Spatial Distribution of Colored Dissolved Organic Matter in the Western Arctic Ocean
Optical properties of colored dissolved organic matter (CDOM) were investigated along a latitudinal transect (67°–77° N) in upper water (<80 m depth) of the western Arctic Ocean. The absorption coefficient at 280 nm was 0.48–1.25 m−1, with the average for the oligotrophic basin area (1.04 ± 0.08...
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ftmdpi:oai:mdpi.com:/2077-1312/10/3/352/ 2023-08-20T04:03:43+02:00 Spatial Distribution of Colored Dissolved Organic Matter in the Western Arctic Ocean Xiaoxia Cai Yanpei Zhuang Hongliang Li Jing Xu Haiyan Jin Jianfang Chen agris 2022-03-02 application/pdf https://doi.org/10.3390/jmse10030352 EN eng Multidisciplinary Digital Publishing Institute Marine Biology https://dx.doi.org/10.3390/jmse10030352 https://creativecommons.org/licenses/by/4.0/ Journal of Marine Science and Engineering; Volume 10; Issue 3; Pages: 352 colored DOM marine carbon cycle Arctic Ocean ice melt Pacific water inflow Text 2022 ftmdpi https://doi.org/10.3390/jmse10030352 2023-08-01T04:20:28Z Optical properties of colored dissolved organic matter (CDOM) were investigated along a latitudinal transect (67°–77° N) in upper water (<80 m depth) of the western Arctic Ocean. The absorption coefficient at 280 nm was 0.48–1.25 m−1, with the average for the oligotrophic basin area (1.04 ± 0.08 m−1) being slightly higher than that of the productive shelf area (0.95 ± 0.16 m−1), implying a decoupling effect between CDOM concentration and biological productivity in the western Arctic Ocean. The spectral slope coefficient S270–350 was negatively correlated with salinity, indicating that DOM molecular weight increases with salinity, and may be affected by melt-water input. Four fluorescent components were identified by excitation emission matrices elaborated by parallel factor analysis, including three humic-like (C1, C3, and C4) components and one protein-like (C2) component. Significant increases in concentrations of terrestrially derived humic-like C3 and C4 components with salinity were observed in the basin, mainly controlled by the physical mixing of surface fresh water and subsurface inflowing Pacific Ocean water. Terrestrial material carried by Pacific inflow is thus an important factor affecting the distribution of CDOM fluorescence components. The C3 and C4 fluorescence components may be useful as tracers of Pacific water in the western Arctic Ocean. Text Arctic Arctic Ocean MDPI Open Access Publishing Arctic Arctic Ocean Pacific Journal of Marine Science and Engineering 10 3 352 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
colored DOM marine carbon cycle Arctic Ocean ice melt Pacific water inflow |
spellingShingle |
colored DOM marine carbon cycle Arctic Ocean ice melt Pacific water inflow Xiaoxia Cai Yanpei Zhuang Hongliang Li Jing Xu Haiyan Jin Jianfang Chen Spatial Distribution of Colored Dissolved Organic Matter in the Western Arctic Ocean |
topic_facet |
colored DOM marine carbon cycle Arctic Ocean ice melt Pacific water inflow |
description |
Optical properties of colored dissolved organic matter (CDOM) were investigated along a latitudinal transect (67°–77° N) in upper water (<80 m depth) of the western Arctic Ocean. The absorption coefficient at 280 nm was 0.48–1.25 m−1, with the average for the oligotrophic basin area (1.04 ± 0.08 m−1) being slightly higher than that of the productive shelf area (0.95 ± 0.16 m−1), implying a decoupling effect between CDOM concentration and biological productivity in the western Arctic Ocean. The spectral slope coefficient S270–350 was negatively correlated with salinity, indicating that DOM molecular weight increases with salinity, and may be affected by melt-water input. Four fluorescent components were identified by excitation emission matrices elaborated by parallel factor analysis, including three humic-like (C1, C3, and C4) components and one protein-like (C2) component. Significant increases in concentrations of terrestrially derived humic-like C3 and C4 components with salinity were observed in the basin, mainly controlled by the physical mixing of surface fresh water and subsurface inflowing Pacific Ocean water. Terrestrial material carried by Pacific inflow is thus an important factor affecting the distribution of CDOM fluorescence components. The C3 and C4 fluorescence components may be useful as tracers of Pacific water in the western Arctic Ocean. |
format |
Text |
author |
Xiaoxia Cai Yanpei Zhuang Hongliang Li Jing Xu Haiyan Jin Jianfang Chen |
author_facet |
Xiaoxia Cai Yanpei Zhuang Hongliang Li Jing Xu Haiyan Jin Jianfang Chen |
author_sort |
Xiaoxia Cai |
title |
Spatial Distribution of Colored Dissolved Organic Matter in the Western Arctic Ocean |
title_short |
Spatial Distribution of Colored Dissolved Organic Matter in the Western Arctic Ocean |
title_full |
Spatial Distribution of Colored Dissolved Organic Matter in the Western Arctic Ocean |
title_fullStr |
Spatial Distribution of Colored Dissolved Organic Matter in the Western Arctic Ocean |
title_full_unstemmed |
Spatial Distribution of Colored Dissolved Organic Matter in the Western Arctic Ocean |
title_sort |
spatial distribution of colored dissolved organic matter in the western arctic ocean |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/jmse10030352 |
op_coverage |
agris |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Journal of Marine Science and Engineering; Volume 10; Issue 3; Pages: 352 |
op_relation |
Marine Biology https://dx.doi.org/10.3390/jmse10030352 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jmse10030352 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
3 |
container_start_page |
352 |
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1774714145973731328 |