THIS PROPOSAL OUTLINES A 16 MONTH EXTENSION TO A PROJECT FUNDED THROUGH THE 2011 SCIENCE TEAM FOR THE OCO-2 MISSION CALL. THAT PROJECT IS SCHEDULED TO END IN NOVEMBER 2015 BUT WILL BE EXTENDED THROUGH NOVEMBER 2016. THE WORK OUTLINED HERE EXTENDS THAT PROJECT BY 16 MONTHS TO BRING THE TIMING OF THE PROJECT IN LINE WITH THE CURRENT FUNDING CYCLE. THE WORK FUNDED THROUGH THE 2011 CALL WILL EXPAND THREE EXISTING PROJECTS TWO OF WHICH ARE FUNDED BY NASA TO PLAN FOR AND INGEST INITIAL DATA FROM OCO-2. THE THREE ONGOING PROJECTS INVOLVE (I) THE DEVELOPMENT OF LEVEL 3 MAPPING TOOLS THAT WILL MAKE IT POSSIBLE TO CREATE FULL COVERAGE MAPS OF XCO2 AT HIGH SPATIOTEMPORAL RESOLUTION WITH A RIGOROUS ASSESSMENT OF THE ASSOCIATED UNCERTAINTIES (II) THE DEVELOPMENT OF DATA ASSIMILATION TOOLS FOR NORTH AMERICA (NA) AND THE ASSESSMENT OF THE INCREMENTAL VALUE OF OCO-2 OBSERVATIONS FOR CONSTRAINING THE NA CARBON BALANCE AND (III) THE DEVELOPMENT OF A GLOBAL NEAR-REAL-TIME DATA ASSIMILATION SYSTEM WITH AUTOMATED DATA INGESTION AND ANOMALY DETECTION THAT WILL BE EXTENDED TO INGEST OCO-2 DATA. THE WORK PLAN FOR THE EXISTING PROJECT ENDS WITH AN EXPLORATION OF INITIAL XCO2 DATA FROM OCO-2. DURING THE 16 MONTH EXTENSION WE PROPOSE (1) TO CREATE AND ITERATIVELY UPDATE (AS THE RETRIEVAL ALGORITHM IS UPDATED) GLOBAL MAPS OF XCO2 FOR THE FIRST TWO YEARS OF THE MISSION OR MORE AS DATA AVAILABILITY PERMITS (2) APPLY THE DEVELOPED COVARIANCE QUANTIFICATION AND MAPPING TOOLS TO SOLAR INDUCED FLUORESCENCE (SIF) DATA FROM OCO-2 AND CREATE AND ITERATIVELY UPDATE GLOBAL MAPS OF SIF FOR THE FIRST TWO YEARS OF THE MISSION OR MORE AS DATA AVAILABILITY PERMITS AND (3) INGEST THE INITIAL TWO YEARS OF XCO2 DATA FROM OCO-2 INTO THE GLOBAL DATA ASSIMILATION SYSTEM TO OBTAIN GLOBAL ESTIMATES OF CO2 FLUXES BASED ON OCO-2 DATA. TOGETHER THE EXTENDED SCOPE OF THE PROJECT WILL CONTRIBUTE DIRECTLY TO FOUR OF THE TASKS LISTED IN THE CALL FOR PROPOSALS. NAMELY THIS WORK WILL CONTRIBUTE TO VALIDATION STRATEGIES FOR LEVEL 2 PRODUCTS PERFORMING FLUX INVERSION ANALYSIS USING OCO-2 DATA ANALYZING OBSERVING STRATEGIES FOR QUANTIFICATION OF BOTH SINKS AND DISCRETE SOURCES AND NEW RESEARCH AND INNOVATIVE ANALYSES USING DATA FROM OCO-2.