20000407: RADAR PRODUCT COMPRESSION AND TEST INGEST PERIODS

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: 20000407: RADAR PRODUCT COMPRESSION AND TEST INGEST PERIODS
• From: Don Murray <dmurray@xxxxxxxxxxxxxxxx>
• Date: Fri, 07 Apr 2000 14:07:17 -0600

329 
NOUS40 KWBC 071958
FOS/NOAAPORT NOTICE NO. 1643     APRIL 7... 2000

ATTENTION    FAMILY OF SERVICES SUBSCRIBERS
             NOAAPORT USERS

SUBJECT      RADAR PRODUCT COMPRESSION AND TEST INGEST
             PERIODS

THIS IS A FOLLOW UP TO FOS/NOAAPORT NOTICE NO. 1612 DATED
MARCH 3... 2000.

DURING JUNE/JULY 2000 THE NWS PLANS TO BEGIN COMPRESSION
OF THE RADAR PRODUCTS BROADCAST OVER NOAAPORT.  THE
COMPRESSION ALGORITHM TO BE USED IS BASED ON THE ZLIB
COMPRESSION LIBRARIES.  THESE LIBRARIES AND
DESCRIPTIONS ARE AVAILABLE AT THE FOLLOWING WEB

ADDRESS HTTP//WWW.CDROM.COM/PUB/INFOZIP/ZLIB

A DOCUMENT DESCRIBING THE RADAR PRODUCT COMPRESSION
APPROACH IS NOW ACCESSIBLE UNDER THE WHAT S NEW HEADING
ON THE NOAAPORT HOME PAGE...

ADDRESS HTTP//WWW.NWS.NOAA.GOV/NOAAPORT/HTML/NOAAPORT.SHTML
THE SAME WHAT S NEW ENTRY PROVIDES THE WEB ACCESS TO THE
ADDRESS AT WHICH 6 SAMPLE RADAR PRODUCTS ARE AVAILABLE...
BOTH IN COMPRESSED AND DECOMPRESSED FORMATS... FOR
USERS TO DOWNLOAD VIA FTP AND TEST THEIR NOAAPORT RECEIVE
SYSTEMS PROCESSING.  ALSO  AVAILABLE AS A SEPARATE ENTRY
UNDER THE WHAT S NEW HEADING IS A DISSEMINATION OF WSR-88D
PRODUCTS CONCEPT PAPER DATED MARCH 27... 2000.

BEGINNING IN JULY 2000 THE NWS PLANS TO BEGIN REMOVING
THE ENCRYPTION OF THE RADAR PRODUCTS ON NOAAPORT FOR
LIMITED TEST PERIODS.  THE TEST PERIODS WILL BE
BETWEEN APPROXIMATELY 8AM AND 4PM EASTERN TIME ON 2
OR MORE PREANNOUNCED DATES EACH MONTH.  THIS ACTION IS BEING
TAKEN TO AFFORD ALL NOAAPORT USERS THE OPPORTUNITY TO TEST
THEIR REAL-TIME INGEST AND PROCESSING OF COMPRESSED RADAR
PRODUCTS OVER NOAAPORT.  THE TEST PERIODS IN WHICH THE
RADAR PRODUCT ENCRYPTION IS REMOVED WILL CONTINUE UNTIL
THE NIDS AGREEMENTS ARE TERMINATED /TARGETED FOR
SEPTEMBER 30... 2000/.  ONCE THE NIDS AGREEMENTS ARE
TERMINATED THE RADAR PRODUCT ENCRYPTION WILL BE REMOVED
PERMANENTLY AND ALL PRODUCTS WILL BE OPENLY AVAILABLE OVER
NOAAPORT IN THE COMPRESSED FORMAT.

FOR FURTHER INFORMATION CONTACT

MR. MICHAEL CARELLI... NWS NIDS ADMINISTRATOR
AT 301-713-1724  EXT. 184
OR EMAIL MICHAEL.CARELLI/AT SYMBOL/NOAA.GOV
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