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Mapping the low salinity Changjiang Diluted Water using satellite‐retrieved colored dissolved organic matter (CDOM) in the East China Sea during high river flow season
Author(s) -
Sasaki Hiroaki,
Siswanto Eko,
Nishiuchi Kou,
Tanaka Katsuhisa,
Hasegawa Toru,
Ishizaka Joji
Publication year - 2008
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2007gl032637
Subject(s) - colored dissolved organic matter , salinity , environmental science , dissolved organic carbon , oceanography , satellite , seawater , ocean color , seawifs , china sea , climatology , geology , phytoplankton , chemistry , organic chemistry , aerospace engineering , nutrient , engineering
Absorption coefficients of colored dissolved organic matter (CDOM) [ a g ( λ )] were measured and relationship with salinity was derived in the East China Sea (ECS) during summer when amount of the Changjiang River discharge is large. Low salinity Changjiang Diluted Water (CDW) was observed widely in the shelf region and was considered to be the main origin of CDOM, resulting in a strong relationship between salinity and a g ( λ ). Error of satellite a g ( λ ) estimated by the present ocean color algorithm could be corrected by satellite‐retrieved chlorophyll data. Satellite‐retrieved salinity could be predicted with about ±1.0 accuracy from satellite a g ( λ ) and the relation between salinity and a g ( λ ). Our study suggests that satellite‐derived a g ( λ ) can be an indicator of the low salinity CDW during summer.