In focus

Still from reconstruction of Ulysses storm over the UK in February 1903; credit: Philip Brohan

The role of ECMWF and the C3S in historical data rescue

The Copernicus Climate Change Service (C3S) activity to coordinate data rescue is an exciting and major step forward in improving the historical datasets that are so vital for assessing and managing the risks from climate change.

Ocean with clouds and sun

Improving ocean observations for better weather forecasts

A WMO workshop in February 2019, in which ECMWF participated, examined the requirements for ocean observations, which make a critical contribution to weather forecasts and warning systems.
ECMWF at AMS 2019 graphic

ECMWF at the 2019 AMS Annual Meeting

ECMWF will be at the American Meteorological Society (AMS) Annual Meeting in Phoenix, Arizona from 6 to 10 January. Find out when our staff are presenting and when they will be available at our booth.
Global grid

ECMWF and the Group on Earth Observations (GEO)

ECMWF is one of 127 participating organisations which, together with 105 member nations and the European Union, form the Group on Earth Observations (GEO). Here we look at GEO’s important work and how ECMWF both benefits and contributes.
Corn harvest destroyed by drought

ECMWF extended-range forecasts and the European heatwave of summer 2018

The heatwave of summer 2018 highlighted the skill and value of our extended-range (sub-seasonal) forecasts. Forming part of ECMWF's seamless prediction system, the extended range falls between the medium- and long-range (seasonal) timescales. Forecasts on the extended-range timescale are scientifically challenging, but skill has been increasing steadily.

ECMWF Newsletter cover image montage

ECMWF Newsletter back issues available online

Back issues of the ECMWF Newsletter previously only published in paper form are now available in our eLibrary, along with all Newsletter feature articles published since spring 2005.
Forecast User Guide

User guide to ECMWF forecast products

A new edition of ECMWF’s user guide is now available online. The ECMWF Forecast User Guide helps forecasters and other meteorologists to make the best use of the forecast products from ECMWF.
Rainfall percentiles derived from ecPoint-Rainfall

Collaboration with Ecuador related to extreme rainfall and flood risk

ECMWF and Ecuador’s national hydro-meteorological service, the Instituto Nacional de Meteorología e Hidrología (INAMHI), have signed a collaborative agreement for data exchange and verification of new post-processed rainfall products (“ecPoint-Rainfall”), with one long-term goal being flood impact mitigation.
ECMWF high-performance computing facility

Taking ECMWF computing capability forward

Since its creation, the Centre has owed its leading position to a combination of collaborative principles, top-level scientists and powerful HPC capacities. The opportunity has now arisen for a new Director of Computing to lead ECMWF’s computing efforts.
NOAA Gulfstream IV (G-4) aircraft

ECMWF supports atmospheric river reconnaissance flights

ECMWF is providing support for a field campaign over the eastern Pacific called ‘Atmospheric River Reconnaissance’. The campaign is led by Scripps Institution of Oceanography’s Center for Western Weather and Water Extremes and will run until late February 2018.
ECMWF Graduate Trainees from Croatia, Hungary and Serbia

Graduate Training Programme fosters strong links with Member States

ECMWF’s Graduate Training Programme is an important aspect of our strong scientific cooperation with Member and Co-operating States. Here, three current Graduate Trainees from the national meteorological services of Croatia, Hungary and Serbia talk about their experiences at ECMWF.
ESCAPE project logo

The ESCAPE project: towards exascale computing in NWP

Weather and climate 'dwarfs' designed and implemented in this ECMWF-led project are a major step towards re-structuring existing computational kernels for weather forecasting. They will serve as building blocks for exascale-ready solutions.
Traffic fumes

The ECMWF Copernicus Atmosphere Monitoring Service (CAMS) – applications and recent improvements

Managed by ECMWF on behalf of the EU, CAMS provides policy makers, businesses, scientists and the general public with reliable information about the composition of our atmosphere and how it is changing.
Flooded road in Peru

Sharing forecasts and knowledge in emergency situations

To mark the International Day for Disaster Reduction, we look at how ECMWF collaborates with the WMO to help reduce people’s exposure to weather-related disasters.
Carbon dioxide human emission project

Developing a European capacity to monitor worldwide CO2 emissions

ECMWF is leading a new initiative to explore the development of a European system to monitor human activity related carbon dioxide (CO2) emissions across the world.
28 Jul 2017 GloFAS river discharge forecast

South Asia floods put new GloFAS river discharge forecasts to the test

Severe flooding along the cross-border Asian rivers of the Ganges and Brahmaputra in July and August this year coincided with tests of new extended-range river discharge forecasts at ECMWF.
web-graphic

Fact sheet: Ensemble weather forecasting

An ensemble weather forecast is a set of forecasts that present the range of future weather possibilities. By generating a range of possible outcomes, the method can show how likely different scenarios are in the days ahead, and how long into the future the forecasts are useful.