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Guéguen, Celine; Granskog, Mats A; McCullough, G; Barber, David G (2011): (Table 1) Salinity, dissolved organic carbon and absorption characteristics of surface river waters around Hudson Bay. PANGAEA,, Supplement to: Guéguen, C et al. (2011): Characterisation of colored dissolved organic matter in Hudson Bay and Hudson Strait using parallel factor analysis. Journal of Marine Systems, 88(3), 423-433,

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Composition and concentration of colored dissolved organic matter (CDOM) have been determined in Hudson Bay and Hudson Strait by excitation emission matrix spectroscopy (EEM) and parallel factor analysis (PARAFAC). Based on 63 surface samples, PARAFAC identified three fluorescent components, which were attributed to two humic- and one protein-like components. One humic-like component was identified as representing terrestrial organic matter and showed a conservative behaviour in Hudson Bay estuaries. The second humic-like component, traditionally identified as peak M, originated both from land and produced in the marine environment. Component 3 had spectra resembling protein-like material and thought to be plankton-derived. The distribution and composition of CDOM were largely controlled by water mass mixing with protein-like component being the least affected. Distinctive fluorescence patterns were also found between Hudson Bay and Hudson Strait, suggesting different sources of CDOM. The optically active fraction of DOC (both absorbing and fluorescing) was very high in the Hudson Bay (up to 89%) suggesting that fluorescence and absorbance can be used as proxies of the DOC concentration.
Related to:
Granskog, Mats A; Macdonald, Robie W; Mundy, Christopher John; Barber, David G (2007): Distribution, characteristics and potential impacts of chromophoric dissolved organic matter (CDOM) in Hudson Strait and Hudson Bay, Canada. Continental Shelf Research, 27(15), 2032-2050,
Median Latitude: 58.326800 * Median Longitude: -80.531600 * South-bound Latitude: 55.269000 * West-bound Longitude: -92.263000 * North-bound Latitude: 60.012000 * East-bound Longitude: -77.344000
Date/Time Start: 2007-07-27T00:00:00 * Date/Time End: 2007-07-27T00:00:00
Great_Whale_R * Latitude: 55.269000 * Longitude: -77.815000 * Date/Time: 2007-07-27T00:00:00 * Location: Hudson Bay * Device: Water sample (WS)
Kogaluc_R * Latitude: 59.659000 * Longitude: -77.537000 * Date/Time: 2007-07-27T00:00:00 * Location: Hudson Bay * Device: Water sample (WS)
Nelson_Hayes_R * Latitude: 57.155000 * Longitude: -92.263000 * Date/Time: 2007-07-27T00:00:00 * Location: Hudson Bay * Device: Water sample (WS)
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Area/localityAreaGuéguen, Celine
6Date/time endDate/time endGuéguen, Celine
7Station labelStationGuéguen, Celine
8SalinitySalGuéguen, Celine
9Carbon, organic, dissolvedDOCµmol/lGuéguen, Celine# = from Granskog et al. (2007)
10Absorption coefficient, 355 nmac3551/mGuéguen, Celine
11--Guéguen, Celineac355 normalized by DOC concentration in m**2/mol
12SlopeSlopeGuéguen, Celinespectral slope for light absorption 275-295 [1/nm] of colored DOM
13SlopeSlopeGuéguen, Celinespectral slope ratio
93 data points

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