Note: NetCDF files using this convention can be be given the global attribute Conventions = 'CF-1.6, UGRID-1.0' if they are CF- and UGRID-compliant, or just Conventions = 'UGRID-1.0' if they are not CF-compliant.

• Version 1.0

This document is a standard for storing unstructured grid (a.k.a. unstructured mesh, flexible mesh) model data in a Unidata Network Common Data Form (NetCDF) file. The standard was developed over a period of several years through the UGRID Google Group which had members from many different unstructured grid modeling communities (including SELFE, ELCIRC, FVCOM, ADCIRC). From these discussions Bert Jagers (Deltares) created the first draft of this document. We will likely propose this as a CF Standard once it has been fully tested by the community.

People who have contributed to this standard:

• Bert Jagers
• David Stuebe
• Tom Gross
• Chris Barker
• Brian Zelenke
• Rich Signell
• Bob Oehmke
• Alex Crosby
• Karen Schuchardt
• David Ham
• Brian Blanton
• Cristina Forbes
• Charles Seaton
• Dave Forrest
• Bill Howe
• Geoff Cowles