DR. DOWNS PRIMARY ROLE ON THIS PROJECT IS TO TAILOR AND CONDUCT HIGH QUALITY 3D MAG- NETOHYDRODYNAMIC (MHD) SOLUTIONS OF THE GLOBAL SOLAR CORONA FOR SPECIFIC TIME PERIODS OF INTEREST (SUN-GRAZING COMET PERIHELIA). ONCE SUITABLY REALISTIC OBSERVATION-BASED MHD SOLUTIONS ARE DEVELOPED HE WILL SUPPLY MODEL DATA EXTRACTED ALONG COMET TRAJECTORIES TO THE OTHER INVESTIGATORS ON THE PROJECT AND CONSULT WITH THEM ON THE RESULTS. HE WILL ALSO HELP INVESTIGATE THE SOLAR WIND IMPLICATIONS/CONNECTIONS OF COMETARY IONS DEPOSITED ONTO MAGNETIC FIELD LINES LOW IN THE HELIOSPHERE. THE PRIMARY PERIHELION PASSAGES IDENTIFIED IN THE PROJECT ARE C/2011 N3 (SOHO) COMET LOVEJOY (2011) AND COMET 2012 S1 (ISON). BASED ON THE COURSE OF THE PROJECT AND FEEDBACK FROM THE OTHER INVESTIGATORS DR. DOWNS WILL IMPROVE THESE CASES AND/OR GENERATE MHD SOLUTIONS FOR OTHER CASES AS NECESSARY. DR. DOWNS WILL DELIVER ANNUAL REPORTS TO NASA AND DEAN PESNELL DESCRIBING WORK FOR EACH YEAR OF THE PROJECT. DR. DOWNS WILL ALSO LEAD OR ASSIST WITH THE PREPARATION OF SCIENTIFIC MANUSCRIPTS AND/OR PRESENTATIONS AT MEETINGS AS NEEDED DURING THE PROJECT.