Towards a Near Infrared Total Column Water Vapour Retrieval for MTG-FCI


Jan El-Kassar and Cintia Carbajal Henkel (Free University of Berlin) talk about their efforts to develop an optimal estimation algorithm for the 0.865 and 0.914 micrometer bands to retrieve a total column water product.


MTG-FCI will feature a band configuration in the rho-sigma-tau absorption band of water vapour (0.865 and 0.914 microns). We are developing an optimal estimation algorithm for these two bands to retrieve a total column water vapour product, which will be highly sensitive to boundary layer moisture.
We show preliminary results from a first prototype based on COWa (Copernicus Sentinel-3 OLCI Water Vapour) applied to spatially high-resolved data (~300m) from the Ocean and Land Colour Imager (OLCI) onboard the polar-orbiting satellites Sentinel-3.
In a next step we analyse the relationship between spatial variability metrics in the water vapour field and convective initiation over Germany, exploiting the advanced observation capabilities of current and future satellite-based imagers.


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Lecture slides