SCIENCE GOALS AND OBJECTIVES: WE PROPOSE TO CREATE A WELL DOCUMENTED CALIBRATED DATASET OF THE HELICITY OF SUBSURFACE FLOWS DERIVED FROM SDO-HMI FOR SCIENTIFIC INVESTIGATIONS BY THE HELIOPHYSICS COMMUNITY. HELICITY PLAYS AN IMPORTANT ROLE IN A BROAD RANGE OF SOLAR PHENOMENA FROM THE DYNAMO TO FLARES AND CORONAL MASS EJECTIONS CMES. HELICITY-LOADED FIELDS ARE VERY PROBABLY RESPONSIBLE FOR THE MOST GEO-EFFECTIVE SOLAR PHENOMENA SUCH AS CMES AND FLARES. EXCESS OF HELICITY IN CORONAL MAGNETIC STRUCTURES CAN LEAD TOTHEIR INSTABILITY AND ERUPTION. THE SIGNATURE OF HELICITY FLOW FROM THE SOLAR INTERIOR TO THE PHOTOSPHERE AND CHROMOSPHERE IS THEREFORE VITAL FOR A BETTER UNDERSTANDING OF THE ROLE OF HELICITY IN SOLAR FLARE-CME ACTIVITY. THE KINETIC HELICITY OF SUBSURFACE FLOWS CAN BE USED AS A PROXY OF MAGNETIC-CURRENT HELICITY IN THE SOLAR INTERIOR AND WILL BE CRUCIAL FOR STUDIES OF THE EVOLUTION OF ACTIVE REGIONS THEIR FLARE ACTIVITY AND THE PROPAGATION OF HELICITY. THE PROPOSED DATA PRODUCT WILL THUS PROVIDE A CRUCIAL LINK BETWEEN THE EVOLUTION OF MAGNETIC FIELDS BELOW THE SURFACE AND THAT OBSERVED IN THE SOLAR ATMOSPHERE USING MAGNETOGRAMS. THIS WILL BE THE FIRST TIME THAT SUCH A DATA SET WILL BE MADE AVAILABLE TO THE COMMUNITY. METHODOLOGY WE WILL PRODUCE THREE DATA PRODUCTS: THE KINETIC HELICITY ITS VERTICAL CONTRIBUTION AND THE NORMALIZED HELICITY GRADIENT VARIANCE NHGV PARAMETER THAT CAPTURES THE VARIATION OF KINETIC HELICITY WITH DEPTH AND TIME. THE INPUT MEASUREMENTS ARE THE DAILY SUBSURFACE FLOWS FROM THE SURFACE TO A DEPTH OF 16 MM DERIVED FROM SDO-HMI DOPPLERGRAMS USING THE DRMS RING-DIAGRAM PIPELINE. FROM THESE MEASUREMENTS WE WILL CALCULATE THE PROPOSEDDATA PRODUCTS AS A FUNCTION OF DISK POSITION COVERING THE WHOLE SUN INCLUDING ACTIVE AS WELL AS QUIET REGIONS. THE SUBSURFACE HELICITY OF QUIET REGIONS PROVIDES A SOLAR BACKGROUND AND WILL BE USED TO CALIBRATE THE HELICITY OF ACTIVE REGIONS. THE CADENCE AND THE SPATIAL GRID OF THE FULL-DISK MAPS WILL BE GIVEN BY THOSE OF THE INPUT DATA. WE WILL REMOVE ANY SYSTEMATIC EFFECTS PRESENT IN THE SUBSURFACE FLOW MEASUREMENTS BEFORE CALIBRATING THE HELICITY DATA PRODUCTS. WE HAVE ALREADY TESTED OUR METHOD DERIVING THE HELICITY QUANTITIES FROM EXISTING SUBSURFACE FLOW DATA. WORK PLAN: WE WILL CREATE THE DATA PRODUCTS FROM EXISTING ARCHIVED SUBSURFACE FLOW DATA INCLUDING THEIR CALIBRATION AND DOCUMENTATION. WE WILL CONTINUE TO CREATE NEW DATA PRODUCTS AS SOON AS SUBSURFACE FLOW MEASUREMENTS BECOME AVAILABLE WHICH OCCURS TYPICALLY WITHIN A FEW DAYS FROM SDO-HMI VIA JSOC AND WILL ADD THEM TO THE DATA SET. IN THIS WAY WE WILL CREATE A DATASET THAT CAN BE USED FOR STATISTICAL STUDIES WITH LARGE SAMPLES AS WELL AS FOR AN ANALYSIS OF ACTIVE REGIONS THAT ARE STILL PRESENT ON THE SUN. WE WILL MAKE THE DATA PRODUCTS FITS AND ASCII FILES AVAILABLE IN THE PUBLIC DOMAIN THROUGH WEBSITE ARCHIVESAND VIRTUAL OBSERVATORIES WITH THE HELP OF SOFTWARE ENGINEERS BASED AT NSO. RELEVANCE: MAKING THE SUBSURFACE HELICITY AVAILABLE AS A DATA RESOURCE TO THE HELIOPHYSICS COMMUNITY WILL GREATLY ENHANCE THE SCIENTIFIC RETURN FROM SDO-HMI AND WILL BE CRUCIAL FOR UNDERSTANDING MAGNETIC ACTIVITY FROM THE INTERIOR THROUGH THE SOLAR ATMOSPHERE. THIS PROPOSAL THUS ADDRESSES NASA STRATEGIC SUBGOAL 2.2: UNDERSTAND THE SUN AND ITS INTERACTIONS WITH EARTH AND THE SOLAR SYSTEM.