Jorge Sarmiento, the George J. Magee Professor of Geoscience and Geological Engineering, Emeritus, at Princeton University, passed away on May 5. He was a leading figure in climate science, recognized for his extensive research on ocean circulation and its role in the global carbon cycle. His contributions earned him a share of the Nobel Peace Prize in 2007, awarded to the Intergovernmental Panel on Climate Change. Over a career spanning more than 40 years, Sarmiento directed the Atmospheric and Ocean Sciences Program at Princeton, shaping it into a world leader in ocean biogeochemistry. He played a pivotal role in the Joint Global Ocean Flux Studies program and founded the Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) initiative, which deployed autonomous data collectors to study climate impacts in the Southern Ocean. Sarmiento was also a dedicated mentor, influencing countless young scientists through his teaching and guidance. His legacy continues through his students, who carry on his work in oceanography. Sarmiento is survived by his wife, Lucia Acosta, their two children, and a grandson.