Data Discovery (ECHO)

From Earth Science Information Partners (ESIP)

The NASA-developed Earth Observing System (EOS) Clearing House ([ECHO) is a spatial and temporal metadata registry and order broker built by NASA's Earth Science Data and Information System (ESDIS) that enables the science community to more easily use and exchange NASA's data and services. ECHO's main objective is to enable broader use of NASA's EOS data. It allows users to more efficiently search and access data and services and increases the potential for interoperability with new tools and services. The value of these resources increases as the potential to exchange and interoperate increases. ECHO has been working with other organizations to provide their Earth science metadata alongside NASA's for users to search and access. ECHO stores metadata from a variety of science disciplines and domains, including Climate Variability and Change, Carbon Cycle and Ecosystems, Earth Surface and Interior, Atmospheric Composition, Weather, and Water and Energy Cycle.

The ECHO metadata model focuses on data discovery and includes two sets of recommendations: Mandatory Fields and Recommended Fields. These recommendations are listed here along with xPaths to the recommended concepts in many metadata dialects.

ECHO for Data Discovery - Mandatory

This recommendation includes the required fields from Section 4.2 of the ECHO Data Partner's User Guide (Version 10.7).

Source: ECHO Data Partner's User Guide Other ECHO Documentation

ConceptDescriptionDialect (Fit) Paths
Resource TitleA short description of the resource. The title should be descriptive enough so that when a user is presented with a list of titles the general content of the data set can be determined.ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:title/gco:CharacterString
ECHO /*/echo:ShortName>/*/echo:LongName
DIF /dif:DIF/dif:Entry_Title
DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Title
ECS /*/ecs:ShortName > /*/ecs:LongName
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:citation/fgdc:citeinfo/fgdc:title
DCAT dct:title
VersionVersion of the cited resourceISO //gmd:CI_Citation/gmd:edition/gco:CharacterString
ISO-1 /mai:MI_Metadata/mdb:identificationInfo/rmd:MD_DataIdentification/mri:citation/cit:CI_Citation/cit:edition/gco:CharacterString
ECHO /*/echo:VersionId
DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Version
DIF /dif:DIF/dif:Reference/dif:Edition
ECS /*/ecs:VersionId
Publication DateDate of publication of the cited resourceISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='publication']/gmd:date/gco:Date
ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='publication']/gmd:date/gco:DateTime
ISO-1 //cit:CI_Citation/cit:date/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode='publication']/cit:date/gco:DateTime
ECHO /*/echo:InsertTime
DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Release_Date
DIF /dif:DIF/dif:Reference/dif:Publication_Date
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:citation/fgdc:citeinfo/fgdc:pubdate
DCAT dct:issued
Modified DateDate on which the record was created or updated within the catalogueISO /*/gmd:dateStamp/gco:Date
ISO /*/gmd:dateStamp/gco:DateTime
ISO-1 /mdb:MD_Metadata/mdb:dateInfo/cit:CI_Date[cit:dateType/cit:CI_DateTypeCode="lastUpdate"]/cit:date/gco:DateTime
ECHO /*/echo:LastUpdate
DIF /dif:DIF/dif:DIF_Creation_Date
ECS /*/ecs:RevisionDate
Resource Long NameThe reference name used in describing the scientific contents of the data collection.ECHO /*/echo:LongName
ECS /*/ecs:LongName
Resource IdentifierIdentifier for the resource described by the metadataISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:citation/cit:CI_Citation/cit:identifier/mcc:MD_Identifier/mcc:code/gco:CharacterString
ECHO /*/echo:DataSetId
ECHO (1) /*/echo:ShortName | /*/echo:LongName
DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_DOI
AbstractA paragraph describing the resource.

Note: This concept is called "Desciption" in Catalog Services for the Web.
ISO /*/gmd:identificationInfo/*/gmd:abstract/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:abstract/gco:CharacterString
ECHO /*/echo:Description
DIF /dif:DIF/dif:Summary/dif:Abstract
ECS /*/ecs:CollectionDescription
ECS /*/ecs:LongName
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:descript/fgdc:abstract
DCAT dct:description
Ordering InstructionsGeneral instructions, terms and services provided by the distributorISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributionOrderProcess/gmd:MD_StandardOrderProcess/gmd:orderingInstructions/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributor/mrd:MD_Distributor/mrd:distributionOrderProcess/mrd:MD_StandardOrderProcess/mrd:orderingInstructions/gco:CharacterString
ECHO /*/echo:Orderable
FGDC /fgdc:metadata/fgdc:distinfo/fgdc:distrib/fgdc:storder/fgdc:ordinst
Resource Access ConstraintsInformation about any constraints for accessing the data set. This includes any special restrictions, legal prerequisites, limitations and/or warnings on obtaining the data set. Some words that may be used in this field include: Public, In-house, Limited, Additional detailed instructions on how to access the data can be entered in this field.ISO /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:legalConstraints/gmd:MD_RestrictionCode
ISO /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:otherConstraints/gco:CharacterString
ISO /*/gmd:identificationInfo/srv:SV_ServiceIdentification/srv:restrictions/gmd:MD_LegalConstraints/gmd:legalConstraints/gco:CharacterString
ISO /*/gmd:identificationInfo/srv:SV_ServiceIdentification/srv:restrictions/gmd:MD_LegalConstraints/gmd:otherConstraints/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_Constraints
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_LegalConstraints
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:resourceConstraints/mco:MD_SecurityConstraints
ECHO /*/echo:RestrictionFlag
ECHO /*/echo:RestrictionComment
ECHO /*/echo:Visible
DIF /dif:DIF/dif:Access_Constraints
ECS /*/ecs:AccessConstraints
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:accconst


ECHO for Data Discovery - Recommended

This recommendation includes the recommended fields from Section 4.2 of the ECHO Data Partner's User Guide (Version 10.7).

Source: ECHO Data Partner's User Guide Other ECHO Documentation

ConceptDescriptionDialect (Fit) Paths
Processing LevelA code that indicates the extent of processing done in the creation of a dataset.ISO /*/gmd:contentInfo/gmd:MD_ImageDescription/gmd:processingLevelCode/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:processingLevel/mcc:MD_Identifier/mcc:code/gco:CharacterString
ECHO /*/echo:ProcessingLevelId
ECS /*/ecs:ProcessingLevelId
Resource Cost or FeesCost associated with access to the resourceISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributionOrderProcess/gmd:MD_StandardOrderProcess/gmd:fees/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributionFormat/mrd:MD_Format/mrd:formatDistributor/mrd:MD_Distributor/mrd:distributionOrderProcess/mrd:MD_StandardOrderProcess/mrd:fees/gco:CharacterString
ECHO /*/echo:Price
DIF /dif:DIF/dif:Distribution/dif:Fees
FGDC /fgdc:metadata/fgdc:distinfo/fgdc:distrib/fgdc:storder/fgdc:fees
Temporal KeywordKeyword identifies a time period related to the resource.ECHO /*/echo:TemporalKeywords/echo:Keyword
Temporal ExtentThe temporal extent of the resourceISO /*/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent
ISO-1 /*/mri:MD_DataIdentification/mri:extent/gex:EX_Extent/gex:temporalElement/gex:EX_TemporalExtent
ECHO /*/Temporal/RangeDateTime
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:timeperd/fgdc:timeinfo/fgdc:rngdates
Resource ContactThe organization or person responsible for answering questions about the resource.ISO /*/gmd:identificationInfo/*/gmd:pointOfContactPro
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:pointOfContact/cit:CI_Responsibility[cit:role/cit:CI_RoleCode='pointOfContact']
ECHO /*/echo:Contacts/echo:Contact
DIF /dif:DIF/dif:Personnel[dif:Role='INVESTIGATOR']
ECS /CollectionMetaDataFile/CollectionMetaDataSets/Collections/CollectionMetaData/Contact[Role='User Services']
DCAT dct:person
KeywordA word or phrase that describes some aspect of a resource. Can be one of several types.

Note: The general identification keywords usually have a type of "theme" and are refered to as "theme keywords". Other types and vocabularies are used for other information. Service Entry Resource Format (SERF) requires a Science and a Service GCMD Keyword. This concept is called "Subject" in the CSW Specification.
ISO (1) /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[gmd:type/gmd:MD_KeywordTypeCode='theme']/gmd:keyword/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:MD_KeywordTypeCode='theme']/mri:keyword/gco:CharacterString
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:CategoryKeyword
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TopicKeyword
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TermKeyword
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel1Keyword/echo:Value
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel2Keyword/echo:Value
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel3Keyword
ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:DetailedVariableKeyword
DIF (1) /dif:DIF/dif:Parameters/dif:Category
DIF (1) /dif:DIF/dif:Parameters/dif:Topic
DIF (1) /dif:DIF/dif:Parameters/dif:Term
DIF (1) /dif:DIF/dif:Parameters/dif:Variable_Level_1
DIF (1) /dif:DIF/dif:Parameters/dif:Variable_Level_2
DIF (1) /dif:DIF/dif:Parameters/dif:Variable_Level_3
DIF (1) /dif:DIF/dif:Parameters/dif:Detailed_Variable
ECS (1) /*/ecs:DisciplineTopicParameters/ecs:DisciplineKeyword
ECS (1) /*/ecs:DisciplineTopicParameters/ecs:TopicKeyword
ECS (1) /*/ecs:DisciplineTopicParameters/ecs:TermKeyword
ECS (1) /*/ecs:DisciplineTopicParameters/ecs:VariableKeyword
FGDC (1) /fgdc:metadata/fgdc:idinfo/fgdc:keywords/fgdc:theme/fgdc:themekey
Platform KeywordKeywords that describe the platform used to collect the resource.ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[gmd:type/gmd:MD_KeywordTypeCode='platform']/gmd:keyword/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:descriptiveKeywords/mri:MD_Keywords[mri:type/mri:MD_KeywordTypeCode='platform']/mri:keyword/gco:CharacterString
ECHO //echo:Platforms/echo:Platform/echo:ShortName
ECHO //echo:Platforms/echo:Platform/echo:LongName
ECS /*/ecs:Platform/ecs:PlatformShortName
ECS /*/ecs:Platform/ecs:PlatformLongName
Instrument TypeThe type of instrument.ISO /gmi:MI_Metadata/gmi:acquisitionInformation/gmi:MI_AcquisitionInformation/gmi:instrument/gmi:MI_Instrument/gmi:type/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:acquisitionInformation/mac:MI_AcquisitionInformation/mac:instrument/mac:MI_Instrument/mac:type/gco:CharacterString
ECHO (1) /echo:Collection/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:Type
Sensor CharacteristicsReferential information for the collection source/sensor configuration.ISO /*/gmi:acquisitionInformation/gmi:MI_AcquisitionInformation/gmi:instrument/gmi:MI_Instrument/gmi:citation
ISO-1 /mdb:MD_Metadata/mdb:acquisitionInformation/mac:MI_AcquisitionInformation/mac:instrument/mac:MI_Instrument/mac:citation
ECHO /*/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:Sensors/echo:Sensor/echo:Characteristics
ECS /*/ecs:Sensor/ecs:Characteristics
Related Resource IdentifierIdentifier for a resource related to the resource being described.ISO (1) /*/gmd:identificationInfo/*/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetIdentifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO (1) /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicDescription/gmd:geographicIdentifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO (1) /*/gmd:identificationInfo/*/gmd:processingLevel/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO (1) /*/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:report/gmd:DQ_AccuracyOfATimeMeasurement/gmd:measureIdentification/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO (1) /gmi:MI_Metadata/gmi:acquisitionInformation/eos:EOS_AcquisitionInformation/gmi:operation/gmi:MI_Operation/gmi:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO (1) /gmi:MI_Metadata/gmi:acquisitionInformation/gmi:MI_AcquisitionInformation/gmi:platform/gmi:MI_Platform/gmi:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO (1) /gmi:MI_Metadata/gmi:acquisitionInformation/gmi:MI_AcquisitionInformation/gmi:instrument/gmi:MI_Instrument/gmi:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO /gmi:MI_Metadata/gmi:acquisitionInformation/eos:EOS_AcquisitionInformation/eos:sensor/eos:EOS_Sensor/eos:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:associatedResource/mri:MD_AssociatedResource/mri:name/cit:CI_Citation/cit:identifier/mcc:MD_Identifier/mcc:code/gco:CharacterString
ECHO (1) /*/echo:ShortName
ECHO (1) /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:ZoneIdentifier
ECHO (1) /*/echo:ProcessingLevelId
ECHO (1) /*/echo:Campaigns/echo:Campaign/echo:ShortName | /*/echo:Campaigns/echo:Campaign/echo:LongName
ECHO (1) /*/echo:Platforms/echo:Platform/echo:ShortName | /*/echo:Platforms/echo:Platform/echo:LongName
ECHO (1) /*/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:ShortName | /echo:*/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:LongName
ECHO (1) /*/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:Sensors/echo:Sensor/echo:ShortName | /*/echo:Platforms/echo:Platform/echo:Instruments/echo:Instrument/echo:Sensors/echo:Sensor/echo:LongName
ECHO (1) /*/echo:AssociatedDIFs/echo:DIF/echo:EntryId
TwoDCoordinateSystemBounding extent defined in two dimensions with min and max values.ECHO /*/echo:TwoDCoordinateSystems/echo:TwoDCoordinateSystem
Data LinkA link to data produced by the project.ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorTransferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource[gmd:function/gmd:CI_OnLineFunctionCode='download']
ISO /*/gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource[gmd:function/gmd:CI_OnLineFunctionCode='download']
ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributor/mrd:MD_Distributor/mrd:distributorTransferOptions/mrd:MD_DigitalTransferOptions/mrd:onLine/cit:CI_OnlineResource[cit:function/cit:CI_OnLineFunctionCode='download']
ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:transferOptions/mrd:MD_DigitalTransferOptions/mrd:onLine/cit:CI_OnlineResource[cit:function/cit:CI_OnLineFunctionCode='download']
ECHO /echo:Collection/echo:OnlineAccessURLs/echo:OnlineAccessURL
DIF /dif:DIF/dif:Related_URL
FGDC /fgdc:metadata/fgdc:distinfo/fgdc:stdorder/fgdc:digform/fgdc:digtopt/fgdc:onlinopt/fgdc:computer/fgdc:networka/fgdc:networkr
Resource on-line LinkOnline link referencing additional information about the resource.ISO /*/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource
ISO-1 /*/mri:MD_DataIdentification/mri:citation/cit:CI_Citation/cit:onlineResource/cit:CI_OnlineResource
ECHO /*/OnlineResources
AssociatedDIFsSpecifies the Directory Interchange Format (DIF) identifier for the collection.ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:associatedResource/mri:MD_AssociatedResource/mri:name/cit:CI_Citation/cit:identifier/mcc:MD_Identifier/mcc:code/gco:CharacterString
ECHO /*/echo:AssociatedDIFs
Spatial ExtentThe spatial extent of the resource.ISO /*/mri:MD_DataIdentification/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:extent/gex:EX_Extent/gex:geographicElement/gex:EX_GeographicBoundingBox
ECHO /*/Spatial/HorizontalSpatialDomain/Geometry
Distribution ContactContact information for the organization or individual that distributes the resource.ISO /gmd:MD_Metadata/gmd:distributionInfo/gmd:MD_Distribution/gmd:distributor/gmd:MD_Distributor/gmd:distributorContact/gmd:CI_ResponsibleParty
ISO-1 /mdb:MD_Metadata/mdb:distributionInfo/mrd:MD_Distribution/mrd:distributor/mrd:MD_Distributor/mrd:distributorContact/cit:CI_Responsibility
ECHO /*/echo:ArchiveCenter
DIF /dif:DIF/dif:Data_Center/dif:Personnel/dif:Role
ECS /*/ecs:ArchiveCenter
FGDC /fgdc:metadata/fgdc:distinfo/fgdc:distrib/fgdc:cntinfo
Additional AttributesAttributes used to describe unique characteristics of the collection which extend beyond those defined in the model.ISO-1 /*/eos:additionalAttribute/eos:EOS_AdditionalAttribute/eos:reference/eos:EOS_AdditionalAttributeDescription
ECHO /*/echo:AdditionalAttributes/echo:AdditionalAttribute
ECS /*/ecs:AdditionalAttributes/ecs:AdditionalAttribute
Browse File NameName of the file holding the browse graphic.ISO /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:graphicOverview/gmd:MD_BrowseGraphic/gmd:fileName/gco:CharacterString
ISO-1 /mdb:MD_Metadata/mdb:identificationInfo/*/mri:graphicOverview/mcc:MD_BrowseGraphic/mcc:fileName/gco:CharacterString
ECHO /*/echo:AssociatedBrowseImages/echo:ProviderBrowseId
DIF /dif:DIF/dif:Multimedia_Sample/dif:File
FGDC /fgdc:metadata/fgdc:idinfo/fgdc:browse/fgdc:browsen