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Two NSF Data Services Projects

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This report highlights the development and implementation of a services-oriented architecture for publishing and accessing hydrologic time-series data. It emphasizes the use of WaterML and WaterOneFlow web services, which standardize water observations from various sources, enabling seamless interaction between systems. The report covers the National Water Metadata Catalog, collaboration with federal agencies, and the Hydro-NEXRAD project aimed at providing real-time radar data. It discusses accomplishments, limitations, and future plans to enhance hydrologic research accessibility and data integration capabilities.

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Two NSF Data Services Projects

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  1. Two NSF Data Services Projects Rick Hooper, President Consortium of Universities for the Advancement of Hydrologic Science, Inc.

  2. Services-Oriented Architecture for Publishing Time-Series Data • Links geographically distributed information servers through internet • Web Services Description Language (WSDL from W3C) • We designed WaterMLas a web services language for water data • Functions for computer to computer interaction HIS Servers in the WATERS Network HIS Central at San Diego Supercomputer Center Web Services

  3. Synthesis and communication of the nation’s water data http://his.cuahsi.org Government Water Data Academic Water Data National Water Metadata Catalog Hydroseek WaterML

  4. CUAHSI National Water Metadata Catalog • Indexes: • 50 observation networks • 1.75 million sites • 8.38 million time series • 342 million data values NWIS STORET TCEQ

  5. Hydroseek: Data Access Federal Agencies, State Agencies, and Academic Researchers

  6. Map-based or Basin-based Search

  7. Enter Data Type

  8. Results Chesapeake Bay Program EPA USGS

  9. Get Data with one request! Data Cart

  10. Accomplishments • Observations Data Model (ODM) is robust; • WaterOneFlow web services provide reliable access to ODM data; • WaterML is a common language for water observations data from academic and government sources • National Water Metadata Catalog is the most comprehensive index of the nation’s water observations presently existing.

  11. Limitations • Focus on observations data measured as time series at fixed point locations; • Needs adaptation for moving sensors, transects, one-time data collections and field surveys; • Need to work more on • Coverages for weather, climate and remote sensing • Linking data and models • Linking geographic features Observations Models WaterML Geography Coverages

  12. CUAHSI and Federal Agencies • Signed CRADA with US Geological Survey on instrumentation • Signed MoU with USGS and National Climatic Data Center (NOAA) on data services • Developing MoU with EPA Office of Water on data services

  13. HIS Team and Collaborators • University of Texas at Austin – David Maidment, Tim Whiteaker, Ernest To, Bryan Enslein, Kate Marney • San Diego Supercomputer Center – Ilya Zaslavsky, David Valentine, Tom Whitenack • Utah State University – David Tarboton, Jeff Horsburgh, Kim Schreuders, Justin Berger • Drexel University – Michael Piasecki, Yoori Choi • University of South Carolina – Jon Goodall, Tony Castronova

  14. HIS Overview Report • Summarizes the conceptual framework, methodology, and application tools for HIS version 1.1 • Shows how to develop and publish a CUAHSI Water Data Service • Available at: http://his.cuahsi.org/documents/HISOverview.pdf

  15. Hydro-NEXRAD: A Community Resource for Hydrologic Research and Applications Project Goal: …to provide the hydrologic community with ready access to the vast archives and real-time information collected by the national network of NEXRAD radars. What is it? A WEB-based prototype information retrieval system that allows ordering customized radar-rainfall maps for hydrologic applications based on WSR-88D data. Science Goals • Extreme events: flash-floods, urban flooding, debris flow, landslides, etc. • Hydrologic forecasting: distributed models of water and contaminant transport, flood forecasting • Variability, predictability, complexity of water cycle • Support of WATERS network • Remote sensing …and much more…

  16. Basin centric (USGS HUC System) • Relational database (large-scale prototype, 40 radars, over 250 radar years) • Web-based GUI (map server, database) • Extensive metadata base: basin, radar, points • Numerous radar-rainfall algorithms • Highly customizable (e.g. resolution, map projection) • High performance, ease of use • Modular design • Over 60 beta users

  17. Updates, Plans & Challenges • Handling super resolution data and producing sub kilometer resolution rainfall products (under testing and evaluation) • Adaptation to real-time service for the community (working prototype exists) • Expanding to full national coverage (NCDC? CUAHSI?) • Expanding to multisensor (rain gauge, satellite data) capability (planned, algorithms exist) • Comprehensive performance evaluation (in progress) • Dynamic and modular nature of the system: ready for implementation of new ideas (fundamental design feature) • Facing the question “What’s next?” Upkeep, growth, architecture: central or distributed, etc. etc.

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