Transcript VrRBO with THREDDS data store

VrRBO with THREDDS data
store
Paths & URLs
• THREDDS server
http://spidrd.ngdc.noaa.gov/thredds
• THREDDS data directory
spidrd:/mnt/sdb2/devel/content/thredds/vir
bo
• ViRBO http://spidrd.ngdc.noaa.gov/virbo
NetCDF granules
• Store catalog level metadata in VO
• Store granule level metadata in a section
of the VO database
• Search the granules metadata using
product-specific web form (link from a
catalog metadata record)
• Upload NetCDF files into the Data Store
• Access data granules using OpenDAP
ViRBO file upload
ViRBO Portal
OpenDAP
URL
VO web application
ViRBO Data Store
THREDDS
OpenDAP server
THREDDS
data driectory
XML database
with metadata
“CLASS” API
Web service
External granulelevel metadata
database
NetCDF file
DataStore
VO API
Time series as THREDDS joins
of NetCDF files
• Store catalog level metadata in VO
• Create a folder in the Data Store to store
multiple NetCDF files
• Create a folder.ncml file in the Data Store to join
multiple NetCDF files into one time series
“database”
• Subselect (hyper-slab) time series from the
joined “database” using OpenDAP protocol and
clients (link from catalog metadata record)
Enhanced THREDDS Catalog
• Adds XML (NCML) metadata file to the
binary granule
• NCML metadata can be used in WCS or
rendered into HTML for a web client
• NCML granule data CAN NOT be
searched using xQuery or xPath
Open questions
• What granule-level metadata schema?
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NCML? Can’t get it directly from THREDDS…
CDFML? Can’t get only header using CDF2XML…
ECHO? No software extractors…
SPASE? No CDFML2SPASE, no use cases/samples
• How manipulate folders in the THREDDS Data
Store?
• What OpenDAP viewer to use as default?