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094
NOUS40 KWBC 061549
FOS/NOAAPORT NOTICE NO. 1822 NOVEMBER 6... 2000
ATTENTION FAMILY OF SERVICES SUBSCRIBERS/NOAAPORT USERS
SUBJECT COMPRESSED TEST RADAR PRODUCTS NOW AVAILABLE
ON NOAAPORT
THIS IS A FOLLOW UP TO FOS/NOAAPORT NOTICE NO. 1708
DATED JUNE 15... 2000.
AFTER THE JANUARY 1... 2001 TERMINATION OF THE NEXRAD
INFORMATION DISSEMINATION SERVICE /NIDS/ AGREEMENT...
THE NWS WILL BEGIN BROADCASTING RADAR PRODUCTS OVER
NOAAPORT WITHOUT DATA ENCRYPTION AND IN A COMPRESSED
FORMAT /COMPRESSION FORMAT DETAILS BELOW/. TO ALLOW
NOAAPORT USERS TO PREPARE AND TEST THEIR SYSTEMS FOR
THIS CHANGE... NWS HAS BEGUN BROADCASTING OVER NOAAPORT
THE FOLLOWING SIX WSR-88D PRODUCTS FOR LA CROSSE...
WISCONSIN /ARX/ IN THE UNENCRYPTED... COMPRESSED FORMAT
NEXRAD WMO HEADER PRODUCT
HEADER
19/R SDUS53 KARX BASE REFLECTIVITY - 124 NMI
RANGE
N0RARX /LOWEST ELEVATION ANGLE/
27/V SDUS53 KARX BASE RADIAL VELOCITY - 124 NMI
RANGE
N0VARX /LOWEST ELEVATION ANGLE/
37/CR SDUS53 KARX COMPOSITE REFLECTIVITY - 16
LEVELS...
NCRARX 124 NMI RANGE
56/SRM SDUS53 KARX STORM RELATIVE MEAN RADIAL
VELOCITY
N0SARX /LOWEST ELEVATION ANGLE/
57/VIL SDUS53 KARX VERTICAL INTEGRATED LIQUID
NVLARX
80/STP SDUS53 KARX SURFACE RAINFALL ACCUMULATION-
NTPARX STORM TOTAL
THE RADAR PRODUCT COMPRESSION ALGORITHM USED IS BASED
ON THE ZLIB COMPRESSION LIBRARIES. THESE LIBRARIES AND
DESCRIPTIONS ARE AVAILABLE AT THE FOLLOWING WEB ADDRESS
FTP/COLON///FTP.FREESOFTWARE.COM/PUB/INFOZIP/ZLIB
A DOCUMENT DESCRIBING THE RADAR PRODUCT COMPRESSION
APPROACH IS ACCESSIBLE UNDER THE WHAT S NEW HEADING
ON THE NOAAPORT HOME PAGE... ADDRESS
HTTP/COLON///WWW.NWS.NOAA.GOV/NOAAPORT/HTML/NOAAPORT.SHTML
FOR FURTHER INFORMATION CONTACT
MR. MICHAEL CARELLI... NWS NIDS ADMINISTRATOR
AT 301-713-1724 EXT. 184
OR EMAIL MICHAEL.CARELLI/AT SYMBOL/NOAA.GOV
END
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