Airbus-built MetOp-a Weather Satellite Retires After 15 Years Of Operations

After 15 years of successful operations ESA´s/Eumetsat´s weather satellite MetOp-A ,which was built in the satellite centres of Airbus Defence and Space at Toulouse (France) and Friedrichshafen (Germany), has now retired. Launched on 19 October 2006, MetOp-A has tripled its planned lifetime and has become a game changer in contributing to weather forecasting and climate research.

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MetOp-A was Europe’s first operational polar-orbiting satellite and the first in a series of three satellites which has brought tremendous benefits to numerical weather prediction (NWP). The satellite was packed with a set of novel and advanced instruments as well as with proven sensors. With the combined use of these eleven instruments, MetOp-A was the most influential weather satellite of its generation.

MetOp-B, launched in 2012, and MetOp-C, launched in 2018, will be used until the second generation of MetOp satellites – MetOpSG –  is operational. This new generation of meteorological satellites will comprise two types of spacecraft, of which there will be three each. They are currently under development at Airbus. These new generation satellites will carry even more sophisticated technology to support weather forecasting and will increase our understanding of Earth system science.

The combined use of data from the original Metop satellites, of which two remain operational in orbit, represents on average nearly 45% of observations used at the European Centre for Medium-Range Weather Forecasts (ECMWF) and accounted for around 27% of the total impact of all observations assimilated by the Centre.

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Data from Metop helps to analyse many aspects of the atmosphere in the forecasting model: the vertical distribution of temperature, humidity and indirectly the wind (IASI, AMSU-A, MHS and GRAS); surface winds (ASCAT); surface moisture over land (ASCAT); atmospheric winds (AVHRR); and ozone (GOME-2).

Derived products from IASI, GOME-2 and AVHRR are used to monitor and constrain many aspects of atmospheric composition.

The Airbus made ASCAT was a new generation scatterometer instrument designed primarily to measure surface wind over oceans. The data are also useful to derive soil moisture over land.

The instrument is equipped with two sets of three antennae allowing simultaneous measurements to be made from three directions to reduce the wind direction ambiguity.

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