1. Update On The NEXRAD Agency Plans For Near Real-Time WSR-88D Base Data Collection And Distribution Tim Crum, Ph.D. Radar Operations Center (ROC) NWS Focal Point For WSR-88D Operational Issues NEXRAD Focal Point For Archive And Real-Time Data Distribution Issues 26 September 2002 OU Stakeholder Workshop On Real-Time WSR-88D Level II Data Held At University of Oklahoma, Norman, OK

2. September 2002Slide 2 Objectives State NEXRAD Agency Requirements For WSR-88D Level II Archive Data And Near Real-Time Base Data Access State NWS Plans For Achieving These Requirements State NEXRAD Program Management Committee (NPMC) Guidelines For Connections To WSR-88D Base Data Streams In Near Real Time –Interim –Final Answer Questions/Hear Suggestions

3. September 2002Slide 3 NEXRAD Agency Requirements For WSR-88D Level II Archive Data And Near Real-Time Base Data Access No DOT Or DOD Archive Data Requirements –NWS Has Funded All Level II Data Collection And Archive Costs, Beyond DOD Recorder Acquisition No DOT Real-Time Base Data Requirements –No Base Data Distribution System (BDDS) At DOT WSR- 88Ds No DOD Real-Time Base Data Requirements Except At 8 Of 26 DOD WSR-88Ds –No BDDS At Remaining DOD WSR-88Ds NWS Has Archive Data Requirements To Meet R&D, Training, Testing And Other Agency Needs

4. September 2002Slide 4 NEXRAD Agency WSR-88D Data Requirements (Continued) NWS Near Real-Time Base Data Requirements To Meet NCEP Operational Requirements –BDDS On All NWS WSR-88D RPGs Each BDDS Has 4 User Ports –Data Timeliness And Reliability Same As For RPCCDS ( 95%) Future NWS Requirements For Archive Or Near Real-Time Access To New WSR-88D Data/Products To Be Determined – Not Necessarily All/Any Of The Following Will Be Distributed In Near Real Time Nor Archived

5. September 2002Slide 5 Possible WSR-88D Future Data Flows

6. September 2002Slide 6 Archive Data –Level II Recorders, Circa 1994, Become Unsupportable In 2003 –NWS Planned For Recorder Replacement With Budget Request –Proof-Of-Concept CRAFT Project Demonstrated Near Real- Time Data Ingestion At NCDC Works On-Site Tape Recording Suspended At 55 Sites Near Real-Time Data Access For NEXRAD Agency And External Users Demonstrated In CRAFT NWS Plans For Achieving These Requirements

7. September 2002Slide 7 ROC Explored 9 Options Of Collecting And Transmitting Level II Data Electronically –Lowest Cost Options A Combination Of Use Of AWIPS WAN And Private Telco Frame Relay To Send Data To NWSTG A Combination Of Use Of Internet2 And Private Telco Frame Relay To Send Data To NWSTG –NWSTG Routes Data To NCDC, NCEP, External Users –Data Compression on RPG or BDDS (BZIP2) –NWS Control Over Operationally Required Data Streams NWS Expects To –Determine Final Communications Architecture By End Of 2002 –Begin Turning On Data Flows By Selected Approach NET October 2003 NWS Plans For Achieving These Requirements (Continued)

8. September 2002Slide 8 NPMC Guidelines For Connections To WSR-88D Base Data Streams In Real Time Intended To Minimize Impact On Forecast Office Staff Interim –NWS Considers Today’s Situation As An “Interim” Phase –External Groups Can Request Connections To Existing BDDS NEXRAD Agency Requirements To Be Met First No Compression Equipment Installed, Except For NEXRAD Agency Users Final –NWS Considers The “Final” Phase As When The Last Of The Required WSR-88D Systems Are Sending Data To The NWSTG External Users Receive Data Via Broadcast From NWSTG Only NEXRAD Agencies/Federal Agencies Can Connect To BDDS Guidelines And Other Base Data Information Can Be Found On ROC Home Page: http://www.osf.noaa.gov/BDCI/

9. September 2002Slide 9 Answer Questions And Listen To Comments And Suggestions

10. September 2002Slide 10 Graphic Description AWIPS WAN Option

11. September 2002Slide 11 Graphic Description Internet 2 Option