Citation:

PANGAEA.988693

Name: Physical oceanography (CTD) during Maria S. Merian cruise MSM126
Published: 2026-02-26
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Madeira

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Published: 2026-02-26 • DOI registered: 2026-02-26

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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. A SUNA nitrate probe (Satlantic) was mounted on the CTD frame as an additional instrument during all shallow casts (<2000dbar). The nitrate measurements were also calibrated against water samples and the CTD data was supplemented accordingly.

Keyword(s):

Madeira

Related to:

Dierking, Jan (2024): Master track of MARIA S. MERIAN cruise MSM126 in 1 sec resolution (zipped, 86 MB) [dataset]. GEOMAR - Helmholtz Centre for Ocean Research Kiel, PANGAEA, https://doi.org/10.1594/PANGAEA.968903

Source:

CTD data of Cruise MSM126 in netcdf format [dataset]. msm_126_1_ctd_rel2_netcdf.zip

Coverage:

Median Latitude: 32.557205 * Median Longitude: -17.055309 * South-bound Latitude: 0.210690 * West-bound Longitude: -17.400600 * North-bound Latitude: 32.777460 * East-bound Longitude: -0.109500

Date/Time Start: 2024-02-09T19:22:39 * Date/Time End: 2024-03-02T02:21:11

Minimum DEPTH, water: 0.99 m * Maximum DEPTH, water: 4229.16 m

Event(s):

MSM126_1-1 (RID_D1) * Latitude: 32.639760 * Longitude: -16.681930 * Date/Time: 2024-02-09T19:52:00 * Elevation: -1549.0 m * Campaign: (Jellyweb Madeira) * Basis: * Method/Device: (CTD-RO)

MSM126_3-1 (RID_S2) * Latitude: 32.673040 * Longitude: -16.610280 * Date/Time: 2024-02-10T08:09:07 * Elevation: -379.0 m * Campaign: (Jellyweb Madeira) * Basis: * Method/Device: (CTD-RO)

MSM126_5-3 (RID_D1) * Latitude: 32.639700 * Longitude: -16.681970 * Date/Time: 2024-02-11T07:30:41 * Elevation: -1556.0 m * Campaign: (Jellyweb Madeira) * Basis: * Method/Device: (CTD-RO)

Comment:

PO-GLOBAL-SVN = 1146 used on 08-Dec-2025 10:35:47

Matlab = 9.14.0.2206163 (R2023a)

Release = 1

nc_project = Jellyweb Madeira

nc_uncertainty_p = 2.000000

nc_uncertainty_t = 0.002000

nc_uncertainty_s = 0.003000

nc_uncertainty_o = 3.000000

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Dierking, Jan
2	DATE/TIME	Date/Time		Dierking, Jan		Geocode
3	LONGITUDE	Longitude		Dierking, Jan		Geocode
4	LATITUDE	Latitude		Dierking, Jan		Geocode
5	Pressure, water	Press	dbar	Dierking, Jan	CTD
6	DEPTH, water	Depth water	m	Dierking, Jan	CTD	Geocode
7	Temperature, water	Temp	°C	Dierking, Jan	CTD
8	Salinity	Sal		Dierking, Jan	CTD
9	Oxygen	O2	µmol/kg	Dierking, Jan	CTD
10	Sound velocity in water	SV	m/s	Dierking, Jan	CTD
11	Density, sigma, in situ	Sigma in situ	kg/m³	Dierking, Jan	CTD
12	Fluorescence	Fluorescence	arbitrary units	Dierking, Jan	CTD
13	Turbidity (Nephelometric turbidity unit)	Turbidity	NTU	Dierking, Jan	CTD
14	Nitrogen oxide	NOx	µmol/kg	Dierking, Jan	CTD
15	Fluorescence, dissolved organic matter	fDOM	µg/l	Dierking, Jan	CTD	cdom_raw
16	Fluorescence, dissolved organic matter	fDOM	µg/l	Dierking, Jan	CTD	cdom1_raw
17	Radiation, photosynthetically active	PAR	µmol/m²/s	Dierking, Jan	CTD
18	Radiation, photosynthetically active, surface	SPAR	µmol/m²/s	Dierking, Jan	CTD
19	Radiation, photosynthetically active	PAR	µmol/m²/s	Dierking, Jan	CTD	CPAR
20	Quality flag, time	QF time		Dierking, Jan	CTD	tim_qc
21	Quality flag, longitude	QF lon		Dierking, Jan	CTD	lon_qc
22	Quality flag, latitude	QF lat		Dierking, Jan	CTD	lat_qc
23	Quality flag, pressure at given altitude	QF press alt		Dierking, Jan	CTD	p_qc
24	Quality flag, water depth	QF water depth		Dierking, Jan	CTD	z_qc
25	Quality flag, water temperature	QF water temp		Dierking, Jan	CTD	t_qc
26	Quality flag, salinity	QF sal		Dierking, Jan	CTD	s_qc
27	Quality flag, oxygen	QF O2		Dierking, Jan	CTD	o_qc
28	Quality flag	QF		Dierking, Jan	CTD	ss_qc
29	Quality flag	QF		Dierking, Jan	CTD	sth_qc
30	Quality flag	QF		Dierking, Jan	CTD	chl2_raw_qc
31	Quality flag	QF		Dierking, Jan	CTD	turb_raw_qc
32	Quality flag	QF		Dierking, Jan	CTD	nox_qc
33	Quality flag	QF		Dierking, Jan	CTD	cdom_raw_qc
34	Quality flag	QF		Dierking, Jan	CTD	cdom1_raw_qc
35	Quality flag	QF		Dierking, Jan	CTD	par_qc
36	Quality flag	QF		Dierking, Jan	CTD	spar_qc
37	Quality flag	QF		Dierking, Jan	CTD	cpar_q

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

3293984 data points

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