Biological and chemical water properties measured in water bottle samples during the cruise POS432 in Madeira basin in May 2012

• Main Authors: Waniek, Joanna J, Frazão, Helena C, Krüger, Siegfried, Fründt, Birte, Fiskal, Annika, Sadkowiak, Birgit, Kreuzer, Lars, Klostermann, Birgit
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Azores Front; biogeochemistry; Chlorophyll a; CTD; Sea-Bird; SBE 911plus; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH; water; ELEVATION; Event label; fluorometer (ethanol extraction; GF/F-filtered) (Grasshoff et al.; 1999); gravimetrically (GF/F-filtered) (Grasshoff et al.; Longitude of event; Nitrate; Nitrite; Northeast Atlantic; Phaeopigments; Phosphate; POS432; POS432_118-2; POS432_119-1; POS432_120-1; POS432_121-1; POS432_124-1; POS432_125-1; POS432_126-3; POS432_128-1; POS432_129-1; POS432_131-1; POS432_132-1; POS432_133-1; POS432_136-1; POS432_137-1; POS432_138-1; Poseidon; Salinity; Silicate; Suspended particulate matter; Temperature; Water volume; filtered; wet chemical treatment; Continuous flow analysis (Grasshoff et al.
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.946626; https://doi.org/10.1594/PANGAEA.946626

During the cruise POS432 on board the German R/V Poseidon, we collected water with a CTD SBE 11plus equipped with 14 Hydrobios free flow bottles of 10 L each in 15 stations (resulting in almost 100 samples) in the Madeira basin region, Northeast Atlantic. We aimed to study the physical and biogeochemical conditions of the water column along the 22°W meridian, north and south of the Azores Front, in May 2012. We measured concentrations of chlorophyll a, phaeopigments, suspended particulate material (SPM), and nutrients such as nitrate, nitrite, phosphate, and silicate.