Scope Conformance References Keywords

3 Copyright © 2012 Open Geospatial Consortium.

1. Scope

NetCDF Network Common Data Form is a data model for array-oriented scientific data. There is a freely distributed collection of access libraries implementing support for that data model in a machine-independent format. Together, the interfaces, libraries, and format support the creation, access, and sharing of scientific data. Background information regarding the overall landscape of netCDF standards is presented in the CF-netCDF Primer, OGC 10- 091r3, “CF-netCDF: Core and Extensions.” This standard is an extension to the core specification for the netCDF Classic data model in OGC 10-090 r3, “NetCDF Core.” This document specifies the netCDF Enhanced Data Model.

2. Conformance

This Standard defines the netCDF enhanced data model. Standardization targets are netCDF implementations currently: encodings. This document establishes a single requirements class, netcdf-enhanced, of http:www.opengis.netspecnetcdf1.0reqnetcdf-enhanced with a single pertaining conformance class, netcdf enhanced, with URI http:www.opengis.netspecnetcdf1.0confnetcdf-enhanced. All requirements-classes and conformance-classes described in this document are owned by the standard identified as http:www.opengis.netspecnetcdf-enhanced1.0 . Annex A normative specifies conformance tests which shall be exercised by any encoded dataset claiming to implement an OGC netCDF encoding. Conformance with this standard shall be checked using all the relevant tests specified in Annex A normative of this document. The framework, concepts, and methodology for testing, and the criteria to be achieved to claim conformance are specified in the OGC Compliance Testing Policies and Procedures and the OGC Compliance Testing web site 1 . 1 www.opengeospatial.orgcite 4 Copyright © 2012 Open Geospatial Consortium.

3. References

The following normative documents contain provisions that, through reference in this text, constitute provisions of this document. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the normative document referred to applies. The netCDF classic data model is defined in OGC 10- 091r3, “NetCDF Core.” The standard defined in this document is an extension to that core specification. Consequently all provisions stated in the NetCDF Core apply to the NetCDF Enhanced Data Model defined herein. In addition to the normative reference noted above, portions of this document are taken from the Uni data NetCDF User’s Guide http:www.unidata.ucar.edusoftwarenetcdfdocsnetcdf.html and from the NASA Earth Science Data Systems ESDS Standards Process Group SPG document ESDS-RFC-022, NetCDF-4HDF5 File Format, http:earthdata.nasa.govour-communityesdswgstandards-process-spgrfcesds-rfc-022

4. Terms and Definitions