Diapositiva 1

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Interoperability plans and tests between GEODAB
and the GEONETCastS. Nativi1, F. Papeschi1, M.
Craglia2, Y. Gevorgyan3, K. Renner4
1 CNR-IIA 2 EC-JRC
3 NOAA 4 EUMETSAT
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Community Portals
GCI
Semantic assets
OneGeology
INPE
EEA-SDI
SAEOS
IODE
EnviroGRIDS/WaterML
GENESI-DEC
CLEARINGHOUSE
CWIC
NASA GCMD
PANGAEA
EuroGEOSS
NASA GSFC-DAAC
SeaDataNet
WIS
GBIF
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Total Records GEOSS Data Core Comments
EuroGEOSS 3201 9
EEA SDI GEOSSDataCore Catalog 345 345 These records will be displayed as GEOSS DataCore in late March (Broker will be updated to support the tagging of an entire catalog)
PANGAEA 420430 420430 These records will be displayed as GEOSS DataCore in late March (Broker will be updated to support the tagging of an entire catalog)
NASA GCMD 22055 8340
GEOSS Clearinghouse 126381 512
INPE 800000 800000 A new capacity was recently provided by INPE using a new protocol, this will be available in late march with the new deployment of the Broker. The number of records is estimated.
Web-Service energy Catalog 230 11
EEA SDI catalogue 679 0
SeaDataNet 501 0
WIS GISC DWD 128203 0
KNOSSOS 536 0
NOAA Unified Access Framework Catalog 1448 0
IODE 4 0
OneGeology 379 0
SAEON 108 0
GENESI 6000000 0 The number of records is estimated (due the GENESI DEC protocol)
Compusult Catalog 7000000 0 Service seems to be down at the moment
Grand TOTAL 14504500 1229647

• About 20 brokerable capacities/systems/Communitie
  s
• More than 14 Million resources
• More than 1.2 million are GEOSS Data Core
• About 400,000 requests per year

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WEB-based
GEO Web Portal
Semantic assets
Community Portals
GCI
. ..
. ..
Millions of resources
EO Systems, Capacities, and Infrastructures e.g.
Geo CHC, CWIC, GENESI-DEC, GBIF, GCMD,
SeaDataNet, OneGeology, ..
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Many regions targeted by GEOSS still have limited
access to Internet
The GCI is a Web framework
How to access the GCI in regions having limited
Internet connection ?
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GEONETCast
.. a near real time, global network of
satellite-based data dissemination systems
providing environmental data to a world-wide user
community
http//www.eumetsat.int/Home/Main/DataAccess/EUMET
Cast/SP_20100519114624675?len
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GEONETCast Infrastructure

• Satellite-based regional dissemination system
  based upon Digital Video Broadcast (DVB)
  technology
• GEONETCast Broadcast Streams
• EUMETCast
• Europe, Africa and the Americas
• Established in 2004
• More than 2,000 registered reception stations
• More than 1,600 users
• CMACast (China Meteorological Administrations
  contribution)
• Utilises the AsiaSat 4 satellite beam to
  broadcast data and products to a user community
  in the Asia Pacific region.
• GEONETCast-Americas
• Broadcast covering the Americas, managed by NOAA

GEONETCast is a milestone in GEOSS
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GEONETCast interconnection to GEO-DAB/GCI

• Entry point

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Harvesting OAI-PMH
Local storing XDB
Broadcasting DVB
Local discovery GI-NETCast
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General Approach
OAI-PMH

• EUMETSAT Data Server uses the GEO-DAB harvesting
  interface to download all the available GCI
  (metadata) records
• GEONETCast satellites broadcasts the harvested
  GCI to GEONETCast users
• Users Data Server updates the local DB with the
  received (broadcasted) content
• Users discovers and evaluates the local DB
  content using an adapted (offline desktop)
  version of the EuroGEOSS GEO-DAB client

DVB
XDB
GI-NETCast
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Harvesting and broadcasting requirements
GCI records are not static, GEONETCast user DBs
MUST be updated (near real time)
Satellite traffic MUST be reduced as much as
possible, GCI provides millions of entries
Satellite throughput is limited, large files MUST
be avoided
selective harvesting to harvest only the
portion of records most recently updated GEO-DAB
already supports this technology (i.e. OAIPMH
2.0 standard) Harvested records are stored in a
structured file system that can be transmitted
via satellite (no large files)
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GI-NETCast requirements
Good performances on low cost PCs
A specific indexing mechanism guarantees good
query performance saving hardware resources
Portability on different operating systems and
hardware
Use of Java Virtual Machine as a cross-platform
computing environment
Provide (at least) the basic discovery
features (i.e. search by keywords, area and
temporal period) via a user friendly GUI
Build on the GEODAB core technology, providing
accurated discovery features accessible through a
usable, user friendly GUI
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GI-NETCast query
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GI-NETCast query results
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GI-NETCast browsing
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Future work

• Interoperability test is the basis for one of the
  Showcases that will be proposed for the
  Ministerial
• providing the basis for access and use of GEO
  data and serves in countries with limited
  internet access
• Interoperability test with the 52N GEONETCast
  Toolbox Software.

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Thank you ! Questions?
nativi_at_iia.cnr.it
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GEO Web Portal
Semantic assets
GCI
. ..
. ..
EO Systems, Capacities, and Infrastructures e.g.
CWIC, GENESI-DEC, GBIF, GCMD, SeaDataNet,
OneGeology, ..
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GEONETCast

• GEONETCast is a milestone in GEOSS
• Products and services are being made available to
  the GEONETCast user community
• Meteosat image data
• GOES East and West image data
• FY-2 image data
• Land and Ocean Sea Ice Satellite Application
  Facility (SAF) products
• EUMETSAT meteorological products

• NOAA-NESDIS meteorological products
• NOAA-NESDIS Ocean colour and sea surface
  temperature products
• VEGETATION products from VITO
• MODIS Ocean colour products
• In-situ and observational data