Chen, Guanghui; Rapp, Insa; Sieber, Matthias; Achterberg, Eric Pieter; Conway, Tim M; Gledhill, Martha; Hopwood, Mark James; Xie, Ruifang C (2026): Dissolved and particulate Fe concentrations and Fe isotope compositions from the Peruvian upwelling zone (M136 to M138) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995338 (DOI registration in progress)
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Published: 2026-06-12
Abstract:
Dissolved and particulate Fe concentrations and Fe isotopic compositions (δ56Fe) were determined from two shelf-slope transects at 12 degree S and 14 degree S in the Peruvian upwelling zone. Samples were collected during cruises M136, M137 and M138 in April and June 2017 using trace metal-clean GO-FLO bottles (profiles) and a towed-fish sampler (surface samples). Dissolved samples were filtered through 0.2 μm polyethersulfone (PES) filters (profiles) or AcropackTM capsule filters (Pall®; 0.8/0.2 μm; surface samples) into acid-cleaned low-density polyethylene (LDPE) bottles. Particulate samples were collected on the PES filters. These data are used to evaluate the partitioning of Ba isotopes between the dissolved and particulate phases.
Related to:
Chen, Guanghui; Rapp, Insa; Sieber, Matthias; Achterberg, Eric Pieter; Conway, Tim M; Gledhill, Martha; Hopwood, Mark James; Xie, Ruifang C (submitted): Temporal variability in offshore Fe fluxes in the Peruvian oxygen minimum zone across an El Niño termination.
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 27542298: Climate - Biogeochemistry Interactions in the Tropical Ocean
Coverage:
Median Latitude: -12.946838 * Median Longitude: -77.562821 * South-bound Latitude: -14.310000 * West-bound Longitude: -78.240000 * North-bound Latitude: -12.310000 * East-bound Longitude: -76.660000
Date/Time Start: 2017-04-21T18:38:00 * Date/Time End: 2017-06-16T11:05:00
Minimum DEPTH, water: 2.00 m * Maximum DEPTH, water: 2021.88 m
Event(s):
M136_458-1 (CTD 056) * Latitude: -12.452330 * Longitude: -77.493830 * Date/Time: 2017-04-21T18:38:00 * Elevation: -407.0 m * Campaign: M136 (SFB754) * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M136_461-1 (CTD 057) * Latitude: -12.522500 * Longitude: -77.583170 * Date/Time: 2017-04-21T23:48:00 * Elevation: -749.0 m * Campaign: M136 (SFB754) * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M136_463-1 (CTD 058) * Latitude: -12.722000 * Longitude: -77.850170 * Date/Time: 2017-04-22T04:48:00 * Elevation: -2030.0 m * Campaign: M136 (SFB754) * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Chen, Guanghui | |||
| 2 | Station label | Station | Chen, Guanghui | |||
| 3 | DEPTH, water | Depth water | m | Chen, Guanghui | Geocode | |
| 4 | Sample code/label | Sample label | Chen, Guanghui | Niskin | ||
| 5 | LATITUDE | Latitude | Chen, Guanghui | Geocode | ||
| 6 | LONGITUDE | Longitude | Chen, Guanghui | Geocode | ||
| 7 | Salinity | Sal | Chen, Guanghui | |||
| 8 | Temperature, water | Temp | °C | Chen, Guanghui | ||
| 9 | Oxygen | O2 | µmol/kg | Chen, Guanghui | ||
| 10 | Density, potential anomaly | Dens pot anomaly | kg/m3 | Chen, Guanghui | ||
| 11 | Iron | Fe | nmol/kg | Chen, Guanghui | dissolved | |
| 12 | Iron | Fe | nmol/kg | Chen, Guanghui | particulate | |
| 13 | δ56Fe | δ56Fe | ‰ | Chen, Guanghui | dissolved | |
| 14 | δ56Fe, standard deviation | δ56Fe std dev | ± | Chen, Guanghui | 2SE | |
| 15 | δ56Fe | δ56Fe | ‰ | Chen, Guanghui | particulate | |
| 16 | δ56Fe, standard deviation | δ56Fe std dev | ± | Chen, Guanghui | 2SE | |
| 17 | Iron 2+ | Fe2+ | nmol/kg | Chen, Guanghui | ||
| 18 | Aluminium | Al | nmol/kg | Chen, Guanghui | particulate | |
| 19 | Nitrite | [NO2]- | µmol/kg | Chen, Guanghui | ||
| 20 | Iron/Aluminium ratio | Fe/Al | Chen, Guanghui | pFe/pAl |
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:
1442 data points