Uncertainties for Analysis Ready Data K. . Thome NASA WGCV Plenary # 43 INPE, Sao Jose dos Campos April 10-13, 2018

FDA-7: Product Specifications in accordance with the CARD4L Framework Work Plan activities are emphasizing analysis ready data CEOS Analysis Ready Data Interoperable free and open tools Data, processing, and architecture standards Analytical processing capabilities User Metrics FDA-7: Product Specifications in accordance with the CARD4L Framework   Q4 2017 CEOS Analysis Ready Data for Land (CARD4L) will be satellite data that have been processed to a minimum set of requirements and organized into a form that allows immediate analysis with a minimum of additional user effort, and, interoperability both through time and with other datasets. LSI-VC will commence development of the first concrete specifications for CARD4L-branded products, with at least two such specification documents presented for endorsement at the 31st CEOS Plenary Meeting. Draft versions of these specifications will be used to inform LSI-VC contributions to FDA-4. LSI-VC (with WGCV)

Future Data Architecture FDA-12: Inventory of space data product formats used by CEOS agencies. Q4 2019 Develop an inventory of current product format used in CEOS agencies and identify recommendations to facilitate interoperability WGCV

Capacity Building, Data Access, Availability and Quality CV-15: L1 top-of-atmosphere interoperability   Q4 2017 Develop an initial recommendation of a community reference in collaboration with GSICS. WGCV CV-17: Continental scale surface reflectance validation Q2 2019 Provide guidance for development of methodologies to validate the results of the recent ACIX work leading to protocols for determining uncertainties for interoperable reflectnce products. WGCV

VC-30: Interoperability case study for Landsat and Sentinel-2   Q4 2018 While monitoring existing MRI efforts by agencies (including the MRI framework for moderate resolution land sensor interoperability (refer VC-29) applied to the Landsat and Sentinel-2 missions) develop the long-term plans and actions for MRI, as well as identify any expansion of MRI to other sensors. Furthering the framework under considerations of the agreed principles and expanding it to other sensors  with a focus on moderate resolution SAR. Analyzing various past/ongoing implementations (NASA HLS, ESA HSL,…) for MRI framework compliance. Initiating detailed assessments of various implementation options (common grid, spectral & temporal adjustments).   LSI-VC with WGCV

Try to avoid bogging down in definition of ARD, MRI, data cube Identify key questions to answer that lead to the assessment of uncertainties in surface reflectance Identify key questions to answer that lead to assessment of surface reflectance validation This can be a large effort Make this more manageable by determining a set of starting points CARD4L as the definition of what an ARD is and what is needed to develop a “suitable” ARD Provide guidance on how CARD4L products can be evaluated against their requirements Incorporate the Level 1 interoperability discussion because the next step in ARD is to allow an ARD from multiple sensors to be developed