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Part II. Phased Implementation Plan for DMAC5. Activity: Develop archive critical metadata• Description: To aid and ensure systematic (human and machine) access and data managementacross IOOS some archive specific metadata are critical. As a limited and brief example,some important elements are:- Unique data set identification code;- Expiration date;- Data set lineage and version history;- Points of access and available access methods;- Data set citation and references;- Data set latency specification.• Milestone 1: Develop a comprehensive list of archive critical metadata and organize a planthat will lead to a system-wide metadata standard that is easy to implement and maintain.- Task 1: Convene a working group with experienced representation for data archiving andmetadata development to prepare the list.- Task 2: Interact with the DMAC Metadata and Discovery Data and Data Transport developmentteams and working groups to ensure archive needs are accommodated.- Category: Tasks are committee work.- Deliverables: Archive specific metadata will appear in IOOS metadata standards.- Estimated Resources: Funding to cover committee work and collaboration with theDMAC Metadata and Discovery Data team.- Schedule: Beginning in Year 1 and continuing.- Sequencing: Done prior to completion of IOOS metadata standards work.- Partnerships: Inside IOOS (A&A expert team, and Metadata and Data Discovery Team,Data Transport Team).6. Activity: Define IOOS archive and access data policy• Description: The policies for contributing data and using data from IOOS need to be formallydocumented. A few key policy issues from the archive and access perspective are:- Full and open data sharing as per IOC and WMO policy and at no cost or minimum cost forreproduction. The conditions and authoritative protocol for allowing restricted access need tobe discussed and defined, if required.- Data collected or prepared with IOOS funding must be placed in the Archive System. If possible,actions to be taken for non-compliance should be articulated.- Agreement that the four data categorizations are suitable to determine IOOS data preservationrequirements.- Full cooperation with GOOS.102