Dear All,
Since 2008 the GSICS community has used IASI-A (i.e IASI onboard MetOp-A) as a reference instrument to monitor concurrently flying GEO and LEO, IR instruments. The high stability that it retained most of its life span, within design specifications performance and a wide spectrum that spans most of the channels of in-orbit IR instruments has been extremely helpful in monitoring instruments and detecting anomalies in them.
We have now been notified that the MetOp -A ( platform carrying IASI-A ) would be entering its end of life phase. Please see the attached timeline of this transition phase sent by Dorothee Coppens at EUMETSAT.

IASI users are encouraged to switch to using IASI-B / IASI-C ( see GSICS Decision below)
| D.GIR.2019.7k.1 | | All agencies to switch to IASI-B asap as Anchor reference for NRTC and RAC products. | | | 3/1/2020 | | | Open |
Thanks
Manik Bali
GCC, Coordination Center