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About

Susan Wijffels is a world-renowned physical oceanographer whose work has fundamentally reshaped our understanding of the global ocean’s role in the climate system. Her primary research focuses on ocean circulation, climate variability, and the design of large-scale observing systems. She is best known as a visionary leader of the **Argo program**, an international array of nearly 4,000 autonomous profiling floats that has revolutionized oceanography. Her landmark paper, *“Argo—Two Decades: Global Oceanography, Revolutionized”* (125 citations), details how this network provides continuous, real-time measurements of temperature and salinity from the surface to 2,000 meters depth. Wijffels has been instrumental in advocating for the program’s expansion into **OneArgo by 2030**, a critical initiative to extend coverage into the deep ocean, polar regions, and biogeochemical zones, as outlined in her 2025 paper. Her recent work also resolves fine-scale ocean circulation features using a multi-platform observational approach, creating a new high-resolution hydrographic atlas. With thousands of citations and a legacy of open-data leadership, Wijffels has enabled scientists worldwide to track ocean warming, sea-level rise, and changing currents, providing the foundational data needed to understand and mitigate anthropogenic climate change.