TY - RPRT TI - Modeling Extreme 'Carrington-Type' Space Weather Events Using Three-dimensional Global MHD Simulations AU - Chigomezyo M Ngwira AU - Antti Pulkkinen AU - Maria M Kuznetsova AU - Alex Glocer PY - 2014 UR - https://ntrs.nasa.gov/citations/20150007917 ID - 20150007917 ER -