Europe’s New Weather Eye: Meteosat MTG-I2 to Launch Aboard an Ariane 6

Launch and mission

MTG-I2 is scheduled to launch on 27 August from the European spaceport in French Guiana aboard an Ariane 6 rocket (flight VA270). The satellite is part of the Meteosat Third Generation fleet and completes its first deployment phase. The launch will be broadcast live on the European Space Agency’s web platform.

What MTG-I2 provides

MTG-I2 is an imager operating in geostationary orbit. It continuously observes clouds and the radiative properties of the atmosphere. Compared with earlier Meteosat generations, its data are updated more frequently, have finer spatial resolution and include additional measured quantities. This improves forecasts and the early detection of severe weather.

Short-term forecasts

For nowcasting — very short-term forecasts on the scale of hours — more frequent observations are crucial. They make it possible to track the development of convective cells such as thunderstorms more precisely. In rapidly developing heavy rain events or squall lines, this supports local warnings and the deployment of rescue and infrastructure services. Continuous monitoring also aids analysis of cloud formation and structure, and of aerosol dispersion that can affect visibility and air quality.

Lightning detection

Newer Meteosat satellites detect lightning optically in near real time. Patterns of electrical activity provide information on the intensity and maturity of storms and complement radar and ground measurements. In combination with convective models, lightning data improve early detection of dangerous developments and the understanding of extreme events.

Contribution to climate observation

Beyond the current weather situation, MTG data create long-term measurement series. Standardized radiometry and frequent revisits allow robust trend analyses of cloud cover and atmospheric moisture, as well as studies of urban heat island spread. Such datasets support climate research and adaptation strategies.

Synergies in the observation system

The greatest value of the data comes from combining them with ground radars, weather stations, aircraft and radiosonde measurements, and polar-orbiting satellites. While polar platforms provide very high detail along their tracks, geostationary imagers like MTG-I2 deliver continuous coverage of large regions. In assimilation systems used by weather services, the new data increase the quality of numerical forecast models.

Ariane 6 as launcher

Launching aboard Ariane 6 marks another step in the operational use of Europe’s launch capabilities for Earth observation missions and strengthens Europe's independent access to orbit.

Applications

Direct users include meteorological services, air traffic control, energy providers, agriculture and disaster management. More precise satellite data support warnings for heavy rain, storms or ice cover, improve assessments of soil moisture and radiation conditions, and accelerate situational awareness in affected areas.

Outlook

With MTG-I2, the ability to monitor weather and climate processes over Europe and North Africa in higher temporal and spatial resolution grows. This strengthens operational forecasting and the scientific understanding of a changing atmosphere.