Dennis A. HansellDennis Hansell has conducted research on the biogeochemistry of major elements in the ocean for more than 30 years. His analyses have largely focused on data collected in the conduct of international projects addressing hydrographic and biogeochemica surveys of the global ocean. Questions of particular interest revolve around the role of dissolved organic matter (DOM) in the cycling of marine carbon, such as the accumulation of DOM in the surface ocean, its export to great depth with overturning circulation, its fate upon export, and its introduction to the deep ocean via sinking biogenic particles. This work has been done in all the major ocean basins; thus, the research products lend themselves to furthering understanding of the ocean as a global system. Hansell served as co-editor of the first two editions of this book. Read More Read Less