THE LEADER CENTER FOR SPACE ENVIRONMENTS IS A MODELING-LAB-DATA CENTER OF EXCELLENCE THAT WILL ANSWER THE OVERARCHING QUESTION: HOW DOES THE HIGHLY VARIABLE ENERGY AND MATTER IN THE INNER HELIOSPHERE AFFECT VOLATILE STABILITY PLASMA INTERACTIONS DUST MIGRATION AND SURFACE MICRO-STRUCTURE AT THE MOON AND HOW DOES THE DYNAMIC ENVIRONMENT CHANGE WITH HUMAN PRESENCE?" AS HUMANKIND BEGINS TO COLONIZE THE MOON AND UTILIZE RESOURCES FOUND THERE WE WILL NEED TO BE AWARE OF THE ENVIRONMENTAL CHALLENGES BOTH FOR THE HEALTH OF THE ASTRONAUTS BUT ALSO FOR THE LONG-TERM VIABILITY OF THEIR EQUIPMENT. HAZARDS INCLUDE RADIATION SURFACE CHARGING LUNAR DUST SOLAR WIND AND METEOROIDS. HOWEVER IN ADDITION THE INVERSE PROCESS IS AN IMPORTANT UNKNOWN: THE NATURE AND EXTENT OF HUMAN CONTAMINATION AND DISTURBANCE OF THE LUNAR ENVIRONMENT. IN THE LEADER INTEGRATED TEAM STUDY WE PROPOSE TO TAKE OUR PREVIOUS RESEARCH ONE STEP BEYOND OUR PAST ACCOMPLISHMENTS TO DETERMINE NOT ONLY THE RESPONSE OF THE MOON TO INTERPLANETARY CONDITIONS BUT TO STUDY THE RESPONSE OF THE LUNAR ENVIRONMENT TO HUMAN ACTIVITY. CONVERSELY WE WILL STUDY IN-DEPTH THE EFFECT OF THE LUNAR ENVIRONMENT ON HUMANS AND THEIR EQUIPMENT. GIVEN THAT THERE ARE MANY UNKNOWNS WE HAVE BROKEN UP OUR TASKS INTO FOUR BROAD INTER-CONNECTED THEMES: (1) SPACE ENVIRONMENT-VOLATILE INTERACTIONS (2) PLASMA-SURFACE-OBJECT INTERACTIONS (3) DUST ELECTROSTATICS COHESION TRIBO-ELECTRICITY AND CHEMISTRY AND (4) RADIATION TRANSPORT IN MATERIAL. THESE THEMES IN FACT OVERLAP IN MANY AREAS. FOR EXAMPLE PLASMAS SPUTTER VOLATILE MATERIAL INTO THE EXOSPHERE. THE LUNAR ENVIRONMENT INCLUDES THE SOLAR WIND PLASMA RADIATION AND DUST. GIVEN THAT THESE DRIVERS VARY OVER THE COURSE OF A LUNAR MONTH IN PARTICULAR AS THE MOON TRAVERSES THE EARTH S MAGNETOSPHERE TWO REGIONS WILL BE TARGETED: THE MOON INSIDE AND OUTSIDE OF THE EARTH'S MAGNETOSPHERE RESPECTIVELY. WE PLAN A ROBUST LABORATORY COMPONENT TO OUR STUDY. THE EFFECT OF RADIATION ON LUNAR SIMULANTS AND LUNAR SAMPLES WILL BE UNDERTAKEN TO DETERMINE SPACE WEATHERING EFFECTS INCLUDING HOW WATER CAN BE PRODUCED BY PROTON BOMBARDMENT. THE COHESIVE AND ELECTRICAL PROPERTIES OF LUNAR DUST WILL BE STUDIED WITH APPLICATION TO SPACESUIT MATERIALS AND INSTRUMENTS THAT WILL BE PLACED ON THE MOON. TO PERFORM THIS INTEGRATION ACROSS THEMES AND ACROSS THE TEAM LEADER WILL HOLD A SET OF FOCUSED STUDIES CALLED LEADER EXTREME ENVIRONMENT PROJECTS' (LEEP) THAT WILL EXAMINE THE ENVIRONMENT IN AN INTEGRATED WAY. THE FIRST LEEP STUDY WILL FOCUS ON THE EFFECTS OF A BROAD RANGE OF LANDED MISSIONS ON THE FRAGILE LUNAR ENVIRONMENT. WE WILL STUDY THE EFFECT OF HUMAN ACTIVITY ON THE EXOSPHERE AND THE PLASMA ENVIRONMENT AND THE EFFECT OF INCREASED DUST ON HUMAN SYSTEMS. THE RADIATION TEAM WILL DETERMINE THE RADIATION ENVIRONMENT LIMITATIONS ON THE LENGTH OF TIME ASTRONAUTS CAN REMAIN ON THE LUNAR SURFACE AND AT THE LUNAR GATEWAY AND THE AMOUNT OF SHIELDING REQUIRED FOR HUMAN HABITATION UNDER DIFFERENT SOLAR WIND SOLAR ENERGETIC PARTICLE AND SOLAR CYCLE CONDITIONS. THE SECOND LEEP STUDY WILL EXAMINE THE EFFECT OF THE EARTH S GEOMAGNETIC TAIL ON THE VOLATILE AND PLASMA ENVIRONMENT EXOSPHERIC LOSS AND THE RADIATION ENVIRONMENT AT THE SURFACE. THESE LEEP STUDIES ARE DESIGNED TO PURPOSELY INTEGRATE THE TEAM ON A COMMON SUBJECT WITH THE SIMILAR CONDITIONS. LEADER HAS OVER 25 PUBLISHED ENVIRONMENTAL MODELS IN ITS TOOL CHEST FOR USE IN THE HUMAN-ENVIRONMENT INTERACTION STUDIES. IN THESE STUDIES WE WILL CONTINUE TO INTEGRATE INTERNS FROM HBCUS IN THE AREA AROUND GSFC AND CONTINUE OUR STRONG SUPPORT OF SSERVI-CENTRAL S EFFORT TO INTEGRATE ACROSS ALL TEAMS. LEADER WILL DIRECTLY ADDRESS A NUMBER OF HEOMD STRATEGIC KNOWLEDGE GAPS INCLUDING THOSE ADDRESSING VOLATILE PROSPECTING AND ISRU THE REACTIVITY OF LUNAR DUST PLASMA CHARGING AND GROUNDING RADIATION SHIELDING AND RADIATION EFFECT ON HUMANS.