Fluorescent dissolved organic matter (FDOM) intensity (Parafac components and FDOM indices) in the surface water of the Mackenzie Delta Region during 4 expeditions from spring to fall in 2019 ...

• Main Authors: Matsuoka, Atsushi, Juhls, Bennet, Bécu, Guislain, Oziel, Laurent, Leymarie, Edouard, Lizotte, Martine, Ferland, Joannie, Béguin, Marine, Laberge-Carignan, Audrey, Guilmette, Caroline, Maury, Juliette, Hilborn, Andrea, Tisserand, Lucas, Devred, Emmanuel, Doxaran, David, Bossé-Demers, Thomas, Gonçalves-Araujo, Rafael, Stedmon, Colin A, Babin, Marcel
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: biogeochemistry; Biooptics; Coastal waters; hydrographic data; Mackenzie; Event label; Cruise/expedition; LATITUDE; LONGITUDE; DATE/TIME; Station label; DEPTH, water; Intensity fluorescent dissolved organic matter, component 1; Intensity fluorescent dissolved organic matter, component 2; Intensity fluorescent dissolved organic matter, component 3; Fluorescence, dissolved organic matter, A coble-peak; Fluorescence, dissolved organic matter, C coble-peak; Fluorescence, dissolved organic matter, M coble-peak; Fluorescence, dissolved organic matter, T coble-peak; Fluorescence, dissolved organic matter, fluorescence index; Fluorescence, dissolved organic matter, humification index; Fluorescence, dissolved organic matter, biological index; Multiple investigations; Fluorescence spectrometer, AquaLog, HORIBA JobinYvon; NUNATARYUK, Permafrost thaw and the changing Arctic coast, science for socioeconomic adaptation NUNATARYUK; Arctic; Mackenzie Delta; permafrost
• Online Access: https://dx.doi.org/10.1594/pangaea.937582; https://doi.pangaea.de/10.1594/PANGAEA.937582

Fluorescent dissolved organic matter intensity was measured with an Aqualog®. Measurements were corrected for inner-filter effects and for the Raman and Rayleigh scattering (Murphy et al., 2013; doi:10.1039/C3AY41160E). The different fluorescent components of DOM were isolated from combined signal by PARAFAC modeling using the “drEEM Toolbox” and following the recommendation of Murphy et al. (2013; doi:10.1039/C3AY41160E). The DOM components derived from PARAFAC modeling were compared with PARAFAC components from other studies through the OpenFluor database (Murphy et al., 2014; doi:10.1039/C3AY41935E). The coble-peaks indicate major fluorescent components (Coble 1996; doi:10.1016/0304-4203(95)00062-3) in marine FDOM EEMs (Excitation-Emission-Matrix). Peaks T represents protein-like compounds (tyrosine and tryptophane), peaks A and C are indicators of humic-like components whereas peak M was associated to marine humic-like fluorescence. The fluorescence index (FI) is calculated as the ratio of fluorescence ... : Empty cells = NA ...