Remote-sensing monitoring of colored dissolved organic matter in the Arctic Ocean.
Mar Pollut Bull
; 204: 116529, 2024 Jul.
Article
em 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.
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Base de dados:
MEDLINE
Assunto principal:
Água do Mar
/
Oceanos e Mares
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Monitoramento Ambiental
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Tecnologia de Sensoriamento Remoto
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article