Titre :

Thermal emission in the successive orders of scattering (SOS) radiative transfer approach

Auteur(s) :

Herreras Giralda, Marcos [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Litvinov, P. [Auteur]
Doubovik, Oleg [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Derimian, Yevgeny [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Lapyonok, T. [Auteur]
Laboratoire d’Optique Atmosphérique - UMR 8518 [LOA]
Fuertes, D. [Auteur]
Sourdeval, Odran [Auteur]
Laboratoire d'Optique Atmosphérique (LOA) - UMR 8518
Preusker, R. [Auteur]
Fischer, J. [Auteur]

Titre de la revue :

Journal of Quantitative Spectroscopy and Radiative Transfer

Numéro :

291

Pagination :

108327

Éditeur :

Elsevier BV

Date de publication :

2022-11

ISSN :

0022-4073

Mot(s)-clé(s) en anglais :

Radiative transfer
Successive orders of scattering
Thermal emission
GRASP
Polarization

Discipline(s) HAL :

Planète et Univers [physics]/Océan, Atmosphère
Planète et Univers [physics]

Résumé en anglais : [en]

The Successive Orders of Scattering (SOS) approach [1] is one of the well known methods for solving the Radiative Transfer (RT) problem. Its efficiency in terms of speed and accuracy of computation was already demonstrated ...
Lire la suite >The Successive Orders of Scattering (SOS) approach [1] is one of the well known methods for solving the Radiative Transfer (RT) problem. Its efficiency in terms of speed and accuracy of computation was already demonstrated for scattering and absorbing atmospheres in Solar spectrum. Although there are no principle limitations to account for the emission processes, the application of the SOS method for atmospheres with thermal emission is not widely used yet. In this paper we present a SOS-based RT approach accounting for the full source function, which enables its application from the UV (UltraViolet) to the TIR (Thermal InfraRed) parts of the electromagnetic spectrum. The atmospheric vertical discretization in this extended SOS scheme is a key point in order to properly retain the scattering and emission processes. An analysis of different methodologies to perform this vertical discretization is presented. The numerical implementation has been included in GRASP (Generalized retrieval of Atmosphere and Surface Properties) RT code [2]. In comparison with the widely used code DISORT (DIScrete-ORdinatemethod for Radiative Transfer) [3], the developed SOS scheme achieves a mean accuracy of radiance calculation of 0.005 K (0.003%) expressed in terms of brightness temperature. Under the same configuration and vertically inhomogeneous atmospheric conditions, GRASP SOS RT is approximately eight times faster than DISORT. The analysis of the sensitivity of GRASP TIR SOS scheme to the number of layers and the effect of polarization are also investigated in the paper.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS

Collections :

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

Équipe(s) de recherche :

Interactions Rayonnement Nuages (IRN)

Date de dépôt :

2023-01-06T12:13:15Z
2023-01-10T15:19:18Z