The CUAHSI Hydrologic Information System...Data Source Network Sites Variables Values {Value, Time,...
Transcript of The CUAHSI Hydrologic Information System...Data Source Network Sites Variables Values {Value, Time,...
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The CUAHSI Hydrologic Information System
Presented by Dr. Tim Whiteaker
The University of Texas at Austin
18 November, 2010
Session T1B
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About the Speaker
PhD 2004PhD 2004 Research AssociateResearch Associate
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What You Will Learn
• What is the CUAHSI Hydrologic Information System (HIS)– History
– Why people use it
• How to access data in HIS
• How to publish your data with HIS
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Outline
• The HIS Story
• HIS components
• Putting the pieces together
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Outline
• The HIS Story
• HIS components
• Putting the pieces together
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HIS Connects People with Data
• The CUAHSI* Hydrologic Information System (HIS) provides web services, tools, standards and procedures that enhance access to more and better data for hydrologic analysis.
*Consortium of Universities for the Advancement of Hydrologic Science, Inc.
his.cuahsi.org
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Niagara Peninsula Decision Support
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Ocean Sciences
What is CUAHSI
• Formed in 2001• Develops infrastructure and
services to advance hydrologic science in US universities
Earth Sciences
AtmosphericSciences
CUAHSI
HISNational Science Foundation Geosciences Directorate
Consortium of Universities for the Advancement of Hydrologic Science, Inc
www.cuahsi.org
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CUAHSI Member Institutions
112 North American universities, and 16 international affiliates
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CUAHSI Hydrologic Information Systems Project
David R. Maidment
The University of Texas at Austin
(HIS Project Leader)
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CUAHSI HIS Development2000
2008
2004
2002
2006
HIS Pilot Project
HIS Development Project
CUAHSI Regional Meetings
2010
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too much too much waterwater
too little too little waterwater
dirty dirty waterwater
water water environmentenvironment
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Please rank these four HIS service categories for helping you.
Conclusion: Data services are the highest priority
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Which of the following data analysis difficulties are most important for HIS to address?
Priorities are:‐ Data formats‐Metadata
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Data IntegrationHydrologic Observations
GIS Data
Weather and Climate Remote Sensing
Digital Watershed
Currently, the focus is on data from monitoring sites at point locations.
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The Result
• WaterML language for describing water data
• National catalog of water data sources
• Free software for data access
Metadata Catalog
WaterML Standards
Services
Software
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Map integrating NWIS, STORET, & Climatic Sites 56 public services
18,000+ variables1.88+ million sites23.3 million seriesReferencing 5.1 billion data values
Metadata Catalog, October 2010
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StreamflowStreamflow
2 services7 variables4,363 sites11,484 series9,493,968 records
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SalinitySalinity
5 services7 variables6,613 sites7,912 series346,813 records
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WaterWaterTemperatureTemperature
6 services11 variables11,158 sites22,953 series1,546,841 records
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Dissolved Dissolved OxygenOxygen
5 services18 variables10,823 sites21,655 series930,571 records
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BacteriaBacteria
1 service21 variables4,801 sites15,483 series297,849 records
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NutrientsNutrients
1 service25 variables5,635 sites52,396 series856,194 records
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3 services7 variables6,228 sites16,576 series785,650 records
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For more on the HIS Storyhis.cuahsi.org
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Outline
• The HIS Story
• HIS components
• Putting the pieces together
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Catalog(Google)
Web Server(CNN.com)
Browser(Firefox)
Access
Catalog harvest
Search
Web Paradigm
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HIS Central
HydroServer HydroDesktopData access
Service registration
Search
Services‐Oriented Architecture for Water Data
Catalog harve
st
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HIS System Overview
Users(HydroDesktop)
USGS
University
Data
HydroServersData Discovery
Data Access
Data
WebService
MetadataMetadataCatalogCatalog
HIS CentralHIS Central
HIS Central
Hydrologic Hydrologic OntologyOntologyData
Registration
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Rainfall & SnowWater quantity and quality
Remote sensing
Water Data
ModelingMeteorology
Soil water
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Point Observations Time Series
A point location in space A series of values in time
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Sources of Observations Data
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Getting Water Data (the old way)Different Query Pages Different Query Responses
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WaterML as a Standard FormatDischarge of the San Marcos River at Luling, June 28 ‐ July 18, 2002
Streamflow data in WaterML language
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WaterML includes location, variables, and time series
location
variable
time series
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Web Pages and Web Serviceshttp://www.safl.umn.edu/ http://his.safl.umn.edu/SAFLMC/cuahsi_1_0.asmx
Uses Hypertext Markup Language (HTML)Uses WaterML
(a Markup Language for water data)
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Point Observations Information Model
Data Source
Network
Sites
Variables
Values
{Value, Time, Metadata}
Utah State Univ
Little Bear River
Little Bear River at Mendon Rd
Dissolved Oxygen
9.78 mg/L, 1 October 2007, 5PM
• A data source operates an observation network• A network is a set of observation sites• A site is a point location where one or more variables are measured• A variable is a property describing the flow or quality of water• A value is an observation of a variable at a particular time• Metadata provide additional information about the value
GetSites
GetSiteInfo
GetVariableInfo
GetValues
WaterOneFlow Service
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WaterOneFlow• Set of query functions • Returns data in
WaterML
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Locations
Variables
Date Ranges
WaterML and WaterOneFlow
GetSitesGetSiteInfoGetVariableInfoGetValues
WaterOneFlowWeb ServiceClient
EPA
UTUSGS
DataRepositories
Data
DataData
EXTRACTTRANSFORMLOAD
WaterML
WaterML is an XML language for communicating water dataWaterOneFlow is a set of web services based on WaterML
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HIS System – HydroServer
Users
University
Data
HydroServersData Discovery And Access
Data Access
Data Registration
WebService
USGS
Data
MetadataMetadataCatalogCatalog
HIS CentralHIS Central
HIS Central
Hydrologic Hydrologic OntologyOntology
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HydroServer Goals
• A platform for publishing space‐time hydrologic datasets that:– Provides local control of data
– Makes data universally available
– Is open source (hydroserver.codeplex.com)
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GIS Data
HydroServer
Ongoing Data Collection
Point Observations Data
Historical Data Files
ODM Database
Data presentation, visualization, and analysis through Internet
enabled applications
Internet Applications
GetSitesGetSiteInfoGetVariableInfoGetValues
WaterOneFlowWeb Service
WaterML
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ICEWATER – A Regional HIS
WA
ORID
MT
UT
AZ
CA
NVAK
WY
CO
NM
• ICEWATER – INRA Constellation of Experimental WATERsheds
• Coalition of 8 universities
• Point Observations– Stream gages– Water quality sampling– Weather stations– Soil moisture– Snow monitoring– Groundwater level/quality
• Spatially Distributed Data– Land use/cover– Terrain– Hydrography
http://icewater.inra.org
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Operational HydroServers
http://icewater.usu.edu/ http://www.his.npca.ca/hydroserver/
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� KISTERS AG KISTERS group 48 24/11/2010
Import/Export Framework
SOS
KISTERS Telemetry
WISKI / Hydstra
HydroServer Alternatives ‐ KISTERS
SOS APIs
XHydro
APIs
External Client Application
HydroGET, ….
Vendor driver
OpenMI
CUAHSIinternal
WMS/WFS
FilesDBhttp(s)ftp DBDB
CUAHSI
CUAHSI
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Why Publish Data with HIS
Recognition Public serviceCollaboration Cost savings
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What Have We Covered
• HIS Overview
• HydroServer– ODM
– WaterML
Users
University
Data
HydroServersData Discovery And Access
Data Access
Data Registration
WebService
USGS
Data
MetadataMetadataCatalogCatalog
HIS CentralHIS Central
HIS Central
Hydrologic Hydrologic OntologyOntology
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HIS System – HIS Central
Users
University
Data
HydroServersData Discovery And Access
Data Access
Data Registration
WebService
USGS
Data
MetadataMetadataCatalogCatalog
HIS CentralHIS Central
HIS Central
Hydrologic Hydrologic OntologyOntology
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• Publishers– Register a data service
• Users– Find a data service
• Supported by– Metadata Catalog
– Hydrologic Ontology
HIS Central
http://hiscentral.cuahsi.org
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Data Series – Metadata description
Space
Variable, Vi
Site, Sj
End Date Time, t2
Begin Date Time, t1
Time
Variables
Count, C
There are C measurements of Variable Vi at Site Sjfrom time t1 to time t2
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Map integrating NWIS, STORET, & Climatic Sites 56 public services
18,000+ variables1.88+ million sites23.3 million seriesReferencing 5.1 billion data values
Metadata Catalog, October 2010
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Streamflow Nutrients
Water Temperature
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Conceptual Framework
• Chemical descriptions from EPA/USGS Substance Registry System
• Physical descriptions from CF Conventions– NetCDF Climate & Forecast; 137 variables
• Biological descriptions from Integrated Taxonomic Information System
http://cf‐pcmdi.llnl.gov/
http://www.epa.gov/srs/
http://www.itis.gov/
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Thematic Concepts
Core Concept Property Branch Leaf
Variables
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HydroTagger
Each Variable in your data is connected to a corresponding Concept
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WaterWaterTemperatureTemperature
6 services11 variables11,158 sites22,953 series1,546,841 records
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HIS Central Web Page
http://hiscentral.cuahsi.org
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HIS Central Web Service• Programmatic methods to query the national metadata catalog
• Search by:– Location
– Variable (concept)
– Date Range
– Data source (WaterOneFlow service)
http://hiscentral.cuahsi.org/webservices/hiscentral.asmx
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HIS System – HIS Desktop
University
Data
HydroServersData Discovery And Access
Data Access
Data Registration
WebService
USGS
Data
MetadataMetadataCatalogCatalog
HIS CentralHIS Central
HIS Central
Hydrologic Hydrologic OntologyOntology
Users(HydroDesktop)
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HIS in Familiar Software
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HydroExcel
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Choosing a Service
Tell HydroExcel which web service to use
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Choosing a Site
Find sites and variables available from the web service
Let’s use this site
Google Earth opens, showing our sites
GetSitesGetSiteInfoGetVariableInfoGetValues
WaterOneFlowWeb Service
WaterML
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Downloading Time SeriesInput our site and a desired variable,
e.g., net radiation, and tell HydroExcel to get the time series for
March, 2007
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Exploring the Time Series
Explore time series using analytical
capabilities of Excel
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HydroExcel Limitations
• Can’t hold much data
• No dates before year 1900
• Not truly geospatially enabled
• Not free
• How can I use HIS in software built to work with HIS from the ground up?
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HydroDesktop• Free, open source solution for HIS data access
• www.hydrodesktop.org
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GIS fully integrated with HIS
‐Metadata catalog‐ Ontology keywords‐WaterOneFlow/WaterML
DiscoveryAccessAnalysis
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Built‐in Analysis
• Tables
• Graphs
• Editing
• Export
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Customizable with Plug‐ins
• Community development
• Build on the HydroDesktop framework
HydroModeler
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Outline
• The HIS Story
• HIS components
• Putting the pieces together
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Services‐Oriented Architecture for Water Data
WaterML
HIS Central
HydroServer HydroDesktopData access
Search
Service registration
Catalog harve
st
Data Publisher
Catalog
User
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The Road Ahead
• WaterML 2.0 – Broader collaboration
• World Meteorological Organization• Open Geospatial Consortium (OGC)• Hydrology Domain Working Group
– Towards an OGC standard• IEs – groundwater, surface water…• RFC targeted for December, 2010
• HydroServer – Data access control• HydroDesktop – Refinement
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The Road Further Ahead
HydroCatalog
HydroServer HydroDesktopWFSSOS
(WaterML 2)
CSW(register)
Using OGC Standards
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Put Your Dots on the Map
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Start Using HIS
• HIS Website – his.cuahsi.org
• User Support Specialist – Yoori Choi