Metadata templates and patterns Sergey Sukhonosov, Dr. Sergey Belov National Oceanographic Data Centre, Russia Training course on establishment of the ODP regional node and data network for SNDM-Argentina, October 2013, Buenos Aires, Argentina

2 Metadata templates Use registered metadata as a template to create similar metadata

3 Metadata patterns Data presentation and dissemination: - fixed point (data series for points fixed in space); - trajectory (data series of vector representation); - region (data series for regions with the predetermined 4 or more boundary coordinates, test sites); - grid (series of grid point data) - spatial presentation is not defined (data are not systematized or this attribute of description cannot be used). Examples: - fixed point – data from meteorological stations, ports, etc. - trajectory – data from RV cruises, satellite passes, sections, etc. - region – data for administrative regions, districts, etc. - grid – 1-degree grid point data, 50-km grid point data, etc.

4 Metadata patterns Time presentation – defines time frequency of data presentation; every hour, every day, every month, etc. Vertical presentation – defines presentation of data by height (depth): nonstandard levels, layer, surface (sea, land), standard levels, not identified. Data quality description – plain text provide brief information on quality control of the data set represented by the resource. If the document describing quality control procedures is available, give its URL. Subsection (4): Data dissemination Periodicity of data source updating – defines the periodicity of local data set (DBMS database, data file) updating: every hour, every day, every month, other. Data presentation form – Defines data presentation form: - digital table, profile and model – structured data - digital map – shape-files in vector format; - digital document – any electronic document in formats MSWord, Acrobat, HTML; - digital presentation – any presentation including raster format maps; - digital video

5 Metadata patterns Data presentation format and format version – defines the data format. Codes contain only self-documenting formats (structures and languages) and multimedia formats; for specific formats one code is identified - localFormat, undefined. Examples: NetCDF,v.3, HDF, v.4, BUFR,undefined, UiDF, text/plain,undefined, text/xml,undefined, application/msword, undefined, application/pdf, undefined, image/tiff,undefined, video/avi,undefined, application/arcview, v.9 Media on which it is possible to obtain data (not on-line) – defines type of media on which data can be obtained on request (CD, DVD, etc.). Conditions of access to information – defines conditions of access to data by categories: - “free information” (available for all users without any conditions) or “information provided to specific users” Conditions of information use – c ondition of information use are fixed – Sets the conditions for use of the information considering copyrights, or rights of ownership

6 Metadata patterns Date/time of beginning – Defines date/time of data beginning in the resource (resource instance). This attribute has a pattern: “YYYY-MM-DD:’T’hh-mm” set by the mask “date/time” depending on the attributes “Level of data processing”, “Time presentation” (the section “Presentation and dissemination”). If the type of physical data storage is DBMS and SDF, the value of elements is updated automatically following resource scheduler. Date/time of end – similar to date/time of beginning Minimum height (depth) – defines minimum value of height of observations in data. Height has “+” sign, depth has “-“ sign. Default units of measurements are meters (integer). Maximum height (depth) – similar to minimum height (depth)

7 Metadata patterns Identifier of geographic area, name of geographic area – defines geographic areas for the data contained in the resource. Choices are defined by system dictionaries: oceans and seas; cities; countries Geographic coordinates – defines 4 boundary coordinates (+north/east, -south/west) of the geographic region enclosing the data. If the type of physical data storage system is DBMS and SDF, boundary coordinates are updated automatically with periodicity set by resource scheduler.

8 Metadata patterns There are 3 types roles for contacts: Originator – defines organization which is the data owner; Resource provider – defines organization which is responsible for providing the data; Point of contact – defines the organization and a person who prepared the description

9 Metadata patterns Data granularity setup It depends on metadata field “Distribution type”

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