Titre :

Consistency analysis of water diffuse attenuation between ICESat-2 and MODIS in Marginal Sea: A case study in China Sea

Auteur(s) :

Zhang, Zhenhua [Auteur]
Zhang, Siqi [Auteur]
Behrenfeld, Michael [Auteur]
Jamet, Cédric [Auteur]
Université du Littoral Côte d'Opale [ULCO]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Di Girolamo, Paolo [Auteur]
Università degli studi della Basilicata = University of Basilicata [UNIBAS]
Dionisi, Davide [Auteur]
Istituto di Science Marine [ISMAR ]
Hu, Yongxiang [Auteur]
Lu, Xiaomei [Auteur]
Pan, Yuliang [Auteur]
Luo, Minzhe [Auteur]
Huang, Haiqing [Auteur]
Pan, Delu [Auteur]
Chen, Peng [Auteur]

Titre de la revue :

Remote Sensing of Environment

Pagination :

114602

Éditeur :

Elsevier

Date de publication :

2025-03-01

ISSN :

0034-4257

Mot(s)-clé(s) en anglais :

Multiple scattering correction
MODIS
Ocean optics
Ocean color
Spaceborne lidar ICESat-2
Diffuse attenuation coefficient
Lidar attenuation coefficient

Discipline(s) HAL :

Planète et Univers [physics]/Océan, Atmosphère
Sciences de l'environnement/Ingénierie de l'environnement
Sciences de l'ingénieur [physics]/Traitement du signal et de l'image [eess.SP]

Résumé en anglais : [en]

Recent studies highlight the application of deriving the attenuation coefficient from spaceborne photon-counting lidar ATLAS/ICESat-2 over open oceans on global scales. However, its performance in the more optically complex ...
Lire la suite >Recent studies highlight the application of deriving the attenuation coefficient from spaceborne photon-counting lidar ATLAS/ICESat-2 over open oceans on global scales. However, its performance in the more optically complex and variable environments of marginal seas, which are more susceptible to human activity, has not been validated yet. In this study, we present an in-depth analysis of the consistency between diffuse attenuation coefficient (K d ) detection from MODIS and ICESat-2 in China's Marginal Seas. Findings demonstrate that ICESat-2 possesses strong capabilities for the retrieval of the attenuation coefficient across differing aquatic environments. However, discrepancies exist between the lidar system attenuation coefficient obtained from ICESat-2 and the diffuse attenuation coefficient determined by MODIS, influenced by factors such as multiple scattering. Implementation of a novel multiple scattering correction model demonstrates a notable ability in significantly reducing the inconsistency. Validation with in-situ Biogeochemical Argo float measurements reveals an enhancement in the accuracy of lidar-derived diffuse attenuation coefficients upon correction, with the mean absolute percent difference between lidar-derived K d and Argo-K d decreasing from 26 % to 15.7 %. The multiple scattering model developed can bridge the gap between the passive and active remote sensing detection and improve the reliability of lidar-derived attenuation coefficients. Fusing these two missions will greatly improve ocean observation capabilities, providing unprecedented opportunities for precise and comprehensive assessment of marine light environments. This approach has broad implications for ocean science and the application of satellite remote sensing in environmental studies.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL