The MetOp Second Generation (MetOp-SG) program represents a significant advancement in Europe's meteorological satellite capabilities. Developed collaboratively by the European Space Agency (ESA), EUMETSAT, and Airbus Defence and Space, this initiative aims to enhance global weather forecasting and climate monitoring through a series of advanced satellites.

Overview of the MetOp-SG Program

The MetOp-SG program is designed to ensure the continuity and improvement of meteorological data collection from polar orbit. It comprises three successive pairs of satellites, each consisting of an A-type and a B-type satellite, totaling six spacecraft. These satellites are equipped with a comprehensive suite of instruments to provide high-resolution measurements of atmospheric and environmental parameters. The mission's primary objectives include:

  • Enhancing the accuracy of weather forecasts.
  • Monitoring climate change and atmospheric composition.
  • Providing critical data for operational services related to atmospheric chemistry, oceanography, and hydrology.

Development and Contractual Agreements

In October 2014, Airbus Defence and Space was awarded the prime contract for the MetOp-SG program by ESA. This contract encompassed the design, development, and construction of the six satellites, marking a significant milestone in Europe's commitment to advancing meteorological satellite technology. The collaboration between ESA, EUMETSAT, and Airbus Defence and Space has been instrumental in bringing the MetOp-SG program to fruition.

Satellite Configuration and Instrumentation

The MetOp-SG satellites are divided into two types, each with specific instruments tailored to their mission objectives:

  • A-type Satellites:
    • Infrared Atmospheric Sounding Interferometer – New Generation (IASI-NG): Provides profiles of temperature, humidity, and various trace gases, significantly enhancing weather forecasting and climate research capabilities. Developed in partnership between Airbus and the French space agency CNES. ([airbus.com](
    • METimage: A multispectral imaging radiometer that delivers detailed information about clouds, aerosols, and Earth's surface temperatures across 20 channels, from visible to infrared wavelengths. This instrument contributes to improved weather and climate forecasts. ([airbus.com](
    • Microwave Sounder: Measures atmospheric temperature and humidity profiles, aiding in accurate weather predictions.
    • Radio Occultation Sounder: Provides data on atmospheric profiles by analyzing signals from GPS satellites as they pass through the Earth's atmosphere.
    • Multi-Viewing, Multi-Channel, Multi-Polarisation Imager (3MI): Designed to enhance the monitoring of aerosols and cloud properties, contributing to a better understanding of atmospheric composition. ([esa.int](
    • Copernicus Sentinel-5 Instrument: Part of the European Union's Copernicus program, this instrument measures atmospheric composition and trace gases, supporting climate research and monitoring air quality. ([esa.int](
  • B-type Satellites:
    • Scatterometer (SCA): Provides ocean-surface wind vectors and land-surface soil moisture data, essential for weather forecasting and climate studies.
    • Microwave Imager (MWI): Measures atmospheric temperature and humidity profiles, contributing to accurate weather predictions.
    • Ice-Cloud Imager (ICI): Monitors ice and cloud properties, aiding in the understanding of cloud formation and precipitation processes.
    • Argos-4 Data Collection System: Supports the collection of environmental data from various platforms, including buoys and ships, enhancing global climate monitoring efforts. ([esa.int](

Launch and Operational Timeline

The MetOp-SG mission is structured to provide continuous data for over two decades. Each satellite is designed for an in-orbit lifespan of 7.5 years, with new pairs launched approximately every seven years to ensure uninterrupted data collection. The launch schedule is as follows:

  • MetOp-SG-A1: Launched on 13 August 2025 aboard an Ariane 6 rocket from Europe's Spaceport in Kourou, French Guiana. This satellite marks the beginning of a new era in European weather forecasting. ([airbus.com](
  • MetOp-SG-B1: Scheduled for launch in 2026, this satellite will complement the A-type satellites by providing additional data on atmospheric and environmental parameters. ([esa.int](
  • MetOp-SG-A2 and A3: Planned for launch in 2032 and 2039, respectively, continuing the mission's objective of long-term data provision.
  • MetOp-SG-B2 and B3: Scheduled for launch in 2033 and 2040, respectively, ensuring the continuity of the mission's data collection capabilities. ([esa.int](

Impact on Weather Forecasting and Climate Monitoring

The MetOp-SG satellites are poised to significantly enhance the accuracy and reliability of weather forecasts and climate analyses. By providing high-resolution, global coverage of atmospheric and environmental parameters, these satellites will support a wide range of applications, including:

  • Improved Weather Forecasting: Enhanced data on temperature, humidity, wind patterns, and precipitation will lead to more accurate short-term and long-term weather predictions.
  • Climate Change Monitoring: Continuous observation of atmospheric composition, including greenhouse gases and aerosols, will aid in understanding and mitigating the effects of climate change.
  • Operational Services: Data from the MetOp-SG satellites will support services related to oceanography, hydrology, and atmospheric chemistry, benefiting sectors such as agriculture, transportation, and disaster management. ([esa.int](

In summary, the collaboration between ESA, EUMETSAT, and Airbus Defence and Space in the development and deployment of the MetOp-SG satellites underscores Europe's commitment to advancing meteorological satellite technology. The successful launch and operation of these satellites will provide critical data for weather forecasting and climate monitoring, benefiting societies worldwide.

Sources

  • European Space Agency — MetOp-SG facts and figures —