Steiner, Zvi; Mutzberg, André; Achterberg, Eric Pieter: Macro nutrient concentrations measured in surface water samples collected during SONNE cruise SO289 from Chile to New Caledonia [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995899 (dataset in review), In: Steiner, Z et al.: Macro nutrient concentrations measured in the South Pacific along SONNE cruise SO289 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995895 (dataset in review)
Abstract:
The concentrations of nitrate, nitrite, soluble reactive phosphorous (SRP) and silicic acid were measured in 119 water samples collected from 23 February to 3 April 2022 using an underway trace metal clean tow-fish during RV Sonne cruise SO289 from Chile to New Caledonia. Containers and caps were rinsed three times with the sample water before the actual sampling. Samples were placed in the fridge immediately after collection (4 °C in dark) in case they could not be immediately analysed. Analysis of macro nutrients was undertaken on board by segmented flow injection analysis using a QUAATRO39 (Seal Analytical) auto-analyser including a XY2-autosampler unit. The system set-up included 4 channels for nitrate + nitrite (TON), silicate, nitrite, and phosphate. The analytical methods followed during the cruise correspond to those described by QuAAtro Applications: Method No. Q-068-05 Rev. 11 for TON, Q-066-05 Rev. 5 for Silicate, Q-070-05 Rev. 6 for Nitrite and Q-064-05 Rev. 8 for Phosphate. Limits of detection were: nitrate (0.020 µmol kg−1), nitrite (0.008 µmol kg−1), and silicic acid (0.096 µmol kg−1). TON (nitrate + nitrite) and SRP were re-analysed using a modified detector set up with 1000 mm flow cells, which provided significantly lower detection limits. These samples were filtered and stored at −20 °C prior to analyses on board with the modified QUAATRO39 (Seal Analytical) auto-analyser. Limits of detection of the nano-nutrient system were: TON (0.005 µmol kg−1) and SRP (0.001 µmol kg−1).
Keyword(s):
Project(s):
Coverage:
Median Latitude: -28.796134 * Median Longitude: -135.525378 * South-bound Latitude: -32.500000 * West-bound Longitude: 172.050000 * North-bound Latitude: 31.430000 * East-bound Longitude: -76.530000
Date/Time Start: 2022-02-26T21:35:00 * Date/Time End: 2022-04-03T15:12:00
Minimum Elevation: -3391.7 m * Maximum Elevation: -112.5 m
Event(s):
SO289_0_Underway-3 * Latitude Start: -33.603980 * Longitude Start: -71.732800 * Latitude End: -25.832970 * Longitude End: 171.998950 * Date/Time Start: 2022-02-23T17:39:00 * Date/Time End: 2022-04-03T21:10:00 * Elevation Start: -112.5 m * Elevation End: -3391.7 m * Location: South Pacific Ocean * Campaign: SO289 (GEOTRACES GP21) * Basis: Sonne_2 * Method/Device: Fish undulating, recording system tow (FISH) * Comment: Towed Trace Metal Clean Fish for trace metal analysis
Comment:
Zero values in the data columns mean below detection limit ( <LOD). See abstract for individual limits of detection.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Steiner, Zvi | |||
| 2 | Station label | Station | Steiner, Zvi | |||
| 3 | DATE/TIME | Date/Time | Steiner, Zvi | Geocode | ||
| 4 | LATITUDE | Latitude | Steiner, Zvi | Geocode | ||
| 5 | LONGITUDE | Longitude | Steiner, Zvi | Geocode | ||
| 6 | Temperature, water | Temp | °C | Steiner, Zvi | ||
| 7 | Nitrate and Nitrite | [NO3]- + [NO2]- | µmol/l | Steiner, Zvi | Total Oxidised Nitrogen | |
| 8 | Phosphate | [PO4]3- | µmol/l | Steiner, Zvi | ||
| 9 | Silicate | Si(OH)4 | µmol/l | Steiner, Zvi |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
630 data points