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Hydrology DWG
Tentative Work Plan
71st OGC Technical Committee
Mountain View, CA. USA
Ilya Zaslavsky, David Lemon, Ulrich Looser
December 8, 2009
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Expected Outcomes
Very tentative – for discussion at this and subsequent meetings. On the wiki:
http://external.opengis.org/twiki_public/bin/view/HydrologyDWG/HydroDWGWorkPlan
The focus of the group is analyzing and understanding requirements and use cases for
hydrologic data integration, development of domain models and standards (where
standardization is justified) for data exchange in the areas of hydrology and water
resources, and establishment of a community consensus-building process to support
adoption and proliferation of the standards. We expect that outcomes of DWG work will
match WMO needs and is considered for adoption by WMO, as well as by developers of
hydrologic data management software.
• The main expected outcome is a common model for exchanging
hydrologic data, which includes:
– An agreed feature model (ie. what are the features of the hydrosphere (from an
information perspective) and how are they related.)
– An agreed observation model.
– Agreed vocabularies, endorsed by the community, and by WMO in particular.
Agreeing on semantics is a long process, but we should be able to recommend some
vocabularies
– Also: services carrying the above
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HDWG Activities
• Analysis and harmonization of existing commonly used protocols and
standards in the domain
• Interoperability Experiments (IEs) focused on selected sub-domains of
water data (e.g. surface water, groundwater, water quality, water use,
hydrologic forecasts, real time data), where teams of DWG members
will pilot emerging water data standards and services, specifically
addressing the three components above.
• Participation in GEO Architecture Implementation Pilots (AIPs), focused
on broader scenarios within the entire domain and across domains
• Submission of discussion papers and best practice papers (the latter
following IE and AIP experiences)
• Collaboration with other DWGs, in particular ESS (on modeling),
MetOcean (on handling gridded data), SWE (on real time data
management) – how?
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Sub-groups and IEs: focus, size, management
• Sub-groups:
– Design group: primarily responsible for driving WaterML 2.0
– Use case and testbed groups: IEs
– Ontology/vocabulary task force
• IEs: so far, we’ve talked about 3 IEs: groundwater, surface
water, water quality (but also: water use? Forecasts?...)
– We expect that each IE will be about a year long. We hope that IE teams
will work in collaboration, to ensure that a common model is developed, or
that there are justified reasons to diverge. For this, it may be useful to have
a workshop of IEs (once we have them going, ie. 2nd half of 2010). Another
cross-IE communication is having overlapping members and/or observers.
– Another organizational option is to have a single large IE, covering all the
sub-domains
– Each IE is expected to address feature model in its sub-domain (sampling
features, features of interest, cluster/aggregate features), the observation
model (frequencies, sampling patterns, etc.), vocabularies, and services.
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Timeline
• Let’s envision what we can do in two years
• September 2009: Discussion paper on harmonization of water data exchange
formats (1st version) ; IE1 announced
• December 2009: Update on the harmonization report; Proposed WaterML 2.0
schema announced; IE1 officially launched, IEs 2-3 announced and IE teams
formed; Work plan discussed and adopted
• March 2010: WaterML 2.0 submitted as a discussion paper ; IE2 launched (to
be reported 3/11); AIP team formed; Ontology task force started (with GRDC,
CSIRO, CUAHSI, others)
• June 2010: IE1 preliminary report;IE3 launched
• September 2010: HDWG workshop focused on IEs (who will host?); IE2
preliminary report
• December 2010: IE1 final report, a best practice paper based on the results
• March 2011: IE2 final report, and a paper
• June 2012: IE3 final report, and a paper
• September 2012: Results of AIP; technical report
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Milestones
• March 2010
– CSIRO – coordinator for Surface Water
• June 2010
• September 2010
• December 2010
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