Technical Memoranda

625
A. Orr; Peter Bechtold; J. Scinocca; M. Ern; Marta Janiskova
Improved middle atmosphere climate and forecasts in the ECMWF model through a non-orographic gravity wave drag parametrization
04/2010
11450-improved-middle-atmosphere-climate-and-forecasts-ecmwf-model-through-non-orographic-gravity.pdf
624
J.M. Sabater; Patricia de Rosnay; Gianpaolo Balsamo
Sensitivity of L-Band NWP forward modelling to soil roughness
04/2010
13284-sensitivity-l-band-nwp-forward-modelling-soil-roughness.pdf
623
T. Jung; Peter Bechtold; Anton Beljaars; M. Köhler; M.J. Miller; J.-J. Morcrette; A. Orr; Mark Rodwell; A.M. Tompkins
The ECMWF model climate: Recent progress through improved physical parametrizations
04/2010
10317-ecmwf-model-climate-recent-progress-through-improved-physical-parametrizations.pdf
622
Y Takaya; Frédéric Vitart; Gianpaolo Balsamo; Magdalena Alonso-Balmaseda; Martin Leutbecher; Franco Molteni
Implementation of an ocean mixed layer model in IFS
03/2010
12540-implementation-ocean-mixed-layer-model-ifs.pdf
621
F. Doblas-Reyes; Antje Weisheimer; T.N. Palmer; J. Murphy; D.M. Smith
Forecast quality assessment of the ENSEMBLES seasonal-to-decadal Stream 2 hindcasts
04/2010
9071-forecast-quality-assessment-ensembles-seasonal-decadal-stream-2-hindcasts.pdf
620
Alan Geer; Peter Bauer
Enhanced use of all-sky microwave observations sensitive to water vapour, cloud and precipitation
04/2010
9518-enhanced-use-all-sky-microwave-observations-sensitive-water-vapour-cloud-and-precipitation.pdf
619
Alan Geer; Peter Bauer; Philippe Lopez
Direct 4D-Var assimilation of all-sky radiances. Part II: Assessment
04/2010
9512-direct-4d-var-assimilation-all-sky-radiances-part-ii-assessment.pdf
618
Peter Bauer; Alan Geer; Philippe Lopez; Deborah Salmond
Direct 4D-Var assimilation of all-sky radiances. Part I: Implementation
04/2010
7987-direct-4d-var-assimilation-all-sky-radiances-part-i-implementation.pdf
617
Marco Matricardi
A principal component based version of the RTTOV fast radiative transfer model.
04/2010
11026-principal-component-based-version-rttov-fast-radiative-transfer-model.pdf
616
M. Hamrud
Report from the IFS scalability project
02/2010
9767-report-ifs-scalability-project.pdf
615
Mark Rodwell; David Richardson; Tim Hewson
A new equitable score suitable for verifying precipitation in NWP
02/2010
11988-new-equitable-score-suitable-verifying-precipitation-nwp.pdf
614
Roberto Buizza
Impact of truncation on variable resolution forecasts
01/2010
8431-impact-truncation-variable-resolution-forecasts.pdf
613
Johannes Flemming; Antje Inness; Luke Jones; H. Eskes; V. Huijnen; D. Kinnison; M.G. Schultz; O. Stein; D. Cariolle; G.P. Brasseur
Forecasts and assimilation experiments of the Antarctic Ozone Hole 2008
01/2010
9428-forecasts-and-assimilation-experiments-antarctic-ozone-hole-2008.pdf
612
Anna Agusti-Panareda; Anton Beljaars; Maike Ahlgrimm; Gianpaolo Balsamo; O. Bock; Richard Forbes; A Ghelli; F. Guichard; M. Köhler; R. Meynadier; J.-J. Morcrette
The ECMWF re-analysis for the AMMA observational campaign
12/2009
7649-ecmwf-re-analysis-amma-observational-campaign.pdf
611
Anna Agusti-Panareda; Gianpaolo Balsamo; Anton Beljaars
Impact of improved soil moisture on the ECMWF precipitation forecasts in West Africa
12/2009
7648-impact-improved-soil-moisture-ecmwf-precipitation-forecasts-west-africa.pdf
610
Saleh Abdalla; Peter Janssen; Jean-Raymond Bidlot
Jason-2 OGDR wind and wave products: Monitoring, validation and assimilation
12/2009
7629-jason-2-ogdr-wind-and-wave-products-monitoring-validation-and-assimilation.pdf
609
Gianpaolo Balsamo; Emanuel Dutra; V.M. Stepanenko; P. Viterbo; P.M. Miranda; D. Mironov
Deriving an effective lake depth from satellite lake surface temperature data: A feasibility study with MODIS data
12/2009
7923-deriving-effective-lake-depth-satellite-lake-surface-temperature-data-feasibility-study-modis.pdf
608
Emanuel Dutra; V.M. Stepanenko; Gianpaolo Balsamo; P. Viterbo; P.M. Miranda; D. Mironov; C. Schär
Impact of lakes on the ECMWF surface scheme
12/2009
9173-impact-lakes-ecmwf-surface-scheme.pdf
607
Emanuel Dutra; Gianpaolo Balsamo; P. Viterbo; P.M.A. Miranda; Anton Beljaars; C. Schär; K. Elder
New snow scheme in HTESSEL: description and offline validation
12/2009
9167-new-snow-scheme-htessel-description-and-offline-validation.pdf
606
David Richardson; Jean-Raymond Bidlot; Laura Ferranti; A Ghelli; C. Gibert; Tim Hewson; Janousek Prates; Frédéric Vitart
Verification statistics and evaluations of ECMWF forecasts in 2008-2009.
10/2009
11918-verification-statistics-and-evaluations-ecmwf-forecasts-2008-2009.pdf
605
Roberto Buizza
The value of a variable resolution approach to numerical weather prediction
10/2009
8430-value-variable-resolution-approach-numerical-weather-prediction.pdf
604
T. Jung; T.N. Palmer; Mark Rodwell; S. Serrar
Understanding the anomalously cold European winter of 2005/06 using relaxation experiments
10/2009
10312-understanding-anomalously-cold-european-winter-200506-using-relaxation-experiments.pdf
603
T. Jung; M.J. Miller; T.N. Palmer
Diagnosing the origin of extended-range forecast error
10/2009
10339-diagnosing-origin-extended-range-forecast-error.pdf
602
Nils Wedi; Piotr Smolarkiewicz
A nonlinear perspective on the dynamics of the MJO: idealized large-eddy simulations
10/2009
13019-nonlinear-perspective-dynamics-mjo-idealized-large-eddy-simulations.pdf