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Improved middle atmosphere climate and forecasts in the ECMWF model through a non-orographic gravity wave drag parametrization

Author

A. Orr

Peter Bechtold

J. Scinocca

M. Ern

Marta Janiskova

2010, Technical memorandum, ECMWF Technical Memoranda

File

11450-improved-middle-atmosphere-climate-and-forecasts-ecmwf-model-through-non-orographic-gravity.pdf

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

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

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

Verification statistics and evaluations of ECMWF forecasts in 2009-2010.

Author

A Ghelli

F. Prates

2010, Technical memorandum, ECMWF Technical Memoranda

File

11920-verification-statistics-and-evaluations-ecmwf-forecasts-2009-2010.pdf

Developments in diagnostics research

Author

T. Jung

P. Berrisford

Carla Cardinali

Franco Molteni

Magdalena Alonso-Balmaseda

Gianpaolo Balsamo

Massimo Bonavita

Roberto Buizza

Mohamed Dahoui

Anotonio Garcia-Mendez

Martin Leutbecher

Philippe Lopez

Y. Trémolet

Frédéric Vitart

2010, Technical memorandum, ECMWF Technical Memoranda

File

11984-developments-diagnostics-research.pdf

A new equitable score suitable for verifying precipitation in NWP

Author

Mark Rodwell

David Richardson

Tim Hewson

2010, Technical memorandum, ECMWF Technical Memoranda

File

11988-new-equitable-score-suitable-verifying-precipitation-nwp.pdf

Jason-2 OGDR Wind and wave products: random error estimation

Author

Saleh Abdalla

Peter Janssen

Jean-Raymond Bidlot

2010, Technical memorandum, ECMWF Technical Memoranda

File

7628-jason-2-ogdr-wind-and-wave-products-random-error-estimation.pdf

Analysis and forecast impact of the main humidity observing systems

Author

Erik Andersson

E. Hólm

Peter Bauer

Anton Beljaars

G.A. Kelly

A. McNally

Adrian Simmons

Jean-Noël Thépaut

A.M. Tompkins

2006, Technical memorandum, ECMWF Technical Memoranda

File

7766-analysis-and-forecast-impact-main-humidity-observing-systems.pdf

Direct 4D-Var assimilation of all-sky radiances. Part I: Implementation

Author

Peter Bauer

Alan Geer

Philippe Lopez

Deborah Salmond

2010, Technical memorandum, ECMWF Technical Memoranda

File

7987-direct-4d-var-assimilation-all-sky-radiances-part-i-implementation.pdf

Multiple-scattering microwave radiative transfer for data assimilation applications.

Author

Peter Bauer

E. Moreau

F. Chevallier

U. O'Keeffe

2006, Technical memorandum, ECMWF Technical Memoranda

File

7989-multiple-scattering-microwave-radiative-transfer-data-assimilation-applications.pdf

Implementation of 1D+4D-Var assimilation of precipitation affected microwave radiances at ECMWF, Part I: 1D-Var.

Author

Peter Bauer

Philippe Lopez

Angela Benedetti

Deborah Salmond

E. Moreau

2006, Technical memorandum, ECMWF Technical Memoranda

File

7995-implementation-1d4d-var-assimilation-precipitation-affected-microwave-radiances-ecmwf-part-i-1d.pdf

Assimilation of cloud and precipitation affected microwave radiances

Author

Peter Bauer

Philippe Lopez

Deborah Salmond

Alan Geer

2006, Technical memorandum, ECMWF Technical Memoranda

File

7998-assimilation-cloud-and-precipitation-affected-microwave-radiances.pdf

Implementation of 1D+4D-Var assimilation of precipitation affected microwave radiances at ECMWF, Part II: 4D-Var.

Author

Peter Bauer

Philippe Lopez

Deborah Salmond

Angela Benedetti

S. Saarinen

M. Bonazzola

2006, Technical memorandum, ECMWF Technical Memoranda

File

7999-implementation-1d4d-var-assimilation-precipitation-affected-microwave-radiances-ecmwf-part-ii.pdf

Background error statistics for aerosols

Author

Angela Benedetti

Mike Fisher

2006, Technical memorandum, ECMWF Technical Memoranda

File

8059-background-error-statistics-aerosols.pdf

Estimating background-error variances with the ECMWF Ensemble of Data Assimilations system: the effect of ensemble size and day-to-day variability

Author

Massimo Bonavita

L. Raynaud

L. Isaksen

2010, Technical memorandum, ECMWF Technical Memoranda

File

8268-estimating-background-error-variances-ecmwf-ensemble-data-assimilations-system-effect-ensemble.pdf

Assimilation of MIPAS limb radiances in the ECMWF system. Part I: Experiments with a 1-dimensional observation operator.

Author

Niels Bormann

Jean-Noël Thépaut

2006, Technical memorandum, ECMWF Technical Memoranda

File

8289-assimilation-mipas-limb-radiances-ecmwf-system-part-i-experiments-1-dimensional-observation.pdf

Assimilation of MIPAS limb radiances in the ECMWF system. Part II: Experiments with a 2-dimensional observation operator and comparison to retrieval assimilation

Author

Niels Bormann

Sean Healy

M. Hamrud

2006, Technical memorandum, ECMWF Technical Memoranda

File

8311-assimilation-mipas-limb-radiances-ecmwf-system-part-ii-experiments-2-dimensional-observation.pdf

Impact of truncation on variable resolution forecasts

Author

Roberto Buizza

2010, Technical memorandum, ECMWF Technical Memoranda

File

8431-impact-truncation-variable-resolution-forecasts.pdf

Horizontal resolution impact on short- and long-range forecast error

Author

Roberto Buizza

2010, Technical memorandum, ECMWF Technical Memoranda

File

8432-horizontal-resolution-impact-short-and-long-range-forecast-error.pdf

The new ECMWF Variable Resolution Ensemble Prediction System (VAREPS): methodology and validation.

Author

Roberto Buizza

Jean-Raymond Bidlot

Nils Wedi

Manuel Fuentes

M. Hamrud

G. Holt

T.N. Palmer

Frédéric Vitart

2006, Technical memorandum, ECMWF Technical Memoranda

File

8472-new-ecmwf-variable-resolution-ensemble-prediction-system-vareps-methodology-and-validation.pdf

Forecast quality assessment of the ENSEMBLES seasonal-to-decadal Stream 2 hindcasts

Author

F. Doblas-Reyes

Antje Weisheimer

T.N. Palmer

J. Murphy

D.M. Smith

2010, Technical memorandum, ECMWF Technical Memoranda

File

9071-forecast-quality-assessment-ensembles-seasonal-decadal-stream-2-hindcasts.pdf

Decadal climate prediction with the ECMWF coupled forecast system: Impact of ocean observations

Author

F. Doblas-Reyes

Magdalena Alonso-Balmaseda

Antje Weisheimer

T.N. Palmer

2010, Technical memorandum, ECMWF Technical Memoranda

File

9078-decadal-climate-prediction-ecmwf-coupled-forecast-system-impact-ocean-observations.pdf

Search ECMWF publications

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Improved middle atmosphere climate and forecasts in the ECMWF model through a non-orographic gravity wave drag parametrization

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

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

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

Verification statistics and evaluations of ECMWF forecasts in 2009-2010.

Developments in diagnostics research

A new equitable score suitable for verifying precipitation in NWP

Jason-2 OGDR Wind and wave products: random error estimation

Analysis and forecast impact of the main humidity observing systems

Direct 4D-Var assimilation of all-sky radiances. Part I: Implementation

Multiple-scattering microwave radiative transfer for data assimilation applications.

Implementation of 1D+4D-Var assimilation of precipitation affected microwave radiances at ECMWF, Part I: 1D-Var.

Assimilation of cloud and precipitation affected microwave radiances

Implementation of 1D+4D-Var assimilation of precipitation affected microwave radiances at ECMWF, Part II: 4D-Var.

Background error statistics for aerosols

Estimating background-error variances with the ECMWF Ensemble of Data Assimilations system: the effect of ensemble size and day-to-day variability

Assimilation of MIPAS limb radiances in the ECMWF system. Part I: Experiments with a 1-dimensional observation operator.

Assimilation of MIPAS limb radiances in the ECMWF system. Part II: Experiments with a 2-dimensional observation operator and comparison to retrieval assimilation

Impact of truncation on variable resolution forecasts

Horizontal resolution impact on short- and long-range forecast error

The new ECMWF Variable Resolution Ensemble Prediction System (VAREPS): methodology and validation.

Forecast quality assessment of the ENSEMBLES seasonal-to-decadal Stream 2 hindcasts

Decadal climate prediction with the ECMWF coupled forecast system: Impact of ocean observations

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