Difference between revisions of "ISO 19115 Metadata for Air Quality"

Latest revision as of 13:54, June 4, 2012

ISO_19115_Metadata_for_Air_Quality Description: ISO 19115 is the metadata standard for Geographic information. The AQ Community chose ISO 19115 because it is a standard accepted by GEOSS and being implemented widely around the world. It includes the ISO 19115 Core, 19119 metadata for describing the geospatial services and AQ-specific metadata for finding datasets.

Glossary Domain: WCS, HTAP, AQInfrastructure

Contributors

Erin Robinson, CAPITA; Ted Habermann, NOAA; Wenli Yang, NASA; Chris Lynnes, NASA;

History

Jan-May, 2009 First AQ Community Catalog Record Created
May-August 2010 Worked with GEOSS AIP creating

Term Details

ISO 19115

ISO 19115 "Geographic Information - Metadata"ISO 19115 Geographic Information - Metadata. International Organization for Standardization (ISO), Geneva, 2003 from ISO/TC 211, the current "best practice" standard for geospatial metadata, does not in fact provide a definition of geospatial (or geographic) metadata; however, uses the following wording in its "scope" section:

"This International Standard provides information about the identification, the extent, the quality, the spatial and temporal schema, spatial reference, and distribution of digital geographic data."

A little further, it is stated: "Though this International Standard is applicable to digital data, its principles can be extended to many other forms of geographic data such as maps, charts, and textual documents as well as non-geographic data." (Wikipedia)

ISO 19115/19119 Schema

ISO 19115 AQ Record Creation Procedure

To identify the fields necessary for discovery of the metadata record we started with the ISO 19115 Core Metadata fields (Nogueras-Iso, 2005) and also the fields that were needed for a Catalog Service for the Web (CSW) Record. This fulfilled two goals – one to create valid ISO 19115 records and the other to be able to retrieve the records from the clearinghouse through a CSW 2.0.2 query.

Create ISO Record - http://webapps.datafed.net/AQ_register.aspx ISO 19115 Validator: http://webapps.datafed.net/xv.aspx?schema=http://ngdc.noaa.gov/metadata/published/xsd/schema.xs

ISO 19115 Example

AQ Community Catalog: http://capita.wustl.edu/dataSpaceMetadata_ISO/

Projects/Programs Using ISO 19115

The CF convention for naming atmospheric chemicals and aerosols has been adopted by the following model intercomparisons (state of July 2008):

Software Applications that Use ISO 19115

@@ Line 1: / Line 1: @@
 {{WCS Glossary
-|Glossary Domain=WCS, HTAP
+|Glossary Domain=WCS, HTAP, AQInfrastructure
-|TermDesc=The metadata has the primary purpose to facilitate finding and accessing the data in order to help dealing with first two hurdles that the users face. Clearly, the air quality specific metadata such as sampling platform, data domain and measured parameters etc. need to be defined by air quality users. Dealing with the hurdles of data quality and multi-sensory data integration are topics of future efforts.
+|TermDesc=ISO 19115 is the metadata standard for Geographic information. The AQ Community chose ISO 19115 because it is a standard accepted by GEOSS and being implemented widely around the world. It includes the ISO 19115 Core, 19119 metadata for describing the geospatial services and AQ-specific metadata for finding datasets.
-|Links=http://en.wikipedia.org/wiki/ISO_19115
+|Links=[[GEOSS Clearinghouse]], [[AQ_uFIND]]
+|Contributors=Erin Robinson, CAPITA; Ted Habermann, NOAA; Wenli Yang, NASA; Chris Lynnes, NASA;
+|History=* Jan-May, 2009 First AQ Community Catalog Record Created
+* May-August 2010 Worked with GEOSS AIP creating
+}}
+=== ISO 19115 ===
+ISO 19115 "'''Geographic Information - Metadata'''"ISO 19115 Geographic Information - Metadata. International Organization for Standardization (ISO), Geneva, 2003 from ISO/TC 211, the current "best practice" standard for geospatial metadata, does not in fact provide a definition of geospatial (or geographic) metadata; however, uses the following wording in its "scope" section:
+"''This International Standard provides information about the identification, the extent, the quality, the spatial and temporal schema, spatial reference, and distribution of digital geographic data.''"
+A little further, it is stated: "''Though this International Standard is applicable to digital data, its principles can be extended to many other forms of geographic data such as maps, charts, and textual documents as well as non-geographic data.''" ([http://en.wikipedia.org/wiki/Geospatial_metadata Wikipedia])
+[http://ngdc.noaa.gov/metadata/published/xsd/schema.xsd ISO 19115/19119 Schema]
+=== ISO 19115 AQ Record Creation Procedure ===
+To identify the fields necessary for discovery of the metadata record we started with the ISO 19115 Core Metadata fields (Nogueras-Iso, 2005) and also the fields that were needed for a Catalog Service for the Web (CSW) Record. This fulfilled two goals – one to create valid ISO 19115 records and the other to be able to retrieve the records from the clearinghouse through a CSW 2.0.2 query.
 Create ISO Record - http://webapps.datafed.net/AQ_register.aspx
+ISO 19115 Validator: http://webapps.datafed.net/xv.aspx?schema=http://ngdc.noaa.gov/metadata/published/xsd/schema.xs
-ISO 19115 Validator: http://webapps.datafed.net/xv.aspx?schema=http://ngdc.noaa.gov/metadata/published/xsd/schema.xs
+=== ISO 19115 Example ===
+* AQ Community Catalog: http://capita.wustl.edu/dataSpaceMetadata_ISO/
+=== Projects/Programs Using ISO 19115 ===
+The CF convention for naming atmospheric chemicals and aerosols has been adopted by the following model intercomparisons (state of July 2008):
+* [http://www.htap.org/ Task Force on Hemispheric Transport of Air Pollution (TF HTAP)]
+* [http://wgiss-acig.wustl.edu/web/ac_portal/wiki/-/wiki/CEOS%20ACC%20Portal%20Activity/Metadata+Comparison+and+Harmonization?p_r_p_185834411_title=Metadata+Comparison+and+Harmonization Atmospheric Composition Portal]
+* [http://www.ngdc.noaa.gov/metadata/published/19115/IOOS/1list.html NOAA] | [https://www.ngdc.noaa.gov/wiki/index.php?title=ISO_Metadata_Standard ISO 19115/19119 Documentation, NOAA]
-ISO 19115/19119 Schema: http://ngdc.noaa.gov/metadata/published/xsd/schema.xsd
+=== Software Applications that Use ISO 19115 ===
+* [http://clearinghouse.cisc.gmu.edu/geonetwork/srv/en/main.home GEOSS Clearinghouse]
+* [http://webapps.datafed.net/aq_ufind.aspx AQ uFIND]
+* [http://wdc.dlr.de/geonetwork/srv/en/main.home ACP GeoNetwork Catalog]
-ISO 19115/19119 Documentation, NOAA: https://www.ngdc.noaa.gov/wiki/index.php?title=ISO_Metadata_Standard
-|Contributors=Erin Robinson, CAPITA; Ted Habermann, NOAA; Wenli Yang, NASA; Chris Lynnes, NASA;
-|History=* Jan-May, 2009 First AQ Community Catalog Record Created
-* May-August 2010 Worked with GEOSS AIP creating
-}}
-One of the goals of the AIP-II was to identify a GEOSS record that could be common for all Earth observations. The AQ group worked with the CCRM group to identify the key elements needed for discovery and create a standard metadata record that could be used by the community. For this the AQ WG used the ISO 19115 geographic information metadata standard to create the metadata records because it is the geospatial metadata standard recognized by GEOSS (2005) in the GEOSS Standard Registry (GEOSS, 2008) because it is open and internationally recognized. The ISO 19115 standard is also compatible with Catalog Service for the Web (CSW) standard interface with an ISO 19115 profile for dynamic querying (ISO 19115, 2005). The CSW and ISO 19115 Profile for CSW are also GEOSS recognized catalog service standards.  Another benefit of the ISO 19115 standard is that it allows for not only discovery metadata to be included, but also includes data lineage, usage and other types of metadata for understanding multiple applications. The initial focus of metadata creation was on discovery however future work will include the extension of metadata to usage, lineage, and other components of the metadata. The discovery metadata record is defined as the minimum information a user needs to find the data and bind to it.
-To identify the fields necessary for discovery of the metadata record we started with the ISO 19115 Core Metadata fields (Nogueras-Iso, 2005) and also the fields that were needed for a Catalog Service for the Web (CSW) Record. This fulfilled two goals – one to create valid ISO 19115 records and the other to be able to retrieve the records from the clearinghouse through a CSW 2.0.2 query. This list was compared to the current GEOSS Clearinghouses’ queryable and returnable fields. It was found that none of the clearinghouses or the GEOSS Service Registry allowed all of the CSW:record fields to be searched.  It was also found that the three clearinghouses queried over different fields in the metadata record, there wasn’t a standard nomenclature for field names and key fields for Earth observation data, like temporal extent of the datasets, were missing.
-Through the collaboration between the AQ WG and the CCRM WG, a key set of queryable fields for all Earth observations has emerged as a potential GEOSS Record: Dataset title, abstract, geolocation, temporal extent, keywords, service type, metadata file ID and associated component (catalog information). This set allows for text search as well as spatial and temporal searches. If a common vocabulary is used, additional keyword search allows discovery by measurement platform or observed phenomena. Information about the service type allows filtering by specific service standard and the associated component links the metadata record of a given dataset to a larger community catalog. These queryable fields can be in any metadata format, it is just important that the community agrees this set is needed to find any Earth observation service. With theGEOSS Record plus the ISO 19115 Core Metadata fields the AQ WG had a metadata record that could be used for discovery.
-[[Category:Mediator]]
+[[Category:Mediator]][[Category:ISO Metadata]]