A230-0011
Retrieval of midlatitude cloud properties from FIRMOS downwelking spectral radiance

Wednesday, 16 December 2020
Poster
Gianluca Di Natale1, Giovanni Bianchini2, Luca Palchetti2, Claudio Belotti3, Silvia Viciani2, Francesco D'Amato4, Marco Barucci2, Alessio Montori2, Samuele Del Bianco5, Marco Gai6, Ralf Sussmann7 and Hannes Vogelmann7, (1)Istituto Nazionale di Ottica-CNR (INO-CNR), Florence, Italy, (2)CNR-INO National Institute of Optics, Florence, Italy, (3)Imperial College London, London, United Kingdom, (4)Istituto nazionale di Ottica-CNR, Sesto fiorentino, Firenze, Italy, (5)CNR Institute of Applied Physics " Nello Carrara ", Sesto Fiorentino, Italy, (6)Institute of Applied Physics "Nello Carrara'' - National Research Center of Italy, Sesto Fiorentino, Italy, (7)Karlsruhe Institute of Technology, IMK-IFU, Garmisch, Germany
Abstract:
In this paper, we present the retrieval of midlatitude ice, liquid water and mixed phase cloud parameters from the longwave downwelling spectral radiance measured with the far infrared radiation mobile observation system (FIRMOS) spectrometer. FIRMOS, developed within an ESA project for the preparation of the FORUM mission, was installed for 2 months (December 2018 and January-February 2019) at the Alpine observatory of Mt. Zugspitze, in the South of Germany, at about 3000 m a.s.l. The contemporary availability of backscattering lidar, located at the Schneefernerhaus station, 300 m below the Zugspitze summit, allow to constrain the cloud position in the radiative transfer model and to retrieve optical depth, phase and cloud microphysics with improved accuracy. A good agreement is found between the optical depth values obtained from the lidar and those from radiance measurements.
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