ECMWF Newsletter - Chronological list of articles

ECMWF Newsletter 134 - Winter 2012/13

• Forecast performance 2012
• Teaching with OpenIFS at Stockholm University: leading the learning experience
• 20 years of ensemble prediction at ECMWF
• Uncertainty in tropical winds
• RMDCN - next generation

ECMWF Newsletter 133 - Autumn 2012

• Global, non-hydrostatic, convection-permitting, medium-range forecasts: progress and challenges
• ECMWF soil moisture validaiton activities
• Forecast sensitivity to observation error variance

ECMWF Newsletter 132 - Summer 2012

• Early indication of extreme winds utilising the Extreme Forecast Index
• Towards an operational GMES Atmospher Monitoring Service
• Blending information from infrared radiances with ultraviolet data in the operational ozone analysis
• BUFR data and Metview

ECMWF Newsletter 131 - Spring 2012

• Monitoring and forecasting the 2010/11 drought in the Horn of Africa
• Characteristics of occasional poor medium-range forecasts for Europe
• A case study of occasional poor medium-range forecasts for Europe
• The European Flood Awareness System (EFAS) at ECMWF: towards operational implementation
• A new trajectory interface in Metview 4

ECMWF Newsletter 130 - Winter 2011-12

• Forecast performance 2011
• New tropical cyclone products on the web
• Use of EDA-based background error variance in 4D-Var
• A new framework to handle ODB in Metview 4

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