Physical oceanography (CTD) during METEOR cruise M181


Seabird 911plus systems equipped with dual temperature-conductivity-oxygen sensors were employed. All systems had a 24-bottle water sampling rosette with 10 l Niskin bottles. Water sampling, processing, and calibration followed GO-SHIP recommendations (Swift, 2010; McTaggart et al., 2010; Uchida et al., 2010) and included the recommended steps Data Conversion, Sensor Time-Alignment, Creation of Bottle Files, Outlier Removal, Pressure Sensor Filtering, Conductivity Cell Thermal Mass Correction, Ship Roll Correction and Deck Offset Correction by Loop Editing, as well as Derivation of Calculated Properties. After these steps, conductivity and oxygen readings were calibrated against values determined with salinometry and Winkler titration , respectively. Finally, the downcast data was averaged over 1 dbar wide intervals. An independent upcast calibration was used to obtain calibrated CTDO values coincident with the discrete water samples.

PO-GLOBAL-SVN = 975 used on 16-Dec-2022 12:30:42Matlab = (R2018a)Release = 3nc_uncertainty_p = 2.000000nc_uncertainty_t = 0.002000nc_uncertainty_s = 0.003000nc_uncertainty_o = 1.000000

Related Identifier
Metadata Access
Creator Brandt, Peter (ORCID: 0000-0002-9235-955X); Subramaniam, Ajit ORCID logo; Krahmann, Gerd
Publisher PANGAEA
Publication Year 2022
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 3098650 data points
Discipline Earth System Research
Spatial Coverage (-44.257W, -16.999S, 13.550E, 0.006N); South Atlantic Ocean
Temporal Coverage Begin 2022-04-21T15:12:48Z
Temporal Coverage End 2022-05-20T18:05:38Z