*Steven C Clemens¹, Masanobu Yamamoto², Sarah McGrath¹, Kaustubh Thirumalai³, Yongsong Huang¹, Kerr Katrina ⁴, Richey Julie ⁵, Rosenthal Yair⁶ (1.Brown University, 2.Hokkaido University, 3.University of Arizona, 4.Open University, 5.USGS, 6.Rutgers University)