Enhancing Data Discovery, Understanding and Usage through an Air Quality Metadata System ISRSE, 6...
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![Page 1: Enhancing Data Discovery, Understanding and Usage through an Air Quality Metadata System ISRSE, 6 May 2009 The Palazzo dei Congressi di Stresa Stresa,](https://reader036.fdocuments.us/reader036/viewer/2022062515/56649d255503460f949fc71d/html5/thumbnails/1.jpg)
Enhancing Data Discovery, Understanding and Usage through an Air Quality Metadata System
ISRSE, 6 May 2009
The Palazzo dei Congressi di Stresa
Stresa, Italy
Erin Robinson, R.B. Husar, S.R. Falke, E.T. Habermann, S. Nativi, A. Warnock, M. Hogeweg, J. Lieberman
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Goals of AIP II for Air Quality
• Test and evaluate the GCI for AQ applications.
• Registering and retrieving AQ data through the Clearinghouse
• Connect AQ Applications to GCI
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Emission
Surf. Obs.Satellite
Model
Population
Informing the Public
Enforcing Standards
Hemispheric Transport
Real-time Service
Regulatory Analysis
Policy Assessment
Air Quality & Health Applications
Observing Systems
Atmospheric Composition
Science & Education
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Hurdles
“The user cannot find the data;
If he can find it, cannot access it;
If he can access it, ;
he doesn't know how good they are;
if he finds them good, he can not merge them with other data”
The Users View of IT, NAS 1989
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SOA ActionsActions: Register– Discover -Access
UserProvider
Broker
The data reuse is possible through the service oriented architecture of GEOSS.
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SOA Actions
Actions: Register– Discover -Access
UserProvider
Broker
The data reuse is possible through the service oriented architecture of GEOSS.
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SOA Actions
Register Metadata
Actions: Register– Discover -Access
UserProvider
Broker
GEOSSClearinghouse
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SOA Actions
Access Data
Actions: Register– Discover -Access
Discover Get Access
UserProvider
Broker
GEOSSClearinghouse
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SOA Actions
Access Data
Actions: Register– Discover -Access
Discover Get Access
UserProvider
Broker
GEOSSClearinghouse
The result is a dynamic binding mechanism to create loosely-coupled work-flow applications.
Register Metadata
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Preparation of Data and Metadata
MetadataData
Data Protocol
WMS, WCS (netDCF CF) + conventions
UserProvider
GEOSSClearinghouse
Access
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Preparation of Data and Metadata
Register Metadata
MetadataData
Data Protocol
WMS, WCS (netDCF CF) + conventions
Metadata
ISO 19115 subset for Geospatial Data
UserProvider
GEOSSClearinghouse
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Air Quality Metadata Record
Discover, Get Access Key
UserProvider
GEOSSClearinghouse
OGC CSW Queryable
Air QualitySpecific
ISO 19115CSW Profile
OGC CSW Returnable
MetadataDescription
Data Binding
Metadata for Finding and Accessing Data
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Register Data Service
Registration via GetCapabilities to ISO 19115 translation
AQ Community CatalogWeb Accessible Folder
ISO record for each Dataset
Data Protocol
WMS, WCS (netCDF CF) + conventions
Metadata
ISO 19115 subset for Geospatial Data
Register Metadata
MetadataData
UserProvider
GEOSSClearinghouse
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Catalog Registration in GEOSS Registry
AQ Community CatalogWeb Accessible Folder
ISO record for each DatasetRegister
Metadata
MetadataData
UserProvider
GEOSSClearinghouse
GEOSSRegistry
Register in CSR
QueryCatalogs
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Register Data Service
Registration via GetCapabilities to ISO 19115 translation
AQ Community CatalogWeb Accessible Folder
ISO record for each Dataset
Data Protocol
WMS, WCS (netCDF CF) + conventions
Metadata
ISO 19115 subset for Geospatial Data
Periodic harvest
Register Metadata
MetadataData
UserProvider
GEOSSClearinghouse
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Search for AQ Data
AQ-Specific Filter
Community Portal
Provider
GEOSSClearinghouse
Coarse Filter
OGC CSW Queryable
OGC CSW Returnable
Data Binding
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Refined Search for AQ Data
AQ-Specific Filter
Community Portal
Provider
GEOSSClearinghouse
Coarse Filter
Refined Search
OGC CSW Queryable
Air QualitySpecific
ISO 19115CSW Profile
OGC CSW Returnable
MetadataDescription
Data Binding
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Next Steps:
• Continue to work with AQ community to improve the AQ-specific sections needed for sharper discovery
• Work with AQ data providers to register their services in the AQ Community Catalog
• Extend metadata unstructured user-contributed content through DataSpaces
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Airnow DataSpace
Dataset Description
Dataset Discussion
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Summary
Discover: CSW/RSS/ISO
Access: WMS/WCS
Register: ISO Metadata
UserProvider
GEOSSClearinghouse
• Existing data and metadata standards now allow the application of SOA to air quality
• Over 30 air quality datasets are registered and accessible through the GCI
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Acknowledgements
George Percivall, OGC
GEO Clearinghouses and GEO Portals:• ESRI• USGS• Compusult
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Links
• ESIP AQ Cluster• AQ Community Portal | ISO 19115 AQ Metadata Editor• AQ Community Catalog | AQ Client Browser