MetOp-SG

MetOp-SG
Name	MetOp-SG
Manufacturer	Airbus Defence and Space; Thales Alenia Space
Operator	European Space Agency; EUMETSAT
Mission type	Meteorological satellite
Launch mass	~4,200 kg per satellite
Power	~2.8 kW
Status	Operational program

MetOp-SG MetOp-SG is a series of polar-orbiting meteorological satellites developed for operational weather and climate monitoring, serving continuity of the MetOp programme and supporting users such as Copernicus Programme stakeholders and the World Meteorological Organization. The programme is implemented by Airbus Defence and Space and Thales Alenia Space for ESA and EUMETSAT, providing joint European and international capabilities alongside platforms like NOAA-20 and Suomi NPP.

Overview

The programme was conceived to follow earlier polar platforms including ERS-1, ERS-2, Envisat, NOAA-19, and MetOp-A to deliver continuity for instruments such as those derived from IASI and AVHRR. Its design leverages heritage from spacecraft developed by Arianespace suppliers and integrates technologies demonstrated on missions like Sentinel-5P and Jason-3. Funding and governance involve agencies and institutions including European Commission, CNES, DLR, and national meteorological services such as Météo-France and UK Met Office.

Mission and Objectives

Primary objectives include obtaining atmospheric sounding, surface and sea-ice monitoring, and space weather observations to support forecasting by entities like the European Centre for Medium-Range Weather Forecasts and the National Weather Service (United States). The constellation aims to contribute to global observing systems coordinated by the World Meteorological Organization and to underpin operational services for aviation operators like IATA and maritime stakeholders such as International Maritime Organization. Scientific goals align with climate monitoring frameworks used by the Intergovernmental Panel on Climate Change and data assimilation for reanalysis projects like ECMWF Reanalysis (ERA5).

Spacecraft and Instrumentation

Each satellite platform is equipped with a suite of instruments including a microwave sounder analogous to AMSU, an infrared sounder conceptually related to IASI, and imagers comparable to AVHRR and VIIRS. Payloads include microwave radiometers similar to those on GPM and scatterometers following heritage from ASCAT and QuikSCAT designs. Additional instruments for GNSS radio occultation trace heritage to missions like CHAMP and COSMIC. Spacecraft buses incorporate avionics and power systems evolved from designs used on Sentinel-3 and telecommunications units compatible with ground networks such as EUMETCast and GEONETCast.

Launches and Orbit

The constellation operates in sun-synchronous, polar orbits coordinated with other polar platforms like NOAA-21 to ensure global coverage and revisit times required by operational centers including ECMWF and UK Met Office. Launch services are procured from providers in the space launch sector including Arianespace and new entrants influenced by companies such as SpaceX and United Launch Alliance. Launch trajectories draw on windows established for polar insertions similar to those used by MetOp-A and MetOp-B, with orbital maintenance strategies referencing techniques demonstrated by GOCE and Envisat mission operations.

Ground Segment and Operations

Operations are conducted by EUMETSAT in partnership with ESA and national agencies including CNES and DLR, utilizing ground stations in networks akin to EUMETCast and collaborating with international data centers such as NOAA National Centers for Environmental Information and Copernicus Climate Change Service. Command and control, mission planning, and data dissemination follow architectures used by Sentinel missions, with calibration and validation campaigns coordinated with institutions like Met Office Hadley Centre and European Climate Assessment & Dataset. Real-time services interface with aviation stakeholders represented by ICAO and IATA.

Data Products and Applications

Produced products include atmospheric temperature and humidity profiles, surface radiances, cloud products, sea-surface temperature, and wind vectors, feeding operational forecasting systems at ECMWF, research at WMO World Weather Watch, and climatology archives at Copernicus. Applications span weather prediction for agencies like NOAA and UK Met Office, oceanography services akin to Mercator Ocean, and disaster response coordination involving UN Office for the Coordination of Humanitarian Affairs. Downstream uses include inputs to commercial services used by firms such as The Weather Company and maritime routing services used by IMO-registered fleets.

Development and Partnerships

Development encompasses industrial prime contractors Airbus Defence and Space and Thales Alenia Space with suppliers across Europe and partner countries including Italy, France, Germany, United Kingdom, Spain, and research institutes like Institut Pierre-Simon Laplace and Max Planck Institute for Meteorology. International collaboration includes coordination with NOAA, JMA, and research programs at NASA centers and universities such as Massachusetts Institute of Technology and University of Oxford. Programme governance involves funding and oversight mechanisms tied to European Commission directives, national space agencies, and consortia modeled on projects like Copernicus and Galileo.

Category:Earth observation satellites Category:European Space Agency spacecraft