Hydrologic Information System

for the NationIlya Zaslavsky

Spatial Information Systems LabSan Diego Supercomputer Center

UCSD

UCSD Seminar, February 23, 2009

http://his.cuahsi.orghttp://hiscentral.cuahsi.orghttp://hydroseek.nethttp://river.sdsc.edu/ucsddashhttp://wron.net.au/DemosII/Modules/ODMKMLGatway.aspxhttp://maxim.ucsd.edu/mattsmaps/storet.aspx

SDSC Spatial Information Systems LabResearch 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 (SVG, WMS/WFS)• Support of spatial data projects at SDSC

and beyond

Mediator

LegendGenerator

MapAssembler

Ontology

…

GRID SERVICESFOR MAP INTEGRATION

Mediator

LegendGenerator

MapAssembler

Ontology

…

GRID SERVICESFOR MAP INTEGRATION

services

In Geosciences (GEON, CUAHSI, CBEO,…)

Spatial web services

FederalAgencies

Figure 1.26 The Geography Network.

ESRICounty spatial data and toxicant information

Telesis, other localNon-profits

CA state

WSDL

WSWSDL

WSWSDL

WSWSDL

WSWSDL

WSWSDL

WS

Student projects

The CHI ME Model

In regional development (NIEHS SBRP, CRN…)

In Neurosciences (BIRN, CCDB)

http://spatial.sdsc.edu/lab/

Contact: zaslavsk@sdsc.edu

Consortium of Universities for the Advancement of Hydrologic Science, Inc.

An organization representing more than one hundred United States universities, receives support from the

National Science Foundation to develop infrastructure and services for the advancement of hydrologic

science and education in the U.S. http://www.cuahsi.org/

122 US Universities as

of July 2008

CUAHSI HIS: NSF support through 2012 (GEO)

Partners:Academic: 11 NSF hydrologic observatories, CEO:P projects,

LTER…Government: USGS, EPA,

NCDC, NWS, state and localCommercial: Microsoft, ESRI,

KistersInternational: Australia, UK

Standardization: OGC, WMO (Hydrology Domain WG, CHy);

adopted by USGS, NCDC

An online distributed system to support the sharing of hydrologic data from multiple repositories and databases via standard water data service protocols;

software for data publication, discovery, access and integration.

What is the CUAHSI HIS?

Observation Stations

Ameriflux Towers (NASA & DOE) NOAA Automated Surface Observing System

USGS National Water Information System NOAA Climate Reference Network

Map for the US

Build a common window on water data using web services

Water Data Web Sites

NWISWeb site output# agency_cd Agency Code# site_no USGS station number# dv_dt date of daily mean streamflow# dv_va daily mean streamflow value, in cubic-feet per-second# dv_cd daily mean streamflow value qualification code## Sites in this file include:# USGS 02087500 NEUSE RIVER NEAR CLAYTON, NC#agency_cd site_no dv_dt dv_va dv_cdUSGS 02087500 2003-09-01 1190USGS 02087500 2003-09-02 649USGS 02087500 2003-09-03 525USGS 02087500 2003-09-04 486USGS 02087500 2003-09-05 733USGS 02087500 2003-09-06 585USGS 02087500 2003-09-07 485USGS 02087500 2003-09-08 463USGS 02087500 2003-09-09 673USGS 02087500 2003-09-10 517USGS 02087500 2003-09-11 454

Time series of streamflow at a gaging station

http://his.cuahsi.org/odmdatabases.html

CUAHSI Observations Data Model

Information communication

• Water web pages• Water web services

HyperText Markup Language (HTML)

Water Markup Language (WaterML)

Water Data Services• Set of query

functions• Returns data in WaterML

NWIS Daily Values (discharge), NWIS Ground Water, NWIS Unit Values (real time), NWIS Instantaneous Irregular Data, EPA STORET, NCDC ASOS, DAYMET, MODIS, NAM12K, USGS SNOTEL, ODM (multiple sites)

Test bed HISServers

Central HIS servers

ArcGIS

Matlab

IDL, R

MapWindow

Excel

Programming (C#, VB..)

Desktop clients

Customizable web interface

(DASH)

HTML - XMLW

SDL - SO

AP

Modeling (OpenMI)

Global search (Hydroseek)

Water Data Web Services, WaterML

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ETL

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HIS LiteServers

External data providers

Deployment to test beds

Other popular online clients

ODM DataLoader

Streaming Data Loading

Ontology tagging (Hydrotagger)

WSDL and ODM registration

Data publishing

ODMTools

Server config tools

HIS CentralRegistry & Harvester

Hydrologic Information System Service Oriented Architecture

HIS

Des

ktop

Central HIS Data

Services

Catalog

Semantic Tagging of Harvested Variables

Hydroseekhttp://www.hydroseek.net

Supports search by location and type of data across multiple observation networks including NWIS, Storet, and academic data

How we work with agencies on web service access to observational data

1. Establish an agreement with the agency on joint development of water data services, identify agency partners (ideally, with time to support joint work)

2. Identify the scope of the service, databases to be exposed, and access control, assign network and vocabulary codes

3. Map semantics of the service to WaterML semantics, and verify with the agency

4. Include discussion of agency data and interoperability issues in the context of OGC Hydrology Domain WG (if needed)

5. Develop a first draft of the web service6. Unit testing, over a series of validation cases developed jointly with the agency7. Harvest an observations metadata catalog for agency data, to be housed

either at SDSC or at the agency8. Develop a procedure for catalog updates9. Register the water data service at HISCentral (including mapping of variables

to ontology terms), and test it using HydroSeek and HydroExcel. Document the service

10. Review and test the service together with the agency, for possible approval as “operational”

Against the NIH Syndrome2006:► CUAHSI HIS web services are discussed on the BASINS mailing list as a

new way to access hydrologic data. The list is mostly used by hydrologists and developers outside academia;

► NCDC develops ASOS web services following WaterML2007: ► MOU with USGS; USGS is developing WaterML-compliant GetValues

service;► GLEON uses an early version of ODM to develop their own schema

(VEGA);► Phoenix LTER is developing ODM (in MySQL) and WaterML services (in

Java);► A Google Earth-based client for CUAHSI web services is developed at

CSIRO, Australia;► Deployment to 11 hydrologic observatory test beds, + CBEO (CEOP

project)2008: ► KISTERS develops WaterML-compliant web services over their database,

for a client;► MapWindow open source GIS develops WaterOneFlow parsers;► Florida, Texas and Idaho use ODM and WaterOneFlow web services to

provide access to state data repositories; New Jersey is considering the same;

► Another CEOP project, at UC-Davis, is implementing ODM (in Postgres) and web services (in Java);

► Stroud Water Research Center; WRON; AWI… many that we don’t know…

► Now SBRP: data from UCSD, UA, more?

Visualization and Analysis of Large Datasets► Tiled wall (Falko Kuester)

► OLAP cubes for repositories (via Excel and online GIS)► Google Earth client

Coming soon…► All Hands Meeting of CUAHSI HIS at SDSC; April 6-7

2009► Meetings at BOM, CSIRO, global water initiative

(second half of March)► Collaboration with World Meteorological Organization

(joint charter between WMO’s CHy and OGC’s Hydrology DWG)

► Open Geospatial Consortium: Hydrology Domain Working Group, focus on WaterML 2.0

► Automated facilities for uploading/hosting observations data, CZO

► HIS capacity building workshop in Kuala Lumpur (plus a few workshops in the US)

► Integration with real-time (via DataTurbine), with hydrologic models (via OpenMI, CSDMS), animations, spatio-temporal interpolation

► Desktop HIS (this year)

Summary• Generic method for managing and publishing observational

data– Supports many types of point observational data– Overcomes syntactic and semantic heterogeneity using a standard

data model and controlled vocabularies– Supports a national network of observatory test beds but can grow!

• WaterML is a standard language for consistently communicating water observations data from academic and government sources using web services

• National Water Metadata Catalog is the most comprehensive index of the nation’s water observations presently existing

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