Ionospheric- Thermospheric State Estimation With Neutral Wind Data Assimilation S. Datta-Barua, Illinois Institute of Technology D. Miladinovich , Illinois Institute of Technology G. Bust, John Hopkins University Applied Physics Laboratory J. Makela, University of Illinois at Urbana-Champaign URSI AT-RASC May 18 th – 22 nd 2015 Gran Canaria