20001208: GRIB & BUFR-ADMIN NOTICE NOUS40 KWBC (fwd)

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: 20001208: GRIB & BUFR-ADMIN NOTICE NOUS40 KWBC (fwd)
• From: Linda Miller <lmiller@xxxxxxxxxxxxxxxx>
• Date: Fri, 08 Dec 2000 07:25:38 -0700

401
NOUS40 KWBC 081358
FOS/NOAAPORT NOTICE NO. 1834          DECEMBER 8... 2000

ATTENTION  FAMILY OF SERVICES SUBSCRIBERS/NOAAPORT USERS

THE NOTIFICATION BELOW IS AN EXTRACT FROM A WMO METNO
MESSAGE

NOTIFICATION REMINDER FOR PASSAGE TO YEAR 2001

THE ATTENTION OF MEMBERS IS DRAWN TO THE FOLLOWING
REGULATIONS IN FM 92 GRIB AND FM 94 BUFR

IN FM 92 GRIB... UNDER SECTION 1 - PRODUCT DEFINITION SECTION

NOTE /6/ TO SPECIFY YEAR 2000...OCTET 13 OF THE SECTION /YEAR
OF THE CENTURY/ SHALL CONTAIN A VALUE EQUAL TO 100 AND
OCTET 25 OF THE SECTION /CENTURY OF REFERENCE TIME DATA/
SHALL CONTAIN  A VALUE  EQUAL TO 20.  TO SPECIFY YEAR 2001...
OCTET 13 OF THE SECTION SHALL CONTAIN A VALUE EQUAL TO 1
AND OCTET 25 OF THE SECTION SHALL CONTAIN A VALUE EQUAL
TO 21 /BY INTERNATIONAL CONVENTION... THE DATE OF
1 JANUARY 2000 IS THE FIRST DAY OF THE HUNDREDTH YEAR OF
THE TWENTIETH CENTURY AND THE  DATE OF 1 JANUARY 2001 IS
THE FIRST DAY OF THE FIRST YEAR OF THE TWENTY FIRST
CENTURY/   IT IS TO BE NOTED ALSO THAT YEAR 2000 IS A LEAP
YEAR AND THAT 29 FEBRUARY 2000 EXISTS.

IN FM 94 BUFR... UNDER SECTION 1 - IDENTIFICATION SECTION

NOTE /3/ TO SPECIFY YEAR 2000...OCTET 13 OF THE SECTION /YEAR
OF THE CENTURY/ SHALL CONTAIN A VALUE EQUAL TO 100. TO
SPECIFY YEAR 2001... OCTET 13 OF THE SECTION SHALL CONTAIN
A VALUE EQUAL TO 1 /BY INTERNATIONAL CONVENTION... THE
DATE OF 1 JANUARY 2000 IS THE FIRST DAY OF THE HUNDREDTH
YEAR OF THE TWENTIETH CENTURY AND THE DATE OF
1 JANUARY 2001 IS THE FIRST DAY OF THE FIRST YEAR OF THE
TWENTY FIRST CENTURY/   IT IS TO BE NOTED ALSO THAT YEAR
2000 IS A LEAP YEAR AND THAT 29 FEBRUARY 2000 EXISTS.

IN GRIB AND BUFR... THE CENTURY AND YEAR ARE CODED AS
FOLLOWED

 YEAR   GRIB CENTURY ID  BUFR AND GRIB YEAR ID
 1998   20     98
 1999   20     99
 2000   20     100
 2001   21     1
 2002   21     2

SO AT 00 UTC ON 1ST JANUARY 2001... THE GRIB CENTURY WILL
CHANGE FROM 20 TO 21... AND THE GRIB AND BUFR YEAR WILL
CHANGE FROM 100 TO 1. /

THIS INFORMATION IS ALSO POSTED ON THE NWS SYSTEMS
OPERATIONS CENTER CHANGE NOTICES WEB PAGE. THE URL IS
LISTED BELOW.

HTTP/COLON///WWW.NWS.NOAA.GOV/OSO/NOTICES/NOTICES.SHTML
/LOWER CASE/



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