https://doi.pangaea.de/10.1594/PANGAEA.995338Chen, GuanghuiGuanghuiChenRapp, InsaInsaRapp0000-0001-9542-3644GEOMAR - Helmholtz Centre for Ocean Research KielSieber, MatthiasMatthiasSieberAchterberg, Eric PieterEric PieterAchterberg0000-0002-3061-2767GEOMAR - Helmholtz Centre for Ocean Research KielConway, Tim MTim MConway0000-0002-3069-9786Gledhill, MarthaMarthaGledhill0000-0003-3859-2112GEOMAR - Helmholtz Centre for Ocean Research KielHopwood, Mark JamesMark JamesHopwood0000-0002-9743-079XXie, Ruifang CRuifang CXie0000-0002-6628-9236PANGAEA2026iron isotopesiron shuttleOxygen minimum zoneEvent labelStation labelDEPTH, waterSample code/labelLATITUDELONGITUDESalinityTemperature, waterOxygenDensity, potential anomalyIronδ56Feδ56Fe, standard deviationIron 2+AluminiumNitriteIron/Aluminium ratioCTD/RosetteM136M137M138Meteor (1986)Climate - Biogeochemistry Interactions in the Tropical Ocean (SFB754)2017-04-21T18:38:00/2017-06-16T11:05:00Dataset1442 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalData access is restricted (moratorium, sensitive data, license constraints)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.-78.24-76.66-14.31-12.31German Research Foundationhttps://doi.org/10.13039/50110000165927542298Climate - Biogeochemistry Interactions in the Tropical Ocean