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Please find on this page a deprecated proposal for netCDF output from the spectral wave model SWAN.
Elements from the SWAN input file are refered to by INPUT*, elements from the SWAN Fortran code swanmain.for are referred to by OV*IVTYPE.
Please provide feed-back or commentsIn the mean time netCDF has been implemented in the SWAN trunk, in a collaboration between Deltares (on behalf or Rijkswaterstaat), BMT Argoss, and TU Delft using somewhat different names (see routine agioncmd.f90). We adopted this page a bit to match the final implementation. There is also a Matlab routine in OpenEarthTools to convert ASCII spectral files into netCDF. Elements from the SWAN input file are here refered to by INPUT*, whereas elements from the SWAN Fortran code swanmain.for are referred to by OV*IVTYPE.

Table of Contents

SWAN netCDF-CF CDL scheme

Code Block


 // A working draft proposal for CF compliance for netCDF output for SWAN
NetCDF SWAN.nc {

// proposal for CF and SWAN meta data in SWAN

dimensions:
	time      = 1; // time:		also put time in for single times
	mx        = 2; // yx:		(mxc+1) for 2D grids
	my        = 3; // xc:		(myc+1) for 2D grids
	mddirection   = 4; // nd: (mdc+1) directions, now called nf90_def_dim
	msfrequency   = 5; // ms: (msc+1) frequencies
	locpoints    = 6; // points:	for 1D grids, for UNSTRUC and for squeezed [mx by my] grids

variables:
// dimensions consistent with ncBrowse, not with native MATLAB netcdf package.
// ----------------- COORDINATES -----------------
// Options:
// * like SWAN use same variable for CARTESIAN and SPHERICAL, but change attributes
// * use different variables for CARTESIAN and SPHERICAL, but change attributes
// if INPUT.CGRID.REGular
	double mx(mx), shape        = [2] ;
		mx(mx):swan_xpc     = // INPUT value: optional for input, implemented in output
		mx(mx):swan_xlenc   = // INPUT value: optional for input, implemented in output
		mx(mx):swan_alpc    = // INPUT value: optional for input, implemented in output
		mx(mx):swan_comment = "mxc+1"
		mx(mx):_FillValue   = // INPUT.CGRID.xexc or OVEXCV{IVTYPE}
		mx:actual_range     = [~ ~]
		// if INPUT.CGRID.CARTESIAN
		mx:standard_name    = "projected_x_coordinate"
		mx:units            = "m"
		mx(mx):grid_mapping = "projected_coordinate_system"
		// elseif INPUT.CGRID.SPHERICAL
		mx:standard_name    = "longitude"
		mx:units            = "degrees_east"
		mx(mx):grid_mapping = "wgs84"
		// end
		...
	double my(my), shape ;
		my(my):swan_ypc        = [3]
		my(my):swan_ypc     = = // INPUT value: optional for input, implemented in output
		my(my):swan_ylenc   = // INPUT value: optional for input, implemented in output
		my(my):swan_alpc    = // INPUT value: optional for input, implemented in output
		my(my):swan_comment = "myc+1"
		my(my):_FillValue   = // INPUT.CGRID.yexc or OVEXCV{IVTYPE}
		my:actual_range     = [~ ~]
		// if INPUT.CGRID.CARTESIAN
		my:standard_name    = "projected_y_coordinate"
		my:units            = "m"
		my(my):grid_mapping = "projected_coordinate_system"
		// elseif INPUT.CGRID.SPHERICAL
		my:standard_name    = "latitude"
		my:units            = "degrees_north"
		my(my):grid_mapping = "wgs84"
		// end
		...
// - - - - - - - - - - - - - - - - - - - - - - - - - - -
// elseif INPUT.CGRID.CURVilinear
	double XP(mxxc,myyc), shape = [2] ;
		// idem
		...
	double YP(mxxc,myyc), shape = [3] ;
		// idem
		...
// - - - - - - - - - - - - - - - - - - - - - - - - - - -
// elseif INPUT.CGRID.UNSTRUCtured
	double XPx(locpoints), shape = [6] ;
		// idem
		...
	double YPYyP(locpoints), shape = [6]
		//  ;
		// idem
		...
// end
// ----------------- DIRECTIONS -----------------
	double CDIRspread_1d(md), shape = [4] ;
		CDIRspread_1d:standard_name    = ""
		CDIRspread_1d:units            = "degrees_true"
		CDIRspread_1d:longstandard_name        = "spectral Cartesian direction"
		CDIR.dir1sea_surface_wave_from_direction" // sea_surface_wave_to_direction
		spread_1d:nautical         = 1 // or 0
        spread_1d.dir1             = // INPUT value: optional for input, implemented in output
		CDIRspread_1d.dir2             = // INPUT value: optional for input, implemented in output
		CDIRspread_1d:swan_comment     = "mdc+1"
		...
	double NDIR(), shape = [4]
		NDIR// ----------------- FREQUENCY -----------------
	double frequency(ms) ;
		frequency:standard_name    = "wave_frequency"
		NDIR:unitsfrequency:long_name        = "frequencies" // absolute vs relative, see = "degrees_true"attribute 'relative_to_current' of energy
		CDIR:long_namefrequency:units            = "spectral nautical directions-1"
		NDIRfrequency.dir1swan_flow             = // INPUT value: optional for input, implemented in output
		NDIR.dir2   frequency.swan_fhigh          = // INPUT value: optional for input, implemented in output
		NDIRfrequency:swan_comment     = "mdcmsc+1"
		...
// ----------------- FREQUENCYCOORDINATE SYSTEMS -----------------
	double AFREQ(), shape = [5]
		AFREQ:standard_name    = ""
		AFREQ:long_name        = "absolute frequencies"
		AFREQ:units            = "degrees_true"
		AFREQ.swan_flow        = // INPUT value: optional for input, implemented in output
		AFREQ.swan_fhigh       = // INPUT value: optional for input, implemented in output
		AFREQ:swan_comment     = "msc+1"
		...
	double NFREQ(), shape = [5]
		NFREQ:standard_name    = ""
		NFREQ:long_name        = "relative frequencies"
		NFREQ:units            = "degrees_true"
		NFREQ.swan_flow// The projected_coordinate_system information could optionally be added to
// either SWAN input or in a post-processing step.
// if INPUT.CGRID.CARTESIAN
//	int32 projected_coordinate_system() ;
//		projected_coordinate_system:name = "Amersfoort / RD New"
//		projected_coordinate_system:epsg = 28992
//		projected_coordinate_system:epsg_name = "Oblique Stereographic"
//		projected_coordinate_system:grid_mapping_name = " "
//		projected_coordinate_system:semi_major_axis = 6.3774e+006
//		projected_coordinate_system:semi_minor_axis = 6.35608e+006
//		projected_coordinate_system:inverse_flattening = 299.153
//		projected_coordinate_system:latitude_of_projection_origin = 52.0922
//		projected_coordinate_system:longitude_of_projection_origin = 5.23155
//		projected_coordinate_system:false_easting = 155000
//		projected_coordinate_system:false_northing = 463000
//		projected_coordinate_system:scale_factor_at_projection_origin = 0.999908
//               = // INPUT value: optional forPROJ4 input,REQUIRED implemented in output
		NFREQ.swan_fhigh       = // INPUT value: optional for input, implemented in output
		NFREQ:swan_comment     = "msc+1"
		...
// ----------------- COORDINATE SYSTEMS -----------------
// The projected_coordinate_system information could optionally be added to
// either SWAN input or in a post-processing step.
// if INPUT.CGRID.CARTESIAN
//	int32 projected_coordinate_system([]), shape = [1]
//		epsg:name = "Amersfoort / RD New"
//		epsg:epsg = 28992
//		epsg:epsg_name = "Oblique Stereographic"
//		epsgFOR ADAGUC.KNMI.NL
//		projected_coordinate_system:proj4_params = "+proj=sterea +lat_0=52.15616055555555 +lon_0=5.38763888888889 +k=0.999908 +x_0=155000 +y_0=463000 +ellps=bessel +units=m +towgs84=565.4174,50.3319,465.5542,-0.398957388243134,0.343987817378283,-1.87740163998045,4.0725 +no_defs"
//		projected_coordinate_system:EPSG_code = "EPSG:28992"
//		projected_coordinate_system:projection_name = "Dutch rijksdriekhoek system"
// - - - - - - - - - - - - - - - - - - - - - - - - - - -
// elseif INPUT.CGRID.SPHERICAL
// The (lat,lon) coordinates information could be hard-coded into SWAN
// with each of the options: CCM, QC or REPEATING
		int32 wgs84() ;
		wgs84:name = "WGS 84"
		wgs84:epsg = 4326
		wgs84:grid_mapping_name = " latitude_longitude"
//		epsgwgs84:semi_major_axis = 6.3774e37814e+006
//		epsgwgs84:semi_minor_axis = 6.35608e35675e+006
//		epsgwgs84:inverse_flattening = 299298.153
//		epsg:latitude_of_projection_origin = 52.0922
//		epsg:longitude_of_projection_origin = 5.23155
//		epsg:false_easting = 155000
//		epsg:false_northing = 463000
//		epsg:scale_factor_at_projection_origin = 0.999908
//                // optional PROJ4 REQUIRED FOR ADAGUC.KNMI.NL
//		epsg:proj4_params = "+proj=sterea +lat_0=52.15616055555555 +lon_0=5.38763888888889 +k=0.999908 +x_0=155000 +y_0=463000 +ellps=bessel +units=m +towgs84=565.4174,50.3319,465.5542,-0.398957388243134,0.343987817378283,-1.87740163998045,4.0725 +no_defs"
//		epsg:EPSG_code = "EPSG:28992"
//		epsg:projection_name = "Dutch rijksdriekhoek system"
// - - - - - - - - - - - - - - - - - - - - - - - - - - -
// elseif INPUT.CGRID.SPHERICAL
// The (lat,lon) coordinates information could be hard-coded into SWAN
// with each of the options: CCM, QC or REPEATING
		int32 wgs84([]), shape = [1]
		wgs84:name = "WGS 84"
		wgs84:epsg = 4326
		wgs84:grid_mapping_name = "latitude_longitude"
		wgs84:semi_major_axis = 6.37814e+006
		wgs84:semi_minor_axis = 6.35675e+006
		wgs84:inverse_flattening = 298.257
    257
                // optional PROJ4 REQUIRED FOR ADAGUC.KNMI.NL
		wgs84:proj4_params = "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs "
		wgs84:EPSG_code = "EPSG:4326"
		wgs84:projection_name = "Latitude Longitude"
		wgs84:wkt = "GEOGCS["WGS 84",...
// end
// ----------------- PRIMARY VARIABLES -----------------
	single density(), shape = [~ ~] // density_1d for 1D, density for 2D
		density:relative_to_current   = 0 // or 1, depending on respectively. AFREQ vs RFREQ
		density:swan_code             =            // OVKEYW{IVTYPE} = 'VaDens';
		density:swan_name             =            // OVSNAM{IVTYPE} = 'VaDens';
		density:long_name             =            // OVLNAM{IVTYPE} = 'spectral variance density';
		density:swan_units            =            // optional PROJ4 REQUIRED FOR ADAGUC.KNMI.NL
		wgs84:proj4_params = "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs "
		wgs84:EPSG_code = "EPSG:4326"
		wgs84:projection_name = "Latitude Longitude"
		wgs84:wkt = "GEOGCS["WGS 84",
// end
// ----------------- PRIMARY VARIABLES -----------------
	single VaDens(), shape = [~ ~]
		VaDens:swan_codeOVUNIT{IVTYPE} = 'm2/Hz';
		density:valid_range(1)        =            // OVLEXP{IVTYPE} = 0.;
		density:valid_range(2)        =            // OVHEXP{IVTYPE} = 100.;
		density:_FillValue            =            // OVEXCV{IVTYPE} = -99.;
// - - - - - - - - - - - // OVKEYW{IVTYPE} = 'VaDens';
		VaDens:swan_name- - - - - - - - - - - - - - - -
		density:units                 =            // OVSNAMOVCFUD{IVTYPE} = 'VaDens'; NEW TABLE NEEDED INSIDE SWAN
		VaDensdensity:longstandard_name             =            // OVLNAMOVCFSN{IVTYPE} = 'spectral variance density';
		VaDens:swan_units            = NEW TABLE NEEDED INSIDE SWAN
		// these do not need to be mapped            // OVUNITOVSVTY{IVTYPE} = 'm2/Hz';
		VaDens:valid_range(1)        =    5;     // means vector, scalar etc.
		// these do not need to be mapped         // OVLEXPOVLLIM{IVTYPE} = 0.;
		VaDens:valid_range(2)    // print width for =            // OVHEXP{IVTYPE} = 100.;
		VaDens:_FillValue       ascii output
		// these do not need to be mapped     =            // OVEXCVOVULIM{IVTYPE} = -991000.; // print width for ascii output
// - - - - - - - - - - - - - - - - - - - - - - - - - - -
		VaDens:units    density:actual_range             = [~ ~]          // OVCFUD{IVTYPE} = ''; NEW TABLE NEEDED INSIDE SWANadd optionally as extra service to user
		VaDensdensity:standard_namecoordinates         =  = "XP YP"        // OVCFSN{IVTYPE} = ''; NEW TABLE NEEDED INSIDE SWAN
		// these do not need to be mappedif INPUT.CGRID.CARTESIAN
		density():grid_mapping             = "projected_coordinate_system"
		// OVSVTY{IVTYPE} = 5;elseif INPUT.CGRID.SPHERICAL
		density():grid_mapping      // means vector, scalar etc.= "wgs84"
		// these do not need to be mapped         // OVLLIM{IVTYPE} = 0.;    // print width for ascii output
		// these do not need to be mapped         // OVULIM{IVTYPE} = 1000.; // print width for ascii output
// - - - - - - - - - - - - - - - - - - - - - - - - - - -
		VaDens:actual_range          = [~ ~]      // add optionally as extra service to user
		VaDens:coordinates           = "XP YP"    //
		// if INPUT.CGRID.CARTESIAN
		VaDens():grid_mapping        = "projected_coordinate_system"
		// elseif INPUT.CGRID.SPHERICAL
		VaDens():grid_mapping        = "wgs84"
		// end
// ----------------- GLOBAL META_DATA -----------------
//global Attributes:
		:title = "INPUT.PROJECT.name,INPUT.PROJECT.nr"
		:institution = ""
		:source = ""
		:history = "Data produced by SWAN version 40.72AB"
		:references = ""
		:email = ""
		:comment = "INPUT.PROJECT.title1,INPUT.PROJECT.title2,INPUT.PROJECT.title3"
		:version = ""
		:Conventions = "CF-1.5"
		:CF:featureType = "Grid"
		:terms_for_use = "These data can be used freely for research purposes provided that the following source is acknowledged: institution"
		:disclaimer = "This data is made available in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
}

Mapping of SWAN names to CF standard names

For the complete list where we have to get names from, or have them added to is: http://cf-pcmdi.llnl.gov/documents/cf-standard-names/
This table is under construction, please fill in any missing UD units or CF standard names.

OVKEYW	OVSNAM	OVLNAM	OVUNIT	OVLLIM	OVULIM	OVEXCV	new: OVCFUD (UD units)	new: OVCFSN (standard name)
XP	Xp	X user coordinate	UL	-10000000000	10000000000	-10000000000	m	projection_x_coordinate,longitude
YP	Yp	Y user coordinate	UL	-10000000000	10000000000	-10000000000	m	projection_y_coordinate,latitude
DIST	Dist	distance along output curve	UL	0	10000000000	-99
DEP	Depth	Depth	UH	-100	100	-99		sea_floor_depth_below_sea_level
VEL	Vel	Current velocity	UV	-2	2	0		sea_water_x_velocity + sea_water_y_velocity alias: x_sea_water_velocity + y_sea_water_velocity
UBOT	Ubot	Orbital velocity at the bottom	UV	0	1	-10
DISS	Dissip	Energy dissipation	(in W/m2 or m2/s, depending on command INPUT.SET)	0	0.1	-9
QB	Qb	Fraction breaking waves		0	1	-1
LEA	Leak	Energy leak over spectral boundaries	m2/s	0	100	-9
HS	Hsig	Significant wave height	UH	0	10	-9	m	sea_surface_wave_significant_height alias: significant_height_of_wind_and_swell_waves, sea_surface_wind_wave_significant_height, alias: significant_height_of_wind_waves
TM01	Tm01	Average absolute wave period	UT	0	100	-9		sea_surface_wave_mean_period_from_variance_spectral_density_first_frequency_moment, sea_surface_wind_wave_mean_period_from_variance_spectral_density_first_frequency_moment
RTP	RTpeak	Relative peak period	UT	0	100	-9
DIR	Dir	Average wave direction	UDI	0	360	-999	degrees_true if nautical	sea_surface_wave_from_direction
PDI	PkDir	direction of the peak of the spectrum	UDI	0	360	-999
TDI	TDir	direction of the energy transport	UDI	0	360	-999
DSPR	Dspr	directional spreading	UDI	0	60	-9
WLEN	Wlen	Average wave length	UL	0	200	-9
STEE	Steepn	Wave steepness		0	0.1	-9
TRA	Transp	Wave energy transport	m3/s	-10	10	0
FOR	WForce	Wave driven force per unit surface	UF	-10	10	0
AAAA	AcDens	spectral action density	m2s	0	100	-99
EEEE	EnDens	spectral energy density	m2	0	100	-99
AAAA	Aux	auxiliary variable		-10000000000	10000000000	-10000000000
XC	Xc	X computational grid coordinate		0	100	-9	m	projection_x_coordinate,longitude
YC	Yc	Y computational grid coordinate		0	100	-9	m	projection_y_coordinate,latitude
WIND	Windv	Wind velocity at 10 m above sea level	UV	-50	50	0	m	wind_speed
FRC	FrCoef	Bottom friction coefficient		0	1	-9
RTM01	RTm01	Average relative wave period	UT	0	100	-9
EEEE	EnDens	energy density integrated over direction	m2	0	100	-99
DHS	dHs	difference in Hs between iterations	UH	0	1	-9
DRTM01	dTm	difference in Tm between iterations	UT	0	2	-9
TM02	Tm02	Zero-crossing period	UT	0	100	-9	s	sea_surface_wave_zero_upcrossing_period, sea_surface_wind_wave_zero_upcrossing_period, sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment, sea_surface_wind_wave_mean_period_from_variance_spectral_density_second_frequency_moment
FSPR	FSpr	Frequency spectral width (Kappa)		0	1	-9
URMS	Urms	RMS of orbital velocity at the bottom	UV	0	1	-9
UFRI	Ufric	Friction velocity	UV	0	1	-9
ZLEN	Zlen	Zero velocity thickness of boundary layer	UL	0	1	-9
TAUW	TauW			0	1	-9
CDRAG	Cdrag	Drag coefficient		0	1	-9
SETUP	Setup	Setup due to waves	m	-1	1	-9
TIME	Time	Date-time		0	1	-99999
TSEC	Tsec	Time in seconds from reference time	s	-100000	1000000	-99999		time
PER	Period	Average absolute wave period	UT	0	100	-9		sea_surface_wind_wave_period, alias: wind_wave_period
RPER	RPeriod	Average relative wave period	UT	0	100	-9
HSWE	Hswell	Wave height of swell part	UH	0	10	-9		sea_surface_swell_wave_significant_height alias: significant_height_of_swell_waves	sea_surface_swell_wave_period, alias: swell_wave_period
URSELL	Ursell	Ursell number		0	1	-9
ASTD	ASTD	Air-Sea temperature difference	K	-10	10	-99
TMM10	Tm_10	Average absolute wave period	UT	0	100	-9		sea_surface_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment, sea_surface_wind_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment
RTMM10	RTm_10	Average relative wave period	UT	0	100	-9
DIFPAR	DifPar	Diffraction parameter		-10	10	-99
TMBOT	TmBot	Bottom wave period	UT	0	100	-9
WATL	Watlev	Water level	UH	-100	100	-99
BOTL	Botlev	Bottom level	UH	-100	100	-99
TPS	TPsmoo	Relative peak period (smooth)	UT	0	100	-9
DISB	Disbot	Bottom friction dissipation	(in W/m2 or m2/s, depending on command INPUT.SET)	0	0.1	-9
DISSU	Dissrf	Wave breaking dissipation	(in W/m2 or m2/s, depending on command INPUT.SET)	0	0.1	-9
DISW	Diswcp	Whitecapping dissipation	(in W/m2 or m2/s, depending on command INPUT.SET)	0	0.1	-9
DISM	Dismud	Fluid mud dissipation	(in W/m2 or m2/s, depending on command INPUT.SET)	0	0.1	-9
WLENMR	Wlenmr	Average wave length with mud real part	UL	0	200	-9
KI	ki	Average wave number with mud imag part	rad/m	0	1	-9
MUDL	Mudlayer	Mudlayer thickness	UH	0	100	-99
VaDens	VaDens	spectral variance density	m2/Hz	0	100	-99	m2 s	sea_surface_wave_variance_spectral_density	integrated in sp1
VaDens	VaDens	spectral variance density	m2/Hz/degr	0	100	-99	m2 s degr-1	sea_surface_wave_directional_variance_spectral_density	per directional bin in sp2
Swind	Swind	wind source term	m2	0	100	-99
Swcap	Swcap	whitecapping dissipation	m2	0	100	-99
Sfric	Sfric	bottom friction dissipation	m2	0	100	-99
Smud	Smud	fluid mud dissipation	m2	0	100	-99
Ssurf	Ssurf	surf breaking dissipation	m2	0	100	-99
Snl3	Snl3	triad interactions	m2	0	100	-99
Snl4	Snl4	quadruplet interactions	m2	0	100	-99
KIMAG	KIMAG	Wave number with mud imag part	rad/m	NaN	NaN	NaN
KREAL	KREAL	Wave number with mud real part	rad/m	NaN	NaN	NaN
NDIR							s-1
CDIR							s-1
AFREQ							s-1	wave_frequency, sea_surface_wave_frequency
RFREQ							s-1	wave_frequency, sea_surface_wave_frequency
QP		peakedness of the wave spectrum (dimensionless).
BFI		Benjamin-Feir index (dimensionless).
PROPA	PROPAgat	sum of PROPXY, PROPTHETA and PROPSIGMA	(in W/m2 or m2/s, depending on command INPUT.SET).
PROPX	PROPXy	energy propagation in geographic space; sum of x- and y-direction, terms	(in W/m2 or m2/s, depending on command INPUT.SET).
PROPT	PROPTheta	energy propagation in theta space	(in W/m2 or m2/s, depending on command INPUT.SET).
PROPS	PROPSigma	energy propagation in sigma space	(in W/m2 or m2/s, depending on command INPUT.SET).
GENE	GENErat	total energy generation	(in W/m2 or m2/s, depending on command INPUT.SET).
GENW	GENWind	energy generation due to wind	(in W/m2 or m2/s, depending on command INPUT.SET).
REDI	REDIst	total energy redistribution	(in W/m2 or m2/s, depending on command INPUT.SET).
REDQ	REDQuad	energy redistribution due to quadruplets	(in W/m2 or m2/s, depending on command INPUT.SET).
REDT	REDTriad	energy redistribution due to triads	(in W/m2 or m2/s, depending on command INPUT.SET).
RADS	RADStr	energy transfer between waves and currents due to radiation stress	(in W/m2 or m2/s, depending on command INPUT.SET).

This table was generated with the Matlab code

Code Block


[D,D0] = swan_quantity % part of Openearth.eu[addrowcol(char(D0.OVKEYW),0,[-1 1],'|') char(D0.OVSNAM) addrowcol(char(D0.OVLNAM),0,[-1 1],'|') char(D0.OVUNIT) addrowcol(num2str(cell2mat(D0.OVLEXP')),0,[-1 1],'|') addrowcol(num2str(cell2mat(D0.OVHEXP')),0,[1],'|') addrowcol(num2str(cell2mat(D0.OVEXCV')),0,[1],'| | |')]

end
// ----------------- GLOBAL META_DATA -----------------
//global Attributes:
		:title = "INPUT.PROJECT.name,INPUT.PROJECT.nr"
		:institution = ""
		:source = ""
		:history = "Data produced by SWAN version 40.72AB"
		:references = ""
		:email = ""
		:comment = "INPUT.PROJECT.title1,INPUT.PROJECT.title2,INPUT.PROJECT.title3"
		:version = ""
		:Conventions = "CF-1.5"
		:CF:featureType = "Grid"
		:terms_of_use = "These data can be used freely for research purposes provided that the following source is acknowledged: institution"
		:disclaimer = "This data is made available in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
}

Mapping of SWAN names to CF standard names

SWAN Standard namesusing

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New Version Current

Key

SWAN netCDF-CF CDL scheme

Mapping of SWAN names to CF standard names

Mapping of SWAN names to CF standard names