A COMPREHENSIVE SCHEDULE FOR TASK COMPLETION WILL BE DEVELOPED AT THE BEGINNING OF THE PROJECT AND DISCUSSED SOON AFTER THE PROJECT BEGINS AT THE FALL 2017 MEETING OF THE AGU. THE RESEARCH TEAM IS SPREAD OVER A LARGE GEOGRAPHIC AREA BUT WILL MEET REGULARLY VIA TELECONS AND ONLINE COLLABORATION TOOLS. FILES AND NECESSARY READERS WILL BE SHARED AMONG THE TEAM. WE RECOGNIZE THAT SCIENTIFIC RESEARCH IS A COLLABORATIVE EFFORT AND THAT THIS SCHEDULE IS APPROXIMATE. DR. YINGDONG JIA WILL BE RESPONSIBLE FOR USING A SOPHISTICATED MULTI FLUID PLASMA MODEL OF A COMETARY MAGNETOSPHERE WHICH CAPTURES THE LOCAL INTERACTION OF THE COMET WITH THE SUN'S MAGNETIC FIELD TO CALCULATE THE EVOLUTION OF THE EVAPORATED MATERIAL (INCLUDING MINOR IONS WITH ALL CHARGE STATES). THE RESEARCH WORK HAS BEEN DIVIDED INTO TASKS WHOSE COMPLETION REPRESENTS THE MILESTONES OF THE PROJECT. 1. ADAPT CORONAL MODEL AS THE INPUT BOUNDARY CONDITION FOR THE LOCAL COMET PLASMA MODEL. ADAPT THE NEUTRAL DENSITY PROFILE FROM THE ABLATION MODEL AS THE BACKGROUND IONIZATION SOURCE TO THE LOCAL COMET PLASMA MODEL. 2. CREATE STEADY-STATE MODELS OF COMETARY PLASMA IN THE CORONA. 3. CREATE TIME-DEPENDENT MODELS OF COMET EVOLUTION IN THE CORONA. 4. PROJECT COMETARY IONS TO 1 AU ALONG THEIR PERIHELION PASSES 5. COMPARE EUV IMAGES WITH THE MODELED RADIANCES TO DETERMINE BEST PARAMETERS FOR COMET AND ABLATION MODELS. THE TASKS LISTED ABOVE WILL BE REPEATED SEVERAL TIMES TO FIND THE OPTIMAL SET OF PARAMETERS THAT CAN FIT THE OBSERVATION. THEN WE CAN USE THESE PARAMETERS TO DETERMINE THE CONDITION OF THE LOW CORONA DURING THE SUN-GRAZING COMET EVENT. DURING THE 3 YEAR PERIOD OF THE PROPOSAL THE RESULTS WILL BE PUBLISHED AS JOURNAL ARTICLES AND PRESENTED AT MEETINGS. THE RESULTS WILL ALSO BE MADE AVAILABLE TO THE PUBLIC AS STATED IN OUR DATA MANAGEMENT PLAN.