Title :

A simple approximation for the reflectance of a thick cloud in gaseous absorption band and its application for the cloud-top height determination

Author(s) :

Kokhanovsky, Alexander A. [Auteur]
Lelli, Luca [Auteur]
Institut für Umweltphysik [Bremen] [IUP]
Ducos, Fabrice [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Munro, Rosemary [Auteur]
European Organisation for the Exploitation of Meteorological Satellites [EUMETSAT]

Journal title :

IEEE Transactions on Geoscience and Remote Sensing

Abbreviated title :

IEEE Trans. Geosci. Remote Sensing

Volume number :

57

Publication date :

2019-06-01

ISSN :

0196-2892

English keyword(s) :

Cloud-top height (CTH)
Global Ozone Monitoring Experiment 2 (GOME-2)
hurricane
Moderate Resolution Imaging Spectroradiometer (MODIS)
Multiviewing Multichannel Multipolarization Imaging instrument (3MI)
oxygen A-band
Polarization and Anisotropy of Reflectances for Atmospheric Sciences coupled with Observations from a Lidar (PARASOL)
radiative transfer
remote sensing

HAL domain(s) :

Physique [physics]

English abstract : [en]

This paper presents a new, simple, fast method to retrieve cloud altitude from measurements of light absorption in the strongest molecular band of oxygen (the A-band), centered at 761 nm, by the polarization and directionality ...
Show more >This paper presents a new, simple, fast method to retrieve cloud altitude from measurements of light absorption in the strongest molecular band of oxygen (the A-band), centered at 761 nm, by the polarization and directionality of the earth's reflectance sensor. First, we assess the validity of the method against synthetic spectra as a function of realistic cloud scenarios and satellite observation geometries. The retrieval error estimate amounts, on average, to less than 500 m. Second, the hurricane Ileana, overpassed the August 30, 2012, off the coasts west of Mexico and Southern California, is selected as test bed for the comparison of our retrievals against independent and nearly coincident cloud data inferred with the Moderate Resolution Imaging Spectroradiometer onboard Aqua and the Global Ozone Monitoring Experiment 2 onboard MetOp-A. We find that our approach can accurately reproduce the cloud height patterns, as long as the clouds are not thin cirrus.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

CNRS
Université de Lille

Collections :

• Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518

Submission date :

2024-01-30T11:45:52Z
2024-02-26T14:45:20Z