DOCUMENTING AND ENABLING IMPROVED OBSERVATIONALLY BASED PREDICTIONS OF WATER AND ENERGY CYCLE CONSEQUENCES OF EARTH SYSTEM VARIABILITY AND CHANGE (NEWS GRAND CHALLENGE) REQUIRES AN ACCURATE SPATIAL-TEMPORAL ACCOUNTING OF GLOBAL WATER AND ENERGY CYCLE (WEC) RESERVOIRS AND FLUXES. TO ACCOMPLISH THIS GOAL WE MUST CONTINUALLY UPDATE AND IMPROVE THESE FOUNDATIONAL BENCHMARKS USING THE MOST ADVANCED SPACE- AND GROUND-BASED MEASUREMENT SYSTEMS TO SERVE AS A BASELINE FOR STUDIES OF WEC CHANGE AND FOR EVALUATING WEATHER AND CLIMATE PREDICTION MODELS.THEREFORE THIS PROJECT WILL DESIGN DEVELOP AND IMPLEMENT A DYNAMIC STATE OF THE GLOBAL WATER AND ENERGY CYCLE (SWEC) ASSESSMENT BASED ON THE MOST ADVANCED OBSERVATIONS MODELS AND CONSERVATION CONCEPTS. THE SWEC WILL BUILD ON PREVIOUS NEWS EFFORTS BY DEVELOPING: (A) A MULTI-PRODUCT WEC CLIMATOLOGY MATRIX ACCOUNTING (B) TIME-SERIES TREND AND VARIABILITY ASSESSMENT AND (C) REGIONAL WATER AND ENERGY ASSESSMENTS. RATHER THAN TRYING TO IDENTIFY THE 'BEST' PRODUCTS FOR A GIVEN WEC GEOPHYSICAL VARIABLE (I.E. PRECIPITATION EVAPORATION RADIATION ETC.) SWEC WILL STUDY HOW VARIOUS COMBINATIONS OF PRODUCTS EFFECT WEC BUDGET CLOSURE AT VARIOUS TIME-SPACE SCALES. SWEC WILL ALSO BE DESIGNED AROUND A DYNAMIC FRAMEWORK - ALLOWING FOR NEW DATASETS TO BE INCLUDED AS THEY BECOME AVAILABLE AND WILL SPECIFICALLY INCLUDE RECENTLY DEVELOPED NASA-MEASURES DATASETS. UNCERTAINTY ESTIMATES FOR EACH ASSESSMENT WILL BE ASSESSED AND FOLLOWING PREVIOUS NEWS CLIMATOLOGY WORKING GROUP WORK (RODELL ET AL. 2013) MASS/ENERGY CONSERVING WEC ASSESSMENTS WILL BE MADE FOR EACH PRODUCT COMBINATION.