OGC/WMO
Hydrology Domain Working Group:
mission, activities, plans
Ilya Zaslavsky
Spatial Information Systems Lab
San Diego Supercomputer Center
UCSD
ESIP Summer Meeting – ESIP Water Data Group, July 21, 2010
What is the OGC?
• The Open Geospatial Consortium, Inc. (OGC) is a nonprofit, international voluntary consensus standards
organization that is leading the development of standards
for geospatial and location based services.
– The OGC facilitates a consensus process in which government,
private industry, NGOs, and academia collaborate to create open
and extensible software application programming interfaces for
geospatial and other mainstream information technologies
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Benefits of open standards
• Prevents a single group from controlling a standard
• Facilitates competition
• Stimulates innovation
• Customers benefit from not being locked into a particular
supplier.
Source: Open Standards, Open Source, and Open Innovation: Harnessing the Benefits of
Openness, April 2006. Committee For Economic Development. www.ced.org
Integral part of CI;
Requirement for CI sustainability and extensibility, esp. with 3rd party components
AND - CI efforts are also a way to inform standards development
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WMO
‘... the UN system's authoritative voice on the state and
behaviour of the Earth's atmosphere, its interaction with the
oceans, the climate it produces and the resulting
distribution of water resources’
‘... facilitates the free and unrestricted exchange
of data and information, products and services in real- or
near-real time ...’
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Hydrology Domain Working Group
• A joint working group of the OGC and WMO constituted as
an OGC Domain Working Group.
• Brings together interested parties to develop and promote
the technology for greatly improving the way in which water
information is described and shared.
• Co-chaired by representatives nominated by the OGC TC
and the World Meteorological Organisation’s (WMO)
Commission for Hydrology (CHy).
• Current Co-Chairs: David Lemon (CSIRO), Ulrich Looser (GRDC)
and Ilya Zaslavsky (SDSC)
• > 50 Participants, > 30 Organisations
• Public mailing list https://lists.opengeospatial.org/mailman/listinfo/hydro.dwg
• Twiki http://external.opengis.org/twiki_public/bin/view/HydrologyDWG
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Expected Outcomes
• 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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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)
• 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)
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© 2009 Open Geospatial
7
Consortium, Inc.
Iterative Development
Feedback to
standards and
services
Hydro-DWG
workplan priority
Development
Focus
Improve
Observation Model
Conclude IE
Demonstration
Feature Model
Develop
IE
Vocabularies
Demonstrate
Services stack
Plan
Do
Thanks to Peter Fitch
for this slide
Complete
IE
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HDWG Agenda, Silver Spring Meeting, June 14-18
• 1. Introduction, results of Ispra (co-chairs), IEs and WaterML
– 8-8:20: David Lemon, HydroDWG planning and next steps
– 8:20-9:40: WaterML 2 and Harmonization Report updates (Pete Taylor and the
WaterML 2 design group)
– 9:40-9:50 Groundwater IE update (Nate Booth); Surface Water IE announcement and
kick-off invitation (Peter Fitch)
• 2. Presentations
– 10-10:25: Mark Nardi (USGS) - Water use data management at USGS: information
model, implementations, prospects of water use science.
– 10:24-10:45: Roland Viger and Nate Booth (USGS) - Using existing and emerging
OGC standards to support hydrologic models.
– 10:45-11:05: Ben Domenico (UNIDATA) - Managing point time series in netCDF/DAP
– 11:05-11:30: John Halquist (NOAA), Peter Gijsbers (Deltares) - Operational
hydrologic forecasts and infrastructure operation: use cases and requirements;
-- Pedro Restrepo (NOAA) - Interagency Water Resources Science and Services
Initiative
– 11:30-11:45: Michael Piasecki (Drexel University), Ilya Zaslavsky (SDSC) - CUAHSI
Hydrologic parameter ontology
• 3. Discussion and motions
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Timeline
• 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, IE 2 announced
• June 2010: WaterML 2.0 in Beta; IE2 launched; Harmonization report released
• December 2010: IE1 final report, leading to a best practice paper based on the
results; possibly IE3 launched (water quality? forecasting?)
• March 2011: WaterML 2.0 released (after RFC package -> SWG -> public
comments  voting); Ontology task force started (with GRDC, CSIRO,
CUAHSI, others) ;
– April 2011: a HDWG all-hands workshop (3-4 days)
• June 2011: IE2 final report, and a paper
• December 2011: WaterML best practices, service stacks and adoption
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© 2009 Open Geospatial
10
Consortium, Inc.
Interoperability Experiments
• Groundwater
– GSC\USGS
– Dec 09 – Dec 10
• Surface Water
– CSIRO
– Jun 10 – Jun 11
• Forecasting
– NWS\Deltares?
– Dec 10 – Dec 11
• Water Quality
• Water Use
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CUAHSI Water Data Services, April 2010
47 public services
13,200+ variables
1.8 million sites
22.9 million series
4.7 billion data values
(96% of them searchable)
Map Integrating
NWIS, STORET,
& Climatic Sites
The largest water data
catalog in the world
12
Federal Agency Water Data Services at
HISCentral (04/2010)
Network Name
Site Count
Value Count
Earliest Observation
NWISDV
32147
303843342
1/1/1900
WaterML-compliant GetValues service
from NWIS, catalog ingested
EPA
362645
78076394
1/1/1900
SOAP wrapper over WQX services, catalog
harvested
NWISUV
11987
83033376
60 DAYS
WaterML-compliant GetValues Service,
catalog ingested
NCDC ISH
11555
3000000*
1/1/2005
WaterML-compliant GetValues service
from NCDC, catalog harvested
NCDC ISD
24770
18165478
1/1/1892
WaterML-compliant GetValues service
from NCDC, catalog harvested
NWISIID
369148
15501245
1/9/1867
SOAP wrapper over NWIS web site,
catalog harvested
NWISGW
827200
8491383
1/1/1900
SOAP wrapper over NWIS web site,
catalog harvested
2206
263101295
1/1/2000
WaterML compliant REST services from
Army Corps of Engineers
RIVERGAGES
Notes
Hydrologic Ontology
http://hiscentral.cuahsi.org/startree.aspx
For More Information:
OGC/WMO Hydrology Domain Working Group:
Public mailing list
https://lists.opengeospatial.org/mailman/listinfo/hydro.dwg
Twiki
http://external.opengis.org/twiki_public/bin/view/HydrologyDWG
The CUAHSI HIS project:
Project web site
http://his.cuahsi.org
Thank you ...
[email protected]
SDSC Spatial Information Systems Lab
http://spatial.sdsc.edu/
Research and system development
•
•
•
•
•
Geosciences CI (GEON, CUAHSI, CBEO, OOI…)
Services-based spatial information
integration infrastructure, CI projects
Mediation services for spatial data, query
processing, map assembly services
Long-term spatial data preservation
Spatial data standards and technologies for
online GIS (OGC standards, standards
development)
Support of spatial data projects at SDSC
and beyond
services
In Neurosciences (BIRN, CCDB, INCF)
In regional development (NIEHS SRP, CRN…)
Contact: [email protected]