New GEOTRACES Science Highlight! 🌊 Contrasting organic carbon remineralisation rates revealed by particulate excess barium in the North Pcific and South China Sea www.geotraces.org/contrasting-... Paper first author: Yi Yuan, Xiamen University @scor-int.bsky.social #OceanSciences

✨New GEOTRACES Science Highlight! 🌊✨ Sedimentary controls on seawater nickel distributions and nickel isotope compositions: a two steps study www.geotraces.org/sedimentary-... Paper first author: Lena Chen University of Leeds @scor-int.bsky.social #OceanScience #nickel @unoceandecade.bsky.social

New GEOTRACES Science Highlight! 🌊 23 million years of productivity reconstructed in the Central Pacific Ocean using past and modern proxies www.geotraces.org/23-myr-of-pr... Paper first author: Yongzhi Chu, Shanghai Jiao Tong University @unoceandecade.bsky.social @scor-int.bsky.social

New GEOTRACES Science Highlight! 23 million years of productivity reconstructed in the Central Pacific Ocean using past and modern proxies www.geotraces.org/23-myr-of-pr... Paper first author: Yongzhi Chu Shanghai Jiao Tong University #OceanScience @scor-int.bsky.social @unoceandecade.bsky.social

New GEOTRACES Science Highlight! 🌊 Lead isotopes reveal that hydrothermal variability is driven by Sea‐Level change and transient magmatism www.geotraces.org/lead-isotope... Paper first author: Sayantan De, CSIR-NIO, India @scor-int.bsky.social #OceanScience #TraceElements #MarineScience #isotopes

The 2025 GEOTRACES Summer School was a success! 🌊 A sincere thank-you to all organisers, lecturers & participants! 📅 17–21 Nov 2025 | 📍 Cape Town, SA geotraces-2025.sciencesconf.org Sponsors @cnrs.fr @scor-int.bsky.social @campusfrance.bsky.social @FranceInSouthAfrica #EarlyCareers 📽️ S. Fietz

New GEOTRACES Science Highlight! 🌊 Long-range transport of iron via the #Agulhas Current and counter-current: a boon for the phytoplankton www.geotraces.org/long-range-t... Paper first authors: Eva Bucciarelli & Pierrick Penven, LEMAR #oceanscience #traceelements @scor-int.bsky.social

Missed the GEOTRACES Intermediate Data Product 2025 launch webinar? 🌊 The full event and individual talks are now available to watch: 👉 www.geotraces.org/launch-of-ge... #IDP2025 #GEOTRACESDataProduct #TraceElements #marinescience #OceanScience @scor-int.bsky.social @unoceandecade.bsky.social

The GEOTRACES IDP2025 had a fantastic launch during the Summer School in Cape Town! 🌊 If you missed it, don’t worry—join us tomorrow, 25 November, from 05:00 to 06:30 UTC. 👇👇 www.geotraces.org/launch-of-ge... @scor-int.bsky.social @unoceandecade.bsky.social #OceanData #OceanScience #IDP2025

New! GEOTRACES Data Product 2025-Now available! 🌊 Hydrographic and marine biogeochemical data from 123 cruises covering the global ocean *Bulk download bodc.ac.uk/geotraces/data/dp/ *Data subsetting geotraces.webodv.awi.de *Data analysis, visualisation explore.webodv.awi.de *Atlas egeotraces.org

TODAY!!!

✨ New GEOTRACES Science Highlight! 🌊 Hydrothermal activity detected above the ultra-slow South West Indian Ridge, using a multi-proxy approach 👉 www.geotraces.org/hydrothermal... Paper first author: Corentin Baudet, LEMAR @scor-int.bsky.social @unoceandecade.bsky.social ndecade.bsky.social

New Job Opportunity! 🌊 Assistant Professor, Ocean Biogeochemical Modeling, University of Hawai'i at Manoa, USA www.geotraces.org/assistant-pr... #sciencejobs

🌊 The GEOTRACES Summer School has started! 📅 17–21 Nov 2025 - Cape Town, South Africa 🔗 geotraces-2025.sciencesconf.org Training 36 students in marine biogeochemistry of trace elements & isotopes Thanks @cnrs.fr @scor-int.bsky.social #EarlyCareers #summerschool #marinescience #oceanscience

✨New GEOTRACES Science Highlight! 🌊 Assessment of the Solomon Sea’s dissolved iron contribution to the Equatorial Under Current 👉 www.geotraces.org/solomon-seas... Paper first author: Geraldine Sarthou, LEMAR, France @scor-int.bsky.social @unoceandecade.bsky.social #OceanScience #MarineScience

🌟New GEOTRACES Science Highlight! 🌊 To Ba or not to Ba: Evaluating water column excess particulate barium as a proxy for water column respiration 👉 www.geotraces.org/to-ba-or-not... Paper first author: Shaily Rahman @colorado.edu #OceanScience #MarineScience #biogeochemistry @scor-int.bsky.social

✨New GEOTRACES Science Highlight! ✨ 🌊 Major controls on the fate of dissolved manganese in the northeastern Indian Ocean www.geotraces.org/major-contro... Paper first author: Nirmalya Malla, CSIR-NIO #OceanSciences #MarineSciences #geochemistry @scor-int.bsky.social @unoceandecade.bsky.social

Congratulations to the whole team! 🌊

very happy to share that EXPAND has been endorsed by @geotraces.bsky.social as a Process Study with code GIpr14 www.geotraces.org/cruises/ @noc.ac.uk @ird-fr.bsky.social @oceanbridges.bsky.social

New GEOTRACES Science Highlight! 🌊 An original approach to assess the particulate trace metal concentrations in seawater geotraces.org/an-original-... Paper first author: Yoshiki Sohrin Kyoto University #OceanScience #MarineScience #Biogeochemistry @scor-int.bsky.social @unoceandecade.bsky.social

🌟 New GEOTRACES Science Highlight! 🌟 🌊 Constraining aerosol deposition over the global ocean by the cosmogenic beryllium-7 www.geotraces.org/by-the-cosmo... Paper first author: Yipeng He @whoi.edu #OceanScience #biogeochemistry #MarineScience @scor-int.bsky.social @unoceandecade.bsky.social

🌊 Postdoc Opportunity: Ocean Biogeochemical Modelling Alessandro Tagliabue at the University of Liverpool is hiring a 3-year Postdoctoral Research Associate @altagliabue.bsky.social 🔗Details & apply www.jobs.ac.uk/job/DPG117/p... #Postdoc #Oceanography #Biogeochemistry #AcademicJobs #ScienceJobs

🚨#JobAlert Are you currently a #student living in Germany and looking for a part-time & remote job? This opportunity is waiting for you! #EGU are looking for a Community Development Assistant work-student to join their communications team! 📅Apply by 24 October 2025. Learn more here: egu.eu/9Y1PZ8

🚨 Register now! Launch of GEOTRACES Intermediate Data Product 2025! 🌊 🎥 Join our release webinars: 20 Nov 13:15 UTC | 25 Nov 05:00 UTC 📝 Register: forms.gle/H4bMQ6PgjtQR... Discover a rich collection of hydrographic and marine geochemical data! @scor-int.bsky.social @unoceandecade.bsky.social

🌟New GEOTRACES Science Highlight! 🌟 🌊 Oceanic lead concentrations and isotopes mapped using explainable machine learning www.geotraces.org/oceanic-lead... Paper first author: Arianna Olivelli @scor-int.bsky.social @unoceandecade.bsky.social #OceanScience #geochemistry #machinelearning

New Student Opportunity! 🌊 Doctoral Researcher in the assessment of changing trace metal fluxes in the Central and Eastern Arctic Ocean, Technical University of Braunschweig, Germany geotraces.org/doctoral-res... #PhDposition #ScienceJobs

🌟New GEOTRACES Science Highlight!🌟 Dissolved nickel sources: transformation and sinks in the Arabian Sea 🌊 www.geotraces.org/dissolved-ni... Paper first author: Nirmalya Malla, CSIR-NIO #MarineScience #OceanScience #geochemistry #biogeochemistry @scor-int.bsky.social

🌊 More images from Otto Fiord which is above 80 N on the west side of Ellesmere Island, Nunavut 🇨🇦 in the Arctic. Sofie Ohrling is heading out from the icebreaker on a zodiac to sample near the glacier front and nearshore for trace elements @geotraces.bsky.social @uvicscience.bsky.social

🌊 PhD Opportunity in Marine Data Science! Become a doctoral researcher in the project AI-queous: AI-derived thermodynamic parameters for aqueous modelling at GEOMAR, Germany, @geomarkiel.bsky.social Apply here 👉 www.geotraces.org/doctoral-res... #PhD #OceanScience #ScienceJobs

New GEOTRACES Science Highlight! 🌊 Linking cadmium cycling to phosphate dynamics in the Indian Ocean: Evidence from GEOTRACES transects www.geotraces.org/linking-cadm... Paper first author: Tapas Kumar Mishra, CSIR-NIO @scor-int.bsky.social @unoceandecade.bsky.social #OceanScience #geochemistry

🌊🧪 Thank you to Véronique Rochefort of Amundsen Science for this Passages podcast about my group's work in the #Arctic Ocean to understanding trace element and isotope biogeochemistry under a changing #climate. open.spotify.com/episode/4ozD... @uvicscience.bsky.social @geotraces.bsky.social

New GEOTRACES Science Highlight! 🌊 New software enables global ocean biogeochemical modeling in Python Read it here: www.geotraces.org/new-software... Paper first author: Samar Kathiwala, Waseda University #OceanScience #OceanResearch @scor-int.bsky.social

New Student Opportunity! 🌊 College of Fisheries and Ocean Sciences @UAF_CFOS seeks 12 PhD students for EMERGE Alaska (NSF-funded) starting May/Aug 2026. Apply by Jan 15, 2026 🔗 Details: www.uaf.edu/cfos/academi... #PhD #OceanScience #MarineScience @scor-int.bsky.social

🌊✨ New GEOTRACES Science Highlight! ✨ 🌊 Aerosol dissolution and iron isotope fractionation during atmospheric transport 👉 www.geotraces.org/aerosols-and... Paper first author: Capucine Camin, Université de Toulouse @scor-int.bsky.social #oceanscience #marinescience #Biogeochemistry

New GEOTRACES Science Highlight! 🌊 Paradoxical influence of hydrothermal methylmercury on local ecosystems www.geotraces.org/paradoxical-... Paper first author: Natalia Torres-Rodírguez @mioceanologie.bsky.social #OceanScience @scor-int.bsky.social #MarineScience #Methylmercury #biogeochemistry

We are excited to announce two GEOTRACES sessions at Ocean Sciences #OSM2026 🌊 (22–27 Feb, Glasgow 🇬🇧)! 📌 OB020: Multi-tracer approaches 📌 CB002: Coastal & Island Mass Effects 📅 Submit your abstract by 20 Aug 2025, 23:59 EDT! 🔗 www.agu.org/Ocean-Scienc... @scor-int.bsky.social #OceanScience

Early Career Scientist at #Goldschmidt2025?🌊 Join the GEOTRACES ECS Mixer! 🍕 Free pizza & drinks 🗓 Tue 8 July | 🕖 19:45 📍 U Olmeru (5 min walk) maps.app.goo.gl/5w6ibKqC8q64... Sign up 👇https://docs.google.com/forms/d/e/1FAIpQLSeWXAsmdWIWU99S1WH-Anl4RNSnfxhrgoiOmEcmTSiWT77awA/viewform

New GEOTRACES Science Highlight!🌊 Rare Earth and neodymium isotope cycles in the abyssal Pacific Ocean are shaking up the paradigm established for particle reactive tracers www.geotraces.org/rare-earth-a... Paper first author: Jianghui Du, Peking University @scor-int.bsky.social #oceanscience

Cool paper on MnOxides and the role of the seafloor in marine trace element cycling @geotraces.bsky.social 🌊 www.nature.com/articles/s41...

🌊 Now entering the Saugenay Fiord for first work this morning. We will test a new wire guide for deploying our specialized @geotraces.bsky.social trace element clean rosette/CTD system. It is designed to return physical data like temperature and salinity & uncontaminated seawater samples

✨ Less than ONE WEEK until the DEADLINE! ✨ 🌊

✨🌊New GEOTRACES Science Highlight! 🌊✨ Anthropogenic iron impact on the surface productivity in the Pacific Transition Zone www.geotraces.org/anthropogeni... Paper first author: Nicholas J. Hawco, University of Hawaii at Manoa #MarineScience #oceanscience #Biogeochemistry @scor-int.bsky.social

🌊 GEOTRACES will be at the One Ocean Science Congress #OOSC in Nice! We’ll be highlighting 20 years of international collaborative research in marine geochemistry — visit our poster! 📍 Poster OOS2025-1317 | 3–6 June 2025 🔗 doi.org/10.5194/oos2... @scor-int.bsky.social @unoceandecade.bsky.social

🌊 Pre-registration is open for GEOTRACES Summer School 2025! 📅 17–21 Nov | 📍 Cape Town 🎓 Training in marine biogeochemistry of trace elements & isotopes for 36 students. Apply by 30 June 2025 👉 geotraces-2025.sciencesconf.org #MarineScience #Biogeochemistry #SummerSchool @scor-int.bsky.social

New Job Opportunity! 🌊 Postdoctoral Research Opportunity in Arctic Trace Metal Biogeochemistry, LEMAR/IUEM, Brest, France www.geotraces.org/postdoc-2025... #sciencejobs #Postdoc #biogeochemistry

🌊 ✨ Call for Applications Now Open ✨ 🌊 The GEOTRACES Early Career Scientists Committee (ECS) is now accepting applications for new members! 🗓️ Application deadline: 15 June 2025 Learn more and apply👇 www.geotraces.org/2025-ecs/ Share this! 📢 😊 #EarlyCareerResearchers @scor-int.bsky.social

New GEOTRACES Science Highlight! 🌊 Coupling copper and neodymium data highlights the importance of the margin sources for the copper oceanic cycle www.geotraces.org/coupling-cop... Paper first author: Nolwenn Lemaitre #OceanScience #geochemistry @scor-int.bsky.social @unoceandecade.bsky.social

New Job Opportunity! 🌊 Postdoc in rare earth elements and Nd isotope cycling in the Antarctic, University of Minnesota–Twin Cities, USA www.geotraces.org/postdoc-in-r... #sciencejobs #postdoc #Job #geochemistry

Learn about the GEOTRACES success story in sharing open access marine biogeochemical data in this webinar: Boosting Ocean Data Sharing in the UN Ocean Decade 🗓 May 7th, 2025 🕓 4 PM CET / 10 AM ET 🔗 Registration is now open: lnkd.in/ebTXqtD5 🌊 @unoceandecade.bsky.social @scor-int.bsky.social

New job opportunity! 🌊 Lab Facility Manager in biogeochemical trace element analytics, Eawag, Switzerland www.geotraces.org/lab-facility... Apply before 31 May 2025 #sciencejobs #biogeochemistry