Exporting THREDDS Datasets to Digital Libraries

Datasets that have enough information to create Digital Library entries are called enhanced datasets. The following shows how THREDDS fields are mapped to DIF and to ADN records. Only if all the required fields are present will a DL entry be generated.

Exporting THREDDS Datasets to DIF

Required Fields

Dataset Field	DIF Field	Notes
authority + ID	Entry_ID
name	Entry_Title
variables, vocabulary="DIF"	Parameters	encode as "Category > Topic > Term > Variable > Detailed Variable"
publisher	Data_Center	what about Originating_Center?
abstract	Summary	documentation, role="summary" or "abstract" better ??

Optional Fields

Dataset Field	DIF Field	Notes
keyword	Keywords	uses all keywords, not just vocabulary="DIF"
timeCoverage	Temporal_Coverage	DIF cant handle reletive dates
geospatialCoverage	Spatial_Coverage
rights	Use_Constraints
	Related_URL	refers to dynamic page generated by THREDDS server
	DIF_Creation_Date	generated automatically

Other Possible

Dataset Field	DIF Field	Notes
size	Distribution_Size
dataFormat	Distribution_Format	multiple possible
service	Distribution_Media	multiple possible
contributor	Personell	role= "Investigator", "Technical Contact", "DIF Author" only
	Source_Name	Platform valids
project	Project	Project valids
	Sensor_Name	Instrument valids

Exporting THREDDS Datasets to ADN

Required Fields

Dataset Field	ADN Field	Notes
name	general/title
abstract	general/description
	general/language	fixed "en"
	general/subjects	fixed "DLESE:Atmospheric science"
publisher	lifecycle/contributor role="Publisher"	DLESE email is constrained
authority + ID	metaMetadataType/catalogEntries/entry
	metaMetadataType/catalogEntries/catalog	not clear what this is
	metaMetadataType/dateInfo	generated
	metaMetadataType/statusOf	fixed "accessioned"
	metaMetadataType/languange	fixed "en"
	metaMetadataType/scheme	fixed "ADN"
	metaMetadataType/copyright	fixed "Public Domain"
	metaMetadataType/termsOfUse	fixed "Public Domain"
	technical/online/PrimaryURL	refers to dynamic page generated by THREDDS server
	technical/online/medium	fixed "text/html" (refers to PrimaryURL)
	technical/online/requirement	fixed "Netscape" (refers to PrimaryURL)
	educational/audience/gradeRange	fixed: "DLESE:Graduate or professional"
dataType	educational/resourceTypes	DLESE:Data: "In situ dataset", "Modeled dataset" or "Remotely sensed dataset"
	rights/cost	fixed: "DLESE:No"
rights	rights/description

Optional Fields

Dataset Field	ADN Field	Notes
keyword	general/keywords	uses all keywords
size	technical/size	not done
	technical/description	??
geospatialCoverage	geospatialCoverages	not done
timeCoverage	temporalCoverages	not done

This document is maintained by Unidata. Send comments to THREDDS support. Last updated: June 2004