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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

Evaluation of ECMWF forecasts, including the 2021 upgrade

Author

Thomas Haiden

Fernando Prates

2021, Technical memorandum, ECMWF Technical Memoranda

File

20142-evaluation-ecmwf-forecasts-including-2021-upgrade.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

Low frequency variability and trends in surface air temperature and humidity from ERA5 and other datasets

Author

Adrian Simmons

Hans Hersbach

Joaquin Munoz-Sabater

Julien Nicolas

Freja Vamborg

Paul Berrisford

Patricia de Rosnay

Kate Willett

Jack Woollen

2021, Technical memorandum, ECMWF Technical Memoranda

File

19911-low-frequency-variability-and-trends-surface-air-temperature-and-humidity-era5-and-other.pdf

On the consequences of nonlinearity and gravity-capillary waves on wind-wave interaction

Author

Peter Janssen

Jean-Raymond Bidlot

2021, Technical memorandum, ECMWF Technical Memoranda

File

19943-consequences-nonlinearity-and-gravity-capillary-waves-wind-wave-interaction.pdf

Experimenting with a Clear Air Turbulence (CAT) Index from the IFS

Author

Peter Bechtold

M Bramberger

A. Dörnbrack

L. Isaksen

Martin Leutbecher

2021, Technical memorandum, ECMWF Technical Memoranda

File

19870-experimenting-clean-air-turbulence-cat-index-ifs.pdf

Stratospheric modelling and assimilation

Author

Sean Healy

Michael Rennie

Johannes Flemming

Stephen English

Lars Isaksen

Filip Vána

Sonja Gisinger

Nicholas Byrne

2021, Technical memorandum, ECMWF Technical Memoranda

File

19875-stratospheric-modelling-and-assimilation.pdf

Machine learning at ECMWF: A roadmap for the next 10 years

Author

Peter Düben

Umberto Modigliani

Alan Geer

Stephan Siemen

Florian Pappenberger

Peter Bauer

Andy Brown

Martin Palkovic

Baudouin Raoult

Nils Wedi

Vasileios Baousis

2021, Technical memorandum, ECMWF Technical Memoranda

File

19877-machine-learning-ecmwf-roadmap-next-10-years.pdf

Evaluation of ECMWF forecasts, including the 2020 upgrade

Author

Thomas Haiden

Crtistina Prates

2021, Technical memorandum, ECMWF Technical Memoranda

File

19879-evaluation-ecmwf-forecasts-including-2020-upgrade.pdf

Vertical wind shear and convective storms

Author

Tomas Pucik

Pieter Groenemeijer

Ivan Tsonevsky

2021, Technical memorandum, ECMWF Technical Memoranda

File

19905-vertical-wind-shear-and-convective-storms.pdf

Floods, droughts, fire and beyond ... are existing forecasts enough?

Author

Ervin Zsótér

C. Baugh

Eleanor Hansford

K O'Regan

Claudia Vitolo

Fredrik Wetterhall

C. Prudhomme

2021, Technical memorandum, ECMWF Technical Memoranda

File

19907-floods-droughts-fire-and-beyond-are-existing-forecasts-enough.pdf

Report on the seventeenth meeting of Computing Representatives, 19-20 May 2005.

Author

P. Prior

2005, Technical memorandum, ECMWF Technical Memoranda

File

11738-report-seventeenth-meeting-computing-representatives-19-20-may-2005.pdf

A comparison of adaptive observing guidance for Atlantic tropical cyclones.

Author

S. Majumdar

S.D. Aberson

C.H. Bishop

Roberto Buizza

M.S. Peng

C. Reynolds

2005, Technical memorandum, ECMWF Technical Memoranda

File

10946-comparison-adaptive-observing-guidance-atlantic-tropical-cyclones.pdf

Ice supersaturation in the ECMWF Integrated Forecast System.

Author

A.M. Tompkins

K. Gierens

G. Rädel

2005, Technical memorandum, ECMWF Technical Memoranda

File

12788-ice-supersaturation-ecmwf-integrated-forecast-system.pdf

Report on the thirteenth Security Representatives' Meeting, 17-18 May 2005. (Restricted distribution)

Author

P. Prior

2005, Technical memorandum, ECMWF Technical Memoranda

Accounting for an imperfect model in 4D-Var. [Comment: revised October 2006]

Author

Y. Trémolet

2005, Technical memorandum, ECMWF Technical Memoranda

File

12845-accounting-imperfect-model-4d-var-comment-revised-october-2006.pdf

A multivariate treatment of bias for sequential data assimilation: application to the tropical oceans.

Author

Magdalena Alonso-Balmaseda

D.P. Dee

A. Vidard

D.L.T. Anderson

2005, Technical memorandum, ECMWF Technical Memoranda

File

7910-multivariate-treatment-bias-sequential-data-assimilation-application-tropical-oceans.pdf

Impact of increasing greenhouse gas concentrations in seasonal ensemble forecasts.

Author

F. Doblas-Reyes

Renate Hagedorn

T.N. Palmer

J.-J. Morcrette

2005, Technical memorandum, ECMWF Technical Memoranda

File

9084-impact-increasing-greenhouse-gas-concentrations-seasonal-ensemble-forecasts.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

Progress in ocean wave forecasting at ECMWF.

Author

Peter Janssen

Jean-Raymond Bidlot

Saleh Abdalla

Hans Hersbach

2005, Technical memorandum, ECMWF Technical Memoranda

File

10187-progress-ocean-wave-forecasting-ecmwf.pdf

The inclusion of aerosols and clouds in RTIASI, the ECMWF fast radiative transfer model for the infrared atmospheric sounding interferometer.

Author

Marco Matricardi

2005, Technical memorandum, ECMWF Technical Memoranda

File

11020-inclusion-aerosols-and-clouds-rtiasi-ecmwf-fast-radiative-transfer-model-infrared-atmospheric.pdf

Incremental 4D-Var convergence study

Author

Y. Trémolet

2005, Technical memorandum, ECMWF Technical Memoranda

File

12821-incremental-4d-var-convergence-study.pdf

Search ECMWF publications

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Evaluating the impact of prognostic ozone in IFS NWP forecasts

Tropical cyclone activities at ECMWF

Evaluation of ECMWF forecasts, including the 2021 upgrade

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

Low frequency variability and trends in surface air temperature and humidity from ERA5 and other datasets

On the consequences of nonlinearity and gravity-capillary waves on wind-wave interaction

Experimenting with a Clear Air Turbulence (CAT) Index from the IFS

Stratospheric modelling and assimilation

Machine learning at ECMWF: A roadmap for the next 10 years

Evaluation of ECMWF forecasts, including the 2020 upgrade

Vertical wind shear and convective storms

Floods, droughts, fire and beyond ... are existing forecasts enough?

Report on the seventeenth meeting of Computing Representatives, 19-20 May 2005.

A comparison of adaptive observing guidance for Atlantic tropical cyclones.

Ice supersaturation in the ECMWF Integrated Forecast System.

Report on the thirteenth Security Representatives' Meeting, 17-18 May 2005. (Restricted distribution)

Accounting for an imperfect model in 4D-Var. [Comment: revised October 2006]

A multivariate treatment of bias for sequential data assimilation: application to the tropical oceans.

Impact of increasing greenhouse gas concentrations in seasonal ensemble forecasts.

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

Progress in ocean wave forecasting at ECMWF.

The inclusion of aerosols and clouds in RTIASI, the ECMWF fast radiative transfer model for the infrared atmospheric sounding interferometer.

Incremental 4D-Var convergence study

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