文档介绍：CUAHSI supports the water science community by (among other things): ? developing , supporting, and operating research infrastructure; ? improving and promoting access to data, information and models University Members Support from NSF Problem Statement works Remote sensing Model Output We need new ways of handling the growing quantity of diverse data resources CUAHSI HIS Goal To enhance hydrologic science by facilitating user access to more and better data for testing hypotheses and analyzing processes UTexas USU CUAHSI NWIS Storet NCDC TWDB 4 HIS Overview HydroServer Ongoing Data Collection Point Observation Time Series Historical Data Files ODM Database GetSites GetSiteInfo GetVariableInfo GetValues WaterOneFlow Web Service WaterML Horsburgh, J. S., D. G. Tarboton, D. R. Maidment and I. Zaslavsky, (2008), A Relational Model for Environmental and Water Resources Data, Water Resour. Res., 44: W05406, doi: ? Set of query functions (API) ? Returns data in WaterML WaterML and WaterOneFlow WaterOneFlow is a set of web services that return data in a WaterML format ISO Time value qualifier GetVariables GetValues HIS Central 66 services; 18,000 variables; million sites; 29 million series; billion data Values … and growing Centralized Observation Catalog with semantic mediation to enable search web services Metadata catalog 9 USGS Instantaneous Data Real time, instantaneous data over the last 60 days 11188 sites, nationally for the US 80 variables Published by USGS National Water Information System NCDC Integrated Station Hourly Data Hourly weather data up to 36 hours ago 13,628 sites across globe 34 variables Published by National Climate Data Center and populated with weather observations from national weather services ?WSDL