Changes between Version 6 and Version 7 of markhDataModelDraft


Ignore:
Timestamp:
02/19/14 02:59:22 (6 years ago)
Author:
markh
Comment:

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  • markhDataModelDraft

    v6 v7  
    1616A derived coordinate links together explicit coordinate instances of a Field with a defined process for combining these to form a new coordinate.
    1717
    18 Each input coordinate is named and a derivation formula is provided.  At present derivation formulae are provided by named reference to [http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/apd.html Appendix D] and [http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/apf.html Appendix F] of the CF conventions for NetCDF files.
     18Each input coordinate is named and a derivation formula is provided.  At present derivation formulae are provided by named reference to [http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/apd.html Appendix D] ~~and [http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/apf.html Appendix F]~~ of the CF conventions for NetCDF files.
    1919
    20 These transform constructs correspond to the functions of the CF-netCDF attributes `formula_terms`, which describes how to compute a vertical auxiliary coordinate variable from components ([http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/cf-conventions.html#dimensionless-v-coord CF Appendix D]), and `grid_mapping`, which can describe how to compute true latitude and longitude auxiliary coordinate variables from horizontal projection dimension coordinates ([http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/cf-conventions.html#appendix-grid-mappings CF Appendix F]).
     20These transform constructs correspond to the functions of the CF-netCDF attributes `formula_terms`, which describes how to compute a vertical auxiliary coordinate variable from components ([http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/cf-conventions.html#dimensionless-v-coord CF Appendix D])~~, and `grid_mapping`, which can describe how to compute true latitude and longitude auxiliary coordinate variables from horizontal projection dimension coordinates ([http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/cf-conventions.html#appendix-grid-mappings CF Appendix F])~~.