Dr. Hanli Liu is a senior scientist at the High Altitude Observatory, National Center for Atmospheric Research. He received a B.S. in Fluid Mechanics from the University of Science and Technology of China, and a Ph.D. in Atmospheric and Space Physics from the University of Michigan. He came to the Observatory in 1997 as a postdoctoral researcher, and joined the scientific staff in 1999. His research includes: theoretical, numerical, and interpretive studies of the dynamics, structure, and variability of the Earth's middle and upper atmosphere; coupling of different atmospheric regions on global and regional scales, including impacts of lower atmospheric forcing on space weather; atmospheric waves and geophysical turbulence. He is leading the thermosphere/ionosphere extension of the Whole Atmosphere Community Climate Model (WACCM-X).