Preparing the assimilation of IASI-NG in NWP models: a first channel selection

Francesca Vittorioso (1) , Vincent Guidard (1) , N. Fourrié (1) , J Andrey-Andrés

1 CNRM - Centre national de recherches météorologiques

As the EUMETSAT Polar System-Second Generation (EPS-SG) is being prepared, a new generation of the IASI instrument has been designed. The IASI New Generation (IASI-NG) will measure at a spectral resolution and signal-to-noise ratio improved by a factor 2 compared to its predecessor. Measurement precision will be improved as well. The high amount of data resulting from IASI-NG will present many challenges in the areas of data transmission, storage and assimilation and the number of individual pieces of information will be not exploitable in an operational Numerical Weather Predictions (NWP) context. For these reasons, an appropriate IASI-NG channel selection is needed, aiming to select the most informative channels for NWP models. In this paper the preparatory studies towards the channel selection will be displayed, as well as methodology and results concerning a very first channel selection so far obtained.

Mots clés: IASI-NG; channel selection; Numerical Weather Prediction

Domaines: Océan, Atmosphère; Sciences de la Terre; Météorologie

Francesca Vittorioso, Vincent Guidard, N. Fourrié, J Andrey-Andrés. Preparing the assimilation of IASI-NG in NWP models: a first channel selection. 21st International TOVS Study Conference, Nov 2017, Darmstadt, Germany. ⟨meteo-01799340⟩