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Modeling the spectral shape of absorption by chromophoric dissolved organic matter

Marine Chemistry, 2004
A single exponential model of the form a g (λ)αe -s c λ was evaluated in the context of its application and interpretation in describing absorption by chromophoric dissolved organic matter (CDOM), a g , as a function of wavelength, λ. The spectral slope, s e , is often used as a proxy for CDOM composition, including the ratio of fulvic to humic acids ...
Emmanuel S Boss
exaly   +4 more sources

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Absorption and fluorescence characteristics of chromophoric dissolved organic matter in the Yangtze Estuary

Environmental Science and Pollution Research, 2013
The Yangtze Estuary is heavily influenced by coast-continent geochemical processes and anthropogenic activity; thus, the source and distribution of chromophoric dissolved organic matter (CDOM) in the estuary are strongly impacted by these processes. Here, a series of samples were collected from across the Yangtze Estuary to investigate the source and ...
Qiyuan, Sun, Chao, Wang, Peifang, Wang, Jun, Hou, Yanhui, Ao   +4 more
openaire   +2 more sources

Contribution of ferric iron to light absorption by chromophoric dissolved organic matter

Limnology and Oceanography, 2013
This study experimentally determined the contribution of ferric iron (Fe(III)) associated with humic substances (HS) to light absorption by chromophoric dissolved organic matter (CDOM). The associations between Fe(III) and HS (HS‐Fe) were generated by mixing HS standards with Fe(III) in acidic conditions and adjusting pH to 8.
Vähätalo Anssi V., Vähätalo Anssi, Hartikainen Helinä, Xiao Yi-Hua   +3 more
openaire   +1 more source

Chromophoric Dissolved Organic Matter Fluctuation Assessment in an Urban River

CLEAN – Soil, Air, Water, 2015
AbstractTo investigate the compositions and spatio‐temporal changes of chromophoric dissolved organic matter (CDOM) in a typical urban river in Taihu Basin, China, that has been treated with series of water quality mitigation measures, 180 water samples were collected from November 2011 to October 2012 and analyzed with fluorescence excitation–emission
Yuting Liang, Xian Xiao, Erdeng Du, Chengjie Song, Chaopeng Song, Yuan Zhao, Xiang Liu   +6 more
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Chromophoric dissolved organic matter in the estuaries of populated and mountainous Taiwan

Marine Chemistry, 2013
National Science Council of Taiwan [NSC 98-2621-M-110-001-MY3, NSC 101-2811-M-110-030]; "Aim for the Top" University Program of Taiwan [02C030204]; National Natural Science Foundation of China [40810069004]; Xiamen University Project 211 ...
Yang, Liyang, Hong, Huasheng, Chen, Chen-Tung Arthur, Guo, Weidong, Huang, Ting-Hsuan   +4 more
openaire   +2 more sources

Production of chromophoric dissolved organic matter by Sargasso Sea microbes

Marine Chemistry, 2004
Abstract Time series of chromophoric dissolved organic matter (CDOM) light absorption coefficients indicate a local origin for a large fraction of the CDOM in the upper water column of the Sargasso Sea. In the present study, we demonstrate that CDOM is produced in bacterial culture experiments using Sargasso Sea water and naturally occurring ...
Norman B Nelson, Craig A Carlson, Deborah K Steinberg   +2 more
openaire   +1 more source

Size characteristics of chromophoric dissolved organic matter in the Chukchi Sea

Journal of Geophysical Research: Oceans, 2016
AbstractWith the Arctic warming, terrestrial input plays a more important role in carbon cycle in the Arctic Ocean than before. Chromophoric dissolved organic matter (CDOM) as a tracer of terrestrial dissolved organic matter (tDOM) becomes more valuable in elucidating the source and compositions of DOM.
Hui Lin, Min Chen, Jian Zeng, Qi Li, Renming Jia, Xiuwu Sun, Minfang Zheng, Yusheng Qiu   +7 more
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Predicting Chromophoric Dissolved Organic Matter Distributions in Coastal Waters

2007
Abstract : It is the long-term goal of this work to evaluate our understanding of CDOM sources and distributions in coastal waters by comparing high-resolution observations with four-dimensional, physical, chemical and biological models of the CDOM fields.
Yong Tian, G. B. Gardner, Robert F. Chen
openaire   +1 more source

The Biogeochemistry of Chromophoric Dissolved Organic Matter in Coastal Waters

1997
Abstract : The long-term goal of this research is to better understand the biogeochemical cycling of dissolved organic matter (DOM) in coastal waters. Of particular interest is the fate of terrigenous and anthropogenic dissolved organic matter in marine systems.
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The role of nitrogen in chromophoric and fluorescent dissolved organic matter formation

Marine Chemistry, 2007
Abstract Microbial and photochemical processes affect chromophoric dissolved organic matter (CDOM) dynamics in the ocean. Some evidence suggests that dissolved nitrogen plays a role in CDOM formation, although this has received little systematic attention in marine ecosystems.
Erin J. Biers, Richard G. Zepp, Mary Ann Moran   +2 more
openaire   +1 more source