Ocean Sciences What is CUAHSI? CUAHSI – Consortium of Universities for the Advancement of Hydrologic Science, Inc Formed in 2001 as a legal entity Program.

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Presentation transcript:

Ocean Sciences What is CUAHSI? CUAHSI – Consortium of Universities for the Advancement of Hydrologic Science, Inc Formed in 2001 as a legal entity Program office in Washington (5 staff) NSF supports CUAHSI to develop infrastructure and services to advance hydrologic science in US universities Earth Sciences Atmospheric Sciences UCAR CUAHSI Unidata HIS National Science Foundation Geosciences Directorate

CUAHSI Member Institutions 115 US Universities as of November 2007

Rainfall & Snow Water quantity and quality Remote sensing Water Data Modeling Meteorology Soil water

Observation Stations Ameriflux Towers (NASA & DOE)NOAA Automated Surface Observing System USGS National Water Information SystemNOAA Climate Reference Network Map for the US Build a common window on water data using web services

HIS for the WATERS Network HIS Central at San Diego Supercomputer Center

CUAHSI Point Observation Data Services 1.Data Loading – Put data into the CUAHSI Observations Data Model 2.Data Publishing – Provide web services access to the data 3.Data Indexing – Summarize the data in a centralized cataloging system

Data Loading Data Entry – Put the data into the ODM database (SQL/Server) – OD Data Loader, Streaming data loader, SQL/Server Integration Services Data Editing – ODM Tools – Check (1) View and graph data in ODM Tools CUAHSI Observations Data Model (ODM)

Data Publishing Data Storage – Move the ODM to a publication server – Wrap it with CUAHSI web services code Data Access – Provide the WSDL address – Use CUAHSI WaterOneFlow web service functions – Check (2) Web services spreadsheet for site locations and data series

Locations Variable Codes Date Ranges WaterML and WaterOneFlow GetSiteInfo GetVariableInfo GetValues WaterOneFlow Web Service Client STORET NAM NWIS Data Repositories Data EXTRACT TRANSFORM LOAD WaterML WaterML is an XML language for communicating water data WaterOneFlow is a set of web services based on WaterML

WaterOneFlow Set of query functions Returns data in WaterML

SNOTEL in WaterML sites 10 variables

Point Observations Information Model for USGS Daily Values Data Source Network Sites Variables Values {Value, Time, Qualifier} USGS Streamflow gages Neuse River near Clayton, NC Discharge, stage (Daily or instantaneous) 206 cfs, 13 August 2006 GetSites GetSiteInfo GetVariables GetVariableInfo GetValues

Observations Catalog Specifies what variables are measured at each site, over what time interval, and how many observations of each variable are available

Hydrologic Information Server Microsoft SQLServer Relational Database Observations Data Geospatial Data GetSites GetSiteInfo GetVariables GetVariableInfo GetValues DASH – data access system for hydrologyWaterOneFlow services ArcGIS Server

We are at a tipping point …. Web pages Web services ComputerPerson Computer Internet Computer People interact with a remote information server Networks of information servers provide services to one another

Information communication Water web pages Water web services HyperText Markup Language (HTML) Water Markup Language (WaterML)

Search multiple heterogeneous data sources simultaneously regardless of semantic or structural differences between them Objective NWIS NARR NAWQA NAM-12 request request return return What we used to do ….. Michael Piasecki Drexel University

Semantic Mediator What we are doing now ….. NWIS NAWQA NARR generic request GetValues GetValues HODM Michael Piasecki Drexel University

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

Definition The CUAHSI Hydrologic Information System (HIS) is a geographically distributed network of data sources and functions that are integrated using web services so that they operate as a connected whole.