Citation:

PANGAEA.943432

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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.

Related to:

Körtzinger, Arne; Andrae, Alexandra; Baschek, Burkard; Becker, Kevin W; Behr, Hein-Dieter; Blandfort, Daniel; Calil, Paulo H R; Carrasco, Ruben; Dengler, Marcus; Devresse, Quentin; Engel, Anja; Fiedler, Björn; Fischer, Gerhard; Fischer, Tim; Flintrop, Clara; Fomba, Khanneh Wadinga; Golde, Sandra; Hahn, Tobias; Hauss, Helena; Hepach, Helmke; Heymann, Kerstin; Hieronymi, Martin; Horstmann, Jochen; Hufnagel, Lili; Iversen, Morten Hvitfeldt; Karstensen, Johannes; Katzenmeier, Sven; Knudsen, Juri; Kock, Thomas; Krahmann, Gerd; Krasemann, Hansjörg; Merckelbach, Lucas; Moradi, Nasrollah; Nothof, Maren; Paulsen, Melf; Raeke, Andreas; Röttgers, Rüdiger; Schultze, Larissa; Stoeck, Thorsten (2020): Eddy Study to Understand Physical-Chemical-Biological Coupling and the Biological Carbon Pump as a Function of Eddy Type off West Africa, Cruise No. M160, 23.11.2019 - 20.12.2019, Mindelo (Cabo Verde) - Mindelo (Cabo Verde). METEOR-Berichte, Gutachterpanel Forschungsschiffe, M160, 54 pp, https://doi.org/10.2312/cr_m160

Source:

CTD data of Cruise M160 in netcdf format

Project(s):

Role of Eddies for the Carbon Pump in Coastal upwelling Areas (REEBUS)

Coverage:

Median Latitude: 16.521752 * Median Longitude: -22.828457 * South-bound Latitude: 14.267680 * West-bound Longitude: -25.998040 * North-bound Latitude: 18.599700 * East-bound Longitude: -19.700380

Date/Time Start: 2019-11-24T20:18:24 * Date/Time End: 2019-12-17T23:24:41

Minimum DEPTH, water: 1.99 m * Maximum DEPTH, water: 4173.69 m

Event(s):

M160_5-1 * Latitude: 14.503400 * Longitude: -25.169480 * Date/Time: 2019-11-24T20:54:00 * Elevation: -4346.0 m * Location: South Atlantic Ocean * Campaign: * Basis: * Method/Device: (CTD-RO)

M160_10-1 * Latitude: 14.500980 * Longitude: -24.998720 * Date/Time: 2019-11-25T12:25:00 * Elevation: -4196.0 m * Location: South Atlantic Ocean * Campaign: * Basis: * Method/Device: (CTD-RO)

M160_15-1 * Latitude: 14.483320 * Longitude: -25.049750 * Date/Time: 2019-11-25T21:23:00 * Elevation: -4297.0 m * Location: South Atlantic Ocean * Campaign: * Basis: * Method/Device: (CTD-RO)

Comment:

PO-GLOBAL-SVN = 901 used on 31-Mar-2022 14:17:43

Matlab = 9.4.0.813654 (R2018a)

Release = 3

Release_History = 1: initial release 2: new time-position info in header 3: with OPUS nitrate data

nc_uncertainty_p = 2.000000

nc_uncertainty_t = 0.002000

nc_uncertainty_s = 0.003000

nc_uncertainty_o = 1.000000

Comment = par is UNCALIBRATED

Comment = spar is UNCALIBRATED

Comment = Fluorescence and Turbidity data still contain deck offsets. Use with caution

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event		Krahmann, Gerd
2	Sample code/label	Sample label		Krahmann, Gerd
3	DATE/TIME	Date/Time		Krahmann, Gerd	Geocode
4	LONGITUDE	Longitude		Krahmann, Gerd	Geocode
5	LATITUDE	Latitude		Krahmann, Gerd	Geocode
6	Pressure, water	Press	dbar	Krahmann, Gerd
7	DEPTH, water	Depth water	m	Krahmann, Gerd	Geocode
8	Temperature, water	Temp	°C	Krahmann, Gerd
9	Salinity	Sal		Krahmann, Gerd
10	Oxygen	O2	µmol/kg	Krahmann, Gerd
11	Sound velocity in water	SV	m/s	Krahmann, Gerd
12	Density, sigma, in situ	Sigma in situ	kg/m³	Krahmann, Gerd
13	Fluorescence	Fluorescence	arbitrary units	Krahmann, Gerd
14	Turbidity (Nephelometric turbidity unit)	Turbidity	NTU	Krahmann, Gerd
15	Nitrogen oxide	NOx	µmol/kg	Krahmann, Gerd
16	Organic matter, colored dissolved	CDOM	ppb (QSE)	Krahmann, Gerd
17	Radiation, photosynthetically active	PAR	µmol/m²/s	Krahmann, Gerd
18	Radiation, photosynthetically active, surface	SPAR	µmol/m²/s	Krahmann, Gerd

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1054976 data points

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