Remote-sensing monitoring of colored dissolved organic matter in the Arctic Ocean.
Mar Pollut Bull
; 204: 116529, 2024 Jul.
Article
de En
| MEDLINE
| ID: mdl-38824705
ABSTRACT
In the Arctic Ocean, variations in the colored dissolved organic matter (CDOM) have important value and significance. This study proposed and evaluated a novel method by combining the Google Earth Engine with a multilayer back-propagation neural network to retrieve CDOM concentration. This model performed well on the testing data and independent validation data (R2 = 0.76, RMSE = 0.37 m-1, MAPD = 35.43 %), and it was applied to Moderate Resolution Imaging Spectroradiometer (MODIS) images. The CDOM distribution in the Arctic Ocean and its main sea areas was first depicted during the ice-free period from 2002 to 2021, with average CDOM concentration in the range of 0.25 and 0.31 m-1. High CDOM concentration appeared in coastal areas affected by rivers on the Siberian side. The CDOM concentration was highly correlated with salinity (r = -0.92) and discharge (r > 0.68), while melting sea ice diluted seawater and CDOM concentration.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Eau de mer
/
Océans et mers
/
Surveillance de l'environnement
/
Technologie de télédétection
Langue:
En
Journal:
Mar Pollut Bull
Année:
2024
Type de document:
Article
Pays de publication:
Royaume-Uni