Articles | Volume 12, issue 6
https://doi.org/10.5194/amt-12-3001-2019
https://doi.org/10.5194/amt-12-3001-2019
Research article
 | 
03 Jun 2019
Research article |  | 03 Jun 2019

Homogeneity criteria from AVHRR information within IASI pixels in a numerical weather prediction context

Imane Farouk, Nadia Fourrié, and Vincent Guidard

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Short summary
A selection for homogeneous scenes for the assimilation of IASI radiances is proposed by using information on the collocated imager pixels inside each infrared observation. A revised method for the selection, which represents a compromise between two methods to select homogeneous scenes using homogeneity criteria already proposed in the literature, has a positive impact on the observation minus the simulation statistics. It has been tested in a numerical weather prediction model for clear sky.