Oceanography The Official Magazine of
The Oceanography Society

Volume 37 | Number 2 | June 2024

Twenty Years of GEOTRACES: An International Study of the Marine Biogeochemical Cycles of Trace Elements and Isotopes

On the Cover: Deployment of the "trace metal clean" rosette at 78°N from USCGC Healy as part of the 2015 US GEOTRACES GN01 cruise to the Arctic Ocean. Water from this cast yielded data for key biogeochemical parameters such as iron, aluminum, radium, metal isotopes, and major nutrients. Photo credit: Katlin Bowman Adamczyk, US Geological Survey
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Volume 37 Issue 2

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Welcome to the Oceanography special issue on Twenty Years of GEOTRACES: An International Study of the Marine Biogeochemical Cycles of Trace Elements and Isotopes. Scroll down this page to view the full set of articles or jump to the open access flipbook to page through the a the full issue. 


FROM THE GUEST EDITORS • Introduction to the Special Issue
By Tim M. Conway, Jessica N. Fitzsimmons, Rob Middag , Taryn L. Noble, and Hélène Planquette

PERSPECTIVE • Intercalibration: A Cornerstone of the Success of the GEOTRACES Program
By Ana Aguilar-Islas, Hélène Planquette, Maeve C. Lohan, Walter Geibert, and Gregory Cutter

SPOTLIGHT • Three-Minute Videos to Learn About Marine Geochemistry
By Elena Masferrer Dodas, Catherine Jeandel, and Adrian Artis

PERSPECTIVE • GEOTRACES: Ironing Out the Details of the Oceanic Iron Sources?
By Tim M. Conway, Rob Middag, and Reiner Schlitzer

Advances in Understanding the Marine Nitrogen Cycle in the GEOTRACES Era
By Karen L. Casciotti, Tanya A. Marshall, Sarah E. Fawcett, and Angela N. Knapp

PERSPECTIVE • GEOTRACES: Fifteen Years of Progress in Marine Aerosol Research
By Clifton S. Buck, Susanne Fietz, Douglas S. Hamilton, Tung-Yuan Ho, Morgane M.G. Perron, and Rachel U. Shelley

New Insights into the Organic Complexation of Bioactive Trace Metals in the Global Ocean from the GEOTRACES Era
By Hannah Whitby, Jiwoon Park, Yeala Shaked, Rene M. Boiteau, Kristen N. Buck, and Randelle M. Bundy

PERSPECTIVE • The Dawn of the BioGeoSCAPES Program: Ocean Metabolism and Nutrient Cycles on a Changing Planet
By Mak A. Saito, Harriet Alexander, Heather M. Benway, Philip W. Boyd, Martha Gledhill, Elizabeth B. Kujawinski, Naomi M. Levine, Mai Maheigan, Adrian Marchetti, Ingrid Obernosterer, Alyson E. Santoro, Dalin Shi, Koji Suzuki, Alessandro Tagliabue, Benjamin S. Twining, and Maria T. Maldonado


QUARTERDECK • A Needle in the Haystack
By Claudia Benitez-Nelson

DIY OCEANOGRAPHY • The OpenCTD: A Low-Cost, Open-Source CTD for Collecting Baseline Oceanographic Data in Coastal Waters
By Andrew Thaler, S. Kersey Sturdivant, Russell Y. Neches, and J. Jacob Levenson

TRIBUTE • A Tribute to Richard W. Eppley
By Paul G. Falkowski, ed.

FROM THE TOS JEDI COMMITTEE • In Pursuit of Conference Equity
By Isabel M. Martínez-Farrington, Loraine Martell Bonet, Aixa Alemán-Díaz, H. Justin Ballenger, Dwight Ebanks, Mona Behl, Sarah Kolesar, Sharon Cooper, Corey Garza, Jonathan C. Lewis, M. Brandon Jones, and Lisa White

Special Issue Guest Editors

Tim Conway, University of South Florida
Jessica Fitzsimmons, Texas A&M University
Rob Middag, Royal NIOZ
Taryn Noble, University of Tasmania
Hélène Planquette, University of Brest


Support for production of this special issue was provided by the US National Science Foundation, award OCE-2219888 to Robert Anderson.