Meteor Expedition M148/2 EreBUS nutrient data from Benguela Upwelling System and Angola Gyre ...

Nutrient data are from Nisken Bottle samples collected and measured onboard Meteor Expedition 148/2 “EreBUS”. Concentrations of dissolved inorganic phosphate (PO4), nitrite (NO2), NOx (nitrate+nitrite), and dissolved silicate (Si) were measured with the QuAAtro39 autoanalyser (Seal Analytical) using...

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Bibliographic Details
Main Authors: Ferdelman, Timothy G, Klockgether, Gabriele, Imhoff, Kirsten, Mohrholz, Volker
Format: Dataset
Language:English
Published: PANGAEA 2021
Subjects:
ammonium
nitrate
nitrite
nutrients
Phosphate
South Atlantic Ocean
Event label
Bottle number
Latitude of event
Longitude of event
Elevation of event
DEPTH, water
Salinity
Temperature, water, potential
Oxygen
Nitrogen dioxide
Nitrogen oxide
Silicon
Nitrate
Ammonium
CTD/Rosette
Go-Flo bottles
Recalculated from ml/l by using ml/l*44.66
Oxygen, Winkler Culberson, 1991, WOCE Report 68/91
M148/2
Meteor 1986
Online Access:https://dx.doi.org/10.1594/pangaea.931090
https://doi.pangaea.de/10.1594/PANGAEA.931090
Description
Summary:Nutrient data are from Nisken Bottle samples collected and measured onboard Meteor Expedition 148/2 “EreBUS”. Concentrations of dissolved inorganic phosphate (PO4), nitrite (NO2), NOx (nitrate+nitrite), and dissolved silicate (Si) were measured with the QuAAtro39 autoanalyser (Seal Analytical) using the method based on Strickland and Parsons, 1972. OSIL Seawater Low-Nutrient Standards were employed as secondary standards to check primary standard calibrations. Nitrate values are the calculated difference between NOx and nitrite. To determine Minimal Quantifiable Limit (MQL) for NOx, nitrite, phosphate and silicate we examined the variability (standard deviation, σ) around OSIL low-nutrient seawater concentrations and set MQL = 0 + 3σ. Ammonium (NH4+) was measured shipboard using the ortho-Phthaldialdehyde (OPA) fluorescence method (Holmes et al. 1999). MQLs for the offshore stations were based on values that fell below zero after calculating the concentration based on the calibration curves established for ...

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