Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 1
Articles | Volume 19, issue 1
https://doi.org/10.5194/amt-19-135-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-135-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 1
Research article
 | 
07 Jan 2026
Research article |  | 07 Jan 2026

Optimal estimation retrieval framework for daytime clear-sky total column water vapour from MTG-FCI near-infrared measurements

Jan El Kassar, Cintia Carbajal Henken, Xavier Calbet, Pilar Rípodas, Rene Preusker, and Jürgen Fischer

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Short summary
Water vapour (WV) is a key ingredient in virtually all meteorological processes. We present an algorithm which uses observations of the Flexible Combined Imager (FCI) to estimate the total column of WV (TCWV) over sun-lit, clear-sky pixels. FCI is a satellite instrument, and every 10 min it takes an image which covers Europe, Africa, and the Atlantic with a resolution of 1 km. Such high-resolution WV fields will provide valuable information for weather forecasters and researchers.
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