WCS 2.0 Extension for netcdf-cf; CSW and THREDDS Interoperability

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1 GEOSS Workshop XLIII: Sharing Climate Information & Knowledge NCAR Center Green, Boulder Colorado, 23 Sept 2011, 8:00am 5:30pm WCS 2.0 Extension for netcdf-cf; CSW and THREDDS Interoperability S.Nativi (CNR IIA ESSI-lab)

2 Rationale } Improve interoperability to share Climate information } Extend well-adopted Geospatial standards to support climate datasets } Broker well-adopted Climate data tools and make them interoperable Extend standards Broker tools

support climate datasets } Broker well-adopted Climate

3 CF-netCDF extension for WCS 2.0 } Mapped CF-netCDF to ISO data model } Extended OGC standards to support CF-netCDF } WCS 2.0 } WFS } SOS } Extend standards Broker tools

4 Approach netcdf data model [OGC ] CF conventions for netcdf [NASA standard ] [OGC 11-??]

5 OGC CF-netCDF specification } Extend netcdf data model adopting the Climate and Forecast (CF) conventions } netcdf (network Common Data Form) ver. 3.0 file format } CF (Climate and Forecast) conventions ver. 1.6 } multi-dimensional Discrete Sampling Geometries (i.e. CF Sampling Geometries types)

ver. 3.0 file format } CF (Climate and Forecast) conventions ver. 1.

6 CF-netCDF Data Model extension CF Variable and Standard Attributes

7 Sampling Geometries (Feature Collections) Context

8 Mapping Rules CF-netCDF entity ISO Coverage entity CF-netCDF data model specification [OGC 11-??]

9 A unique Data Model for three Views field or coverage feature or boundary data observation or specimen

10 Approach [ISO 19123] [OGC 11-???] [OGC ] CF-netCDF data model NetCDF Binary Encoding Extension NetCDF Classic and 64- bit Offset Format WCS 2.0 [OGC r3] [OGC ] [OGC r1] GML Application Schema for Coverages

11 Content } CF-netCDF data model mapping onto the WCS 2.0 data model } WCS 2.0 service model extensions for CF-netCDF encoding } Possible binary and XML-based encoding formats returned by a getcoverage request

12 Mapping Rules CF-netCDF entity ISO Coverage entity GML Coverage entity GML entity CF-netCDF data model specification [OGC 11-??] WCS 2.0 CF-netCDF extension

13 Dataset Mapping

14 Feature Collection Mapping

15 GetCoverage response } CF-netCDF data encoding structure returned by a successful request shall implement a Discrete Coverage File realized according to this specific model

16 Broker Climate data tools } Extended the CSW by adding distribution and mediation } Broker THREDDS/OPeNDAP and make it accessible through OGC CSW (OpenSearch-GEO and OAI- PMH) Extend standards Broker tools

17 TDS: an Inventory and Access services } TDS published services: } TDS inventory service } WCS, WMS, } TDS accessed resources: } NetCDF files and folders } GRIB2, HDF, } OPeNDAP resources TDS Inventory/nc/ISO (NOAA) OGC WCS OGC WMS

accessed resources: } NetCDF files and folders } GRIB2,

18 From Inventory/Access to Catalog service } GI-cat published services } CSW } OpenSearch } OAI-PMH } } GI-cat accessed resources: } THREDDS inventory service } WCS, WMS (WFS, WPS, SOS) } NetCDF, ncml } CSW OpenSearch OAI-PMH TDS Inventory/ncISO WCS WMS

resources: } THREDDS inventory service } WCS, WMS (WFS, WPS,

19 OGC CS-W General Functional Model CatalogService 1 Discovery +describerecordtype() +gerdomain() +present() +query() Mandatory Manager Session BrokeredAccess +harvestrecords() +transaction() +cancel() +close() +initialize() +status() +order() } CS-W functionalities } Mandatory capabilities } offline order } Discovery Metadata Query & Present (e.g. getrecords, getrecordsbyid, describerecord) Optional capabilities } Session (e.g. initialize, close, status) } Management (e.g. harvest, transaction)

+order() } CS-W functionalities } Mandatory capabilities } offline order } Discovery Metadata Query & Present (e.g.

20 Extended Functional Model introducing Distribution & Mediation } Extended model for a Mediation Catalog service (Catalog Broker) } Extended functionalities Mediation GI-Cat Catalog Service 1 Discovery getcontent getmetadata query Mandatory Session Messaging Persistency Distribution Mediation & Access commit init login logout rollback publish subscribe unsubscribe purge store add remove getmapping setmapping Stateful behavior Transaction Asynchronous interaction Caching Federation of new service instances Mapping heterogeneous service modesl to the federation one

21 Profilers Common Data Model Distributor Harversters Accessors OWS Accessors OpenSearch Asynchronous messaging CS- W AP Accessors CS- W(T)/ ISO AP CS-W/ ebrim-cim AP CS-W/ ebrim-eo AP ISO 19115, , Extensions (eb- RIM/CIM /EO, GBIF, SWE). GBIF Accessor OpenSearch Accessor THREDDS/ OPeNDAP Accessor CDI Accessor ESRI CSW OAI- PMH Accessor GeoRSS Accessor OAI-PMH empowered by Extended Interface RIM- EO, RIM- CIM, ISO Local Repositories netcdf Accessor

22 Thank you for your attention! Stefano Nativi:

23 CF-netCDF Dataset Mapping to ISO19123:CV_DiscreteCoverage

24 CF-netCDF SamplingGeometries Mapping to ISO19123:CV_DiscreteCoverage

25 Serve CF-netCDF datasets } Mapping CF-netCDF data model to the ISO Coverage model } The CF extension to the netcdf core model } Extend WCS 2.0 Standard Interface to serve CF-NetCDF datasets } The CF-netCDF encoding format extension to OGC WCS 2.0 Data Model Service Interface protocol Operations Encoding schema Payload Data Model

CDI/THREDDS Interoperability: the SeaDataNet developments. P. Mazzetti 1,2, S. Nativi 1,2, 1. CNR-IMAA; 2. PIN-UNIFI

CDI/THREDDS Interoperability: the SeaDataNet developments P. Mazzetti 1,2, S. Nativi 1,2, 1. CNR-IMAA; 2. PIN-UNIFI Outline Interoperability Issues in SeaDataNet A broker solution for CDI/THREDDS interoperability