netcdf NODC_trajectory {
dimensions:
obs = <dim1>;
trajectory = <dim2>;
variables:
int trajectory(trajectory); //....................................... RECOMMENDED - If using the attribute below: cf_role. Data type can be whatever is appropriate for the unique feature type.
trajectory:long_name = "Unique identifier for each feature instance"; //................................ RECOMMENDED
trajectory:cf_role = "trajectory_id"; //..................... RECOMMENDED
double time(trajectory,obs) ;//........................................ Depending on the precision used for the variable, the data type could be int or double instead of float.
time:long_name = "" ; //..................................... RECOMMENDED - Provide a descriptive, long name for this variable.
time:standard_name = "time" ; //............................. REQUIRED - Do not change
time:units = "seconds since 1970-01-01 00:00:00 0:00" ; //... REQUIRED - Use approved CF convention with approved UDUNITS.
time:calendar = "julian" ; //................................ REQUIRED - IF the calendar is not default calendar, which is "gregorian".
time:axis = "T" ; //......................................... REQUIRED - Do not change.
time:_FillValue = 0.0f;//.................................... REQUIRED if there could be missing values in the data.
time:ancillary_variables = "" ; //........................... RECOMMENDED - List other variables providing information about this variable.
time:comment = "" ; //....................................... RECOMMENDED - Add useful, additional information here.
float lat(trajectory,obs) ;//....................................... Depending on the precision used for the variable, the data type could be int or double instead of float.
lat:long_name = "" ; //...................................... RECOMMENDED - Provide a descriptive, long name for this variable.
lat:standard_name = "latitude" ; //.......................... REQUIRED - Do not change.
lat:units = "degrees_north" ; //............................. REQUIRED - CF recommends degrees_north, but at least must use UDUNITS.
lat:axis = "Y" ; //.......................................... REQUIRED - Do not change.
lat:valid_min = 0.0f ; //.................................... RECOMMENDED - Replace with correct value.
lat:valid_max = 0.0f ; //.................................... RECOMMENDED - Replace with correct value.
lat:_FillValue = 0.0f;//..................................... REQUIRED if there could be missing values in the data.
lat:ancillary_variables = "" ; //............................ RECOMMENDED - List other variables providing information about this variable.
lat:comment = "" ; //........................................ RECOMMENDED - Add useful, additional information here.
float lon(trajectory,obs) ; //........................................ Depending on the precision used for the variable, the data type could be int or double instead of float.
lon:long_name = "" ; //...................................... RECOMMENDED
lon:standard_name = "longitude" ; //......................... REQUIRED - This is fixed, do not change.
lon:units = "degrees_east" ; //.............................. REQUIRED - CF recommends degrees_east, but at least use UDUNITS.
lon:axis = "X" ; //.......................................... REQUIRED - Do not change.
lon:valid_min = 0.0f ; //.................................... RECOMMENDED - Replace this with correct value.
lon:valid_max = 0.0f ; //.................................... RECOMMENDED - Replace this with correct value.
lon:_FillValue = 0.0f;//..................................... REQUIRED if there could be missing values in the data.
lon:ancillary_variables = "" ; //............................ RECOMMENDED - List other variables providing information about this variable.
lon:comment = "" ; //........................................ RECOMMENDED - Add useful, additional information here.
float z(trajectory,obs) ;//........................................ Depending on the precision used for the variable, the data type could be int or double instead of float. Also the variable "z" could be substituted with a more descriptive name like "depth", "altitude", "pressure", etc.
z:long_name = "" ; //........................................ RECOMMENDED - Provide a descriptive, long name for this variable.
z:standard_name = "" ; //.................................... REQUIRED - Usually "depth" or "altitude" is used.
z:units = "" ; //............................................ REQUIRED - Use UDUNITS.
z:axis = "Z" ; //............................................ REQUIRED - Do not change.
z:positive = "" ; //......................................... REQUIRED - Use "up" or "down".
z:valid_min = 0.0f ; //...................................... RECOMMENDED - Replace with correct value.
z:valid_max = 0.0f ; //...................................... RECOMMENDED - Replace with correct value.
z:_FillValue = 0.0f;//....................................... REQUIRED if there could be missing values in the data.
z:ancillary_variables = "" ; //.............................. RECOMMENDED - List other variables providing information about this variable.
z:comment = "" ; //.......................................... RECOMMENDED - Add useful, additional information here.
float geophysical_variable_1(trajectory,obs) ;//................................ This is an example of how each and every geophysical variable in the file should be represented. Replace the name of the variable("geophysical_variable_1") with a suitable name. Replace "float" by data type which is appropriate for the variable.
geophysical_variable_1:long_name = "" ; //................... RECOMMENDED - Provide a descriptive, long name for this variable.
geophysical_variable_1:standard_name = "" ; //............... REQUIRED - If using a CF standard name and a suitable name exists in the CF standard name table.
geophysical_variable_1:nodc_name = "" ; //................... RECOMMENDED - From the NODC variables vocabulary, if standard_name does not exist.
geophysical_variable_1:units = "" ; //....................... REQUIRED - Use UDUNITS compatible units.
geophysical_variable_1:scale_factor = 0.0f ; //.............. REQUIRED if the data uses a scale_factor other than 1.The data type should be the data type of the variable.
geophysical_variable_1:add_offset = 0.0f ; // ............... REQUIRED if the data uses an add_offset other than 0. The data type should be the data type of the variable.
geophysical_variable_1:_FillValue = 0.0f ; //................ REQUIRED if there could be missing values in the data.
geophysical_variable_1:valid_min = 0.0f ; //................. RECOMMENDED - Replace with correct value.
geophysical_variable_1:valid_max = 0.0f ; //................. RECOMMENDED - Replace with correct value.
geophysical_variable_1:coordinates = "time lat lon z" ; //... REQUIRED - Include the auxiliary coordinate variables and optionally coordinate variables in the list. The order itself does not matter. Also, note that whenever any auxiliary coordinate variable contains a missing value, all other coordinate, auxiliary coordinate and data values corresponding to that element should also contain missing values.
geophysical_variable_1:grid_mapping = "crs" ; //............. RECOMMENDED - It is highly recommended that the data provider put the data in a well known geographic coordinate system and provide the details of the coordinate system.
geophysical_variable_1:source = "" ; //...................... RECOMMENDED - The method of production of the original data
geophysical_variable_1:references = "" ; //.................. RECOMMENDED - Published or web-based references that describe the data or methods used to produce it.
geophysical_variable_1: cell_methods = "" ; // .............. RECOMMENDED - Use the coordinate variables to define the cell values (ex., "time: point lon: point lat: point z: point").
geophysical_variable_1:ancillary_variables = "instrument_parameter_variable platform_variable boolean_flag_variable enumerated_flag_variable" ; //......... RECOMMENDED - Identify the variable name(s) of the flag(s) and other ancillary variables relevant to this variable. Use a space-separated list.
geophysical_variable_1:platform = "platform_variable" ; //... RECOMMENDED - Refers to name of variable containing information on the platform from which this variable was collected.
geophysical_variable_1:instrument = "instrument_variable";//..RECOMMENDED - Refers to name of variable containing information on the instrument from which this variable was collected.
geophysical_variable_1:comment = "" ; //..................... RECOMMENDED - Add useful, additional information here.
byte boolean_flag_variable(trajectory,obs); //............................. A boolean flag variable, in which each bit of the flag can be a 1 or 0.
boolean_flag_variable:standard_name= "" ; //................. RECOMMENDED - This attribute should include the standard name of the variable which this flag contributes plus the modifier: "status_flag" (for example, "sea_water_temperature status_flag"). See CF standard name modifiers.
boolean_flag_variable:long_name = "" ; //.................... RECOMMENDED - Provide a descriptive, long name for this variable.
boolean_flag_variable:flag_masks = ; //...................... REQUIRED - Provide a comma-separated list describing the binary condition of the flags.
boolean_flag_variable:flag_meanings = "" ; //................ REQUIRED - Provide a comma-separated list of flag values that map to the flag_masks.
boolean_flag_variable:references = "" ; //................... RECOMMENDED - Published or web-based references that describe the data or methods used to produce it.
boolean_flag_variable:comment = "" ; //...................... RECOMMENDED - Add useful, additional information here.
int enumerated_flag_variable(trajectory,obs); //...................... An enumerated flag variable, in which numeric values refer to defined, exclusive conditions.
enumerated_flag_variable:standard_name= "" ; //.............. RECOMMENDED - This attribute should include the standard name of the variable which this flag contributes plus the modifier: "status_flag" (for example, "sea_water_temperature status_flag"). See CF standard name modifiers.
enumerated_flag_variable:long_name = "" ; //................. RECOMMENDED - Provide a descriptive, long name for this variable.
enumerated_flag_variable:flag_values = ; //.................. REQUIRED - Provide a comma-separated list of flag values that map to the flag_meanings.
enumerated_flag_variable:flag_meanings = "" ; //............. REQUIRED - Provide a space-separated list of meanings corresponding to each of the flag_values
enumerated_flag_variable:references = "" ; //................ RECOMMENDED - Published or web-based references that describe the data or methods used to produce it.
enumerated_flag_variable:comment = "" ; //................... RECOMMENDED - Add useful, additional information here.
int platform_variable; //............................................ RECOMMENDED - a container variable storing information about the platform. If more than one, can expand each attribute into a variable. For example, platform_call_sign and platform_nodc_code. See instrument_parameter_variable for an example.
platform_variable:long_name = "" ; //........................ RECOMMENDED - Provide a descriptive, long name for this variable.
platform_variable:comment = "" ; //.......................... RECOMMENDED - Add useful, additional information here.
platform_variable:call_sign = "" ; //........................ RECOMMENDED - This attribute identifies the call sign of the platform.
platform_variable:nodc_code = ""; //......................... RECOMMENDED - This attribute identifies the NODC code of the platform. Look at http://www.nodc.noaa.gov/cgi-bin/OAS/prd/platform to find if NODC codes are available.
platform_variable:wmo_code = "";//........................... RECOMMENDED - This attribute identifies the wmo code of the platform. Information on getting WMO codes is available at http://www.wmo.int/pages/prog/amp/mmop/wmo-number-rules.html
platform_variable:imo_code = "";//.......................... RECOMMENDED - This attribute identifies the International Maritime Organization (IMO) number assigned by Lloyd's register.
int instrument_parameter_variable(trajectory); //.................... RECOMMENDED - an instrument variable storing information about a parameter of the instrument used in the measurement, the dimensions don't have to be specified if the same instrument is used for all the measurements.
instrument_parameter_variable:long_name = "" ; //............ RECOMMENDED - Provide a descriptive, long name for this variable.
instrument_parameter_variable:comment = "" ; //.............. RECOMMENDED - Add useful, additional information here.
int crs; //.......................................................... RECOMMENDED - A container variable storing information about the grid_mapping. All the attributes within a grid_mapping variable are described in http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/cf-conventions.html#appendix-grid-mappings. For all the measurements based on WSG84, the default coordinate system used for GPS measurements, the values shown here should be used.
crs:grid_mapping_name = "latitude_longitude"; //............. RECOMMENDED
crs:epsg_code = "EPSG:4326" ; //............................. RECOMMENDED - European Petroleum Survey Group code for the grid mapping name.
crs:semi_major_axis = 6378137.0 ; //......................... RECOMMENDED
crs:inverse_flattening = 298.257223563 ; //.................. RECOMMENDED
// global attributes:
:Conventions = "CF-1.6" ; //......................................... REQUIRED - Always try to use latest value. (CF)
:Metadata_Conventions = "Unidata Dataset Discovery v1.0" ; //........ REQUIRED - Do not change. (ACDD)
:featureType = "trajectory" ; //..................................... REQUIRED - CF attribute for identifying the featureType.
:cdm_data_type = "Trajectory" ; //................................... REQUIRED (ACDD)
:nodc_template_version = "NODC_NetCDF_Trajectory_Template_v1.1" ; //....... REQUIRED (NODC)
:standard_name_vocabulary = "NetCDF Climate and Forecast (CF) Metadata Convention Standard Name Table "X"" ; //........ REQUIRED - If using CF standard name attribute for variables. "X" denotes the table number (ACDD)
:title = "" ; //..................................................... RECOMMENDED - Provide a useful title for the data in the file. (ACDD)
:summary = "" ; //................................................... RECOMMENDED - Provide a useful summary or abstract for the data in the file. (ACDD)
:source = "" ; //.................................................... RECOMMENDED - The input data sources regardless of the method of production method used. (CF)
:platform = "platform_variable" ; //................................. RECOMMENDED - Refers to a variable containing information about the platform. May also put this in individual variables. Use NODC or ICES platform table. (NODC)
:instrument = "instrument_parameter_variable" ; //................... RECOMMENDED - Refers to a variable containing information about the instrument. May also put this in individual variables. Use NODC or GCMD instrument table. (NODC)
:uuid = "" ; //...................................................... RECOMMENDED - Machine readable unique identifier for each file. A new uuid is created whenever the file is changed. (NODC)
:sea_name = "" ; //.................................................. RECOMMENDED - The names of the sea in which the data were collected. Use NODC sea names table. (NODC)
:id = "" ; //........................................................ RECOMMENDED - Should be a human readable unique identifier for data set. (ACDD)
:naming_authority = "" ; //.......................................... RECOMMENDED - Backward URL of institution (for example, gov.noaa.nodc). (ACDD)
:time_coverage_start = "" ; //....................................... RECOMMENDED - Use ISO8601 for date and time. (ACDD)
:time_coverage_end = "" ; //......................................... RECOMMENDED - Use ISO8601 for date and time.(ACDD)
:time_coverage_resolution = "" ; //.................................. RECOMMENDED - For example, "point" or "minute averages". (ACDD)
:geospatial_lat_min = 0.0f ; //...................................... RECOMMENDED - Replace with correct value. (ACDD)
:geospatial_lat_max = 0.0f ; //...................................... RECOMMENDED - Replace with correct value. (ACDD)
:geospatial_lat_units = "degrees_north" ; //......................... RECOMMENDED - Use UDUNITS compatible units. (ACDD)
:geospatial_lat_resolution= "" ; //.................................. RECOMMENDED - For example, "point" or "10 degree grid". (ACDD)
:geospatial_lon_min = 0.0f ; //...................................... RECOMMENDED - Replace with correct value. (ACDD)
:geospatial_lon_max = 0.0f ; //...................................... RECOMMENDED - Replace with correct value. (ACDD)
:geospatial_lon_units = "degrees_east"; //........................... RECOMMENDED - Use UDUNITS compatible units. (ACDD)
:geospatial_lon_resolution= "" ; //.................................. RECOMMENDED - For example, "point" or "10 degree grid". (ACDD)
:geospatial_vertical_min = 0.0f ; //................................. RECOMMENDED - Replace with correct value. (ACDD)
:geospatial_vertical_max = 0.0f ; //................................. RECOMMENDED - Replace with correct value. (ACDD)
:geospatial_vertical_units = "" ; //................................. RECOMMENDED - Use UDUNITS compatible units. (ACDD)
:geospatial_vertical_resolution = "" ; //............................ RECOMMENDED - For example, "point" or "1 meter binned". (ACDD)
:geospatial_vertical_positive = "" ; //.............................. RECOMMENDED - Use "up" or "down". (ACDD)
:institution = "" ; //............................................... RECOMMENDED - Institution of the person or group that collected the data. An institution attribute can be used for each variable if variables come from more than one institution. (ACDD)
:creator_name = "" ; //.............................................. RECOMMENDED - Name of the person who collected the data. (ACDD)
:creator_url = "" ; //............................................... RECOMMENDED - URL for person who collected the data. (ACDD)
:creator_email = "" ; //............................................. RECOMMENDED - Email address for person who collected the data. (ACDD)
:project = "" ; //................................................... RECOMMENDED - Project the data was collected under. (ACDD)
:processing_level = "" ; //.......................................... RECOMMENDED - Provide a description of the processing or quality control level of the data. (ACDD)
:references = "" ; //................................................ RECOMMENDED - Published or web-based references that describe the data or methods used to produce it. (CF)
:keywords_vocabulary = "" ; //....................................... RECOMMENDED - Identifies the controlled keyword vocabulary used to specify the values within the attribute "keywords". e.g. NASA/GCMD Earth Science Keywords. (ACDD)
:keywords = "" ; //.................................................. RECOMMENDED - A comma separated list of keywords coming from the keywords_vocabulary. (ACDD)
:acknowledgment = "" ; //............................................ RECOMMENDED - Text to use to properly acknowledge use of the data. (ACDD)
:comment = "" ; //................................................... RECOMMENDED - Provide useful additional information here. (ACDD and CF)
:contributor_name = "" ; //.......................................... RECOMMENDED - A comma separated list of contributors to this data set. (ACDD)
:contributor_role = "" ; //.......................................... RECOMMENDED - A comma separated list of their roles. (ACDD)
:date_created = "" ; //.............................................. RECOMMENDED - Creation date of the netCDF. Use ISO8601 for date and time. (ACDD)
:date_modified = "" ; //............................................. RECOMMENDED - Modification date of the netCDF. Use ISO8601 for date and time. (ACDD)
:publisher_name = "" ; //............................................ RECOMMENDED - Publisher of the data. (ACDD)
:publisher_email = "" ; //........................................... RECOMMENDED - Email address of the publisher of the data. (ACDD)
:publisher_url = "" ; //............................................. RECOMMENDED - A URL for the publisher of the data. (ACDD)
:history = "" ; //................................................... RECOMMENDED - Record changes made to the netCDF. (ACDD)
:license = "" ; //................................................... RECOMMENDED - Describe the restrictions to data access and distribution. (ACDD)
:metadata_link = "" ; //............................................. RECOMMENDED - This attribute provides a link to a complete metadata record for this data set or the collection that contains this data set. (ACDD)
}