Satellite Mission Data Systems Requirements References
Posted here are references pertaining to data system requirements for NASA Earth Science Division’s satellite missions. Review drafts of documents are currently posted and will be updated as review comments are received and changes are made. The following is the schedule for updates and baselining these documents:
- Post reviewed versions on this web site (Version 1) – 9/22/2011
- Submit to ESDIS Project’s Configuration Control Board (CCB) – 10/3/2011
- Complete CCB review and baseline documents (Version 2) – 11/15/2011
Changes after baselining the documents will be accommodated through the ESDIS configuration control process involving review and comments from all affected organizations. The update schedule for subsequent versions is given below:
- Version 3 -- Q2 -- CY2012
- Version 4 -- Q2 -- CY2014
- Version 5 -- Q2 -- CY2016
Metadata standards: ISO 19115 Geographic Information
The ESD Base Metadata Requirements document serves as the ESD-approved implementation guidelines for required metadata to be included in science data products. The metadata requirements represented in this memo are a means of assuring the consistency of data requirements across subsystems, and supporting the data standardization necessary for system interoperability. The International Organization for Standardization (ISO) Geographic Information – Metadata standard 19115 (and related standards) shall be used to describe science data products. This standard includes two parts, 19115 and 19115-2. Part 2 and revisions to 19115 that are currently being developed by ISO, include elements that are critical for NASA collections and products. In addition, the data quality elements of 19115 have been extracted into another standard (ISO 19157). Complete descriptions of NASA collections and products will require elements from all of these standards.
Additional resources will be provided as NASA-specific ISO 19115 conventions and metadata tools are developed.
Version 2: Metadata Requirements – Base Reference for NASA Earth Science Data Products (423-RQMT-003, Dec 2011) (pdf | Word)
Please send comments on this document to Andrew.E.Mitchell @ nasa.gov
NASA Earth Science Data Preservation Content Specification
The data resulting from NASA’s missions are a valuable resource that needs to be preserved for the benefit of future generations. In the near-term, as long as the missions’ data are being used actively for scientific research, it continues to be important to provide easy access to data and services commensurate with current information technology. For the longer term, when the research community focus shifts toward new missions and observations, it is essential to preserve the previous mission data and the information needed so that a new user in the future will be able to understand how the data were used for deriving information, knowledge and policy recommendations, and to be able to “repeat the experiment” to ascertain the validity and possible limitations of conclusions reached in the past and to provide confidence in long term trends that depended on data from multiple missions. While NASA is not legislatively mandated to preserve data permanently as are other agencies such as the USGS, NOAA and NARA, it is essential for NASA to preserve all the data and associated content beyond the lives of NASA’s missions to meet NASA’s near-term objective of providing access to data and services for active scientific research. Also NASA has to ensure that the data and associated content are preserved for transition to permanent archival agencies. To fulfill this responsibility, identification of the specific content items that need to be preserved from each of NASA’s missions is essential.
This document defines the contents of data, metadata and associated documentation to be preserved beyond the life of missions funded by NASA’s Earth Science Division. The purpose of the document is to identify all the content items that need to be preserved to ensure their availability to support future investigations in long-term global change research. This document’s focus is on the contents (i.e., “what”) and not on the implementation or representation (i.e., “how”) of the content items. The contents are divided into eight categories: Preflight/Pre-Operations, Products (Data), Product Documentation, Mission Calibration, Product Software, Algorithm Input, Validation and Software Tools. Items are described under each of these categories along with rationale for requiring their preservation.
Version 3: NASA ES Data Preservation Content Spec (423-SPEC-001Ch01, Jan 2013) (pdf | Word)
Please send comments on this document to Rama.Ramapriyan @ nasa.gov
EOS Mission Guidelines
A File Format for Satellite Atmospheric Chemistry Data Based On Aura File Format Guidelines (pdf | Word)