Dr. Nicholas Graham is currently a visiting scientist at the Hydrologic Research Center. He obtained his Bachelors degree from the Department of Geography at the University of California, Santa Barbara in 1970. After serving with the U.S. Army from 1970-1973, he joined North American Weather Consultants, where he served as a forecaster and as an air quality climatologist, participating in the design, field work and analysis for many air quality tracer studies in the western U.S. and Canada.Â Dr. Graham returned to UC Santa Barbara in 1980, obtaining his Masters in 1982 and Ph.D. in 1986. His Ph.D. dissertation concerned large-scale patterns of ocean temperature variability in the Pacific and featured the design and verification of sophisticated physically-based statistical models for the prediction of El Nino Previously, Dr. Graham directed the Climate Forecast Division of the International Research Institute for Climate Prediction and guided development of its climate forecasting capabilities. While at HRC, Dr. Graham is performing paleo-hydrological research related to Holocene variability of African lakes, principally the Rift Valley lakes of central east Africa and Megalake Chad.