Deutscher Wetterdienst

GISC DWDMarkus Heene, DWD

markus.heene@dwd.de

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GISC DWD - Timeline 05/2010 First preoperational GISC in WIS

09/2010 Endorsement ET-GDDP

11/2010 CBS Recommendation

05/2011 Designation from WMO CG XVI

09/2011 Operations

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GISC DWD - Services Discover Access and Retrieval

Flexible Subscription Services– Time triggered

– Event triggered

Metadata Editor

Hosting WIS Centre

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Contributions to WIS DWD participates several ETs, ICG, …

Released Metadata catalogue performance study to community Geonetwork improvements

Shared results of DAR Metadata analysis with WIS community

Active member of jOAI community

DAR Metadata Generator

Released SRU2JDBC in co-operation with WMO as Open Source http://sru2jdbc.svn.sourceforge.net/

AFD (Automatic File Distributor) flexible Open Source distribution software http://www.dwd.de/AFD/

Contribute expert for WIS Jump Start Offer

Support WMO WIS Branch with staff

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GISC DWD Connected DCPC

– ECMWF

– EUMETSAT

– Arctic Data Centre (met.no)

– DKRZ

– AWI

– DLR

– ESA (Italy)

– …

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Workflow – Connect DCPC – Metadata Exchange

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Workflow- Details Step 1

– Kick-off: Workshop, Telephone Conference, Conversation

• Exchange Details: Scope of DCPC, WIS, Roles and Responsibility, …

• GISC provides WIS documentation

• DCPC provides ISO 19139 conform DAR Metadata

Step 2– Check DAR Metadata

• GISC validates Metadata record (ISO 19139)

• GISC imports Metadata record

• Granularity: 100 or 1.000.000 Metadata records ?

• Necessary Elements: fileIdentifier and dateStamp (required for update but not ISO 19139 mandatory)

• Check Online Resource

• Check WMO recommendations

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Workflow- Details Step 3:

– GISC explains implemented procedures for Metadata exchange

• OAI – standard for GISC to GISC Metadata exchange

- DCPC provides OAI Server Address and OAI Set Name

- GISC configures harvesting procedure

• FTP – optional exchange procedure for DCPC or NC

- Agree on push or pull – exchange server and account details

- Agree on delete procedure

Step 4:– Test exchange procedure – functional tests

• Use Cases: Create, Update, Delete Metadata Record

• OAI

- Incremental Harvesting – time attribute

- Delete Operation – is optional according to OAI Spec

• FTP

- Test agreed delete Procedure

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Workflow- Details Step 5

– Operation test-phase

• Integration of DCPC into OAI test bed

• Bulk tests

• Check robustness and reliability

Step 6– Operation phase if all tests passed and communication established

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Q&A