The MetOp satellites are essential for numerical weather prediction from ranges of 12 hours out to 10 days. The still-operational MetOp-A and MetOp-B satellites today make the single biggest contribution to reducing errors in weather forecasts.
With a total launch mass of 4,084 kilograms, MetOp-C will be placed into a polar orbit at an altitude of 811 kilometres. It is carrying the IASI instrument built by Thales Alenia Space with technical oversight from CNES in partnership with Eumetsat. In addition to acquiring temperature and humidity data, this French instrument measures more than 25 atmospheric constituents with a high degree of precision and is thus playing a key role in climate monitoring. IASI instruments are already flying on the MetOp-A and MetOp-B satellites launched by the European Space Agency (ESA) and Eumetsat in 2006 and 2012. MetOp-C’s expected lifetime is five years.
The Soyuz launch will be carried live on
https://iasi.cnes.fr/en/live via YouTube
Check out the photos of the VS19 flight campaign at the Guiana Space Centre at