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CUAHSI Hydrologic Information System and the Virtual Observatory
David R. MaidmentCenter for Research in Water Resources
University of Texas at Austin
NSF-NERC WorkshopWashington DCMarch 1, 2010
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CUAHSI Hydrologic Information System and the Virtual Observatory
• The cloud and web services• CUAHSI water data services• Building water data networks• Ways of using water data services
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CUAHSI Hydrologic Information System and the Virtual Observatory
• The cloud and web services• CUAHSI water data services• Building water data networks• Ways of using water data services
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HIS Team and Collaborators• University of Texas at Austin – David Maidment, Tim
Whiteaker, James Seppi, Fernando Salas• San Diego Supercomputer Center – Ilya Zaslavsky, David
Valentine, Tom Whitenack, Matt Rodriguez• Utah State University – David Tarboton, Jeff Horsburgh, Kim
Schreuders, Justin Berger• University of South Carolina – Jon Goodall, Anthony
Castronova• Idaho State University – Dan Ames, Ted Dunsford, Jiri Kadlec
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A Virtual Observatory for Catchments
Modeling
Weather and Climate
Monitoring
Remote Sensing
Catchment
Accessing and synthesizing data and models ……
…… doing this in “the cloud”
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What is “the cloud”?Networks of computers connected through the web …….
• Everything is a service– Data, models, visualization, ……
• A service receives requests and provides responses using web standards (WSDL)
• It uses customized web languages– HTML (HyperText Markup Language) for text and
pictures– WaterML for water time series (CUAHSI)– GML for geospatial coverages (OGC)
….. supporting a wide range of users
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Text, Picturesin HTML
How does the internet work?
7
…..this is how it works now
This is how it got started …..
Web servers Mosaic browserText, Picturesin HTML
Web servers Firefox, Internet Explorer
Google, Yahoo, Bing
Metadata harvesti
ng Search Services
Three key components linked by services and a
common language
Catalog
UserServer
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What has CUAHSI Done?Taken the internet services model …..
Server User
Catalog
…..and implemented it for water observations data
Time series datain WaterMLHydroServer, Agency Servers HydroExcel, HydroDesktop, ...
HIS Central
Metadata harvesting Search Services
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CUAHSI Hydrologic Information System and the Virtual Observatory
• The cloud and web services• CUAHSI water data services• Building water data networks• Ways of using water data services
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RainfallWater quantity
Groundwater
Water Observations Data
Meteorology
Soil water
Water quality
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Water Data Web Sites
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Point Water Observations Time Series
A point location in space A series of values in time
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WaterML as a Web LanguageDischarge of the San Marcos River at Luling, TX June 28 - July 18, 2002
Streamflow data in WaterML language
The US Geological Survey and other water agencies in the US have adopted WaterML
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International Standardization of WaterML
14
OGC/WMO Hydrology Domain Working Group
Design of WaterML 2.0 and testing in Interoperability Experiments
Meets 4 times per year (2 in Europe, 2 in US)
OpenMI conceptual
model should be included
+ Hydrology Workshopat JRC, Ispra
(formed in December 2008)
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NCDC Integrated Station Hourly Data
Hourly weather data up to 36 hours ago
13,628 sites across globe
34 variables
Published by National Climate Data Center and populated with weather observations from national weather services
http://water.sdsc.edu/wateroneflow/NCDC/ISH_1_0.asmx?WSDL
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USGS Instantaneous Data
Real time, instantaneous data over the last 60 days
11188 sites, nationally for the US
80 variables
Published by USGS National Water Information System
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Corps of Engineers Water Observations
http://www2.mvr.usace.army.mil/watercontrol/SOAP/WaterML_SOAP.cfc?wsdl
Time series at Corps gages
2210 sites, mainly in Mississippi Basin
80 variables
4954 series
Published by Corps of Engineers, Rock Island District to support their WaterML plugin to HEC-DSS
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Reynolds Creek Experimental Watershed
1 data service84 sites65 variables372 series17.8 million data
http://idahowaters.uidaho.edu/RCEW_ODWS/cuahsi_1_0.asmx?WSDL
Published by USDA-ARS as part of an Idaho Waters project
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Iowa Tipping Bucket Raingages
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Data Manager:Nick Arnold, IIHR
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The CUAHSI Water Data Catalog
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47 services15,000 variables1.8 million sites9 million series4.3 billion data Values
. . . All the data is accessible in WaterML
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Hydro Portal: Interconnection of data portalsbased on the OGC Catalog Services for the Web standard
Customization of ArcGIS GeoPortal Extension 9.3.1 for WaterML web services data
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Working Towards Common SemanticsUsing an Ontology to Reconcile Meanings of Variables
• A hierarchy of concepts• Match variables to leaf concepts
Hydrosphere Chemical
Physical
Biological
Uses EPA Substance Registry System for Chemistry
http://test.hydroseek.net/ontology/Ontology_heirarchy.html
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CUAHSI Hydrologic Information System and the Virtual Observatory
• The cloud and web services• CUAHSI water data services• Building water data networks• Ways of using water data services
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WISKI Water Data Management Systemfrom the Kisters company based in Aachen, Germany
Kisters has adopted the CUAHSI model for water data services
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WISKI Data Systems in the UK and Ireland
The technology to implement CUAHSI water data services in the UK is already deployed….
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WISKI Data Systems in the UK and Ireland
Surface water: 7696Rainfall: 13236Groundwater: 20184Effluent sites: 3658Water quality: 237Areal: 257 (for calculation of areal rainfall)Secondary gauging sites: 43 (for summarizing gaugings)Reservoirs: 239
46,000 sites
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• Inland Northwest Research Alliance (INRA) Water Research Consortium - coalition of eight universities working in cooperation with the US Department of Energy– Boise State University– Idaho State University– Montana State University– University of Alaska Fairbanks– University of Idaho– University of Montana– Utah State University– Washington State University
• ICEWATER – INRA Constellation of Experimental WATERsheds
ICEWATER
http://icewater.inra.org/http://www.inra.org/
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ICEWATER Data• Point Observations
– Stream gages– Water quality sampling– Weather stations– Soil moisture– Snow monitoring– Groundwater
level/quality• Spatially Distributed
Data– Land use/cover– Terrain– Hydrography
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ICEWATER CI Architecture
• Each University establishes a HydroServer node
• A central portal provides support services
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CUAHSI Hydrologic Information System and the Virtual Observatory
• The cloud and web services• CUAHSI water data services• Building water data networks• Ways of using water data services
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How do you access WaterML web services?
Time series datain WaterMLHydroServer, Agency Servers HydroExcel, HydroDesktop, ...
HIS Central
Metadata harvesting Search Services Users
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HydroExcel – one series at a timeSoil water data from Dry Creek Watershed
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HydroDesktop – an Open Source HISA web-based collaborative software design and development environment was set up on CodePlex.com. This site includes a discussion forum, wiki, source code repository and versioning system, and bug/issue tracking system.
http://www.HydroDesktop.org
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HydroDesktopA Hydrologic Information System integrates space, time and modeling
MapWindow SQLite
http://www.hydrodesktop.org – an open source software development
OpenMI
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Pipistrelle : OpenMI Model CompositionsDeveloped at Hydraulic Research Wallingford
CUAHSI Components
Database reader
Database writer
Map Window
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A Social Networking System for Sharing Geospatial Data
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A Question…
…..what is the telescope you use to view it?
Once you have a cloud…..
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Some parting thoughts…..
• The Virtual Observatory is a great idea!
• WaterML is a standard for sharing water observations data
• We in CUAHSI HIS would be happy to collaborate with the VO team
• We would like to learn from what you do