Biogeochemical variables and optimum multiparameter analysis results from the tropical and subtropical Atlantic of the MAFIA cruise in 2015 ...

• Main Authors: Gómez-Letona, Markel, Arístegui, Javier, Hernández-Hernández, Nauzet, Alvarez-Salgado, Xose Anton, Álvarez, Marta, Delgadillo, Erick, Pérez-Lorenzo, Maria, Teira, Eva, Hernández-León, Santiago, Sebastian, Marta
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Atlantic; bathypelagic; dark ocean; fluorescent dissolved organic matter; mesopelagic; optimum multiparameter analysis; Oxygen; water masses; Event label; Station label; Campaign; Date/Time of event; Latitude of event; Longitude of event; DEPTH, water; Sample ID; Pressure, water; Temperature, water, potential; Salinity; Silicate; Nitrate + Oxygen tracer; Oxygen, apparent utilization; Fluorescence intensity, maximum, DOM; Absorption coefficient, colored dissolved organic matter at 254 nm; Chlorophyll a, integrated; Salinity Maximum Water, relative volume contribution; Madeira Mode Water, relative volume contribution; Equatorial Water, relative volume contribution; Eastern North Atlantic Central Water of 15°C, relative volume contribution; Eastern North Atlantic Central Water of 12°C, relative volume contribution; Subpolar Mode Water, relative volume contribution; Mediterranean Water, relative volume contribution; Antarctic Intermediate Water of 5°C, relative volume contribution; Antarctic Intermediate Water of 3.1°C, relative volume contribution; Circumpolar Deep Water, relative volume contribution; North Atlantic Deep Water of 4.6°C, relative volume contribution; North Atlantic Deep Water of 2°C, relative volume contribution; CTD/Rosette; CTD, Sea-Bird, SBE 911plus; Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39; Calculated after Broecker 1974; Titration, Winkler; Oxygen, Benson & Krause 1984; Parallel factor analysis PARAFAC; Spectrophotometer, Ocean Optics USB2000; Calculated; Optimum multiparameter analysis; MAFIA; Hespérides; Antarc*; Antarctic; North Atlantic Deep Water; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.942934; https://doi.pangaea.de/10.1594/PANGAEA.942934

This dataset contains the results of the fluorescent dissolved organic matter characterisation (FDOM) and water mass optimum multiparameter analysis from the MAFIA cruise (Migrants and Active Flux In the Atlantic ocean). Samples were collected in the tropical and subtropical Atlantic during the MAFIA cruise (April 2015) on board the BIO Hespérides. Seawater samples for biogeochemical analyses were collected at 13 stations (from the Brazilian coast to the Canary Islands), from the surface down to 3500 m, using a General Oceanics oceanographic rosette equipped with 24 l PVC Niskin bottles. Oxygen solubility was computed using the equation of Benson and Krause (1984). AOU (µmol/kg) was calculated by subtracting measured oxygen concentration from the oxygen solubility values at saturation, with respect to the atmosphere. Fluorescence measurements were performed with a Perkin-Elmer LS55 spectrofluorometer and FDOM was characterised by means of a Parallel Factor analysis. Integrated values were estimated by ...