Comer Fellow Daniel Sigman elected to the National Academy of Sciences

Daniel Sigman is Princeton’s Dusenbury Professor of Geological and Geophysical Sciences.

Sigman’s research team studies the cycles of biologically important elements and their interaction with changing environmental conditions through the course of Earth history. He also studies the oscillations into and out of ice ages over the last two million years. His team is building the case that biogeochemical changes in the polar ocean are responsible for the large swings in atmospheric carbon dioxide concentration between ice ages and interglacial periods, amplifying glacial cycles and converting ice ages into global phenomena. Sigman received a B.S. from Stanford University in 1991 and a Ph.D. from the Massachusetts Institute of Technology/Woods Hole Oceanographic Joint Program in Oceanography in 1997.