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Impact of ERS Scatterometer Winds in ECMWF's Assimilation System

Author

L. Isaksen

Peter Janssen

2003, Technical memorandum, ECMWF Technical Memoranda

File

10123-impact-ers-scatterometer-winds-ecmwfs-assimilation-system.pdf

Comparison of the ECMWF seasonal forecast Systems 1 and 2, including the relative performance for the 1997/8 El Nino

Author

D. Anderson

Tim Stockdale

Magdalena Alonso-Balmaseda

Laura Ferranti

Frédéric Vitart

F. Doblas-Reyes

Renate Hagedorn

T. Jung

A. Vidard

A. Troccoli

T.N. Palmer

2003, Technical memorandum, ECMWF Technical Memoranda

File

7728-comparison-ecmwf-seasonal-forecast-systems-1-and-2-including-relative-performance-19978-el.pdf

The influence of physical processes on extratropical singular vectors

Author

M.M. Coutinho

B.J. Hoskins

Roberto Buizza

2003, Technical memorandum, ECMWF Technical Memoranda

File

8799-influence-physical-processes-extratropical-singular-vectors.pdf

A finite-element scheme for the vertical descretization in the semi-Lagrangian version of the ECMWF model

Author

A. Untch

M. Hortal

2003, Technical memorandum, ECMWF Technical Memoranda

File

12873-finite-element-scheme-vertical-descretization-semi-lagrangian-version-ecmwf-model.pdf

Extending Gal-Chen and Somerville terrain-following coordinate transformation on time-dependent curvilinear boundaries

Author

Nils Wedi

Piotr Smolarkiewicz

2003, Technical memorandum, ECMWF Technical Memoranda

File

13027-extending-gal-chen-somerville-terrain-following-coordinate-transformation-time-dependent.pdf

Soil moisture analysis combining screen-level parameters and microwave brightness temperature: A test with field data

Author

G. Seuffert

H. Wilker

P. Viterbo

J.-F. Mahfouf

M. Drusch

J-C. Calvet

2003, Technical memorandum, ECMWF Technical Memoranda

File

12185-soil-moisture-analysis-combining-screen-level-parameters-and-microwave-brightness-temperature.pdf

Error estimation of buoy, satellite and model wave height data

Author

Peter Janssen

Saleh Abdalla

Hans Hersbach

2003, Technical memorandum, ECMWF Technical Memoranda

File

10240-error-estimation-buoy-satellite-and-model-wave-height-data.pdf

The ECMWF Re-Analysis of the Mesoscale Alpine Programme Special Observing Period

Author

C. Keil

Carla Cardinali

2003, Technical memorandum, ECMWF Technical Memoranda

File

10428-ecmwf-re-analysis-mesoscale-alpine-programme-special-observing-period.pdf

Forecast skill of targeted observations: a singular vector based diagnostic

Author

Carla Cardinali

Roberto Buizza

2003, Technical memorandum, ECMWF Technical Memoranda

File

8581-forecast-skill-targeted-observations-singular-vector-based-diagnostic.pdf

A convection scheme for data assimilation: description and initial tests.

Author

Philippe Lopez

E. Moreau

2003, Technical memorandum, ECMWF Technical Memoranda

File

10796-convection-scheme-data-assimilation-description-and-initial-tests.pdf

Diagnostics of linear and incremental approximations in 4D-Var

Author

Y. Trémolet

2003, Technical memorandum, ECMWF Technical Memoranda

File

12814-diagnostics-linear-and-incremental-approximations-4d-var.pdf

Estimation of entropy reduction and degrees of freedom for signal for large variational analysis systems

Author

Mike Fisher

2003, Technical memorandum, ECMWF Technical Memoranda

File

9402-estimation-entropy-reduction-and-degrees-freedom-signal-large-variational-analysis-systems.pdf

CMOD5 An improved geophysical model function for ERS C-band scatterometry

Author

Hans Hersbach

2003, Technical memorandum, ECMWF Technical Memoranda

File

9861-cmod5-improved-geophysical-model-function-ers-c-band-scatterometry.pdf

A comparison of temperature density forecasts from GARCH and atmospheric models

Author

J.P. Taylor

Roberto Buizza

2003, Technical memorandum, ECMWF Technical Memoranda

File

12579-comparison-temperature-density-forecasts-garch-and-atmospheric-models.pdf

Retrieving N_2O from nadir viewing infrared spectrometers

Author

A.M. Lubrano

G. Masiello

Marco Matricardi

C. Serio

2003, Technical memorandum, ECMWF Technical Memoranda

File

10855-retrieving-n2o-nadir-viewing-infrared-spectrometers.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

Computation of optimal perturbations using a local projection operator: A winter casestudy

Author

Roberto Buizza

1993, Technical memorandum, ECMWF Technical Memoranda

File

8413-computation-optimal-perturbations-using-local-projection-operator-winter-casestudy.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

Variational assimilation at ECMWF

Author

P. Courtier

Erik Andersson

W.A. Heckley

G.A. Kelly

J. Pailleux

Florence Rabier

Jean-Noël Thépaut

P. Undén

Drasko Vasiljevic

Carla Cardinali

J. Eyre

M. Hamrud

J. Haseler

A. Hollingsworth

A. McNally

A. Stoffelen

1993, Technical memorandum, ECMWF Technical Memoranda

File

8786-variational-assimilation-ecmwf.pdf

Synoptic cloudiness validation in the ECMWF model

Author

N.G. Kvamstø

1993, Technical memorandum, ECMWF Technical Memoranda

File

10579-synoptic-cloudiness-validation-ecmwf-model.pdf

Impact of a simple vertical diffusion scheme and of the optimisation time interval onoptimal unstable structures

Author

Roberto Buizza

1993, Technical memorandum, ECMWF Technical Memoranda

File

8412-impact-simple-vertical-diffusion-scheme-and-optimisation-time-interval-onoptimal-unstable.pdf

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Impact of ERS Scatterometer Winds in ECMWF's Assimilation System

Comparison of the ECMWF seasonal forecast Systems 1 and 2, including the relative performance for the 1997/8 El Nino

The influence of physical processes on extratropical singular vectors

A finite-element scheme for the vertical descretization in the semi-Lagrangian version of the ECMWF model

Extending Gal-Chen and Somerville terrain-following coordinate transformation on time-dependent curvilinear boundaries

Soil moisture analysis combining screen-level parameters and microwave brightness temperature: A test with field data

Error estimation of buoy, satellite and model wave height data

The ECMWF Re-Analysis of the Mesoscale Alpine Programme Special Observing Period

Forecast skill of targeted observations: a singular vector based diagnostic

A convection scheme for data assimilation: description and initial tests.

Diagnostics of linear and incremental approximations in 4D-Var

Estimation of entropy reduction and degrees of freedom for signal for large variational analysis systems

CMOD5 An improved geophysical model function for ERS C-band scatterometry

A comparison of temperature density forecasts from GARCH and atmospheric models

Retrieving N_2O from nadir viewing infrared spectrometers

Sensitivity of forecast error to initial conditions using the adjoint method

Computation of optimal perturbations using a local projection operator: A winter casestudy

Evaluation of forecast error covariance matrix

Variational assimilation at ECMWF

Synoptic cloudiness validation in the ECMWF model

Impact of a simple vertical diffusion scheme and of the optimisation time interval onoptimal unstable structures

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