De Menocal spent much of his early career at
Lamont–Doherty Earth Observatory of
Columbia University, where he was Thomas Alva Edison/Con Edison Professor and founding director of the
Center for Climate and Life. De Menocal began working at Columbia University in 1986 as a graduate research assistant at Lamont–Doherty Earth Observatory. He was appointed dean of science in the Faculty of Arts and Sciences at Columbia in 2016. De Menocal frequently appears in the media and talks about climate change with the public.
Research De Menocal uses geochemical analyses of marine sediments to investigate past changes in ocean circulation and terrestrial climates. His goal is to understand how and why past climates have changed, with a specific interest in placing contemporary climate change trends within the context of climate changes during the prehistoric past. He has participated in 12 oceanographic research cruises and, in 2001, was on one of the last research cruises off the coast of northeast Africa before the region was declared off limits to scientists due to the threat posed by pirates. == Awards ==