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 non-profit, 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 The OGC is a not for profit consortium dedicated to the development of specifications that enable geospatial technologies to “plug and play” across any device, platform or network. The OGC consists of 380+ members - geospatial technology software vendors, systems integrators, government agencies and universities - participating in a consensus process to develop, test, and document publicly available interface specifications and encodings for the geospatial industry. Open interfaces and protocols defined by OpenGIS® Specifications are designed to support interoperable solutions that "geo-enable" the Web, wireless and location-based services, and mainstream IT, and to empower technology developers to make complex spatial information and services accessible and useful to all kinds of applications.

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 Prevents a single, self-interested party from controlling a standard Facilitates competition by lowering the cost of entry Stimulates innovation beyond the standard by companies that seek to differentiate themselves. Customers value the interoperability that open standards provide and generally benefit from not being locked into a particular supplier. 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

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 ...’

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

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

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) © 2009 Open Geospatial Consortium, Inc.

Iterative Development Hydro-DWG workplan priority Feedback to standards and services Development Focus Plan Do Demonstrate Improve Observation Model Conclude IE Demonstration Feature Model Develop IE Vocabularies Services stack Complete IE Thanks to Peter Fitch for this slide

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

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 © 2009 Open Geospatial 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

CUAHSI Water Data Services, April 2010 Map Integrating NWIS, STORET, & Climatic Sites 47 public services 13,200+ variables 1.8 million sites 22.9 million series 4.7 billion data values (96% of them searchable) The largest water data catalog in the world

Federal Agency Water Data Services at HISCentral (04/2010) Network Name Site Count Value Count Earliest Observation Notes NWISDV 32147 303843342 1/1/1900 WaterML-compliant GetValues service from NWIS, catalog ingested EPA 362645 78076394 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 NWISIID 369148 15501245 1/9/1867 SOAP wrapper over NWIS web site, catalog harvested NWISGW 827200 8491383 RIVERGAGES 2206 263101295 1/1/2000 WaterML compliant REST services from Army Corps of Engineers

Hydrologic Ontology http://hiscentral.cuahsi.org/startree.aspx 4/17/2018 Hydrologic Ontology http://hiscentral.cuahsi.org/startree.aspx

For More Information: Project web site http://his.cuahsi.org 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 ... zaslavsk@sdsc.edu

SDSC Spatial Information Systems Lab http://spatial.sdsc.edu/ Research and system development 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 Geosciences CI (GEON, CUAHSI, CBEO, OOI…) services In Neurosciences (BIRN, CCDB, INCF) In regional development (NIEHS SRP, CRN…) Contact: zaslavsk@sdsc.edu