NOUS41 KWBC 011831
PNSWSH
Technical Implementation Notice 12-53
National
Weather Service Headquarters Washington DC
232 PM EDT Thu
Nov 1 2012
To: Subscribers
-Family of Services
-NOAA Weather Wire Service
-Emergency Managers Weather
Information Network
-NOAAPORT
Other NWS Partners and Employees
From: Richard J. Vogt
Director, WSR-88D Radar Operations
Center
Subject: WSR-88D Build 13.1 Beta Test and Deployment
Started October 29, 2012
The NEXRAD
Program started a Beta Test of Radar Data Acquisition/Radar Product Generator (RDA/RPG)
Build 13.1 the week of October 29, 2012 at Wichita, KS (KICT). The Build 13.1
Beta Test will also be conducted at the following three sites:
SITE APPROXIMATE
START DATE
______________________ ___________
Vance AFB, OK
(KVNX) 13 November
Yuma, AZ
(KYUX) 27 November
South Kauai,
HI (PHKI) 4 December
A summary of
the major changes in Build 13.1 follows:
1. Re-implements the Automated Volume Scan Evaluation
and Termination (AVSET) and improved Clutter Mitigation Decision (CMD)
algorithms at FAA and NWS (redundant RDA) WSR-88Ds where the Dual Polarization
modification has been completed. AVSET terminates the current volume scan after
the radar has scanned all elevations with significant reflectivity returns
resulting in lower elevations scanned more frequently. The improved CMD
algorithm (Dual Polarization variables added) better identifies ground clutter
for removal by radar filters.
2. Implements
the 2-Dimensional Velocity Dealiasing Algorithm
(2DVDA). This new algorithm increases the area of properly dealiased velocity data and reduces the number of false mesocyclone detections by the Mesocyclone Detection Algorithm.
Additional 2DVDA information is available at:
http://www.roc.noaa.gov/WSR88D/NewRadarTechnology/NewTechDefault.aspx
3. Implements
the RPG software required to add the remaining eight Air Force WSR-88D Level 2
data streams to the Level 2 Data Collection Network. Routers also need to be
installed. The NWS will release more
specific 2013 turn-on dates for these data flows by the end of this year.
If you have
questions or comments, please contact:
Tim Crum
WSR-88D Radar Operations Center
National
Technical Implementation Notices are online at:
http://www.weather.gov/os/notif.htm
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