Towards Better Utilization of Towards Better Utilization of NEXRAD Data in HydrologyNEXRAD Data in Hydrology

Anton Kruger, University of IowaAnton Kruger, University of IowaAGU Fall MeetingAGU Fall Meeting

San Francisco, December 11, 2006San Francisco, December 11, 2006

UCAR/UnidataUCAR/Unidata

Princeton UniversityPrinceton University

National Climatic National Climatic Data CenterData Center

The University The University of Iowaof Iowa

Project ParticipantsProject Participants• The University of Iowa (Lead)The University of Iowa (Lead)

– W.F. Krajewski (PI)W.F. Krajewski (PI)– A.A. Bradley, A. Kruger, R.E. Lawrence, R. A.A. Bradley, A. Kruger, R.E. Lawrence, R.

Goska, B. Seo, C GunyonGoska, B. Seo, C Gunyon

• Princeton UniversityPrinceton University– J.A. Smith (PI)J.A. Smith (PI)– M. Steiner, M.L.BaeckM. Steiner, M.L.Baeck

• National Climatic Data CenterNational Climatic Data Center– S.A. Delgreco (PI)S.A. Delgreco (PI)

• UCAR/Unidata Program CenterUCAR/Unidata Program Center– M. K. Ramamurthy (PI)M. K. Ramamurthy (PI)– W.J. WeberW.J. Weber

Project GoalProject Goal

……to provide the to provide the science communityscience community with ready with ready access to the vast archives and real-time access to the vast archives and real-time information collected by the national network of information collected by the national network of NEXRAD radarsNEXRAD radars..

The main focus is on radar-rainfall data for use The main focus is on radar-rainfall data for use in in hydrologyhydrology, , hydrometeorologyhydrometeorology, , and water and water resourcesresources. .

User/Client’s ViewUser/Client’s View

““Find all the 2002 storms over the Find all the 2002 storms over the Ralston Creek Ralston Creek watershedwatershed with with mean mean arealareal precipitationprecipitation greater than greater than X mmX mm, and with a , and with a spatial extent of spatial extent of more than Z kmmore than Z km22, with a , with a duration of less than duration of less than N hoursN hours. I want the data in . I want the data in GeoTIFFGeoTIFF””

User/Client

Program Library

Get data

Connect and query

Get URIs

HTTP

Data Archive

Metadata Archive

UI

Metadata Archive

UI

““Find all the 2002 storms over the Find all the 2002 storms over the Ralston Ralston Creek watershed Creek watershed with with mean arealmean areal precipitationprecipitation greater than greater than X mmX mm, and with a , and with a spatial extent of more than Z kmspatial extent of more than Z km22, with a , with a duration of less than N hoursduration of less than N hours. I want the . I want the data in data in GeoTIFFGeoTIFF””

Web Services(SOAP)

Interface OverviewInterface Overview

Interface OverviewInterface Overview

Interface OverviewInterface Overview

Map LayersMap Layers

Map LayersMap Layers

Domain SelectionDomain Selection

Drill DownDrill Down

Drill DownDrill Down

Drill DownDrill Down

GridsGrids

GridsGrids

Mark & Select BasinMark & Select Basin

Mark & Select BasinMark & Select Basin

Which Radar?Which Radar?

Which Radar?Which Radar?

Which Radar?Which Radar?

Select Output GridSelect Output Grid

Select DateSelect Date

Color-coded with metadata

Browse MetadataBrowse Metadata

Query MetadataQuery Metadata

Query MetadataQuery Metadata

Product SelectionProduct Selection

Product SelectionProduct Selection

Rainfall Estimation AlgorithmsRainfall Estimation Algorithms

Output FormatOutput Format

Ready To GoReady To Go

Ready To GoReady To Go

You Will Be Sent an e-mail When Job Is Done

Check On Job StatusCheck On Job Status

Compute Engine

Metadata Archive

CUAHSI HISData Archive

Unidata

Extreme Events

University A

Runoff Model

Data Archive

Metadata Archive

NCDC

Injects NEXRAD Data

University B

Internet

Request Request

Some StatisticsSome Statistics

• Total size of radar data: 130 TBTotal size of radar data: 130 TB• 8,492,580 files8,492,580 files• Mosaics 34559Mosaics 34559• Metadata Rows in Database:4,319,990Metadata Rows in Database:4,319,990• Radars: 33Radars: 33• Radar-years: 84:Radar-years: 84:

– For KMLB: 2 yearsFor KMLB: 2 years– KTLX: 9 yearsKTLX: 9 years– KDVN: 6 yearsKDVN: 6 years– KVTX: 2 yearsKVTX: 2 years

Thank You Thank You

A Comprehensive Framework A Comprehensive Framework for Use of NEXRAD Data in for Use of NEXRAD Data in

Hydrometeorology and Hydrometeorology and HydrologyHydrology

NSF Sponsored, Award ATM 0427422NSF Sponsored, Award ATM 0427422