ECMWF Newsletter - Chronological list of articles

ECMWF Newsletter 129 - Autumn 2011

• Increasing trust in medium-range weather forecasts
• An improved representation of cloud and precipitation
• Representing model uncertainty: stochastic parametrizations at ECMWF
• Use of ECMWF's ensemble vertical profiles at the Hungarian Meteorological Service
• Managing work flows with ecFlow

ECMWF Newsletter 128 - Summer 2011

• Developments in precipitation verification
• Observation errors and their correlations for satellite radiances
• Development of cloud condensate background errors

ECMWF Newsletter 127 - Spring 2011

• New clustering products
• Extended Kalman Filter soil moisture analysis in the IFS
• Evolution of land-surface processes in the IFS
• Use of SMOS data at ECWMF
• Support for OGC standards in Metview 4

ECMWF Newsletter 126 - Winter 2010/11

• Forecast performance 2010
• Simulation of the Madden-Julian Oscillation and its impact over Europe in ECMWF's monthly forecasts
• Use of the ECMWF EPS for ALADIN-LAEF
• Metview 4 - ECMWF's latest generation meteorological workstation
• Green computing

ECMWF Newsletter 125 - Autumn 2010

• Extreme weather events in summer 2010: how did the ECMWF forecasting systems perform?
• Weak constraint 4D-Var
• Non-hydrostatic modelling at ECMWF
• Prediction of extratropical cyclones by the TIGGE ensemble prediciton systems
• Metview Macro - a powerful meteorological batch language

ECMWF Newsletter 124 - Summer 2010

• Increased resolution in the ECMWF deterministic and ensemble prediction systems
• On the relative benefits of TIGGE multi-model forecasts and reforecast-calibrated EPS forecasts
• Surface pressure information derived from GPS radio occultation measurements
• Quantifying the benefit of the advanced infrared sounders AIRS and IASI
• The Data Handling System

ECMWF Newsletter 123 - Spring 2010

• Monitoring Atmospheric Composition and Climate
• Collaboration on Observing System Simulation Experiments (Joint OSSE)
• The new Ensemble of Data Assimilations
• Combined use of EDA- and SV-based perturbations in the EPS
• Update on the RMDCN

ECMWF Newsletter 122 - Winter 2009/10

• Performance of ECMWF forecasts in 2008/09
• Assessment of FY-3A satellite data
• Model uncertainty in seasonal to decadal forecasting - insight from the ENSEMBLES project
• Huber norm quality control in the IFS
• Magics++ 2.8 - new developments in ECMWF's meteorological graphics library

ECMWF Newsletter 121 - Autumn 2009

• The new all-sky assimilation system for passive microwave satellite imager observations
• Tracking fronts and extra-tropical cyclones
• Progress in the implementation of Hydrological Ensemble Prediction Systems (HEPS) in Europe for operational flood forecasting
• An experiment with a 46-day Ensemble Prediciton System
• Evaluation of AMVs derived from ECMWF model simulations

ECMWF Newsletter 120 - Summer 2009

• EPS-EFAS probabilistic flood prediction for Norther Italy: the case of 30 April 2009
• NEMOVAR: a variational data assimilation system for the NEMO ocean model
• Improvements in the stratosphere and mesosphere of the IFS
• The direct assimilation of cloud-affected infrared radiances in the ECMWF 4D-Var

ECMWF Newsletter 119 - Spring 2009

• Solar biases in the TRMM microwave imager (TMI)
• Variational bias correctionin ERA-Interim
• Parametrization of convective gusts
• Smoke in the air
• Use of ECMWF lateral boundary layer conditions and surface assimilation for the operational ALADIN model in Hungary

ECMWF Newsletter 118 - Winter 2008-09

• EUROSIP: multi-model seasonal forecasting
• Using ECMWF products in global marine drift forecasting services
• Record-setting performance of the ECMWF IFS in medium-range tropical cyclone track prediction

ECMWF Newsletter 117 - Autumn 2008

• Using the ECMWF reforecast dataset to calibrate EPS forecasts
• Towards the assimilaiton of ground-based radar precipitation data in the ECMWF 4D-Var
• The ECMWF 'Diagnostics Explorer': A web tool to aid forecast system assessment and development
• The EU-funded BRIDGE project

ECMWF Newsletter 116 - Summer 2008

• The THORPEX Interactive Grand Global Ensemble (TIGGE): concept and objectives
• Implementation of TIGGE Phase I
• Predictability studies using TIGGE data
• GEMS aerosol analyses with the ECMWF Integrated Forecast System
• Diagnosing forecast error using relaxation experiments
• Progress in ozone monitoring and assimilation
• Improving the radiative transfer modelling for the assimilation of radiances from SSU and AMSU-A stratospheric channels

ECMWF Newsletter 115 - Spring 2008

• ECMWF's 4D-Var data assimilation system - the genesis and ten years in operations
• Towards a climate data assimilation system: status update of ERA-Interim
• ECMWF contribution to AMMA
• Coupled ocean-atmopshere medium-range forecasts - the MERSEA experience
• Merging VarEPS with the monthly forecasting system: a first step towards seamless prediction

ECMWF Newsletter 114 - Winter 2007/08

• Toward a forecast of aerosols with the ECMWF Integrated Forecast System
• A new partitioning approach for ECMWF’s Integrated Forecast System
• Probability forecasts for water levels in The Netherlands
• Advances in simulating atmospheric variability with IFS cycle 32r3

ECMWF Newsletter 113 - Autumn 2007

• Operational assimilation of surface wind data from the MetOp ASCAT scatterometer at ECMWF
• Climate variability from the new System 3 ocean reanalysis
• Evaluation of the impact of the space component of the Global Observing System through Observing System Experiments
• Impact of airborne Doppler lidar observations on ECWMF forecasts
• New Automated Tape Library for the Disaster Recovery System

ECMWF Newsletter 112 - Summer 2007

• Data assimilation in the polar regions
• Seasonal forecasting of tropical storm frequency
• A new radiation package: McRad

ECMWF Newsletter 111 - Spring 2007

• Operational assimilation of GPS radio occultation measurements at ECMWF
• The value of targeted observations
• Ensemble streamflow forecasts over France
• New web products for the ECMWF Seasonal Forecast System-3

ECMWF Newsletter 110 - Winter 2006/07

• Assimilation of cloud and rain observations from space
• Seasonal Forecast System 3
• ERA-Interim: New ECMWF reanalysis products from 1989 onwards
• The next generation of ECMWF's meteorological graphics library - Magics++

ECMWF Newsletter 109 - Autumn 2006

• Analysis and forecast impact of humidity observations
• Hindcasts of historic storms with the DWD models GME, LMQ and LMK using ERA-40 reanalyses
• Hurricane Jim over New Caledonia: a remarkable numerical prediction of its genesis and track
• Ice supersaturation in ECMWF’s Integrated Forecast System
• New features of the Phase 4 HPC facility

ECMWF Newsletter 108 - Summer 2006

• Towards a global meso-scale model: The high-resolution system T799L91 and T399L62 EPS
• The ECMWF Variable Resolution Ensemble Prediction System (VAREPS)
• Surface pressure bias correction in data assimilation

ECMWF Newsletter 107 - Spring 2006

• Progress with the GEMS project
• Recent developments in extreme weather forecasting
• A variational approach to satellite bias correction
• Limited area ensemble forecasting in Norway using targeted EPS

ECMWF Newsletter 106 - Winter 2005/06

• Ensemble prediction: a pedagogical perspective
• Comparing and combining deterministic and ensemble forecasts: how to predict rainfall occurance better
• "Wavelet" Jb - a new way to model the statistics of background errors
• Progress in ocean wave forecasting at ECMWF

ECMWF Newsletter 105 - Autumn 2005

• Severe weather catalogue for the Netherlands and use of ERA-40
• New observations in the ECMWF assimilation system: satellite limb measurements
• The local and global impact of the recent change in model aerosol climatology
• Ocean analysis at ECMWF: from real-time ocean initial conditions to historical ocean reanalysis

• A preliminary survey of ERA-40 users developing applicaitons of relevance to GEO (Group on Earth Observations)
• EPS skill improvements between 1994 and 2005
• CO2 from space: estimating atmospheric CO2 within the ECMWF data assimilation system
• Improved prediction of boundary layer clouds
• Developing and validating GRID Technology for the solution of complex meteorological problems

• Sea ice analyses for the Baltic Sea
• The ADM-Aeolus satellite to measure wind profiles from space
• Ensembles-based predictions of climate changes and their impacts (ENSEMBLES Project)
• The GEMS project - making a contribution to the environmental monitoring mission of ECMWF
• An atlas describing the ERA-40 climate during 1979-2001
• MERSEA - a project to develop ocean and marine applications
• Migration of ECFS dat from TSM to HPSS ("Back-archive")

• Starting up medium-range forecasting for New Caledonia in the South-West Pacific Ocean - a not so boring tropical climate
• Early medium-range forecasts of tropical cyclones
• A snowstorm in north-western Turkey 12-13 February 2004 - Forecasts, public warnings and lessons learned
• Planning of adaptive observations during the Atlantic THORPEX Regional Campaign 2003
• Two new cycles of the IFS 26r3 and 28r1
• 25 years since the first operational forecast

• ERA-40: ECMWF 45-year reanalysis of the global atmosphere and surface conditions 1957-2002
• Early-delivery suite
• European Flood Alert System
• A simple false-colour scheme for the representation of multi-level clouds
• Retirement of David Burridge

• The 100th issue of the ECMWF Newsletter
• Monthly forecasting
• Systematic errors in the ECMWF forecasting system
• Towards freak-wave prediction over the global oceans