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Report on the fifteenth Security Representatives' Meeting, 21-22 May 2007. (Restricted distribution)

Author

P. Prior

2007, Technical memorandum, ECMWF Technical Memoranda

Report on the fourteenth Security Representatives' Meeting , 16-17 May 2006. (Restricted distribution)

Author

P. Prior

2006, Technical memorandum, ECMWF Technical Memoranda

Report on the eighteenth meeting of Computing Representatives 8-9 June 2006

Author

P. Prior

2006, Technical memorandum, ECMWF Technical Memoranda

File

11741-report-eighteenth-meeting-computing-representatives-8-9-june-2006.pdf

Report on the nineteenth meeting of Computing Representatives 22-24 May 2007

Author

P. Prior

2007, Technical memorandum, ECMWF Technical Memoranda

File

11742-report-nineteenth-meeting-computing-representatives-22-24-may-2007.pdf

Report on the tenth Security Representatives' Meeting 23-24 May 2002

Author

complier Prior

2002, Technical memorandum, ECMWF Technical Memoranda

Ensemble prediction of tropical cyclones using targeted diabatic singular vectors

Author

K. Puri

J. Barkmeijer

T.N. Palmer

1999, Technical memorandum, ECMWF Technical Memoranda

File

11750-ensemble-prediction-tropical-cyclones-using-targeted-diabatic-singular-vectors.pdf

Maximum vorticity and maximum tendency charts: Two tools to identify areas of cyclonic activity in a medium range forecast

Author

H. Pümpel

1981, Technical memorandum, ECMWF Technical Memoranda

File

11766-maximum-vorticity-and-maximum-tendency-charts-two-tools-identify-areas-cyclonic-activity.pdf

Program description of a barotropic model on the sphere

Author

J. Quiby

1979, Technical memorandum, ECMWF Technical Memoranda

File

11768-program-description-barotropic-model-sphere.pdf

Mitigating surface temperature errors using approximate radiation updates

Author

Robin Hogan

Alessio Bozzo

2015, Technical memorandum, ECMWF Technical Memoranda

File

11772-mitigating-surface-temperature-errors-using-approximate-radiation-updates.pdf

Four-dimensional assimilation in the presence of baroclinic instability

Author

Florence Rabier

P. Courtier

1991, Technical memorandum, ECMWF Technical Memoranda

File

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

Sensitivity of forecast error to initial conditions using the adjoint method

Author

Florence Rabier

P. Courtier

M. Herveou

B. Strauss

A Persson

1993, Technical memorandum, ECMWF Technical Memoranda

File

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

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

Author

Florence Rabier

H Järvinen

E. Klinker

J.-F. Mahfouf

Adrian Simmons

1999, Technical memorandum, ECMWF Technical Memoranda

File

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

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

Author

Florence Rabier

E. Klinker

P. Courtier

A. Hollingsworth

1994, Technical memorandum, ECMWF Technical Memoranda

File

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

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

Author

Florence Rabier

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

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

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

Author

Florence Rabier

A. McNally

Erik Andersson

P. Courtier

P. Undén

J. Eyre

A. Hollingsworth

F. Bouttier

1998, Technical memorandum, ECMWF Technical Memoranda

File

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

Evaluation of forecast error covariance matrix

Author

Florence Rabier

A. McNally

1993, Technical memorandum, ECMWF Technical Memoranda

File

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

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

David Richardson

Laura Ferranti

A Ghelli

G. van der Grijn

Martin Leutbecher

Frédéric Vitart

Ervin Zsótér

2008, Technical memorandum, ECMWF Technical Memoranda

File

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

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

Author

David Richardson

Roberto Buizza

Laura Ferranti

A Ghelli

G. van der Grijn

Ervin Zsótér

2006, Technical memorandum, ECMWF Technical Memoranda

File

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

Search ECMWF publications

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Report on the fifteenth Security Representatives' Meeting, 21-22 May 2007. (Restricted distribution)

Report on the fourteenth Security Representatives' Meeting , 16-17 May 2006. (Restricted distribution)

Report on the eighteenth meeting of Computing Representatives 8-9 June 2006

Report on the nineteenth meeting of Computing Representatives 22-24 May 2007

Report on the tenth Security Representatives' Meeting 23-24 May 2002

Ensemble prediction of tropical cyclones using targeted diabatic singular vectors

Maximum vorticity and maximum tendency charts: Two tools to identify areas of cyclonic activity in a medium range forecast

Program description of a barotropic model on the sphere

Mitigating surface temperature errors using approximate radiation updates

Four-dimensional assimilation in the presence of baroclinic instability

Sensitivity of forecast error to initial conditions using the adjoint method

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

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

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

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

Evaluation of forecast error covariance matrix

A valley-filled orographic representation in numerical weather forecast models

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

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

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

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

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

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

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

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