Titre :

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

Auteur(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]

Titre de la revue :

IEEE Transactions on Geoscience and Remote Sensing

Nom court de la revue :

IEEE Trans. Geosci. Remote Sensing

Numéro :

57

Date de publication :

2019-06-01

ISSN :

0196-2892

Mot(s)-clé(s) en anglais :

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

Discipline(s) HAL :

Physique [physics]

Résumé en anglais : [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 ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CNRS
Université de Lille

Collections :

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

Date de dépôt :

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