Near-real-time precipitation virtual sensor using NEXRAD data

Yong Liu, David J. Hill, Alejandro Rodriguez, Luigi Marini, Rob Kooper, Joe Futrelle, Barbara Minsker, James D. Myers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this demonstration paper, we describe the technologies and implementations that allow near real-time creation of new virtual precipitation sensors using NEXRAD Level II streaming data at user-specified point locations and time intervals in an integrated digital watershed with a Google Map-based web interface. The spatiotemporal and thematic transformation steps to produce such new time series data stream are implemented as a set of scientific workflows. A streaming data ontology is developed to handle temporal proximity concepts such as "previous" and "next" for irregular temporal data streams. Data and metadata management is provided by a semantic content management middleware. The new point-based virtual sensor can lower the barriers of using NEXRAD data for many hydrological applications.

Original languageEnglish (US)
Title of host publicationProceedings of the 16th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, ACM GIS 2008
Pages523-524
Number of pages2
DOIs
StatePublished - 2008
Event16th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, ACM GIS 2008 - Irvine, CA, United States
Duration: Nov 5 2008Nov 7 2008

Publication series

NameGIS: Proceedings of the ACM International Symposium on Advances in Geographic Information Systems

Other

Other16th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, ACM GIS 2008
CountryUnited States
CityIrvine, CA
Period11/5/0811/7/08

Keywords

  • Digital watershed
  • NEXRAD
  • Ontology
  • Precipitation
  • Spatiotemporal and thematic transformation
  • Virtual sensor
  • Workflow

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Computer Science Applications
  • Modeling and Simulation
  • Computer Graphics and Computer-Aided Design
  • Information Systems

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