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 ± 0.0...
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2022
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ftdoajarticles:oai:doaj.org/article:fe1fc42979c94ac1bb39a485906373b3 2023-05-15T14:43:53+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 2022-03-01T00:00:00Z https://doi.org/10.3390/jmse10030352 https://doaj.org/article/fe1fc42979c94ac1bb39a485906373b3 EN eng MDPI AG https://www.mdpi.com/2077-1312/10/3/352 https://doaj.org/toc/2077-1312 doi:10.3390/jmse10030352 2077-1312 https://doaj.org/article/fe1fc42979c94ac1bb39a485906373b3 Journal of Marine Science and Engineering, Vol 10, Iss 352, p 352 (2022) colored DOM marine carbon cycle Arctic Ocean ice melt Pacific water inflow Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 article 2022 ftdoajarticles https://doi.org/10.3390/jmse10030352 2022-12-31T04:10:43Z 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 S 270–350 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. Article in Journal/Newspaper Arctic Arctic Ocean Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Pacific Journal of Marine Science and Engineering 10 3 352 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
colored DOM marine carbon cycle Arctic Ocean ice melt Pacific water inflow Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
spellingShingle |
colored DOM marine carbon cycle Arctic Ocean ice melt Pacific water inflow Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 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 Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
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 S 270–350 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 |
Article in Journal/Newspaper |
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 |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/jmse10030352 https://doaj.org/article/fe1fc42979c94ac1bb39a485906373b3 |
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, Vol 10, Iss 352, p 352 (2022) |
op_relation |
https://www.mdpi.com/2077-1312/10/3/352 https://doaj.org/toc/2077-1312 doi:10.3390/jmse10030352 2077-1312 https://doaj.org/article/fe1fc42979c94ac1bb39a485906373b3 |
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 |
_version_ |
1766315471352627200 |