Development of a Community Hydrologic Information System Jeffery S. Horsburgh Utah State University David G. Tarboton Utah State University.

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Presentation transcript:

Development of a Community Hydrologic Information System Jeffery S. Horsburgh Utah State University David G. Tarboton Utah State University

Hydrologic Science Hydrologic conditions (Fluxes, flows, concentrations) Hydrologic Process Science (Equations, simulation models, prediction) Hydrologic Information Science (Observations, data models, visualization Hydrologic environment (Dynamic earth) Physical laws and principles (Mass, momentum, energy, chemistry) It is as important to represent hydrologic environments precisely with data as it is to represent hydrologic processes with equations

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

Provide access to 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 are doing now … Slide from Michael Piasecki, Drexel University

What we would like to do ….. NWIS NAWQA NARR generic request GetValues GetValues ODM Slide from Michael Piasecki, Drexel University CUAHSI HIS

CUAHSI Hydrologic Data Access System A common data window for accessing, viewing and downloading hydrologic information USGSNASANCDCEPANWSObservatory Data

WaterOneFlow Web Services Data accessthrough web services Data storage through web services Downloads Uploads Observatory data servers CUAHSI HIS data servers 3 rd party data servers e.g. USGS, NCDC GIS Matlab IDL Splus, R Excel Programming (Fortran, C, VB) Web services interface Hydrologic Data Access System Website Portal and Map Viewer Information input, display, query and output services Preliminary data exploration and discovery. See what is available and perform exploratory analyses HTML -XML WSDL - SOAP ODM

Web Services A set of protocols that together provide a mechanism for machine-to-machine communication over the Internet Advantages –Interoperability across operating systems and programming languages (XML based) –Application developers interact with web services similar to the way they interact with any other software library within a programming environment

NWIS ArcGIS Excel NCAR Unidata NASA Storet NCDC Ameriflux Matlab AccessJava Fortran Visual Basic C/C++ Some operational services CUAHSI Web Services Data Sources Applications Extract Transform Load

Local Data No efficient online data delivery system Disparate file formats Different types, frequencies, etc. ODM with Web Services ODM with Web Services XML Data Mediation Data Consumption and Analysis Excel Files Excel Files Acces s Files Acces s Files Text Files Text Files Sensor Data Local Data Sources With Multiple Formats Excel Files Excel Files Acces s Files Acces s Files Text Files Text Files Sensor Data Local Data Sources With Multiple Formats Data Consumption and Analysis

CUAHSI Observations Data Model A relational database at the single observation level (atomic model) Stores observation data made at points Metadata for unambiguous interpretation Traceable heritage from raw measurements to usable information Standard format for data sharing Cross dimension retrieval and analysis Streamflow Flux Tower Data Precipitation & Climate Groundwater Levels Water Quality Soil Moisture Data ODM

ODM and HIS in The Little Bear River Test Bed Integration of Sensor Data With HIS Observations Database (ODM) Base Station Computer(s) Data Processing Applications Internet Telemetry Network Environmental Sensors Data discovery, visualization, analysis, and modeling through Internet enabled applications Programmer interaction through web services Internet Workgroup HIS Tools Workgroup HIS Server

Managing Data Within ODM - ODM Tools Load – import existing data directly to ODM Query and export – export data series and metadata Visualize – plot and summarize data series Edit – delete, modify, adjust, interpolate, average, etc.

Bayesian Networks to construct water quality measures from surrogate sensor signals to provide high frequency estimates of water quality and loading Site specific correlations between sensor signals and other water quality variables Sensors, data collection, and telemetry network Bayesian Networks to control monitoring system, triggering sampling for storm events and base flow CUAHSI HIS ODM – central storage and management of observations data End result: high frequency estimates of nutrient concentrations and loadings Little Bear River Integrated Monitoring System

Data Models: Structured data sets to facilitate data integrity and effective sharing and analysis. - Standards - Metadata - Unambiguous interpretation Analysis: Tools to provide windows into the database to support visualization, queries, analysis, and data driven discovery. Models: Numerical implementations of hydrologic theory to integrate process understanding, test hypotheses and provide hydrologic forecasts. Conclusion Advancement of water science is critically dependent on integration of water information Databases Analysis Models ODM Web Services