1

A Community Hydrologic Prediction System

ACWI Subcommittee on Hydrology

January 29, 2004

2

A Community Hydrologic Prediction System

• End-to-end system using a services infrastructure– Control– Algorithm– Data– Display– Security

• For the Community to perform research

• For Operations to provide valued science, software, and information to save lives, manage water resources, and enhance America’s economy

3

A Community Hydrologic Prediction System

• Goals we all share– Easy exchange of data, parameters, and algorithms– A short path from research to operations– A community able to work together

• Leveraging experience from– USWRP Weather Research and Forecasting (WRF)– USGS Modular Modeling System (MMS)– HEC Corps Water Management System (CWMS)– NWS River Forecasting System (NWSRFS)– USBR RiverWare– EU European Flood Forecasting System (EFFS)– …

4

A Community Hydrologic Prediction System

• CHPS is more than the sum of the parts– Individual research is recognized as more

valuable because of a closer link to operations– Researchers can concentrate on their specific

studies and use CHPS infrastructure, data access, and other science algorithm services

– Operational information and predictions benefit from being able to use new science sooner

5

A Community Hydrologic Prediction System

• CHPS – a service based architecture

AlgorithmServices

DataServices

ControlServices

DisplayServices

SecurityServices

6

A Community Hydrologic Prediction System

• Data Definition - A First Step Forward – A community supported data exchange

definition• An HML based on XML

– Need to define HML structure and tags• Workshops• Working Groups

– HML Document Type Definition web site

7

A Community Hydrologic Prediction System

• NOAA support for Community activities– NWS/OHD provides the arms and legs to

support an HML Document Type Definition web site

• ACWI web site?

– NWS/OHD provides the effort to organize an HML definition workshop

• In collaboration with ACWI?• Spring AGU?• Washington, D.C.?