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Overview of current output files which will be converted to a CF compliant file

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Terms:
Geographic coordinate systems:
In Delft3D there are two methods to store coordinates:

Cartesian
Spherical
SOBEK stores output in a cartesian system. If you start an empty SOBEK session the default is to show the Dutch Map stored in Amersfoort New system.

	Current Delft3D/SOBEK	CF Compliant	notes
Datum (shape of the earth)	Delft3D:WGS_1984 SOBEK:Bessel 1841	WGS_1984	The geoid is not explicitly defined in the CF convention. There was some discussion on this.
Projection/Geographic Coordinate System	Delft3D Spherical:WGS84 Delft3D Cartesian: Unknown SOBEK: Amersfoort new The region is only valid in the bounding box of the Netherlands but this restriction is not used.	Projection by grid mapping. Projection information is also stored. Data is alwasy provided in WGS84
Distance function	Delft3D:Spherical & Cartesian SOBEK:Cartesian

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Required information per file format:

GRID

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