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Experimental 2D-Var assimilation of ARM cloud and precipitation observations.

Author

Philippe Lopez

Angela Benedetti

Peter Bauer

Marta Janiskova

M. Köhler

2005, Technical memorandum, ECMWF Technical Memoranda

File

10800-experimental-2d-var-assimilation-arm-cloud-and-precipitation-observations.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

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

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

Influence of aerosol climatology on forecasts of the African Easterly Jet.

Author

A.M. Tompkins

Carla Cardinali

J.-J. Morcrette

Mark Rodwell

2005, Technical memorandum, ECMWF Technical Memoranda

File

12786-influence-aerosol-climatology-forecasts-african-easterly-jet.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

Impact of ocean observation systems on ocean analysis and seasonal forecasts.

Author

A. Vidard

D.L.T. Anderson

Magdalena Alonso-Balmaseda

2005, Technical memorandum, ECMWF Technical Memoranda

File

12921-impact-ocean-observation-systems-ocean-analysis-and-seasonal-forecasts.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

A fast radiative transfer model for limb radiances: Accounting for horizontal gradients.

Author

Niels Bormann

Sean Healy

2005, Technical memorandum, ECMWF Technical Memoranda

File

8295-fast-radiative-transfer-model-limb-radiances-accounting-horizontal-gradients.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

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

Diagnostics of linear and incremental approximations in 4D-Var revisited for higher resolution analysis

Author

G. Radnóti

Y. Trémolet

Erik Andersson

L. Isaksen

E. Hólm

Marta Janiskova

2005, Technical memorandum, ECMWF Technical Memoranda

File

11816-diagnostics-linear-and-incremental-approximations-4d-var-revisited-higher-resolution-analysis.pdf

Incremental 4D-Var convergence study

Author

Y. Trémolet

2005, Technical memorandum, ECMWF Technical Memoranda

File

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

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

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

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

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

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

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

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

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

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