OPEN, FREE & FAIR DATA GUIDE CHEAT SHEET FOR NASA-FUNDED EARTH SCIENCE DATA PRODUCTS § Keep a holistic view with FAIR core concepts. § Follow NASA established processes and practices. § Utilize NASA enterprise systems and tools. § Leverage community standards and practices. F1 IDENTIFIER F2 RICH METADATA F4 RESOURCE A1, A1.1 PROTOCOL A1.2 PROCEDURE R1 ATTRIBUTE R1.1 LICENSE R1.2 PROVENANCE R1.3 STANDARD Obtain and use unique, persistent, and resolvable identifiers: § Data product: DOI from DataCite (via a DAAC) or Zenodo. § Metadata records: UUID or ARKs. Additionally, use these IDs if appropriate: § Person (Data producer and (meta)data curator): ORCID. § Organization: ROR ID. § Data center or Repository: re3data ID. § Instrument/Platform: PIDInst § Other artifacts: RRID § Use CMR UMM-C schema. § Ensure inclusion of required UMM-C metadata elements such as: DOI, Title, Abstract, Creator and/or Publisher [Data Centers], Version, Platform, Spatial Extent, Temporal Extents, Processing Level, Science Keywords, and Metadata Specification. When publicly releasing data products and associated metadata records: § Include an open license, following practices in R1.1. § Include data provenance, following practices in R1.2. Additionally, § include those in I3 if appropriate. § Review and include relevant attributes from Appendices D and E in DPDG (Ramapriyan et al. 2024). § Use CC0 1.0 + Attribution for mission data products. § Use CC0 1.0 + Attribution or CC-BY 4.0 for NASA-funded scientific data products. § Make it both human and machine-readable* and include recommended citation in metadata and on DOI/data product landing pages. * See the side panel on the right for examples. § Use UMM-C metadata fields (Version, Data Dates, Metadata Dates, DOI/PreviousVersion, RelatedURL, Data Center, Collection Citation/Creator). § Use global attributes in netCDF data files for source data, algorithm used, and data producer and/or publisher. WHAT YOU SHOULD KNOW Making data FAIR is a multi-dimensional, multi-layered, and multi- faceted problem (Figure 1) that requires multi-domain information and knowledge. § FAIR Principles consist of 15 FAIR sub-principles in 4 quality dimensions (Findability, Accessibility, Interoperability, and Reusability), covering three categories (Data, Metadata, and Infrastructure) (Figure 2). § The FAIR principles can be mapped to 28 category-specific requirements (Figure 3) and 21 unique category-specific unique core concepts (Figure 2). FAIR ID / CORE CONCEPT Integrate with NASA’s Earth data publication process: § Register data product DOIs and UMM-C/G metadata records in CMR § Integrate to Earthdata Search Portal Ensure integration to additional searchable resources, including: § DataCite, if it minted DOI § Google Search Engine § Register for an Earthdata account. § Use Earthdata Search Portal for retrieving metadata records. § Download data with Earthdata Login. § Use Earthdata (Cloud/GIS) login for data access. § Use Earthdata Search Portal or CMR API for metadata access. Figure 2. FAIR dimensions and sub-principles IDs (filled circles); categories (filled ovals) for data (D), metadata (M), and infrastructure (IS); and core concepts (round triangles). The pink-filled core concepts are FAIRness quality measures. Source: Peng et al. (2024a). License: CC-BY 4.0 DEVELOPED BY NASA ESDS O’FAIR Working Group Recommended Citation: Peng. G., R.R. Downs, H. K. Ramapriyan, and NASA ESDS O’FAIR WG, 2024: Open, Free & FAIR Data Guide Cheat Sheet for NASA-funded Earth Science Data Products. Version: v01r00-20240926. DOI: https://doi.org/10.5281/zenodo.11520035. License: CC0 1.0 + Attribution. Acknowledgement: The work for this cheat sheet and the O’FAIR data guide document (i.e., Peng et al. 2024b) was carried out across multiple United States government-funded institutions under contracts with NASA (see details in Peng et al. 2024b). Government sponsorship is acknowledged. § Follow a standard for enabling data identifiers globall