Xiaoxu Tian is a doctoral student and Research Graduate Assistant II at the University of Maryland in the Department of Atmospheric and Oceanic Sciences. He earned both his B.S. and M.S. degrees in Meteorology from Florida State University. Xiaoxu is currently advised and supported by Dr. Xiaolei Zou. His dissertation research will be on developing a simplified 4D-Var axisymmetric hurricane model to assimilate microwave radiometer and microwave temperature sounder data in a vortex initialization for hurricane forecasts.