Technical Memoranda

214
Anton Beljaars; P. Viterbo; M.J. Miller; A. Betts
The anomalous rainfall over the USA during July 1993. Sensitivity to land surfaceparameterization and soil moisture anomalies
03/1995
8045-anomalous-rainfall-over-usa-during-july-1993-sensitivity-land-surfaceparameterization-and-soil.pdf
213
C. Temperton
Treatment of the Coriolis terms in semi-Lagrangian spectral models
03/1995
12609-treatment-coriolis-terms-semi-lagrangian-spectral-models.pdf
212
Anton Beljaars; P. Viterbo
The sensitivity of winter evaporation to the formulation of aerodynamic resistance in theECMWF model
02/1995
8041-sensitivity-winter-evaporation-formulation-aerodynamic-resistance-theecmwf-model.pdf
211
A. Hollingsworth
A spurious mode in the 'Lorenz' arrangement of Y and T which does not exist in the 'Charney-Phillips' arrangement
02/1995
9943-spurious-mode-lorenz-arrangement-y-and-t-which-does-not-exist-charney-phillips-arrangement.pdf
210
H Järvinen; Jean-Noël Thépaut; P. Courtier
Quasi-continuous variational data assimilation
01/1995
10351-quasi-continuous-variational-data-assimilation.pdf
208
Roberto Buizza; T.N. Palmer
The singular-vector structure of the atmospheric general circulation
01/1995
8460-singular-vector-structure-atmospheric-general-circulation.pdf
209
A. Lea
Report on the eighth meeting of Member State Computing Representatives, 27-28 September 1994
10/1994
10685-report-eighth-meeting-member-state-computing-representatives-27-28-september-1994.pdf
207
Carla Cardinali; Erik Andersson; P. Viterbo; Jean-Noël Thépaut; Drasko Vasiljevic
Use of conventional surface observations in three-dimensional variational assimilation
11/1994
8577-use-conventional-surface-observations-three-dimensional-variational-assimilation.pdf
206
T-E. Nordeng
Extended versions of the convective parametrization scheme at ECMWF and their impact on the mean and transient activity of the model in the tropics
09/1994
11393-extended-versions-convective-parametrization-scheme-ecmwf-and-their-impact-mean-and-transient.pdf
205
Roberto Buizza
Linearity of optimal perturbation time evolution and sensitivity of ensemble forecasts toperturbation amplitude
09/1994
8414-linearity-optimal-perturbation-time-evolution-and-sensitivity-ensemble-forecasts-toperturbation.pdf
204
M. Hortal
Recent studies of semi-Lagrangian advection at ECMWF
09/1994
10016-recent-studies-semi-lagrangian-advection-ecmwf.pdf
203
Florence Rabier; E. Klinker; P. Courtier; A. Hollingsworth
Sensitivity of two-day forecast errors over the Northern Hemisphere to initial conditions
09/1994
11795-sensitivity-two-day-forecast-errors-over-northern-hemisphere-initial-conditions.pdf
202
Franco Molteni; Roberto Buizza; T.N. Palmer; T. Petroliagis
The ECMWF Ensemble Prediction System - methodology and validation
09/1994
11189-ecmwf-ensemble-prediction-system-methodology-and-validation.pdf
201
Adrian Simmons; R. Mureau; T. Petroliagis
Error growth and predictability estimates for the ECMWF forecasting system
09/1994
12280-error-growth-and-predictability-estimates-ecmwf-forecasting-system.pdf
200
P. Nurmi
Recommendations on the verification of local weather forecasts
05/1994
11400-recommendations-verification-local-weather-forecasts.pdf
199
J. Eyre
Assimilation of radio occultation measurements into a Numerical Weather Predictionsystem
05/1994
9331-assimilation-radio-occultation-measurements-numerical-weather-predictionsystem.pdf
198
A. Guillaume
Accuracy of the ERS-1 altimeter-derived Fast Delivery Products for wave dataassimilation
02/1994
9678-accuracy-ers-1-altimeter-derived-fast-delivery-products-wave-dataassimilation.pdf
197
Florence Rabier; P. Courtier; M. Herveou; B. Strauss; A Persson
Sensitivity of forecast error to initial conditions using the adjoint method
10/1993
11789-sensitivity-forecast-error-initial-conditions-using-adjoint-method.pdf
196
Roberto Buizza
Computation of optimal perturbations using a local projection operator: A winter casestudy
10/1993
8413-computation-optimal-perturbations-using-local-projection-operator-winter-casestudy.pdf
195
Florence Rabier; A. McNally
Evaluation of forecast error covariance matrix
09/1993
11801-evaluation-forecast-error-covariance-matrix.pdf
194
P. Courtier; Erik Andersson; W.A. Heckley; G.A. Kelly; J. Pailleux; Florence Rabier; Jean-Noël Thépaut; P. Undén; Drasko Vasiljevic; Carla Cardinali; J. Eyre; M. Hamrud; J. Haseler; A. Hollingsworth; A. McNally; A. Stoffelen
Variational assimilation at ECMWF
09/1993
8786-variational-assimilation-ecmwf.pdf
193
N.G. Kvamstø
Synoptic cloudiness validation in the ECMWF model
08/1993
10579-synoptic-cloudiness-validation-ecmwf-model.pdf
192
Roberto Buizza
Impact of a simple vertical diffusion scheme and of the optimisation time interval onoptimal unstable structures
02/1993
8412-impact-simple-vertical-diffusion-scheme-and-optimisation-time-interval-onoptimal-unstable.pdf
191
A. Lea
Report on the seventh meeting of Member State Computing Representatives, 28-30 September 1992
10/1992
10684-report-seventh-meeting-member-state-computing-representatives-28-30-september-1992.pdf