|Professor Maureen Raymo is a paleo-climatologist and marine geologist who works at the Lamont-Doherty Earth Observatory of Columbia University where she is also Director of the Lamont Deep Sea Sample Repository. She studies the history and causes of climate change in Earth's past. In 1988 she proposed the uplift-weathering hypothesis that tied global cooling and the onset of polar glaciation in the late Cenozoic to a drawdown in atmospheric CO2 caused by the uplift of the Himalayas and Tibetan Plateau. In addition to publishing fundamental work on the stratigraphy and chronology of the late Neogene, Professor Raymo has also proposed hypotheses explaining why ice sheets appear to wax and wane primarily at the Earth's obliquity frequency over much of the Plio-Pleistocene. In 2002, she was awarded the Robert L. and Bettie P. Cody Award in Ocean Sciences from the Scripps Institution of Oceanography. She is a fellow of both the American Geophysical Union and the American Association for the Advancement of Science.
Accurate estimates of past sea levels are necessary to constrain Greenland and Antarctic ice sheet stability in a warmer world. As scientists we use climate models to assess likely future warming scenarios and thus gauge what a safe level of greenhouse gases may be. However, results of climate models can vary greatly between groups. To address the problem of knowing which models are best, the scientific community puts significant effort into calibrating models against known past climate changes. The aim of Professor Raymo's Fulbright-Nehru research project is to identify and date paleo-shoreline features in the circum-Indian Ocean region with goal of providing firm estimates of past ice volume.