Subramaniam, Ajit; Krahmann, Gerd (2021): Hydrochemistry of water samples during METEOR cruise M119 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.934450
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Abstract:
Water sample data from M119. The data are a combination of CTD values at the time of the bottle closing, salinity measurements with an Autosal salinometer, dissolved oxygen measurements by Winkler titration and nutrient measurements.
Nutrient samples were collected for analysis of inorganic nutrients - nitrate+nitrite, soluble reactive phosphorus, and silicate from several depths in the upper 200m. About 15mL of seawater was frozen and transported back to Georgia Institute of Technology for analysis using a Lachat QuikChem 8000 flow-injection analysis system (Lachat Instruments, Loveland CO, USA) and following JGOFS methods described by (Knap 1996).
Related to:
Brandt, Peter (2016): Oxygen variability and tropical Atlantic circulation - Cruise No. M119 - September 8 - October 12, 2015 - Mindelo (Cape Verde) - Recife (Brazil). METEOR-Berichte, DFG-Senatskommission für Ozeanographie, M119, 45 pp, https://doi.org/10.2312/cr_m119
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 27542298: Climate - Biogeochemistry Interactions in the Tropical Ocean
Coverage:
Median Latitude: -0.728789 * Median Longitude: -27.701565 * South-bound Latitude: -11.501240 * West-bound Longitude: -35.895850 * North-bound Latitude: 17.612830 * East-bound Longitude: -21.209830
Date/Time Start: 2015-09-08T23:20:00 * Date/Time End: 2015-10-10T21:31:00
Minimum DEPTH, water: -0.3 m * Maximum DEPTH, water: 5620.3 m
Event(s):
M119_684-1 (CTD001) * Latitude: 17.614670 * Longitude: -24.344670 * Date/Time: 2015-09-08T23:20:00 * Elevation: -3620.0 m * Campaign: M119 * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M119_686-1 (CTD002) * Latitude: 17.612830 * Longitude: -24.346830 * Date/Time: 2015-09-09T05:22:00 * Elevation: -3617.0 m * Campaign: M119 * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M119_692-1 (CTD003) * Latitude: 17.604500 * Longitude: -24.295500 * Date/Time: 2015-09-09T18:29:00 * Elevation: -3613.0 m * Campaign: M119 * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
Comment:
Quality flag =1 means nutrient values are questionable
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Subramaniam, Ajit | |||
| 2 | Profile | Profile | Subramaniam, Ajit | |||
| 3 | Sample code/label | Sample label | Subramaniam, Ajit | |||
| 4 | Run | Run | Subramaniam, Ajit | |||
| 5 | Date/Time of event | Date/Time | Subramaniam, Ajit | |||
| 6 | LATITUDE | Latitude | Subramaniam, Ajit | Geocode | ||
| 7 | LONGITUDE | Longitude | Subramaniam, Ajit | Geocode | ||
| 8 | Bottle number | Bottle | Subramaniam, Ajit | |||
| 9 | DEPTH, water | Depth water | m | Subramaniam, Ajit | Geocode | |
| 10 | Pressure, water | Press | dbar | Krahmann, Gerd | CTD | |
| 11 | Temperature, water | Temp | °C | Krahmann, Gerd | CTD | |
| 12 | Salinity | Sal | Krahmann, Gerd | CTD | ||
| 13 | Oxygen | O2 | µmol/kg | Krahmann, Gerd | CTD | |
| 14 | Salinity | Sal | Krahmann, Gerd | Guildline autosal salinometer | ||
| 15 | Oxygen | O2 | µmol/kg | Krahmann, Gerd | Titration, Winkler | |
| 16 | Phosphate | [PO4]3- | µmol/l | Subramaniam, Ajit | ||
| 17 | Silicate | Si(OH)4 | µmol/l | Subramaniam, Ajit | ||
| 18 | Nitrite | [NO2]- | µmol/l | Subramaniam, Ajit | ||
| 19 | Nitrate | [NO3]- | µmol/l | Subramaniam, Ajit | ||
| 20 | Quality flag | QF | Subramaniam, Ajit |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
12840 data points
Download Data
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