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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

Verification statistics and evaluations of ECMWF forecasts in 2003-2004.

Author

F. Lalaurette

Jean-Raymond Bidlot

Laura Ferranti

A Ghelli

F. Grazzini

Martin Leutbecher

J-E. Paulsen

P. Viterbo

2005, Technical memorandum, ECMWF Technical Memoranda

File

10633-verification-statistics-and-evaluations-ecmwf-forecasts-2003-2004.pdf

Validation of IFS+RTTOV/MFASIS0.64-μm reflectances against observations from GOES-16, GOES-17, MSG-4 and Himawari-8

Author

Philippe Lopez

Marco Matricardi

2022, Technical memorandum, ECMWF Technical Memoranda

File

20472-validation-ifsrttovmfasis064-mm-reflectances-against-observations-goes-16-goes-17-msg-4-and.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

Towards an integrated seasonal forecasting system for South America.

Author

C. Coelho

D. Stephenson

Magdalena Alonso-Balmaseda

F. Doblas-Reyes

G.J. van Oldenborgh

2005, Technical memorandum, ECMWF Technical Memoranda

File

8744-towards-integrated-seasonal-forecasting-system-south-america.pdf

The shallow water limit of the Zakharov Equation and consequences for (freak) wave prediction.

Author

Peter Janssen

M. Onorato

2005, Technical memorandum, ECMWF Technical Memoranda

File

10230-shallow-water-limit-zakharov-equation-and-consequences-freak-wave-prediction.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

The impact of moist singular vectors and horizontal resolution on short-range limited-area ensemble forecasts for two European winter storms.

Author

Andre Walser

M. Arpagus

Martin Leutbecher

C. Appenzeller

2005, Technical memorandum, ECMWF Technical Memoranda

File

12982-impact-moist-singular-vectors-and-horizontal-resolution-short-range-limited-area-ensemble.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

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

Some aspects of systematic error in the ECMWF model.

Author

T. Jung

A.M. Tompkins

Mark Rodwell

2005, Technical memorandum, ECMWF Technical Memoranda

File

10316-some-aspects-systematic-error-ecmwf-model.pdf

Sensitivity of the tropospheric circulation to changes in the strength of the stratospheric polar vortex.

Author

T. Jung

J. Barkmeijer

2005, Technical memorandum, ECMWF Technical Memoranda

File

10315-sensitivity-tropospheric-circulation-changes-strength-stratospheric-polar-vortex.pdf

Salinity assimilation using S(T) relationships: Part 1 - Theory.

Author

K. Haines

J. Blower

J-P. Drecourt

C. Liu

I. Astin

X. Zhou

A. Vidard

2005, Technical memorandum, ECMWF Technical Memoranda

File

9742-salinity-assimilation-using-st-relationships-part-1-theory.pdf

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

Author

P. Prior

2005, Technical memorandum, ECMWF Technical Memoranda

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

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

Preparing for the exploitation of MTG-S IRS in NWP using FY4-A GIIRS observations

Author

Chris Burrows

Pierre Dussarrat

2022, Technical memorandum, ECMWF Technical Memoranda

File

20396-preparing-exploitation-mtg-s-irs-nwp-using-fy4-giirs-obs.pdf

Passive microwave radiometer channel selection based on cloud and precipitation information content estimation.

Author

S. Di Michele

Peter Bauer

2005, Technical memorandum, ECMWF Technical Memoranda

File

9040-passive-microwave-radiometer-channel-selection-based-cloud-and-precipitation-information.pdf

Outcomes from UGROW-IO: Forecast errors in the Eastern Indian Ocean across lead times

Author

Michael Mayer

Magdalena Alonso-Balmaseda

Stephanie Johnson

Linus Magnusson

Christopher Roberts

Hao Zuo

2022, Technical memorandum, ECMWF Technical Memoranda

File

20401-outcomes-ugrow-io-forecast-errors-eastern-indian-ocean-across-lead-times.pdf

On ensemble prediction using singular vectors started from forecasts.

Author

Martin Leutbecher

2005, Technical memorandum, ECMWF Technical Memoranda

File

10732-ensemble-prediction-using-singular-vectors-started-forecasts.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

Medium-range weather forecasting in the extratropics during wintertime with and without an interactive ocean.

Author

T. Jung

Frédéric Vitart

2005, Technical memorandum, ECMWF Technical Memoranda

File

10319-medium-range-weather-forecasting-extratropics-during-wintertime-and-without-interactive-ocean.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

Influence of stochastic physics on the frequency of occurrence of North Pacific weather regimes in the ECMWF model.

Author

T. Jung

T.N. Palmer

G.J. Shutts

2005, Technical memorandum, ECMWF Technical Memoranda

File

10327-influence-stochastic-physics-frequency-occurrence-north-pacific-weather-regimes-ecmwf-model.pdf

Search ECMWF publications

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

Verification statistics and evaluations of ECMWF forecasts in 2003-2004.

Validation of IFS+RTTOV/MFASIS0.64-μm reflectances against observations from GOES-16, GOES-17, MSG-4 and Himawari-8

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

Towards an integrated seasonal forecasting system for South America.

The shallow water limit of the Zakharov Equation and consequences for (freak) wave prediction.

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

The impact of moist singular vectors and horizontal resolution on short-range limited-area ensemble forecasts for two European winter storms.

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

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

Some aspects of systematic error in the ECMWF model.

Sensitivity of the tropospheric circulation to changes in the strength of the stratospheric polar vortex.

Salinity assimilation using S(T) relationships: Part 1 - Theory.

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

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

Progress in ocean wave forecasting at ECMWF.

Preparing for the exploitation of MTG-S IRS in NWP using FY4-A GIIRS observations

Passive microwave radiometer channel selection based on cloud and precipitation information content estimation.

Outcomes from UGROW-IO: Forecast errors in the Eastern Indian Ocean across lead times

On ensemble prediction using singular vectors started from forecasts.

Notes on shallow water extension of Miles Theory

Medium-range weather forecasting in the extratropics during wintertime with and without an interactive ocean.

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

Influence of stochastic physics on the frequency of occurrence of North Pacific weather regimes in the ECMWF model.

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