CF Coordinate Conventions

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CF_Coordinate_Conventions Description: The purpose of the CF conventions is to create self-describing netCDF files: each variable in the file has an associated description of what it represents, each value can be located in space and time. An important benefit of a convention is that it enables software tools to display data and perform operations on specified subsets of the data with no user intervention. It is equally important that the metadata be easy for human users to write and to understand.

Glossary Domain: WCS, HTAP

Related Links

Links to this page
[[Links::CF Conventions, Standardized Geographic Region Names

Contributors

[[Contributors::Brian Eaton, Jonathan Gregory, Bob Drach, Karl Taylor, Steve Hankin, John Caron, Rich Signell, Phil Bentley, Greg Rappa, CFpeople.]]

History

[[History::The convention was designed by Brian Eaton, Jonathan Gregory, Bob Drach, Karl Taylor and Steve Hankin. Version 1.0, 28 October, 2003, Version 1.1, 17 January, 2008 Version 1.2, 4 May, 2008 Version 1.3, 7 November, 2008 Version 1.4, 27 February, 2009]]

Term Details


CF Metadata in the netCDF files

All the CF metadata is written in attributes. If variables names would have to be standard names, like nitrogen_monoxide, it would limit the number of such variables to one per file. Therefore, to mark a variable, an attribute is used. The convention does not standardize any variable or dimension names.

Description of the Data

Units

Long Name

Standard Name

Ancillary Data

Flags

Coordinate Types

Latitude Coordinate

Longitude Coordinate

Vertical (Height or Depth) Coordinate

Time Coordinate

Coordinate Systems

Independent Latitude, Longitude, Vertical, and Time Axes

Two-Dimensional Latitude, Longitude, Coordinate Variables

Reduced Horizontal Grid

Timeseries of Station Data

Trajectories

Grid Mappings and ProjectionsHorizontal Coordinate Reference Systems, Grid Mappings, and Projections

Scalar Coordinate Variables

Labels and Alternative Coordinates

Labels

Alternative Coordinates

Data Representative of Cells

Cell Boundaries

Cell Measures

Cell Methods

Climatological Statistics

Reduction of Dataset Size

Packed Data

Compression by Gathering