adjoint-method.pdf

P. Courtier

M. Herveou

B. Strauss

A Persson

1993, Technical memorandum, ECMWF Technical Memoranda

File

The ECMWF operational implementation of four dimensional variational assimilation. Part I: Experimental results with simplified physics

Author

11794-ecmwf-operational-implementation-four-dimensional-variational-assimilation-part-i-experimental.pdf

H Järvinen

E. Klinker

J.-F. Mahfouf

Adrian Simmons

1999, Technical memorandum, ECMWF Technical Memoranda

File

Sensitivity of two-day forecast errors over the Northern Hemisphere to initial conditions

Author

11795-sensitivity-two-day-forecast-errors-over-northern-hemisphere-initial-conditions.pdf

E. Klinker

P. Courtier

A. Hollingsworth

1994, Technical memorandum, ECMWF Technical Memoranda

File

Recent experimentation on 4D-Var and first results from a Simplified Kalman Filter

Author

11798-recent-experimentation-4d-var-and-first-results-simplified-kalman-filter.pdf

J.-F. Mahfouf

Mike Fisher

H Järvinen

Adrian Simmons

Erik Andersson

F. Bouttier

P. Courtier

M. Hamrud

J. Haseler

A. Hollingsworth

L. Isaksen

E. Klinker

S. Saarinen

C. Temperton

Jean-Noël Thépaut

P. Undén

Drasko Vasiljevic

1997, Technical memorandum, ECMWF Technical Memoranda

File

The ECMWF implementation of three dimensional variational assimilation. Part II: Structure functions

Author

11799-ecmwf-implementation-three-dimensional-variational-assimilation-part-ii-structure-functions.pdf

A. McNally

Erik Andersson

P. Courtier

P. Undén

J. Eyre

A. Hollingsworth

F. Bouttier

1998, Technical memorandum, ECMWF Technical Memoranda

File

Evaluation of forecast error covariance matrix

Author

11801-evaluation-forecast-error-covariance-matrix.pdf

A. McNally

1993, Technical memorandum, ECMWF Technical Memoranda

File

A valley-filled orographic representation in numerical weather forecast models

Author

D. Radinovic

1985, Technical memorandum, ECMWF Technical Memoranda

File

11812-valley-filled-orographic-representation-numerical-weather-forecast-models.pdf

ECMWF study to quantify the interaction between terrestrial and space-based observing systems on Numerical Weather Prediction skill

Author

G. Radnóti

Peter Bauer

A. McNally

Andras Horányi

2012, Technical memorandum, ECMWF Technical Memoranda

File

11814-ecmwf-study-quantify-interaction-between-terrestrial-and-space-based-observing-systems.pdf

ECMWF study on the impact of future developments of the space-based observing system on Numerical Weather Prediction

Author

G. Radnóti

Peter Bauer

A. McNally

Carla Cardinali

Sean Healy

Patricia de Rosnay

2010, Technical memorandum, ECMWF Technical Memoranda

File

11815-ecmwf-study-impact-future-developments-space-based-observing-system-numerical-weather.pdf

Diagnostics of linear and incremental approximations in 4D-Var revisited for higher resolution analysis

Author

G. Radnóti

Y. Trémolet

Erik Andersson

L. Isaksen

E. Hólm

Marta Janiskova

2005, Technical memorandum, ECMWF Technical Memoranda

File

11816-diagnostics-linear-and-incremental-approximations-4d-var-revisited-higher-resolution-analysis.pdf

Practical considerations concerning the use of the planetary boundary layer top as acoordinate surface

Author

D.A. Randall

1985, Technical memorandum, ECMWF Technical Memoranda

File

11821-practical-considerations-concerning-use-planetary-boundary-layer-top-acoordinate-surface.pdf

Incorporating state-dependent temperature-salinity constraints in the background error covariance of variational ocean data assimilation.

Author

S. Ricci

A.T. Weaver

J. Vialard

P. Rogel

2004, Technical memorandum, ECMWF Technical Memoranda

File

11895-incorporating-state-dependent-temperature-salinity-constraints-background-error-covariance.pdf

Verification statistics and evaluations of ECMWF forecasts in 2006-2007.

Author

A Ghelli

G. van der Grijn

Martin Leutbecher

11901-verification-statistics-and-evaluations-ecmwf-forecasts-2006-2007.pdf

Ervin Zsótér

2008, Technical memorandum, ECMWF Technical Memoranda

File

Verification statistics and evaluations of ECMWF forecasts in 2005-2006.

Author

Roberto Buizza

11902-verification-statistics-and-evaluations-ecmwf-forecasts-2005-2006.pdf

A Ghelli

G. van der Grijn

Ervin Zsótér

2006, Technical memorandum, ECMWF Technical Memoranda

File

Skill and relative economic value of the ECMWF Ensemble Prediction System

Author

11903-skill-and-relative-economic-value-ecmwf-ensemble-prediction-system.pdf

1998, Technical memorandum, ECMWF Technical Memoranda

File

Effect of ensemble size on reliability and Brier score

Author

11904-effect-ensemble-size-reliability-and-brier-score.pdf

2000, Technical memorandum, ECMWF Technical Memoranda

File

Verification statistics and evaluations of ECMWF forecasts in 2010-2011.

Author

Jean-Raymond Bidlot

A Ghelli

Thomas Haiden

Tim Hewson

Martin Janousek

F. Prates

11916-verification-statistics-and-evaluations-ecmwf-forecasts-2010-2011.pdf

2011, Technical memorandum, ECMWF Technical Memoranda

File

Verification statistics and evaluations of ECMWF forecasts in 2011-2012.

Author

Jean-Raymond Bidlot

A Ghelli

Thomas Haiden

Tim Hewson

Martin Janousek

F. Prates

11917-verification-statistics-and-evaluations-ecmwf-forecasts-2011-2012.pdf

2012, Technical memorandum, ECMWF Technical Memoranda

File

Verification statistics and evaluations of ECMWF forecasts in 2008-2009.

Author

Jean-Raymond Bidlot

A Ghelli

C. Gibert

Tim Hewson

Janousek Prates