Hui Liu is an Associate Research Scientist who joined ESSIC/University of Maryland in October 2017. Before that, he was a Project Scientist at the National Center for Atmospheric Research in Boulder/Colorado from 2003 to 2017 and a Research Associate at Florida State University from 1998 to 2003. His work had focused on improving assimilation of satellite data with NWP, including developments of physics-based quality controls and dynamic errors of radio occultation data, as well as observation operators. Since 2019, he has been working on a NOAA effort to demonstrate impact of space wind lidar observation on improving NOAA global forecast and to develop NOAA next generation of space wind lidar observations. Dr. Liu got his Ph.D. from the Chinese Academy of Sciences in Beijing in 1993 and moved to US. in 1998.