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First MetOp-SG and Sentinel-5 launched

Written by  Wednesday, 13 August 2025 01:50
MetOp-SG-A1 and Sentinel-5 take to the skies

Ushering in a new era of weather and climate monitoring from polar orbit, the first in a new series of satellites, MetOp Second Generation, has been lofted into orbit aboard an Ariane 6 rocket from the European spaceport in Kourou, French Guiana. As part of this new satellite’s sophisticated instrument package is the new Copernicus Sentinel-5 instrument, which is designed to deliver critical data on air pollutants, ozone and climate-related gases.

Powerful sensors for weather, climate and air quality

MetOp-SG-A1 satellite fixed to Ariane 6 launch adapter
MetOp-SG-A1 satellite fixed to Ariane 6 launch adapter

The MetOp-SG mission is made up of six satellites that will operate in successive pairs over the next 20 years, at least. Each of the three pairs consists of an A-type and B-type satellite, which carry complementary state-of-the-art instruments to provide high-resolution measurements of temperature, precipitation, clouds and winds for weather forecasting and climate analysis.

Marc Loiselet, ESA’s Project Manager for the MetOp-SG mission, said, “It’s wonderful to know that the first in the series is now safely in orbit and we will be monitoring it very closely as part of the in-orbit verification phase. Both types of satellite are extremely complex, so, I too, would like to thank everyone who has been self in the development and its road to orbit.

Although our focus has been very much on getting MetOp-SG-A1 ready for liftoff over the last months, we also have its partner satellite, MetOp-SG-B1 on the horizon, which is set to launch next year to complete the first pair.”

MetOp-SG A1 carries six instruments: a next-generation infrared atmospheric sounder, a microwave sounder, a multispectral imaging radiometer, a novel multiviewing, multichannel, multipolarisation imager, a radio occultation sounder (which is also embarked on the MetOp-SG-B satellites), and the Copernicus Sentinel-5 spectrometer.

The type-B satellites will carry five instruments: a scatterometer, the other radio occultation sounder, a novel microwave imager, a novel ice-cloud imager, and an Argos-4 data collection system.

They are the first ESA-developed satellites to carry a system for active disposal at their mission’s end. Each MetOp-SG satellite is fitted with an extra thruster, enabling it to self-destruct in Earth’s atmosphere when the mission is complete.

Read: MetOp Second Generation mission kit


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