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Extended-range prediction

Author

Frédéric Vitart

Magdalena Alonso-Balmaseda

Junchen Yao

2019, Technical memorandum, ECMWF Technical Memoranda

File

19286-extended-range-prediction.pdf

Reduced-resolution ocean configurations for efficient testing with the ECMWF coupled model

Author

Christopher Roberts

Antje Weisheimer

Stephanie Johnson

Tim Stockdale

Magdalena Alonso-Balmaseda

2020, Technical memorandum, ECMWF Technical Memoranda

File

19325-reduced-resolution-ocean-configurations-efficient-testing-ecmwf-coupled-model.pdf

Evaluation and impact of aircraft humidity data in ECMWF's NWP system

Author

B. Ingleby

L. Isaksen

T. Kral

2020, Technical memorandum, ECMWF Technical Memoranda

File

19327-evaluation-and-impact-aircraft-humidity-data-ecmwfs-nwp-system.pdf

A new hybrid formulation for the background error covariance in the IFS: evaluation

Author

Sebastien Massart

2019, Technical memorandum, ECMWF Technical Memoranda

File

19340-new-hybrid-formulation-background-error-covariance-ifs-evaluation.pdf

Global stratospheric temperature bias and other stratospheric aspects of ERA5 and ERA5.1

Author

Adrian Simmons

Cornel Soci

Julien Nicolas

Bill Bell

P. Berrisford

Rossana Dragani

Johannes Flemming

Leopold Haimberger

Sean Healy

Hans Hersbach

Andras Horányi

Antje Inness

J. Munoz-Sabater

Raluca Radu

Dinand Schepers

2020, Technical memorandum, ECMWF Technical Memoranda

File

19362-global-stratospheric-temperature-bias-and-other-stratospheric-aspects-era5-and-era51.pdf

Use and Verification of ECMWF products in Member and Co-operating States

Author

Tim Hewson

2021, Technical memorandum, ECMWF Technical Memoranda

File

20179-use-and-verification-ecmwf-products-member-and-co-operating-states.pdf

Investigating the use of Lambertian reflection in the assimilation of surface-sensitive microwave sounding radiances over snow and sea-ice

Author

Niels Bormann

2021, Technical memorandum, ECMWF Technical Memoranda

File

20180-investigating-use-lambertian-reflection-assimilation-surface-sensitive-microwave-sounding.pdf

Evaluating the impact of prognostic ozone in IFS NWP forecasts

Author

Ryan Williams

Robin Hogan

Inna Polichtchouk

Michaela Hegglin

Tim Stockdale

Johannes Flemming

2021, Technical memorandum, ECMWF Technical Memoranda

File

20190-evaluating-impact-prognostic-ozone-ifs-nwp-forecasts.pdf

Tropical cyclone activities at ECMWF

Author

Linus Magnusson

Sharan Majumdar

Rebecca Emerton

David Richardson

Magdalena Alonso-Balmaseda

Antonino Bonanni

Andy Brown

Hilda Carr

Giovanna De Chiara

Stephen English

Thomas Haiden

Sean Healy

Tony McNally

Fernando Prates

Michael Rennie

2021, Technical memorandum, ECMWF Technical Memoranda

File

20228-tropical-cyclone-activities-ecmwf.pdf

Investigating biases in the representation of the Pacific sub-tropical jet stream and associated teleconnections (a UGROW sub-project)

Author

Frédéric Vitart

Rebecca Emerton

Mark Rodwell

Magdalena Alonso-Balmaseda

Thomas Haiden

Stephanie Johnson

L. Magnusson

Christopher Roberts

Irina Sandu

2022, Technical memorandum, ECMWF Technical Memoranda

File

20281-investigating-biases-representation-pacific-sub-tropical-jet-stream-and-associated.pdf

Notes on shallow water extension of Miles Theory

Author

Peter Janssen

2022, Technical memorandum, ECMWF Technical Memoranda

File

20286-notes-shallow-water-extension-miles-theory.pdf

Validation of IFS+RTTOV/MFASIS solar reflectances against GOES-16 ABI obs

Author

Philippe Lopez

Marco Matricardi

Mark Fielding

2022, Technical memorandum, ECMWF Technical Memoranda

File

20332-validation-ifsrttovmfasis-solar-reflectances-against-goes-16-abi-obs.pdf

Evaluation and optimizaton of orographic drag in the IFS

Author

Takafumi Kanehama

Irina Sandu

Anton Beljaars

Annelize van Niekerk

Nils Wedi

Souhail Boussetta

Simon Lang

Stephanie Johnson

Linus Magnusson

2022, Technical memorandum, ECMWF Technical Memoranda

File

20333-evaluation-and-optimizaton-orographic-drag-ifs.pdf

Calculating the Cosine of the Solar Zenith Angle for Thermal Comfort Indices

Author

Chloe Brimicombe

Simon Smart

Hannah Cloke

2022, Technical memorandum, ECMWF Technical Memoranda

File

20336-calculating-cosine-solar-zenith-angle-thermal-comfort-indices.pdf

Improved surface treatment for all-sky microwave observations

Author

2022, Technical memorandum, ECMWF Technical Memoranda

File

20337-improved-surface-treatment-all-sky-microwave-observations.pdf

Statistical modelling of 2m temperature and 10m wind speed forecast errors

Author

Fenwick Cooper

2022, Technical memorandum, ECMWF Technical Memoranda

File

20342-statistical-modelling-2m-temperature-and-10m-wind-speed-forecast-errors.pdf

Summary of the UGROW subproject on tropospheric temperature bias during JJA over the Northern Hemisphere

Author

Linus Magnusson

Magdalena Alonso-Balmaseda

Mohamed Dahoui

Richard Forbes

Thomas Haiden

David Lavers

Irina Sandu

Steffen Tietsche

2022, Technical memorandum, ECMWF Technical Memoranda

File

20356-summary-ugrow-subproject-tropospheric-temperature-bias-during-jja-over-northern-hemisphere.pdf

Variational quality control

Author

Erik Andersson

H Järvinen

1998, Technical memorandum, ECMWF Technical Memoranda

File

7759-variational-quality-control.pdf

High-frequency AMDAR data - a European aircraft data collection trial and impact assessment.

Author

Erik Andersson

Carla Cardinali

B. Truscott

T. Hovberg

2005, Technical memorandum, ECMWF Technical Memoranda

File

7765-high-frequency-amdar-data-european-aircraft-data-collection-trial-and-impact-assessment.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

Will the 4D-Var approach be defeated by nonlinearity?

Author

Erik Andersson

Mike Fisher

E. Hólm

L. Isaksen

G. Radnóti

Y. Trémolet

2005, Technical memorandum, ECMWF Technical Memoranda

File

7768-will-4d-var-approach-be-defeated-nonlinearity.pdf

Preliminary assessment of a 50-day run with the ECMWF operational forecast model

Author

K Arpe

1980, Technical memorandum, ECMWF Technical Memoranda

File

7811-preliminary-assessment-50-day-run-ecmwf-operational-forecast-model.pdf

Changes in the ECMWF analysis-forecasting scheme and the systematic error of the model

Author

K Arpe

1989, Technical memorandum, ECMWF Technical Memoranda

File

7812-changes-ecmwf-analysis-forecasting-scheme-and-systematic-error-model.pdf

Surface fluxes from short range forecasts

Author

K Arpe

D.M. Burridge

1990, Technical memorandum, ECMWF Technical Memoranda

File

7830-surface-fluxes-short-range-forecasts.pdf

Search ECMWF publications

Sort by

Extended-range prediction

Reduced-resolution ocean configurations for efficient testing with the ECMWF coupled model

Evaluation and impact of aircraft humidity data in ECMWF's NWP system

A new hybrid formulation for the background error covariance in the IFS: evaluation

Global stratospheric temperature bias and other stratospheric aspects of ERA5 and ERA5.1

Use and Verification of ECMWF products in Member and Co-operating States

Investigating the use of Lambertian reflection in the assimilation of surface-sensitive microwave sounding radiances over snow and sea-ice

Evaluating the impact of prognostic ozone in IFS NWP forecasts

Tropical cyclone activities at ECMWF

Investigating biases in the representation of the Pacific sub-tropical jet stream and associated teleconnections (a UGROW sub-project)

Notes on shallow water extension of Miles Theory

Validation of IFS+RTTOV/MFASIS solar reflectances against GOES-16 ABI obs

Evaluation and optimizaton of orographic drag in the IFS

Calculating the Cosine of the Solar Zenith Angle for Thermal Comfort Indices

Improved surface treatment for all-sky microwave observations

Statistical modelling of 2m temperature and 10m wind speed forecast errors

Summary of the UGROW subproject on tropospheric temperature bias during JJA over the Northern Hemisphere

Variational quality control

High-frequency AMDAR data - a European aircraft data collection trial and impact assessment.

Analysis and forecast impact of the main humidity observing systems

Will the 4D-Var approach be defeated by nonlinearity?

Preliminary assessment of a 50-day run with the ECMWF operational forecast model

Changes in the ECMWF analysis-forecasting scheme and the systematic error of the model

Surface fluxes from short range forecasts

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