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1989, Conference Paper, ECMWF/EUMETSAT Workshop on The Use of Satellite Data in Operational Numerical Weather Prediction: 1989-1993, 9-12 May 1989, ECMWF/EUMETSAT Workshop

File

7756-observing-system-experiments-nesdis-statistical-retrievals-tovs-satellite-data-using-1988-ecmwf.pdf

Variational quality control

Author

Erik Andersson

H Järvinen

1998, Technical memorandum, ECMWF Technical Memoranda

File

7759-variational-quality-control.pdf

Background errors for observed quantities and their propagation in time

Author

Erik Andersson

Mike Fisher

1999, Conference Paper, Workshop on Diagnosis of Data Assimilation Systems, 2 - 4 November 1998

File

7761-background-errors-observed-quantities-and-their-propagation-time.pdf

Use of radiances in 3D/4D variational data assimilation

Author

Erik Andersson

J. Pailleux

Jean-Noël Thépaut

J. Eyre

A. McNally

G.A. Kelly

P. Courtier

1992, Conference Paper, Workshop on Variational Assimilation, with special emphasis on Three-dimensional Aspects, 9-12 November 1992

File

7762-use-radiances-3d4d-variational-data-assimilation.pdf

Use of radiances in 3D/4D variational data assimilation

Author

Erik Andersson

J. Pailleux

Jean-Noël Thépaut

J. Eyre

A. McNally

G.A. Kelly

P. Courtier

1993, Book Chapter, Technical Proceedings 7th International TOVS Study Conference; Igls, Austria; 10-16 February 1993, Ed J. R. Eyre

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

Data assimilation in the polar regions.

Author

Erik Andersson

2007, Conference Paper, Seminar on Polar meteorology, 4-8 September 2006

File

7771-data-assimilation-polar-regions.pdf

HIRLAM: Recent activities and future plans in high resolution and numerics

Author

U. Andrae

2000, Conference Paper, Workshop on Developments in Numerical Methods for Very High resolution global models, 5-7 June 2000

File

7772-hirlam-recent-activities-and-future-plans-high-resolution-and-numerics.pdf

The radiosonde temperature bias corrections used in ERA-40

Author

U. Andrae

N. Sokka

K. Onogi

2004, Report, ERA-40 Project Report Series, ERA Report

File

7773-radiosonde-temperature-bias-corrections-used-era-40.pdf

A survey of major land-surface experiments and a review of their main findings

Author

J-C. Andre

1994, Conference Paper, Seminar on Parametrization of Sub-grid Scale Physical Processes, 5-9 September 1994

File

7774-survey-major-land-surface-experiments-and-review-their-main-findings.pdf

A third-order-closure model for the evolution of a convective planetary boundary layer

Author

J-C. Andre

1976, Conference Paper, Seminar on the Treatment of the Boundary Layer in Numerical Weather Prediction, 6-10 September 1976

File

7775-third-order-closure-model-evolution-convective-planetary-boundary-layer.pdf

Multi-level boundary layer schemes

Author

J.-C. Andre

1985, Conference Paper, Seminar on Physical Parameterization for Numerical Models of the Atmosphere, 9-13 September 1985

File

7776-multi-level-boundary-layer-schemes.pdf

Validation of boundary layer schemes

Author

J.-C. Andre

1985, Conference Paper, Seminar on Physical Parameterization for Numerical Models of the Atmosphere, 9-13 September 1985

File

7777-validation-boundary-layer-schemes.pdf

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On the impact of frequent data in ECMWF's 4D-Var scheme. Hourly surface pressure data, European profilers and profiling aircraft data

Monitoring and quality control of the operational observing system

Diagnosis of background errors for radiances and other observable quantities in a variational data assimilation scheme, and the explanation of a case of poor convergence

Assessment of European wind profiler data, in an NWP context

The ECMWF implementation of three dimensional variational assimilation (3D-Var): Eexperimental results

The ECMWF implementation of three dimensional variational assimilation (3D-Var): Eexperimental results

The ECMWF implementation of three dimensional variational assimilation. Part III: Experimental results

Typhoon bogus observations in the ECMWF data assimilation system

Observing system experiments on NESDIS statistical retrievals of TOVS data using the 1988 ECMWF data assimilation system

Observing system experiments on NESDIS statistical retrievals of TOVS satellite data using the 1988 ECMWF data assimilation system

Variational quality control

Background errors for observed quantities and their propagation in time

Use of radiances in 3D/4D variational data assimilation

Use of radiances in 3D/4D variational data assimilation

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?

Data assimilation in the polar regions.

HIRLAM: Recent activities and future plans in high resolution and numerics

The radiosonde temperature bias corrections used in ERA-40

A survey of major land-surface experiments and a review of their main findings

A third-order-closure model for the evolution of a convective planetary boundary layer

Multi-level boundary layer schemes

Validation of boundary layer schemes

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