Dengler, Marcus; Brandt, Peter; Herrford, Josefine; Krahmann, Gerd (2021): Physical oceanography (CTD) during METEOR cruise M148 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.928997
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2021-03-11 • DOI registered: 2023-06-20
Abstract:
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.
Source:
CTD data of Cruise M148 in netcdf format [dataset]. met_148_1_ctd_rel4a_netcdf.zip
Further details:
Project(s):
Southwest African Coastal Upwelling System and Benguela Niños (SACUS/SACUS-II)
Coverage:
Median Latitude: -11.587954 * Median Longitude: -11.651101 * South-bound Latitude: -22.665340 * West-bound Longitude: -35.893700 * North-bound Latitude: -6.209760 * East-bound Longitude: 14.216440
Date/Time Start: 2018-05-30T21:06:35 * Date/Time End: 2018-06-28T15:51:39
Minimum DEPTH, water: 1.99 m * Maximum DEPTH, water: 5635.87 m
Event(s):
M148/1_1-1 (CTD 001) * Latitude: -10.242770 * Longitude: -35.893520 * Date/Time: 2018-05-30T21:12:00 * Elevation: -222.0 m * Campaign: M148/1 (Angola Circ, AMOC) * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M148/1_2-1 (CTD 002) * Latitude: -10.253950 * Longitude: -35.875770 * Date/Time: 2018-05-30T22:30:00 * Elevation: -525.0 m * Campaign: M148/1 (Angola Circ, AMOC) * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M148/1_5-1 (CTD 003) * Latitude: -10.265500 * Longitude: -35.859100 * Date/Time: 2018-05-31T00:40:00 * Elevation: -925.0 m * Campaign: M148/1 (Angola Circ, AMOC) * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
Comment:
PO-GLOBAL-SVN = 762 used on 16-Dec-2020 09:59:24
Matlab = 9.4.0.813654 (R2018a)
Release = 4
nc_uncertainty_p = 2.000000
nc_uncertainty_t = 0.002000
nc_uncertainty_s = 0.003000
nc_uncertainty_o = 1.500000
Fluorescence and Turbidity data still contain deck offsets. Use with caution
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Dengler, Marcus | |||
| 2 | DATE/TIME | Date/Time | Dengler, Marcus | Geocode | ||
| 3 | LONGITUDE | Longitude | Dengler, Marcus | Geocode | ||
| 4 | LATITUDE | Latitude | Dengler, Marcus | Geocode | ||
| 5 | Pressure, water | Press | dbar | Dengler, Marcus | ||
| 6 | DEPTH, water | Depth water | m | Dengler, Marcus | Geocode | |
| 7 | Temperature, water | Temp | °C | Dengler, Marcus | ||
| 8 | Salinity | Sal | Dengler, Marcus | |||
| 9 | Oxygen | O2 | µmol/kg | Dengler, Marcus | ||
| 10 | Sound velocity in water | SV | m/s | Dengler, Marcus | ||
| 11 | Density, sigma, in situ | Sigma in situ | kg/m3 | Dengler, Marcus | ||
| 12 | Fluorescence | Fluorescence | arbitrary units | Dengler, Marcus | ||
| 13 | Turbidity (Nephelometric turbidity unit) | Turbidity | NTU | Dengler, Marcus | ||
| 14 | Nitrogen oxide | NOx | µmol/kg | Dengler, Marcus | SUNA Nox |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
1986201 data points
Download Data
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