Tianfu Xu is a Career Staff Scientist at the Lawrence Berkeley National Laboratory (LBNL), which he joined in 1996 initially as post-doctoral fellow. He received a bachelor’s degree in 1984 from Jilin University of China, an M.S. degree in 1993 from Delft University of Technology of The Netherlands, and a Ph.D. in 1996 from University of La Coruña, Spain. For the last 16 years, Tianfu has been working on developing new approaches to modeling multiphase non-isothermal fluid flow and reactive transport in unsaturated and saturated porous media and fractured rock systems. He is the chief developer of LBNL’s multi-phase non-isothermal reactive flow and chemical transport simulator TOUGHREACT. The program is among the most frequently requested codes in the library of the Department of Energy’s Software Center, and is widely used nationally and internationally for CO2 geological sequestration, geothermal energy development, nuclear waste disposal, environmental remediation, and increasingly for petroleum applications. Tianfu has authored and co-authored about 40 peer-reviewed journal papers. His papers have been cited by other researchers more than 360 times (SCI citation).