Evolution of Surface Water Conditions in the Gulf of California During the Past 2000 years: Implications for the North American Monsoon

John Arthur Barron1, David Bukry1, Jason A Addison2, Mary McGann1, Valerie Schwartz1, John P McGeehin3 and Erin McClymont4, (1)USGS, Menlo Park, CA, United States, (2)USGS, Geology, Minerals, Energy, & Geophysics Science Center, Menlo Park, CA, United States, (3)U.S. Geological Survey, Reston, VA, United States, (4)University of Durham, Durham, United Kingdom